as noted above , the present invention provides selectin modulators , compositions thereof and methods for modulating selectin - mediated functions . such modulators may be used in vitro or in vivo , to modulate ( e . g ., inhibit or enhance ) selectin - mediated functions in a variety of contexts , discussed in further detail below . examples of selectin - mediated functions include intercellular adhesion and the formation of new capillaries during angiogenesis . the term “ selectin modulator ,” as used herein , refers to a molecule ( s ) that modulates ( e . g ., inhibits or enhances ) a selectin - mediated function , such as selectin - mediated intercellular interactions . a selectin modulator may consist entirely of a glycomimetic compound of the present invention , or may consist of such a glycomimetic linked to a basa ( benzyl amino sulfonic acid ) or a baca ( benzyl amino carboxylic acid ), or may comprise one or more additional molecular components to any of the above . a selectin modulator of the present invention which does not possess a basa or a baca is preferably used to inhibit an e - selectin - mediated function . with the addition of a basa or baca to a glycomimetic of the present invention , the selectin modulator has increased ability to modulate p - and l - selectin - mediated functions as well . a selectin modulator of the present invention is a compound or physiologically acceptable salt thereof , having the formula : where n = 0 - 2 , and r 8 are independently selected where n = 2 ; r 2 = h , — c (═ o ) ox where x is c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl or c 1 - c 1 4 aryl , — c (═ o ) nh ( ch 2 ) n nh 2 , —[ c (═ o ) nh ( ch 2 ) n nhc (═ o )] m ( l ) m z , where n = 0 - 30 , m = 0 - 1 , l is a linker , and z is a benzyl amino sulfonic acid , a benzyl amino carboxylic acid , a polyethylene glycol , or a second compound or salt thereof having the above formula to form a dimer where r 2 of the second compound or salt thereof has m = 0 , no z , and is the point of attachment ; — o — c (═ o )— x , — nh 2 , — nh — c (═ o )— nhx , or — nh — c (═ o )— x where n = 0 - 2 and x is independently selected from c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , and any of the above ring compounds may be substituted with one to three independently selected of cl , f , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , c 1 - c 1 4 aryl , or oy where y is h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , or c 1 - c 1 4 aryl ; where r 9 is aryl , heteroaryl , cyclohexane , t - butane , adamantane , or triazole , and any of r 9 may be substituted with one to three independently selected of cl , f , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl or oy where y is h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl or c 1 - c 14 aryl ; r 5 = h , or r 4 and r 5 are taken together to form where n = 0 - 10 , and any one of the above ring compounds may be substituted with one to three independently selected of cl , f , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl or oy where y is h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl or c 1 - c 8 alkynyl ; r 6 = h , fucose , mannose , arabinose , galactose or polyols ; r 7 = h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl or where n = 0 - 3 and x is independently selected from h , oh , cl , f , n 3 , nh 2 , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , c 1 - c 14 aryl , oc 1 - c 8 alkanyl , oc 1 - c 8 alkenyl , oc 1 - c 8 alkynyl , and oc 1 - c 14 aryl , and any of the above ring compounds may be substituted with one to three independently selected of cl , f , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , c 1 - c 14 aryl or oy where y is h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl , c 1 - c 8 alkynyl , or c 1 - c 14 aryl . as used herein , a “ c 1 - c 8 alkanyl ” refers to an alkane substituent with one to eight carbon atoms and may be straight chain or branched . examples are methyl , ethyl , propyl , isopropyl , butyl and t - butyl . a “ c 1 - c 8 alkenyl ” refers to an alkene substituent with one to eight carbon atoms , at least one carbon - carbon double bond , and may be straight chain or branched . examples are similar to “ c 1 - c 8 alkanyl ” examples except possessing at least one carbon - carbon double bond . a “ c 1 - c 8 alkynyl ” refers to an alkyne substituent with one to eight carbon atoms , at least one carbon - carbon triple bond , and may be straight chain or branched . examples are similar to “ c 1 - c 8 alkanyl ” examples except possessing at least one carbon - carbon triple bond . an “ aryl ” refers to an aromatic substituent with one to fourteen carbon atoms in one or multiple rings which may be separated by a bond or fused . a “ heteroaryl ” is similar to an “ aryl ” except the aromatic substituent possesses at least one heteroatom ( such as n , o or s ) in place of a ring carbon . examples of aryls and heteroaryls include phenyl , naphthyl , pyridinyl , pyrimidinyl , triazolo , furanyl , oxazolyl , thiophenyl , quinolinyl and diphenyl . as used herein , the term “ independently selected ” refers to the selection of identical or different substituents . as used herein , polyethylene glycol (“ peg ”) refers to multiple units of ethylene glycol , as well as those with one or more substituents ( e . g ., dicarboxylated peg ). pegs with and without substituents are well known to those in the art . within the present invention , peg can serve as a substituent on a selectin modulator , or as a linker to attach other groups or compounds to a selectin modulator , or a selectin modulator may possess more than one peg . where a second selectin modulator is linked to a first selectin modulator , a dimer of selectin modulators ( i . e ., a divalent molecule ) is formed . a variety of linkers may be used to join the two selectin modulators . for example , peg may be used as the linker to prepare a dimer . as used herein , a “ dimer ” can be a homodimer or a heterodimer . a homodimer refers to a dimer where the two selectin modulators joined together are identical ( independent of the substituents for the linking to one another ). a heterodimer refers to a dimer where the two selectin modulators ( independent of the linkage substituents ) are not identical . a selectin modulator of the present invention may possess , at r 4 of the above formula , sialic acid or a sialic acid mimic as set forth above . for example , the hexose ring of sialic acid may be replaced with cyclohexane . the presence of sialic acid in the selectin modulator enhanced p - selectin binding . where only e - selectin binding ( and not both e - and p - selecting binding ) is desired , a sialic acid mimic replaces sialic acid in the selectin modulator . alternative to ( or in combination with ) the replacement of a sialic acid mimic with sialic acid , p - selectin binding may be enhanced by the addition of a basa or a baca . as disclosed above , the selectin modulator compounds of the present invention may possess a “ z ” at r 2 , and z may be a basa or a baca . the addition of a basa or baca to a selectin modulator compound of the present invention that lacks sialic acid , can convert the selectin modulator from a compound that is selective for binding to e - selectin to one that binds both e - and p - selectin . basa or baca includes a portion or an analogue of a basa or baca or portion of either , provided that the compound retains the ability to modulate a selectin - mediated function . peg may be added to a selectin modulator with or without a basa ( or baca ). peg may also be used to link a basa or baca to a selectin modulator . within the present invention , basas are low molecular weight sulfated compounds which have the ability to interact with a selectin . the interaction modulates or assists in the modulation ( e . g ., inhibition or enhancement ) of a selectin - mediated function ( e . g ., an intercellular interaction ). they exist as either their protonated acid form , or as a sodium salt , although sodium may be replaced with potassium or any other pharmaceutically acceptable counterion . a representative basa has the following structure : portions of basa that retain the ability to interact with a selectin ( which interaction modulates or assists in the modulation of a selectin - mediated function as described herein ) are also a basa component of the selectin modulators of the present invention . such portions generally comprise at least one aromatic ring present within the basa structure . within certain embodiments , a portion may comprise a single aromatic ring , multiple such rings or half of a symmetrical basa molecule . as noted above , analogues of basa and portions thereof ( both of which possess the biological characteristic set forth above ) are also encompassed , e . g ., by the basa component of the selectin modulators , within the present invention . as used herein , an “ analogue ” is a compound that differs from basa or a portion thereof because of one or more additions , deletions and / or substitutions of chemical moieties , such that the ability of the analogue to inhibit a selectin - mediated interaction is not diminished . for example , an analogue may contain s to p substitutions ( e . g ., a sulfate group replaced with a phosphate group ). other possible modifications include : ( a ) modifications to ring size ( e . g ., any ring may contain between 4 and 7 carbon atoms ); ( b ) variations in the number of fused rings ( e . g ., a single ring may be replaced with a polycyclic moiety containing up to three fused rings , a polycyclic moiety may be replaced with a single unfused ring or the number of fused rings within a polycyclic moiety may be altered ); ( c ) ring substitutions in which hydrogen atoms or other moieties covalently bonded to a carbon atom within an aromatic ring may be replaced with any of a variety of moieties , such as f , cl , br , i , oh , o - alkyl ( c1 - 8 ), sh , no 2 , cn , nh 2 , nh - alkyl ( c1 - 8 ), n -( alkyl ) 2 , so 3 m ( where m = h + , na + , k + or other pharmaceutically acceptable counterion ), co 2 m , po 4 m 2 , so 2 nh 2 , alkyl ( c1 - 8 ), aryl ( c6 - 10 ), co 2 - alkyl ( c1 - 8 ), — cf 2 x ( where x can be h , f , alkyl , aryl or acyl groups ) and carbohydrates ; and ( d ) modifications to linking moieties ( i . e ., moieties located between rings in the basa molecule ) in which groups such as alkyl , ester , amide , anhydride and carbamate groups may be substituted for one another . certain basa portions and analogues contain one of the following generic structures : within this structure , n may be 0 or 1 , x 1 may be — po 2 m , — so 2 m or — cf 2 — ( where m is a pharmaceutically acceptable counterion such as hydrogen , sodium or potassium ), r 1 may be — oh , — f or — co 2 r 4 ( where r 4 may be — h or —( ch 2 ) m — ch 3 and m is a number ranging from 0 to 3 , r 2 may be — h , — po 3 m 2 , — so 3 m 2 , — ch 2 — po 3 m 2 , — ch 2 — so 3 m 2 , — cf 3 or —( ch 2 ) m — c ( r 6 ) h — r 5 or r 9 — n ( r 10 )—, r 3 may be — h , —( ch 2 ) m — c ( r 6 ) h — r 5 or r 9 — n ( r 10 )— ( where r 5 and r 6 may be independently selected from — h , — co 2 — r 7 and — nh — r 8 , r 7 and r 8 may be independently selected from hydrogen and moieties comprising one or more of an alkyl group , an aromatic moiety , an amino group or a carboxy group , and r 9 and r 10 may be independently selected from — h , —( ch 2 ) m — ch 3 ; — ch 2 — ar , — co — ar , where m is a number ranging from 0 to 3 and ar is an aromatic moiety ( i . e ., any moiety that comprises at least one substituted or unsubstituted aromatic ring , wherein the ring is directly bonded to the — ch 2 — or — co — group indicated above )). within this structure , r 1 and r 2 may be independently selected from ( i ) hydrogen , ( ii ) moieties comprising one or more of an alkyl group , an aromatic moiety , an amino group or a carboxy group , and ( iii ) — co — r 3 ( where r 3 comprises an alkyl or aromatic moiety as described above ) and m is a pharmaceutically acceptable counterion . the individual compounds , or groups of compounds , derived from the various combinations of the structures and substituents described herein , are disclosed by the present application to the same extent as if each compound or group of compounds was set forth individually . thus , selection of particular structures and / or particular substituents is within the scope of the present invention . representative basa portions and analogues are included in the compounds shown in fig1 a - 1b . it will be apparent to those of ordinary skill in the art that modifications may be made to the compounds shown within these figures , without adversely affecting the ability to function as selectin modulators . such modifications include deletions , additions and substitutions as described above . a baca is similar to a basa , except instead of sulfonic acid groups , the compound possesses carboxylic acid groups . for example , the sulfonic acid groups of the above basa compounds may be replaced with carboxylic acid groups . thus , the above disclosure to basas is incorporated by reference into this description of bacas . where x is f or cl ; y is h , — c (═ o )( o — ch 2 ch 2 ) n or — c (═ o )( ch 2 ) n wherein n = 0 - 8 ; and z is h , c 1 - c 8 alkanyl , c 1 - c 8 alkenyl or c 1 - c 8 alkynyl . as described above , a basa or baca may be joined to a compound of the present invention at r 2 via a linker (“ l ”). typically a linker is first attached to one of a glycomimetic or a basa / baca , which is then reacted with the other . the attachment of a basa or baca to a particular glycomimetic can be accomplished in a variety of ways to form a selectin modulator . a linker possessed by ( or added to ) a basa or baca or a glycomimetic may include a spacer group , such as —( ch 2 ) n — or — o ( ch 2 ) n — where n is generally about 1 - 20 ( including any whole integer range therein ). an example of a linker is — nh 2 on a glycomimetic , e . g ., — ch 2 — nh 2 when it includes a short spacer group . in an embodiment , — ch 2 — nh 2 is attached to a glycomimetic at r ′ which may then be used to attach a basa or baca . the simplest attachment method is reductive amination of the basa or baca to a glycomimetic containing a reducing end ( an anomeric hydroxyl / aldehyde ). this is accomplished by simple reaction of the basa or baca to the reducing end and subsequent reduction ( e . g ., with nacnbh 3 at ph 4 . 0 ) of the imine formed . the most general approach entails the simple attachment of an activated linker to the glycomimetic via an o , s or n heteroatom ( or c atom ) at the anomeric position . the methodology of such attachments has been extensively researched for carbohydrates and anomeric selectivity is easily accomplished by proper selection of methodology and / or protecting groups . examples of potential glycosidic synthetic methods include lewis acid catalyzed bond formation with halogen or peracetylated sugars ( koenigs knorr ), trichloroacetamidate bond formation , thioglycoside activation and coupling , glucal activation and coupling , n - pentenyl coupling , phosphonate ester homologation ( horner - wadsworth - emmons reaction ), and many others . alternatively , linkers could be attached to positions on the moieties other than the anomeric . the most accessible site for attachment is at a six hydroxyl ( 6 - oh ) position of a glycomimetic ( a primary alcohol ). the attachment of a linker at the 6 - oh can be easily achieved by a variety of means . examples include reaction of the oxy - anion ( alcohol anion formed by deprotonation with base ) with an appropriate electrophile such as an alkyl / acyl bromide , chloride or sulfonate ester , activation of the alcohol via reaction with a sulfonate ester chloride or pocl 3 and displacement with a subsequent nucleophile , oxidation of the alcohol to the aldehyde or carboxylic acid for coupling , or even use of the mitsunobu reaction to introduce differing functionalities . once attached the linker is then functionalized for reaction with a suitable nucleophile on the basa or baca ( or vice versa ). this is often accomplished by use of thiophosgene and amines to make thiourea - linked heterobifunctional ligands , diethyl squarate attachment ( again with amines ) and / or simple alkyl / acylation reactions . additional methods that could be utilized include fmoc solid or solution phase synthetic techniques traditionally used for carbohydrate and peptide coupling and chemo - enzymatic synthesis techniques possibly utilizing glycosyl / fucosyl transferases and / or oligosaccharyltransferase ( ost ). other linkers ( e . g ., peg ) will be familiar to those in the art or in possession of the present disclosure . a compound , or physiologically acceptable salt thereof , of the present invention has the formula : wherein r 1 - r 9 are defined as set forth above . where r 9 is defined as above . in a preferred embodiment , r 9 is cyclohexane . in a preferred embodiment , r 6 is galactose . in a preferred embodiment , r 8 is in a preferred embodiment , r 2 is —[ c (═ o ) nh ( ch 2 ) n nhc (═ o )] m ( l ) m z , where n , m , l and z are defined as above . in a preferred embodiment , z is a benzyl amino sulfonic acid , a benzyl amino carboxylic acid or a polyethylene glycol . in a preferred embodiment , r 3 is — o — c (═ o )— x , where x is defined as above . in a preferred embodiment , x is in a preferred embodiment , r 5 is h . in a preferred embodiment , l is a polyethylene glycol or a thiadiazole . although selectin modulators as described herein may sufficiently target a desired site in vivo , it may be beneficial for certain applications to include an additional targeting moiety to facilitate targeting to one or more specific tissues . as used herein , a “ targeting moiety ,” may be any substance ( such as a compound or cell ) that , when linked to a modulating agent enhances the transport of the modulator to a target tissue , thereby increasing the local concentration of the modulator . targeting moieties include antibodies or fragments thereof , receptors , ligands and other molecules that bind to cells of , or in the vicinity of , the target tissue . linkage is generally covalent and may be achieved by , for example , direct condensation or other reactions , or by way of bi - or multi - functional linkers . for certain embodiments , it may be beneficial to also , or alternatively , link a drug to a selectin modulator . as used herein , the term “ drug ” refers to any bioactive agent intended for administration to a mammal to prevent or treat a disease or other undesirable condition . drugs include hormones , growth factors , proteins , peptides and other compounds . examples of potential drugs include antineoplastic agents ( such as 5 - fluorouracil and distamycin ), integrin agonist / antagonists ( such as cyclic - rgd peptide ), cytokine agonist / antagonists , histamine agonist / antagonists ( such as diphenhydramine and chlorpheniramine ), antibiotics ( such as aminoglycosides and cephalosporins ) and redox active biological agents ( such as glutathione and thioredoxin ). in other embodiments , diagnostic or therapeutic radionuclides may be linked to a selectin modulator . in many embodiments , the agent may be linked directly or indirectly to a selectin modulator . modulators as described herein may be present within a pharmaceutical composition . a pharmaceutical composition comprises one or more modulators in combination with one or more pharmaceutically or physiologically acceptable carriers , diluents or excipients . such compositions may comprise buffers ( e . g ., neutral buffered saline or phosphate buffered saline ), carbohydrates ( e . g ., glucose , mannose , sucrose or dextrans ), mannitol , proteins , polypeptides or amino acids such as glycine , antioxidants , chelating agents such as edta or glutathione , adjuvants ( e . g ., aluminum hydroxide ) and / or preservatives . within yet other embodiments , compositions of the present invention may be formulated as a lyophilizate . compositions of the present invention may be formulated for any appropriate manner of administration , including for example , topical , oral , nasal , intravenous , intracranial , intraperitoneal , subcutaneous , or intramuscular administration . a pharmaceutical composition may also , or alternatively , contain one or more active agents , such as drugs ( e . g ., those set forth above ), which may be linked to a modulator or may be free within the composition . the compositions described herein may be administered as part of a sustained release formulation ( i . e ., a formulation such as a capsule or sponge that effects a slow release of modulating agent following administration ). such formulations may generally be prepared using well known technology and administered by , for example , oral , rectal or subcutaneous implantation , or by implantation at the desired target site . carriers for use within such formulations are biocompatible , and may also be biodegradable ; preferably the formulation provides a relatively constant level of modulating agent release . the amount of modulating agent contained within a sustained release formulation depends upon the site of implantation , the rate and expected duration of release and the nature of the condition to be treated or prevented . selectin modulators are generally present within a pharmaceutical composition in a therapeutically effective amount . a therapeutically effective amount is an amount that results in a discernible patient benefit , such as increased healing of a condition associated with excess selectin - mediated function ( e . g ., intercellular adhesion ), as described below . in general , the modulating agents and compositions described herein may be used for enhancing or inhibiting a selectin - mediated function . such enhancement or inhibition may be achieved in vitro and / or in vivo in a warm - blooded animal , preferably in a mammal such as a human , provided that a selectin - expressing cell is ultimately contacted with a modulator , in an amount and for a time sufficient to enhance or inhibit selectin - mediated function . within certain aspects , the present invention provides methods for inhibiting the development of a condition associated with a selectin - mediated function , such as intercellular adhesion . in general , such methods may be used to prevent , delay or treat such a condition . in other words , therapeutic methods provided herein may be used to treat a disease , or may be used to prevent or delay the onset of such a disease in a patient who is free of disease or who is afflicted with a disease that is not associated with a selectin - mediated function . for example , the therapeutic methods have uses that may include the arrest of cell growth , the killing of cells , the prevention of cells or cell growth , the delay of the onset of cells or cell growth , or the prolongation of survival of an organism . a variety of conditions are associated with a selectin - mediated function . such conditions include , for example , tissue transplant rejection , platelet - mediated diseases ( e . g ., atherosclerosis and clotting ), hyperactive coronary circulation , acute leukocyte - mediated lung injury ( e . g ., adult respiratory distress syndrome ( ards )), crohn &# 39 ; s disease , inflammatory diseases ( e . g ., inflammatory bowel disease ), autoimmune diseases ( ms , myasthenia gravis ), infection , cancer ( and metastasis ), thrombosis , wounds ( and wound - associated sepsis ), burns , spinal cord damage , digestive tract mucous membrane disorders ( gastritis , ulcers ), osteoporosis , rheumatoid arthritis , osteoarthritis , asthma , allergy , psoriasis , septic shock , traumatic shock , stroke , nephritis , atopic dermatitis , frostbite injury , adult dyspnoea syndrome , ulcerative colitis , systemic lupus erythematosus , diabetes and reperfusion injury following ischaemic episodes . selectin modulators may also be administered to a patient prior to heart surgery to enhance recovery . other uses include pain management , prevention of restinosis associated with vascular stenting , and for undesirable angiogenesis , e . g ., associated with cancer . selectin modulators of the present invention may be administered in a manner appropriate to the disease to be treated ( or prevented ). appropriate dosages and a suitable duration and frequency of administration may be determined by such factors as the condition of the patient , the type and severity of the patient &# 39 ; s disease and the method of administration . in general , an appropriate dosage and treatment regimen provides the modulating agent ( s ) in an amount sufficient to provide therapeutic and / or prophylactic benefit . within particularly preferred embodiments of the invention , a selectin modulator may be administered at a dosage ranging from 0 . 001 to 1000 mg / kg body weight ( more typically 0 . 01 to 1000 mg / kg ), on a regimen of single or multiple daily doses . appropriate dosages may generally be determined using experimental models and / or clinical trials . in general , the use of the minimum dosage that is sufficient to provide effective therapy is preferred . patients may generally be monitored for therapeutic effectiveness using assays suitable for the condition being treated or prevented , which will be familiar to those of ordinary skill in the art . selectin modulators may also be used to target substances to cells that express a selectin . such substances include therapeutic agents and diagnostic agents . therapeutic agents may be a molecule , virus , viral component , cell , cell component or any other substance that can be demonstrated to modify the properties of a target cell so as to provide a benefit for treating or preventing a disorder or regulating the physiology of a patient . a therapeutic agent may also be a prodrug that generates an agent having a biological activity in vivo . molecules that may be therapeutic agents may be , for example , polypeptides , amino acids , nucleic acids , polynucleotides , steroids , polysaccharides or inorganic compounds . such molecules may function in any of a variety of ways , including as enzymes , enzyme inhibitors , hormones , receptors , antisense oligonucleotides , catalytic polynucleotides , anti - viral agents , anti - tumor agents , anti - bacterial agents , immunomodulating agents and cytotoxic agents ( e . g ., radionuclides such as iodine , bromine , lead , palladium or copper ). diagnostic agents include imaging agents such as metals and radioactive agents ( e . g ., gallium , technetium , indium , strontium , iodine , barium , bromine and phosphorus - containing compounds ), contrast agents , dyes ( e . g ., fluorescent dyes and chromophores ) and enzymes that catalyze a colorimetric or fluorometric reaction . in general , therapeutic and diagnostic agents may be attached to a selectin modulator using a variety of techniques such as those described above . for targeting purposes , a selectin modulator may be administered to a patient as described herein . since selectins are expressed on endothelial cells involved in the formation of new capillaries during angiogenesis , a selectin modulator may be used to target a therapeutic agent for killing a tumor &# 39 ; s vasculature . a selectin modulator may also be used for gene targeting . selectin modulators may also be used in vitro , e . g ., within a variety of well known cell culture and cell separation methods . for example , modulators may be linked to the interior surface of a tissue culture plate or other cell culture support , for use in immobilizing selectin - expressing cells for screens , assays and growth in culture . such linkage may be performed by any suitable technique , such as the methods described above , as well as other standard techniques . modulators may also be used , for example , to facilitate cell identification and sorting in vitro , permitting the selection of cells expressing a selectin ( or different selectin levels ). preferably , the modulator ( s ) for use in such methods are linked to a detectable marker . suitable markers are well known in the art and include radionuclides , luminescent groups , fluorescent groups , enzymes , dyes , constant immunoglobulin domains and biotin . within one preferred embodiment , a modulator linked to a fluorescent marker , such as fluorescein , is contacted with the cells , which are then analyzed by fluorescence activated cell sorting ( facs ). modulating agents as described above are capable , for example , of inhibiting selectin - mediated cell adhesion . this ability may generally be evaluated using any of a variety of in vitro assays designed to measure the effect on adhesion between selectin - expressing cells ( e . g ., adhesion between leukocytes or tumor cells and platelets or endothelial cells ). for example , such cells may be plated under standard conditions that , in the absence of modulator , permit cell adhesion . in general , a modulator is an inhibitor of selectin - mediated cell adhesion if contact of the test cells with the modulator results in a discernible inhibition of cell adhesion . for example , in the presence of modulators ( e . g ., micromolar levels ), disruption of adhesion between leukocytes or tumor cells and platelets or endothelial cells may be determined visually within approximately several minutes , by observing the reduction of cells interacting with one another . all compounds of the present invention or useful thereto , include physiologically acceptable salts thereof . the following examples are offered by way of illustration and not by way of limitation . synthesis of compound 4 : nitration of commercially available 2 ( 1 g ) is according to the procedure described ( for literature conditions see u . s . pat . no . 