hat
Li se pwoblèmatik[3], ki rediksyon ak oksidasyon ap enfliyanse pa enstabilite nan DHA ak DKG. Se poutèt sa konsantrasyon ekimolè yo nan NADH redwi sèlman enparfetman[25] DHA a[17] nan entèval[18] la pH[4] fizyolojik paske[12] nan saponifikasyon plis la nan DHA a[17]. Menm an ale pou rediksyon pa sibstans yo ki gen gwoup H–S, pou ki yon lòd[23] aparan pou reyaksyon, menm jan (ak) pou saponifikasyon nan DHA, te jwenn[24]. Sepandan[7], yon eta entèmedyè ki reyaksyon rediksyon reyèl la nan DHA, se pwouve espektwoskopikman enfrawouj pa reyaksyon avèk gwoup H–S. Diferans espektwoskopik enfrawouj klè yo te jwenn nan reyaksyon oksidasyon ant derivatif, ki se enkapab oswa kapab pou fè siklizasyon nan C(6)–O–C(3).
eng
It is problematic[52] that reduction[55] and oxidation[4] are[53C] influenced[33A] by instabilities[34] of DHA and DKG. Thus[35], equimolar NADH concentrations reduce[55A] the DHA only incompletely[36] in the physiological pH[54] range because of the additional DHA saponification. The same thing is valid[37] with reductions[55] by H–S-group containing substances for which[38] an apparent reaction order similar to the DHA saponification was[53] found. However, one intermediate state to which[39] the real reduction[55] reaction of DHA follows is[53B] proven[40] infrared spectroscopically[16] during reactions by H–S groups. Clear infrared spectroscopic differences were[53A] found at oxidation[4] reactions between derivatives, which are incapable or capable of C(6)–O–C(3) - cyclization[41].