the National Natural Science Foundation of China (Nos. 21272036, 21332010);the National Basic Research Program of China (No. 2012CB21600)
A novel gem-difluoromethylenated castanospermine analogue B was designed and synthesized, starting from 3-bromo-3,3-difluoropropene and L-(-)-malic acid. The key steps involve substitution cyclization reaction and R...