4 , 534 , 905 ; allison , f . et al . helv . chim . acta 4 : 2139 ( 1952 )). the crude product 3 is dissolved in water ( 40 ml ) and 10 % pd / c ( 0 . 3 g ) added . the mixture is hydrogenated (˜ 45 psi ) at room temperature for 48 h . the catalyst is filtered through celite and the filter bed is washed with water . the filtrate is concentrated under vacuum to afford a pink solid . after removal of the catalyst , the filtrate is concentrated to 15 ml and an equal volume of ethanol is added . the precipitate is collected by filtration to give compound 4 with very little impurity . synthesis of compound 7a : a solution of 5 ( 5 g ) and 8 ( 4 . 45 g , 24 . 7 mmol ), and k 2 co 3 ( 2 m in h 2 o , 24 . 7 ml , 49 . 4 mmol ) in 10 : 1 toluene / ethanol ( 70 ml ) is treated with pd ( pph 3 ) 4 ( 1 . 43 g , 1 . 24 mmol ) and the mixture is refluxed for 20 h . after work up , recrystallization of the crude product in etoh and chromatographic purification of the recrystallization filtrate affords compound 9 ( 2 . 9 g , 46 %, & gt ; 90 % hplc ) and 2 . 2 g of recovered 5 . the product is characterized by 1 h nmr . a mixture of 9 ( 2 . 9 g , 11 . 3 mmol ) and lioh . h 2 o ( 1 . 43 g , 34 . 1 mmol ) in 1 : 1 thf / h 2 o ( 250 ml ) is stirred at rt for 21 h . the reaction affords 7 ( 2 . 58 g , 94 %, & gt ; 90 % hplc ) after work up . the product is characterized by 1 h nmr . dmf ( 20 μl ) is added to a suspension of 7 ( 500 mg , 1 . 94 mmol ), socl 2 ( 0 . 23 ml , 3 . 10 mmol ) and toluene ( 3 ml ) and then heated to 80 ° c . after 20 h the reaction is worked up to afford the acid chloride ( 640 mg ). the product 7a is characterized by ir and 1 h nmr . synthesis of compound 10 : to a solution of amine 4 ( 268 mg , 0 . 641 mmol ) in h 2 o ( 2 ml ) and dioxane ( 18 ml ) is added a solution of 7a ( 273 mg , 0 . 99 mmol ) in dioxane ( 16 ml ) dropwise over 30 min . the ph of the reaction mixture is adjusted to 8 . 5 with 0 . 25 m naoh as the addition progresses . the reaction is stirred at room temperature for 2 . 5 h after the addition . purification by column chromatography ( methanol / toluene 1 : 1 ) followed by prep . tlc ( methanol / toluene 1 : 1 ) affords 50 mg of compound 10 , which is characterized by 1 h nmr and ms . hydrogenation of compound 10 : a suspension of 10 ( 30 mg , 0 . 049 mmol ) and 10 % pd on carbon ( 50 mg ) in h 2 o ( 20 ml ) is hydrogenated ( 55 psi ) at room temperature for 4 h to yield the basa of fig1 a . synthesis of compound 4 : 3 - nitro - benzyl iodide ( 1 ) ( 48 . 3 g ) is added to an aqueous solution ( ph 11 ) of commercially available , 8 - aminonaphthalene - 1 , 3 , 5 - trisulfonic acid ( 2 ) ( 29 . 5 g ) with stirring at room temperature . ph of the solution is adjusted to 1 and after evaporation of the solvent , the product 3 ( 6 . 4 g ) is precipitated out from ethanol . platinum catalyzed hydrogenation of compound 3 affords compound 4 ( the basa of fig1 b ) in 96 % yield . a suspension of 1 ( 8 . 9 g ), paraformaldehyde ( 8 . 9 g ), and h 2 so 4 ( 125 ml ) is heated to 90 ° c . for 14 h and affords crude 2 ( 7 . 8 g ) after work up . the crude product is 77 % pure by hplc and characterized by 1 h nmr . to a solution of 2 ( 1 . 0 g ) in acetone ( 30 ml ) is added k 2 co 3 ( 3 . 1 g ) and dimethylsulfate ( 1 . 4 ml ) and the reaction is heated to reflux for 24 h . the reaction is combined with the next batch for work up and purification . to a solution of 2 ( 7 . 5 g ) in acetone ( 225 ml ) is added k 2 co 3 ( 23 . 2 g ) and dimethylsulfate ( 10 . 8 ml ) and the reaction is heated to reflux for 16 h . the reaction , combined with the previous batch , affords 3 ( 7 . 3 g , 74 %) after work up and column chromatographic purification ( ethyl acetate / heptane 1 : 9 ). the product is 80 % pure by hplc and characterized by 1 h nmr . chromic anhydride ( 6 . 94 g ) is added to a suspension of 3 ( 7 . 16 g ) in acetic anhydride ( 175 ml ) at 3 ° c . and then stirred at room temperature for 15 h . the reaction affords 4 ( 5 . 89 g ) after work up and column purification ( 100 % dichloromethane ). the product is 90 % pure by hplc and characterized by 1 h nmr . to a suspension of 4 ( 5 . 89 g ) in thf / h 2 o ( 300 ml , 1 : 1 ) is added lioh h 2 o ( 1 . 74 g ) at room temperature and the resulting mixture is stirred for 14 h . after an acid / base work up , the product is obtained as a white solid . the product is dried under high vacuum and characterized by nmr and mass spectroscopy . synthesis of intermediate ii : (−)- shikimic acid ( 20 g ) in meoh ( 200 ml ) and sulfuric acid ( 2 ml , 98 %) are stirred at rt for 50 h . the reaction mixture is neutralized with 2n aqueous naoh in the cold . after evaporation to dryness , the residue is purified by silica gel chromatography to afford ii ( 19 . 2 g ). synthesis of intermediate ( iii ): methyl shikimate ( ii , 10 g ), 2 , 2 dimethoxypropane ( 10 ml ) and p - tsoh ( 0 . 8 g ) are dissolved in acetonitrile ( 125 ml ) and stirred at rt for 1 h . the reaction mixture is then neutralized with triethylamine ( 2 ml ) and evaporated to dryness . the residue is chromatographed on silica gel to yield iii ( 11 g ). synthesis of intermediate iv : the shikimic acid derivative iii ( 10 g ) and pto 2 / c ( 10 %, 250 mg ) in meoh ( 40 ml ) are hydrogenated at rt under vigorous stirring . after 16 h the reaction mixture is filtered over celite and evaporated to dryness . the residue is chromatographed on silica gel to yield iv . synthesis of intermediate v : to a solution of iv ( 8 g ) in dcm ( 100 ml ) at 0 ° c . are added pyridine ( 12 ml ), acetic anhydride ( 7 ml ) and a dmap ( 25 mg ). the reaction mixture is stirred at rt for 1 h , and diluted with etoac ( 250 ml ). after washing with 0 . 5 m aqueous hcl ( 3 × 50 ml ), saturated solution of khco 3 ( 3 × 50 ml ) and brine ( 3 × 50 ml ), the combined organic layers are dried ( na 2 so 4 ) and evaporated to dryness . the residue is purified by chromatography on silica gel to yield v ( 6 . 8 g ). synthesis of intermediate vi : a solution of v ( 6 . 0 g ) in acetic acid ( 30 ml , 80 %) is stirred at 80 ° c . for 1 h . solvent is evaporated off and the residue is purified by chromatography on silica gel ( dcm / meoh 14 : 1 ) to yield vi ( 3 . 6 g ). synthesis of intermediate ( vii ): a solution of vi ( 3 g ) and p - tsci ( 3 . 5 g ) in pyridine ( 30 ml ) is stirred at rt for 6 h . meoh ( 5 ml ) is added and the solvent is evaporated at reduced pressure , the residue dissolved in etoac ( 3 × 150 ml ) and the organic layers are washed with 0 . 5 m aqueous hcl ( 0 ° c . ), water ( cold ) and brine ( cold ). the combined organic layers are dried ( na 2 so 4 ), filtered on celite and evaporated to dryness . the residue is purified by chromatography on silica gel ( toluene / etoac 4 : 1 ) to yield vii ( 3 . 7 g ). synthesis of compound viii : a solution of vii ( 3 g ) and nan 3 ( 2 . 5 g ) in dmf ( 20 ml ) is stirred at 80 ° c . the reaction mixture is cooled to rt and diluted with etoac ( 200 ml ) and water ( 50 ml ). the organic layer is additionally washed twice with water ( 2 × 50 ml ) and once with brine ( 50 ml ). all aqueous layers are extracted twice with etoac ( 2 × 50 ml ). the combined organic layers are dried with na 2 so 4 , filtered and the solvent is evaporated off . the residue is purified by chromatography on silica gel ( petroleum ether / etoac 5 : 2 ) to give viii ( 2 . 2 g ). synthesis of compound x : to a solution of ethyl 2 , 3 , 4 - tri - o - benzyl - α - l - fucothiopyanoside ix ( 1 . 5 g ) in dcm ( 3 ml ), bromine ( 150 μl ) is added at 0 ° c . under argon . after 5 min the cooling bath is removed and the reaction mixture is stirred for additional 25 min at rt . cyclohexene ( 200 μl ) is added and the reaction mixture is added to a solution of viii ( 400 mg ), ( et ) 4 nbr ( 750 mg ) and powdered 4 å molecular sieves in dcm ( 10 ml ) and dmf ( 5 ml ). after 16 h , triethylamine ( 1 . 5 ml ) is added and stirred for an additional for 10 min , diluted with etoac ( 50 ml ) and washed with sat . aqueous nahco 3 , water and brine . the aqueous layers are extracted twice with etoac ( 2 × 50 ml ). the combined organic layers are dried ( na 2 so 4 ), filtered and evaporated to dryness . the residue is purified by chromatography on silica gel ( toluene / etoac 9 : 1 ) to yield x ( 700 mg ). synthesis of compound xi : to a solution of x ( 1 . 5 g ) in meoh ( 20 ml ) is added freshly prepared naome ( 80 mg ) and the reaction mixture is stirred in a pressure tube at 80 ° c . for 20 h . the reaction mixture is cooled to rt and neutralized with acetic acid . solvent is evaporated to dryness and the residue is dissolved in ether . freshly prepared diazomethane is added and the excess diazomethane is neutralized with acetic acid . solvent is evaporated off to give xi ( 1 . 25 g ). synthesis of building block xv : this synthesis is done exactly in same way as described previously ( helvetica chemica acta 83 : 2893 - 2907 ( 2000 )). synthesis of compound xvi : a mixture of xi ( 1 . 