作者:Hongbin Zhai、Shengjun Luo、Chengfeng Ye、Yongxiang Ma
DOI:10.1021/jo0348726
日期:2003.10.1
8O-methylaphanorphine was synthesized from 4-methoxyphenylacetaldehyde in 36% overall yield and in nine steps, featuring the formation of ring B via a Friedel-Crafts alkylative cyclization with the concomitant stereospecific introduction of the benzylic quaternary carbon center. The current work constitutes an efficient enantioselective formal synthesis of 3-benzazepine marine alkaloid (-)-aphanorphine