作者:R. Karl Dieter、Ningyi Chen
DOI:10.1021/jo060717q
日期:2006.7.1
by the reaction of the in situ generated enantioenriched stereogenic cuprate reagent with (E)-4-bromo-1-iodo-1-trimethylsilyl-1-butene with retention of configuration. N-Boc deprotection, followed by a one-pot olefin isomerization and intramolecular amine alkylation afforded a bicyclic vinyl bromide that was converted into (+)-elaeokanine A by sequential halogen metal exchange and reaction of the organolithium
N- Boc吡咯烷的不对称去质子化反应,然后原位生成的对映体富集的立体铜酸盐试剂与(E)-4-溴-1-碘的反应,完成了(+)-eokanokine A总合成中的关键转化。具有保留构型的-1-三甲基甲硅烷基-1-丁烯。N- Boc脱保护,然后进行一锅烯烃异构化和分子内胺烷基化,得到双环乙烯基溴化物,该溴化物通过顺序地进行卤素金属交换并将有机锂试剂与N-丁酰酰基吗啉反应而转化为(+)-elaeokanineA 。