6 g ), xv ( 3 g ) and activated powdered molecular sieves 4 å ( 1 g ) in dcm ( 17 ml ) is stirred at rt under argon for 2 h . then dmtst ( 2 g ) is added in 4 equal portions over a period of 1 . 5 h . after 24 h the reaction mixture is filtered over celite and the filtrate is diluted with dcm ( 100 ml ). the organic layer is washed with sat . aqueous nahco 3 and brine and the aqueous layers are extracted twice with dcm . the combined organic layers are dried ( na 2 so 4 ), filtered and evaporated to dryness . the residue is purified by chromatography on silica gel ( toluene / etoac 8 : 1 ) to yield xvi ( 1 . 5 g ). synthesis of compound xvii : to a solution of xvi ( 500 mg ) and orotic acid chloride ( 500 mg ) in dichloromethane ( 10 ml ) is added a solution of triphenylphosphine ( 500 mg in 5 ml dichloromethane ) dropwise during 10 min . the reaction mixture is stirred at rt for 25 h and the solvent is evaporated off . the residue is purified ( chromatography on silica gel dcm / meoh 19 : 1 ) to give xvii ( 250 mg ). synthesis of compound xviii : to a solution of xvii ( 200 mg ) in dioxane - water ( 5 : 1 , 12 ml ) is added 10 % pd — c ( 100 mg ) and the reaction mixture is stirred vigorously under hydrogen ( 55 psi ) for 24 h . catalyst is filtered through a bed of celite and the solvent is evaporated off . residue is purified by silica gel chromatography to give compound xviii ( 150 mg ). synthesis of xix : to a solution of compound xviii ( 145 mg ) in meoh ( 5 ml ) is added a solution of naome in meoh ( 25 %, 0 . 025 ml ) and the reaction mixture is stirred at rt for 4 h , neutralized with acetic acid and the solvent is evaporated off . residue is dissolved in water and passed through a bed of dowex 50wx - 8 ( na - form ) resin . water wash is evaporated off to afford compound xix ( 100 mg ). synthesis of eda - xix : xix ( 80 mg ) is heated at 70 ° c . with ethylenediamine ( eda ) ( 1 ml ) with stirring for 5 h . solvent is evaporated off and the purified by sephadex g - 25 column to give eda - xix ( 82 mg ). synthesis of compound xxi : to a solution of compound xx ( 1 . 5 g , synthesized according to previously published procedure carbohydrate chemistry and biochemistry , 2000 , vol . 1 , page 345 - 365 ) in pyridine ( 60 ml ) is added benzoic anhydride ( 0 . 73 g ) and dimethyl amino pyridine ( 0 . 02 g ). the reaction mixture is stirred at room temperature for 20 h . solvent is evaporated off and the residue is dissolved in dichloromethane . the solution is washed successively with cold 1n hcl and water . the solution is dried ( sodium sulfate ) and concentrated to dryness . residue is purified by column chromatography ( silica gel ) to give compound xxi ( 1 g ). synthesis of compound xxii : to a solution of compound xxi in dichloromethane ( 20 ml ) is added trifluoroacetic acid ( 20 ml ) at 0 ° c . and the reaction mixture is stirred at the same temperature for 1 h . solvent is evaporated off and the residue is purified by column chromatography ( silica gel ) to give compound xxii ( 0 . 6 g ). synthesis of compound xxiii : to a solution of compound xxii ( 1 g ) in dichloromethane ( 40 ml ) is added dbu ( 0 . 05 ml ) and tricholroacetonitrile ( 0 . 4 g ) at 0 ° c . the solution is stirred at the same temperature for 1 . 5 h . solvent is evaporated off and purified by column chromatography ( silica gel ) to give compound xxiii ( 0 . 6 g ). synthesis of compound xxiv : to a mixture of compound xi ( 0 . 7 g ), compound xxiii ( 0 . 5 g ) in dichloromethane ( 40 ml ) and molecular sieves ( 4 å , 5 g ) is added a solution of tmsotf ( 0 . 15 ml in dichloromethane ( 5 ml )) dropwise at 0 ° c . with stirring . stirring is continued at the same temperature for 2 h . triethylamine ( 0 . 2 ml ) is added and the reaction mixture is filtered through a bed of celite . reaction mixture is washed with cold saturated solution of sodium bicarbonate and water . dried ( sodium sulfate ) and concentrated to dryness . the residue is purified by column chromatography ( silica gel ) to give compound xxiv ( 0 . 7 g ). synthesis of compound xxv : to a solution of compound xxiv ( 0 . 6 g ) in dmf ( 30 ml ) is added dbu ( 30 drops ) and dl - dithio - threitol ( dtt , 0 . 28 g ). the reaction mixture is stirred at room temperature for 1 h . solvent is evaporated off , residue is dissolved in dichloromethane and washed with water . organic layer is dried ( sodium sulfate ) and concentrated to dryness . the residue is purified by column chromatography ( silica gel ) to give compound xxv ( 0 . 45 g ). synthesis of compound xxvi : to a solution of compound xxv ( 0 . 4 g ) in dmf ( 10 ml ) is added orotic acid ( 0 . 14 g ), eedq ( 0 . 19 g ), 4 - methyl - morpholine ( 0 . 09 g ) and the reaction mixture is stirred at 70 ° c . for 20 h . solvent is evaporated off and residue is dissolved in dichloromethane . the solution is washed with cold saturated sodium bicarbonate solution and water . organic layer is dried ( sodium sulfate ) and concentrated to dryness . the residue is purified by column chromatography ( silica gel ) to give compound xxvi ( 0 . 2 g ). synthesis of compound xxvii : compound xxvii ( 0 . 2 g ) is hydrogenated exactly in the same condition as described and the intermediate is partially debenzoylated using naome in meoh as described to give compound xxvii ( 0 . 050 g ) after chromatographic purification . synthesis of compound xxviii : compound xxvii is treated with ethylenediamine as described and purified by column chromatography ( silica gel and gel filtration sephadex g - 25 ) to give compound xxviii ( 25 mg ). to a solution of 3 , 6 - dioxaoctanedioic acid ( peg , 200 mg , available commercially ) in dmf ( 1 ml ) is added hunig base ( 0 . 4 ml ), and then hatu ( 0 . 35 g ) is added after 5 min . the solution is stirred at rt for 10 min . and then a solution of the basa of example 2 ( 50 mg ) in dmf ( 0 . 1 ml ) is added . the reaction mixture is stirred for 4 h at rt and the solvent is evaporated off . the residue is purified by hpic ( reverse - phase c18 column ) to give xxxiii ( 40 mg ). this synthesis is performed in the same way as described in example 6 , except using the basa of example 1 to give xxxii ( 50 mg ). synthesis of intermediate xxxiv ( method 1 ): the baca of example 3 ( 0 . 5 g ) is suspended in methanol - water ( 1 ml , 9 : 1 ) and the ph is adjusted to 8 . 2 by the addition of an aqueous solution of cs 2 co 3 . the solvent is removed and then coevaporated with toluene . the residue is dissolved in dmf ( 1 ml ). benzylbromide ( 0 . 5 ml ) is added and stirred for 20 h at room temperature . dichloromethane ( 15 ml ) is added washed with cold water . organic layer is dried ( anhydrous sodium sulfate ) and solvent is evaporated off . the residue is purified by column chromatography ( silica ) to give xxxiv ( 0 . 48 g ). synthesis of intermediate xxxiv ( method 2 ): to a solution of the baca of example 3 ( 1 g ) in dmf is added n , n - diisopropyl ethylamine ( 1 . 5 g ) and benzylbromide ( 1 . 5 g ). the reaction mixture is stirred at 50 ° c . for 20 h . solvent is evaporated off and the residue is purified by column chromatography ( silica ) to give xxxiv . synthesis of intermediate of xxxv : to a solution of xxxiv ( 0 . 2 g ) in meoh ( 10 ml ) is added sodiumborohydride ( 0 . 070 g ) at 0 ° c . and the reaction mixture is stirred at 0 ° c . for 1 h . the reaction is quenched by addition of acetic acid and concentrated to dryness . residue is purified column chromatography ( silica ) to afford xxxv ( 0 . 16 g ). synthesis of intermediate of xxxvb : to a solution of xxxv ( 0 . 36 g ) in dichloromethane is added triethylamine ( 0 . 6 ml ) and meso 2 cl ( 0 . 29 ml ). the reaction mixture is stirred at rt for 21 h . reaction mixture is diluted with dichloromethane , washed with water , 1 m hcl , and brine . organic layer is dried ( na 2 so 4 ) and concentrated to dryness to give crude xxxva . to a solution of crude xxxva in dmf ( 5 ml ) is added nan 3 ( 0 . 18 g ). the reaction mixture is stirred at 100 ° c . for 4 h and the solvent is evaporated off . the residue is dissolved in ch 2 cl 2 and washed with cold brine , cold 1 m hcl , cold nahco 3 solution , and cold water . organic layer is dried ( na 2 so 4 ) and concentrated to dryness . the residue is purified by column chromatography ( silica ) to give xxxvb ( 0 . 14 g ). synthesis of intermediate xxxvc : to a solution of xxxvc ( 0 . 08 g ) in dmf ( 3 ml ) is added dtt ( 0 . 04 g ) and dbu ( 0 . 02 ml ) and stirred at rt for 1 h . solvent is evaporated off and the residue is dissolved in etoac , washed with h 2 o and the organic layer is concentrated to dryness . the residue is purified by column chromatography ( silica ) to afford intermediate xxxvc ( 0 . 061 g ). synthesis of intermediate xxxvd : to a solution of monoprotected peg - dicarboxylic acid ( 0 . 6 g ) in dmf ( 3 ml ) is added diisopropylethylamine ( 0 . 24 ml ) and hatu ( 0 . 513 g ) with stirring . a solution of intermediate xxxvc ( 0 . 185 g ) in dmf ( 3 ml ) is added into the above solution . the reaction mixture is stirred at rt for 1 h . solvent is evaporated off and the residue is dissolved in etoac . etoac layer is washed with water and purified by column chromatography to give intermediate xxxvd . synthesis of xxxvi : to a solution of xxxvd ( 0 . 185 g ) in glacial acoh ( 3 ml ) is added zn dust ( 0 . 1 g ) and the reaction is stirred at 40 ° c . for 30 min . reaction mixture is filtered through a celite bed and zn cake is washed with meoh . the filtrate is concentrated to dryness and purified by sep - pak c18 column to afford xxxvi ( 0 . 050 g ). synthesis of intermediate xxxiva : a suspension of ticl 4 - tetrahydrofuran complex ( 0 . 