作者:Xuan Zhou、Tao Xiao、Yusuke Iwama、Yong Qin
DOI:10.1002/anie.201201736
日期:2012.5.14
Challenging: (+)‐gelsemine was synthesized from (R,R)‐aziridine 1 in 25 steps with approximately 1 % overall yield. A multistep, one‐pot enol–oxonium cyclization cascade was used to construct, simultaneously, the E ring, F ring, C3 stereocenter, and C7 quaternary stereocenter. This synthesis using the enol–oxonium cyclization reaction as a key step to make the cage structure has demonstrated the proposed
具有挑战性的:(+)-氯胺酮是由(R,R)-氮丙啶1分25步合成的,总收率约为1%。通过多步一锅烯醇-氧鎓环化级联反应,可同时构建E环,F环,C3立体中心和C7四元立体中心。使用烯醇-氧鎓环化反应作为关键步骤来制备笼状结构的合成方法,证明了所建议的明胶胺家族的生物合成途径。