Scheme 4From: Regioselectivity of 1,3-dipolar cycloadditions and antimicrobial activity of isoxazoline, pyrrolo[3,4-d]isoxazole-4,6-diones, pyrazolo[3,4-d]pyridazines and pyrazolo[1,5-a]pyrimidinesSynthesis of pyrazolo[1,5-a]pyrimidines (12a,b)Back to article page