Enantioselective synthesis of Iboga alkaloids and vinblastine via rearrangements of quaternary ammoniums
作者:Yun Zhang、Yibin Xue、Gang Li、Haosen Yuan、Tuoping Luo
DOI:10.1039/c6sc00932h
日期:——
and novel strategy for the enantioselective syntheses of various iboga alkaloids has been developed. The salient features include a gold-catalyzed oxidation of a terminal alkyne followed by cyclization, a Stevens rearrangement and a tandem sequence that combines the gold-catalyzed oxidation, cyclization and [1,2]-shift. The catharanthine analogs provided by our approach were further converted to the
已经开发出一种有效且新颖的策略,用于各种伊博加生物碱的对映体选择性合成。其显着特征包括末端炔的金催化氧化,随后环化,史蒂文斯重排和串联序列,该序列结合了金催化的氧化,环化和[1,2]移位。我们的方法提供的catharanthine类似物进一步转化为长春花生物碱长春碱及其类似物,这证实了细胞毒性对长春碱C20'取代基的显着敏感性。