705 g ) and zn - dust ( 0 . 28 g ) in thf ( 25 ml ) is refluxed for 2 h at 75 ° c . for 2 h with stirring under inert atmosphere . to this mixture is added a solution of the baca of example 3 ( 0 . 3 g ) and n - fluorenylmethoxycarbonyl - 3 - aminopropanol ( 0 . 312 g , prepared as described in the literature casimiro - garcia et al , bioorg . med . chem ., 1979 ( 2001 ) 2827 ). the reaction mixture is stirred at 75 ° c . for 2 . 5 h ( mcmurray coupling ) under inert atmosphere . the reaction is cooled down to rt and h 2 o ( 30 ml ) is added , filtered through a celite bed and the filtrate is washed three times with etoac ( 30 ml each ). organic layer is collected together and dried ( na 2 so 4 ), filtered and concentrated to dryness . residue is purified by column chromatography to yield xxxiva . synthesis of intermediate xxxivb : to a solution of xxxiva ( 0 . 444 g ) in anhydrous thf ( 21 ml ) is added piperidine ( 6 . 25 ml ) and the reaction mixture is stirred at rt for 3 h . the solvent is evaporated off and the residue is purified by column chromatography ( silica ) to give intermediate xxxivb ( 0 . 26 g ). solid phase synthesis of intermediate xxxivc : a mixture of ps - carbodiimide resin ( 0 . 200 g ), hobt ( 0 . 030 g ), and mono protected peg - cooh ( 0 . 080 g ) in ch 2 cl 2 ( 3 ml ) is stirred for 5 min at rt in a syringe reactor . to the above mixture is added a solution of intermediate xxxivb ( 0 . 080 g ) in ch 2 cl 2 ( 3 ml ) and the reaction mixture is stirred at rt for 3 h . mp - carbonate resin ( 0 . 216 g ) is added and stirred for 2 h at rt . resin is filtered off and then the resin is washed 5 times with ch 2 cl 2 . filtrate is combined and concentrated to dryness to afford intermediate xxxivc . synthesis of intermediate xxxvia : xxxivc ( 0 . 12 g ) is treated with zn / acoh exactly in the same as described for the synthesis of intermediate xxxvi to yield intermediate xxxvia ( 0 . 104 g ). synthesis of intermediate xxxiva : a suspension of ticl 4 - tetrahydrofuran complex ( 0 . 705 g ) and zn - dust ( 0 . 28 g ) in thf ( 25 ml ) is refluxed for 2 h at 75 ° c . for 2 h with stirring under inert atmosphere . to this mixture is added a solution of the baca of example 3 ( 0 . 3 g ) and n - fluorenylmethoxycarbonyl - 3 - aminopropanol ( 0 . 312 g , prepared as described in the literature casimiro - garcia et al , bioorg . med . chem ., 1979 ( 2001 ) 2827 ). the reaction mixture is stirred at 75 ° c . for 2 . 5 h ( mcmurray coupling ) under inert atmosphere . the reaction is cooled down to rt and h 2 o ( 30 ml ) is added , filtered through a celite bed and the filtrate is washed three times with etoac ( 30 ml each ). organic layer is collected together and dried ( na 2 so 4 ), filtered and concentrated to dryness . residue is purified by column chromatography to yield xxxiva . synthesis of intermediate xxxivb : to a solution of xxxiva ( 0 . 444 g ) in anhydrous thf ( 21 ml ) is added piperidine ( 6 . 25 ml ) and the reaction mixture is stirred at rt for 3 h . the solvent is evaporated off and the residue is purified by column chromatography ( silica ) to give intermediate xxxivb ( 0 . 26 g ). solid phase synthesis of intermediate xxxivc : a mixture of ps - carbodiimide resin ( 0 . 200 g ), hobt ( 0 . 030 g ), and mono protected peg - cooh ( 0 . 080 g ) in ch 2 cl 2 ( 3 ml ) is stirred for 5 min at rt in a syringe reactor . to the above mixture is added a solution of intermediate xxxivb ( 0 . 080 g ) in ch 2 cl 2 ( 3 ml ) and the reaction mixture is stirred at rt for 3 h . mp - carbonate resin ( 0 . 216 g ) is added and stirred for 2 h at rt . resin is filtered off and then the resin is washed 5 times with ch 2 cl 2 . filtrate is combined and concentrated to dryness to afford intermediate xxxivc . synthesis of xxxvia : xxxivc ( 0 . 12 g ) is treated with zn / acoh exactly in the same as described for the synthesis of intermediate xxxvi to yield intermediate xxxvia ( 0 . 104 g ). to a solution of xxxii from example 7 ( 0 . 015 g ) in dmf ( 0 . 1 ml ) is added hunig base ( 0 . 015 ml ) and then hatu ( 0 . 007 g ). the reaction mixture is stirred for 10 min at rt . a solution of eda - xix from example 4 ( 0 . 010 g in dmf ml ) is added and the reaction mixture is stirred at rt for 8 h . solvent is evaporated off and the residue is purified by sephadex g - 25 chromatography to give glycomimetic - basa of fig8 a ( 0 . 008 g ). coupling between eda - xix and xxxvi : to a solution of xxxvi from example 8 in dmf is added diisopropylethylamine and then hatu . the solution is stirred for 3 min at rt . the above solution is then added to eda - xix with stirring in a conical vial . reaction mixture is stirred for 2 h at rt . solvent is evaporated off to give crude intermediate xxxvib and is used for the next step without further purification . the crude xxxvib is treated with naome - meoh — h 2 o for 2 h and then purified by gel filtration to give a glycomimetic - baca . coupling between eda - xix and xxxvia from example 9 : this coupling reaction is performed exactly in the same way as described for the synthesis of xxxvib to give crude product xxxvic . xxxvic is treated with naome - meoh — h 2 o exactly in the same way as described to afford a glycomimetic - baca . this synthesis is performed in the same way as described in example 10 using xxxiii from example 6 and eda - xix from example 4 to give glycomimetic - basa of fig8 c . alternatively , xxxiii can be replaced with xlv from example 18 for reaction with eda - xix . this synthesis is performed in the same way as described in example 10 using xxxii from example 7 and eda - xxviii from example 5 to give glycomimetic - basa of fig9 a . coupling between eda - xxviii and xxxvi : this coupling reaction is performed exactly in the same way as described for the synthesis of xxxvib to give crude product xxxvid . xxxvid is treated with naome - meoh — h 2 o exactly in the same way as described to afford a glycomimetic - baca . coupling between eda - xxviii and xxxvia : this coupling reaction is performed exactly in the same way as described for the synthesis of xxxvib to give crude product xxxvie . xxxvie is treated with naome - meoh - h 2 o exactly in the same way as described to afford a glycomimetic - baca . this synthesis is performed in the same way as described in example 10 using xxxiii from example 6 and eda - xxviii from example 5 to give glycomimetic - basa of fig9 c . alternatively , xxxiii can be replaced with xlv from example 18 for reaction with eda - xxviii . synthesis of intermediate xxxvii : a solution of intermediate xxiv ( 0 . 1 g ) from example 5 in pyridine is treated with nicotinyl chloride ( 0 . 08 ml ) in pyridine and dimethylaminopyridine ( 0 . 04 g ) in the same way as described in example 5 for the synthesis of intermediate xxv to give intermediate xxxvii ( 0 . 075 g ). synthesis of intermediate xxxviii : intermediate xxxvii ( 0 . 07 g ) is treated with triphenylphosphine and orotic acid chloride in the same way as described in example 4 for the synthesis of compound xvii to give xxxviii ( 0 . 048 g ). synthesis of intermediate xxxix : hydrogenation of intermediate xxxviii ( 0 . 04 g ) with pd / c as described gives compound xxxix ( 0 . 02 g ). synthesis of compound xl : intermediate xxxix ( 0 . 015 g ) is treated with 0 . 5n naoh for 10 min at 60 ° c . to afford compound xl ( 0 . 010 g ) after purification by sephadex g - 25 gel filtration . synthesis of xli : to a suspension of compound xvi ( 0 . 1 g ) in t - buoh - water ( 4ml , 1 : 1 ) is added 1 - ethynyl - 3 - fluorobenzene ( 0 . 9 g ), 1 % cuso4 ( 0 . 1 ml ), and na - i - ascorbate ( 4 mg ). the mixture is heated ( 70 ° c .) with stirring for 20 h . solvent is evaporated off and the residue is dissolved in dichloromethane . organic layer is washed with water dried ( anhydrous sodium sulfate ) and concentrated to dryness . the residue is purified by column chromatography ( silica gel ) to give compound xli ( 0 . 08 g ). synthesis of xlii : compound xli ( 0 . 25 g ) is dissolved in dioxane - water ( 4 : 1 , 7 . 5 ml ). 10 % pd - c ( 0 . 25 g ) is added , followed by acoh ( 7 drops ). the mixture is hydrogenated for 15 h at 40 psi . the reaction mixture is filtered through a celite bed and concentrated to dryness to give compound xlii ( 0 . 2 g ). synthesis of xliii : to a solution of compound xlii ( 0 . 2 g ) in meoh ( 5 ml ) is added a solution of naome in meoh ( 0 . 05 ml ) and the reaction mixture is stirred at room temperature for 2 h . the reaction mixture is neutralized with few drops of acetic acid and concentrated to dryness . residue is purified by column chromatography ( silica gel ) to give compound xliii ( 0 . 15 g ). synthesis of xliv : compound xliii ( 0 . 15 g ) is dissolved in ethylenediamine ( 7 ml ) and the reaction mixture is stirred at 70 ° c . for 9 h . solvent is evaporated off and the residue is first purified by column chromatography ( silica gel ) and then by reverse phase c18 to give compound xliv ( 0 . 11 g ). synthesis of glycomimetic - basa ( compound xlv ): this synthesis is performed in the same way as described in example 10 using xxxiii from example 6 and xliv to give compound xlv . synthesis of compound xlv : to a solution of 3 , 6 - dioxaoctanedioic acid ( peg , 200 mg , available commercially ) in dmf ( 1 ml ) is added hunig base ( 0 . 4 ml ) and then hatu ( 0 . 