摘要:
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 RCM reaction to construct the aza fused bicyclic framework. (C) 2014 Feng-Ling Qing. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.