Synthesis of norbornane series tetra- and hexahydropyrimidines
Condensation of exo-2-amino-exo-3-aminomethylnorbornane with acetone, methyl cyclopropyl ketone, cyclohexanone, urea, and formic, acetic, and benzoic acids gave norbornane series tetra- and hexa-hydropyrimidines. It was found that 4-cyclopropyl-4-methyl-exo-3,5-diazatricyclo[6.2.1.02,7]undecane and 4-methyl-exo-3,5-diazatricyclo[6.2.1.02,7]undec-3-ene show analgesic activity.