35 g ) is added after 5 min . the solution is stirred at rt for 10 min and then solution of 8 - aminonaphthalene - 1 , 3 , 6 - trisulfonic acid ( 50 mg , available commercially ) in dmf is added . the reaction mixture is stirred for 4 h at rt and the solvent is evaporated off . the residue is purified by hplc ( reverse - phase c18 column ) to give xlv ( 25 mg ). synthesis of compound xlvi : this synthesis is performed in the same way as described in example 10 using xlv and eda - xix from example 4 to give compound xlvi ( 4 mg ). synthesis of xlvii : starting with compound xxiv , this synthesis is performed in the same way as described for the synthesis of xli to give compound xlvi . synthesis of xlviii : starting with compound xlvii , this synthesis is performed in the same way as described for compound xliii ( from xli ) to give compound xlviii . synthesis of xlix : starting with compound xlviii , this synthesis is performed in the same way as described for the synthesis of xliv to give compound xlix . synthesis of glycomimetic - basa ( compound l ): this synthesis is performed in the same way as described in example 10 using xxxiii from example 6 and xlix to give compound l . alternatively , xxxiii can be replaced with xlv from example 18 for reaction with xlix . synthesis of compound i : as described in the literature [ j . org . chem . 54 , 3738 - 3740 ( 1989 ); liebigs annalen der chemie 575 , 1 ( 1952 )] synthesis of intermediate ii : i ( 2 . 8 g , 15 . 04 mmol ), pyridine ( 4 . 8 ml , 60 . 15 mmol ), benzoylchloride ( 3 . 5 ml , 30 . 07 mmol ) and a catalytical amount of dimethyl aminopyridine are stirred in dichloromethane ( 6 ml ) at room temperature (“ r . t .”). after 2 h , tlc control shows completion of the reaction . the reaction mixture then is diluted with ethyl acetate ( 200 ml ) and washed with water , 1n aqueous hcl ( ice - cooled ), saturated aqueous nahco 3 and brine ( each 50 ml ). the aqueous layers are washed twice with ethyl acetate ( 2 × 150 ml ), combined and dried with na 2 so 4 . after filtration and evaporation of the solvent the residue is purified by chromatography on silica gel ( pe / etoac 4 : 1 ) to yield compound ii ( 3 . 78 g , 86 %). synthesis of intermediate iii : ii ( 3 . 78 g , 13 . 02 mmol ) and nabh 4 are stirred in methanol ( 35 ml ) at 0 ° c . after 30 min . the reaction mixture is quenched with water ( 15 ml ) and neutralized with 1n aqueous acoh . again water ( 10 ml ) is added and the mixture is extracted 3 times with dichloromethane ( 3 × 150 ml ). the combined organic layers are dried with na 2 so 4 , filtered and evaporated . chromatography of the residue on silica gel ( pe / etoac 3 . 2 ) gives compound iii ( 3 . 7 g , 97 %). [ α ] d + 79 . 78 ° ( c = 0 . 940 , ch 2 cl 2 ); synthesis of intermediate iv : to a solution of iii ( 3 . 4 mg , 11 . 64 mmol ) in chcl 3 ( 50 ml , filtered on basic alox ) at r . t . under argon is added 1 - chloro - n , n , 2 - trimethylpropenylamine ( 4 . 94 ml , 34 . 93 mmol ) by a syringe . the reaction mixture is stirred at reflux until tlc control indicated completion of the reaction ( 30 min .) after cooling to r . t . the reaction mixture is quenched with triethylamine ( 6 ml ) and evaporated ( bath temperature 30 ° c .) to dryness . the residue is purified by chromatography on silica gel ( pe / etoac 9 : 1 ) to yield compound iv ( 3 . 3 g , 92 %). synthesis of intermediate v : to a solution of iv ( 3 . 25 g , 10 . 47 mmol ) in dry toluene ( 40 ml ) under argon are added freshly distilled bu 3 snh ( 30 . 58 ml , 115 . 14 mmol ) and albn ( 1 . 7 g , 10 . 47 mmol ). the reaction is refluxed . after 75 min ., when tlc shows completion of the reaction , the reaction mixture is cooled to r . t . and then diluted with acetonitrile ( 50 ml ). the solution is washed with hexane ( 50 ml ) and the hexane layer is extracted again with acetonitrile ( 50 ml ). the combined acetonitrile layers are evaporated . chromatography of the residue on silica gel ( toluene / etoac 14 : 1 ) yields compound v ( 2 . 66 g , 92 %). [ α ] d − 117 . 79 ° ( c = 1 . 810 , ch 2 cl 2 ). synthesis of intermediate vi : a solution of v ( 2 . 63 g , 9 . 54 mmol ) in aqueous acoh 80 % is stirred at 80 ° c . when tlc control indicates completion of the reaction ( 30 min . ), reaction mixture is cooled to r . t . after neutralizing with aqueous naoh , the mixture is extracted 3 times with dichloromethane ( 3 × 200 ml ). the combined organic layers are dried with na 2 so 4 , filtered and evaporated to dryness . the residue is purified by chromatography on silica gel ( pe / etoac 3 : 2 ) to yield compound vi ( 2 . 01 g , 89 %). [ α ] d − 54 . 860 ° ( c = 1 . 420 , ch 2 cl 2 ). synthesis of intermediate vii : a solution of vi ( 1 . 98 g , 8 . 39 mmol ), freshly recrystallized toluene - 4 - sulfonylchloride ( 1 . 9 g , 10 . 07 mmol ), bu 2 sno ( 2 . 09 g , 8 . 39 mmol ) and triethylamine ( 1 . 8 ml , 16 . 78 mmol ) in dry dichloromethane ( 40 ml ) is stirred at r . t . under argon . after 20 h , tlc control indicated completion of the reaction . the reaction mixture is then quenched with methanol ( 15 ml ) and then evaporated to dryness . chromatography of the residue on silica gel ( toluene / etoac 8 : 1 ) gives compound vii ( 2 . 65 g , 85 %). [ α ] d − 68 . 080 ° ( c = 0 . 448 , ch 2 cl 2 ). synthesis of intermediate viii : a mixture of vii ( 640 mg , 1 . 71 mmol ) and nan 3 ( 555 mg , 8 . 55 mmol ) in dmf ( 30 ml ) is stirred under argon at 80 ° c . when tlc control shows completion of the reaction ( after 1 h ), the reaction mixture is cooled to r . t ., diluted with dichloromethane ( 50 ml ) and washed with water ( 50 ml ). the aqueous layer is then extracted twice with dichloromethane ( 2 × 50 ml ) and the combined organic layers are dried with na 2 so 4 , filtered and evaporated . the residue is purified by chromatography on silica gel ( toluene / etoac 6 : 1 ) to yield compound viii ( 391 mg , 87 %). [ α ] d − 69 . 39 ° ( c = 2 . 330 , ch 2 cl 2 ). synthesis of intermediate ix : to a stirred solution of ethyl 2 , 3 , 4 - tri - o - benzyl - α - l - fucothiopyranoside ( 223 mg , 0 . 47 mmol ) in dry dichloromethane ( 1 ml ) at 0 ° c . under ar atmosphere , bromine ( 48μ , 0 . 54 mmol ) is added . after 5 min . the cooling bath is removed and the reaction mixture is stirred for additional 40 min . at r . t . to remove the excess of bromine , cyclohexene ( 50 μl ) is added , leading to a decolorization of the reaction mixture . then the reaction mixture is added to a pre - stirred solution ( 1 h , r . t .) of viii ( 61 mg , 0 . 23 mmol ), ( et ) 4 nbr ( 98 mg , 0 . 47 mmol ) and powdered 4 å molecular sieves ( 100 mg ) in dichloromethane ( 1 . 6 ml ) and dmf ( 1 ml ). after 18 h , the reaction is quenched with pyridine ( 2 ml ) and stirred for additional for 15 min ., before it is diluted with etoac ( 50 ml ) and washed with sat . aqueous khco 3 , water and brine ( each 50 ml ). the aqueous layers are extracted twice with etoac ( 2 × 50 ml ). the combined organic layers are dried with na 2 so 4 , filtered and evaporated to dryness . the residue is purified by chromatography on silica gel ( toluene / etoac 9 : 1 ) to yield ix ( 116 mg , 73 %). [ α ] d − 95 . 96 ° ( c = 1 . 040 , ch 2 cl 2 ). synthesis of intermediate x : ix ( 530 mg , 0 . 78 mmol ) in meoh ( 10 ml ) and a catalytical amount of freshly prepared naome are stirred at r . t . under ar for 48 h . the reaction mixture is neutralized with powdered amberlyst - 15 and filtered over celite . the filtrate is evaporated to dryness and purified by chromatography on silica gel ( toluene / etoac 9 : 1 ) to give compound x ( 380 mg , 85 %). [ α ] d − 76 . 425 ° ( c = 4 . 00 , ch 2 cl 2 ). synthesis of intermediate xi : a mixture of x ( 184 mg , 0 . 32 mmol ), the galactose building block [ 375 mg , 0 . 4811 mmol , synthesis as described previously , helv . chim . acta 83 : 2893 - 2907 ( 2000 )] and activated powdered molecular sieves 4 å ( 200 mg ) in dichloromethane ( 3 ml ) is stirred at r . t . under argon for 4 h . then dmtst [ b ] ( 165 mg , 0 . 64 mmol ) is added in 4 equal portions over a period of 1 . 5 h to a pre - stirred mixture ( 4 h , r . t .) of activated powered molecular sieves 4 å ( 100 mg ) in dichloromethane ( 3 ml ). after 92 h , when tlc control shows completion of the reaction , the reaction mixture is filtered over celite and the filtrate is diluted with dichloromethane ( 50 ml ). the organic layer is washed with sat . aqueous nahco 3 and brine ( each 20 ml ) and the aqueous layers are extracted twice with dichloromethane ( 2 × 50 ml ). the combined organic layers are dried with na 2 so 4 , filtered and evaporated to dryness . the residue is purified by chromatography on silica gel ( toluene / etoac 9 : 1 ) to yield compound xi ( 310 mg , 75 %). [ α ] d − 36 . 98 ° ( c = 2 . 32 , ch 2 cl 2 ). synthesis of intermediate xii : to a stirred solution of xi ( 100 mg , 0 . 077 mol ) in dry dichloromethane ( 3 ml ), acetic acid chloride ( 27 μl , 0 . 387 mmol ) is added . after 5 min . pph 3 ( 101 mg , 0 . 387 mmol ) is added and the solution is stirred at r . t . when tlc after 22 h shows completion of the reaction , the solvent is removed and the residue chromatographed on silica gel ( toluene / etoac 2 : 1 ) yielding compound xii ( 43 mg , 43 %). [ α ] d − 55 . 33 ° ( c = 2 . 185 , ch 2 cl 2 ). synthesis of intermediate xiii : according to procedure a : xi ( 80 mg , 0 . 062 mol ) with orotic acid chloride ( 59 mg , 0 . 310 mmol ) and pph 3 ( 81 mg , 0 . 310 mmol ), 4 h , ( dichloromethane / meoh 25 : 1 ) gives compound xiii ( 35 mg , 40 %). [ α ] d − 26 . 08 ° ( c = 1 . 48 , ch 2 cl 2 ). synthesis of intermediate xiv : according to procedure a : xi ( 70 mg , 0 . 054 mmol ) with biphenyl - 4 - carboxylic acid chloride ( 58 mg , 0 . 271 mmol ) and pph 3 ( 71 mg , 0 . 271 mmol ), 4 h , ( toluene / etoac 6 : 1 ) gives xiv ( 22 mg , 28 %). [ α ] d − 32 . 11 ° ( c = 1 . 065 , ch 2 cl 2 ). synthesis of intermediate xv : according to procedure a : xi ( 45 mg , 0 . 035 mmol ) with biphenyl - 2 - carboxylic acid chloride ( 125 mg . 0 . 577 mmol ) and pph 3 ( 151 mg , 0 . 