甲酸

3,4-diamino-2,5-diphenyl-6-hydroxymethyl pyridine

ethyl 4,5-dihydro-4,7-diphenyl-1,2,5-oxadiazolo(3,4-c)pyridine-6-carboxylate

ethyl 4,7-diphenyl-1,2,5-thiadiazolo[3,4-c]pyridine-6-carboxylate

ethyl 4,7-diphenyl-1,2,5-oxadiazolo[3,4-c]pyridine-6-carboxylate