577 mmol ), 5 h , ( toluene / etoac 6 : 1 ), gives compound xv ( 22 mg , 44 %). [ α ] d − 19 . 54 ° ( c = 1 . 10 , ch 2 cl 2 ). synthesis of intermediate xvi : a mixture of xi ( 120 mg , 0 . 093 mmol ) and pph 3 ( 30 mg , 0 . 116 mmol ) in ch 2 cl 2 ( 2 ml ) and water ( 100 μl ) is stirred for 44 h at r . t . then the solvents are removed and the residue dissolved in ch 2 cl 2 ( 2 ml ) and dic ( 11 . 8 mg , 0 . 094 mmol ) and the vanillic acid ( 24 mg , 0 . 139 mmol ) are added . after the mixture is stirred at r . t . for additional 62 h , the solvents are removed and the crude product is purified by chromatography on silica gel ( toluene / etoac 2 . 5 : 1 ) to give compound xvi ( 62 mg , 47 %). [ α ] d − 29 . 58 ° ( c = 2 . 86 , ch 2 cl 2 ). synthesis of intermediate xvii : a mixture of xii ( 40 mg , 0 . 0306 mmol ), pd ( oh ) 2 ( 30 mg ), dioxane ( 2 ml ) and water ( 0 . 4 ml ) is hydrogenated in a parr - shaker under 5 bar at r . t . after 20 h tlc control indicated completion of the reaction . the reaction mixture is filtered over celite and evaporated to dryness . purification of the crude product by chromatography ( ch 2 cl 2 / meoh 9 : 1 ) yielded xvii ( 20 mg , 69 %). [ α ] d − 43 . 50 ° ( c = 1 . 00 , meoh ). synthesis of intermediate xviii : according to procedure c : xiv ( 26 mg , 0 . 018 mmol ), pd ( oh ) 2 ( 11 mg ), dioxane ( 1 . 2 ml ), water ( 0 . 25 ml ), 50 h , ( ch 2 cl 2 / meoh 2 : 1 ) gives xviii ( 10 mg , 50 %). synthesis of intermediate xix : according to procedure c : xv ( 22 mg , 0 . 015 mmol ), pd ( oh ) 2 ( 20 mg ), dioxane ( 1 ml ), water ( 0 . 25 ml ), 22 h , ( ch 2 cl 2 / meoh 15 : 1 ) gives compound xix ( 13 mg , 82 %). [ α ] d − 9 . 50 ° ( c = 1 . 21 , meoh ). synthesis of intermediate xxi : according to procedure c : xiii ( 21 mg , 0 . 015 mmol ), pd ( oh ) 2 ( 20 mg ), dioxane ( 1 ml ), water ( 0 . 25 ml ), 22 h , ( ch 2 cl 2 / meoh 15 : 1 ) gives compound xxi ( 13 mg , 86 %). synthesis of intermediate xx : a mixture of xvi ( 20 mg , 0 . 0141 mmol ), 10 % pd / c ( 20 mg ) meoh ( 2 ml ) and acoh ( 50 μl ) is stirred under a hydrogen atmosphere . when tlc control indicated completion of the reaction ( after 22 h ), the mixture is filtered over celite and evaporated to dryness . chromatography of the residue on silica gel ( ch 2 cl 2 / meoh 2 : 1 ) gives xx ( 15 mg , quant .). [ α ] d − 29 . 32 ° ( c = 1 . 105 , meoh ). synthesis of product xxii : a solution of xvii ( 27 mg , 0 . 0278 mmol ) in dry meoh ( 1 ml ) and a catalytic amount of freshly prepared naome is stirred at r . t . under argon . after 1 h , tlc control shows completion of the reaction . the reaction mixture is neutralized with powdered amberlyst - 15 , filtered over celite and the filtrate evaporated to dryness . the residue is dissolved in meoh ( 20 ml ) and filtered over ion - exchange dowex na ⊕. the filtrate is evaporated to dryness and chromatography ( ch 2 cl 2 / meoh / water 10 : 4 : 0 . 8 ) of the crude product gives xxii ( 12 mg , 56 %). [ α ] d − 97 . 49 ° ( c = 0 . 546 , meoh ). synthesis of product xxiii : according to procedure d : xviii ( 9 . 0 mg , 0 . 0083 mmol ), 2 h , ( ch 2 cl 2 / meoh / water 10 : 3 : 0 . 5 ) gives compound xxiii ( 7 . 5 mg , quant .). [ α ] d − 79 . 50 ° ( c = 0 . 400 , meoh ). synthesis of product xxiv : according to procedure d : xix ( 23 mg , 0 . 0212 mmol ), meoh ( 2 ml ), 2 . 5 h , ( ch 2 cl 2 / meoh / water 10 : 3 : 0 . 5 ) gives compound xxiv ( 7 . 0 mg , 39 %). [ α ] d − 54 . 54 ° ( c = 0 . 586 , meoh ). synthesis of product xxv : according to procedure d : xx ( 19 mg , 0 . 0180 mmol ), meoh ( 2 ml ), 4 h , ( ch 2 cl 2 / meoh / water 10 : 3 : 0 . 5 ) gives compound xxv ( 10 . 5 mg , 70 %.) [ α ] d − 69 . 96 ° ( c = 0 . 793 , meoh ). synthesis of product xxvi : according to procedure d : xxi ( 19 mg , 0 . 0180 mmol ), meoh ( 2 ml ), 4 h , ( ch 2 cl 2 / meoh / water 10 : 3 : 0 . 5 ) gives compound xxvi ( 10 mg , 65 %.). wells of a microtiter plate ( plate 1 ) are coated with e - selectin / hlg chimera ( glycotech corp ., rockville , md .) by incubation for 2 hr at 37 ° c . after washing the plate 5 times with 50 mm trishcl , 150 mm nacl , 2 mm cacl 2 , ph 7 . 4 ( tris - ca ), 100 μl of 1 % bsa in tris - ca / stabilcoat ( surmodics , eden prairie , minn .) ( 1 : 1 , v / v ) are added to each well to block non - specific binding . test compounds are serially diluted in a second low - binding , round bottomed plate ( plate 2 ) in tris - ca ( 60 μl / well ). preformed conjugates of slea - paa - biotin ( glycotech corp ., rockville , md .) mixed with streptavidin - hrp ( sigma , st . louis , mo .) are added to each well of plate 2 ( 60 μl / well of 1 μg / ml ). plate 1 is washed several times with tris - ca and 100 μl / well are transferred from plate 2 to plate 1 . after incubation at room temperature for exactly 2 hours the plate is washed and 100 μl / well of tmb reagent ( kpl labs , gaithersburg , md .) is added to each well . after incubation for 3 minutes at room temperature , the reaction is stopped by adding 100 μl / well of 1 m h 3 po 4 and the absorbance of light at 450 nm is determined by a microtiter plate reader . the neoglycoprotein , sialylle a - hsa ( isosep ab , sweden ) is coated onto wells of a microtiter plate ( plate 1 ) and the wells are then blocked by the addition of 2 % bovine serum albumin ( bsa ) diluted in dulbecco &# 39 ; s phosphate - buffered saline ( dpbs ). in a second microtiter plate ( plate 2 ), test antagonists are serially diluted in 1 % bsa in dpbs . after blocking , plate 1 is washed and the contents of plate 2 are transferred to plate 1 . pselectin / hig recombinant chimeric protein ( glycotech corp ., rockville , md .) is further added to each well in plate 1 and the binding process is allowed to incubate for 2 hours at room temperature . plate 1 is then washed with dpbs and peroxidase - labelled goat anti - human ig ( γ ) ( kpl labs , gaithersburg , md .) at 1 μg / ml is added to each well . after incubation at room temperature for 1 hour , the plate is washed with dbps and then tmb substrate ( kpl labs ) is added to each well . after 5 minutes , the reaction is stopped by the addition of 1 m h 3 po 4 . absorbance of light at 450 nm is then determined using a microtiter plate reader . anti - inflammatory mouse model . effects of test compound on il - 1β - induced neutrophil migration to an air pouch in vivo . ( fig1 ) male outbred swiss albino mice ( 15 - 18 g body weight ) are purchased from bantin and kingman ( t . o . strain ; hull , humberside ) and maintained on a standard chow pellet diet with tap water ad libitum and a 12 : 00 h light / dark cycle . all animals are housed for 7 days prior to experimentation to allow body weight to reach ˜ 25 g on the day of the experiment ( day 6 ; see below ) air - pouches are formed on the back of mice by air injection ( 2 . 5 ml s . c .) on day 0 and day 3 ( perretti & amp ; flower , 1993 ). a homogenous suspension of carboxymethylcellulose ( cmc ) is made at 0 . 5 % w / v in pbs and murine recombinant il - 1β added to it at a concentration of 20 ng / ml . test compound is given at time 0 just before il - 1β administration . an extra group is also added , in which a group of mice received cmc only ( no il - 1β ) to provide a basal negative control . in all cases , air - pouches are washed 4 h after il - 1β with 2 ml of pbs containing 3 mm edta , and the number of migrated leukocytes (≧ 90 % polymorphonuclear leukocytes , pmn ) determined , by taking an aliquot ( 100 μl ) of the lavage fluid and diluting 1 : 10 in turk &# 39 ; s solution ( 0 . 01 % crystal violet in 3 % acetic acid ). the samples are then vortexed and 10 μl of the stained cell solution are placed in a neubauer haematocymometer and neutrophils numbers counted using a light microscope ( olympus b061 ). on the day of the experiment , a fresh solutions of test compound is prepared in pbs dulbecco &# 39 ; s buffer supplemented with 1 mm cacl 2 and mgcl 2 . monoclonal antibodies ( mab ) against mouse p - or e - selectin are purchased from bd pharmingen , whereas the anti - l - selectin mab is from serotec : rat anti - mouse l selectin ( clone mel - 14 ): 1 mg rat anti - mouse p - selectin ( clone rb40 . 34 ): 0 . 5 mg / ml rat anti - mouse e - selectin ( clone 10e9 . 6 ): 0 . 5 mg / ml mouse 6 - day old air - pouches are inflamed with il - 1β ( 10 ng ) at time 0 ; example 17 glycomimetic - basa ( fig1 ) and example 12 glycomimetic - basa ( fig8 c ) are given i . v . at time 0 and 4 h ; and the mix of anti - selectin mab is given i . v . at time 0 . air - pouches are washed at the 8 h time - point and the number of migrated pmn determined by staining and light microscopy . the n number is 9 , 8 , 7 and 8 mice per group a , b , c and d , respectively , in fig1 . all of the above u . s . patents , u . s . patent application publications , u . s . patent applications , foreign patents , foreign patent applications and non - patent publications referred to in this specification and / or listed in the application data sheet , are incorporated herein by reference , in their entirety . from the foregoing it will be appreciated that , although specific embodiments of the invention have been described herein for purposes of illustration , various modifications may be made without deviating from the spirit and scope of the invention .
compounds and methods are provided for modulating in vitro and in vivo processes mediated by selectin binding . more specifically , selectin modulators and their use are described , wherein the selectin modulators that modulate a selectin - mediated function comprise particular glycomimetics alone or linked to a member of a class of compounds termed basas or a member of a class of compounds termed bacas .