A Unified Approach for the Enantioselective Synthesis of the Brominated Chamigrene Sesquiterpenes
作者:Alexander J. Burckle、Vasil H. Vasilev、Noah Z. Burns
DOI:10.1002/anie.201605722
日期:2016.9.12
natural products, yet no general enantioselective strategy for the synthesis of these small molecules exists. Herein we report a generalstrategy for accessing this family of secondary metabolites, including the enantioselective synthesis of (−)‐α‐ and (−)‐ent‐β‐bromochamigrene, (−)‐dactylone, and (+)‐aplydactone. Access to these molecules is enabled by a stereospecific bromopolyene cyclization initiated
溴化的半萜倍半萜构成了含溴环己烷的天然产物的一大类,但不存在合成这些小分子的通用对映选择性策略。在此,我们报告了获取该次级代谢物家族的一般策略,包括(−)-α-和(−)- ent -β-bromochamigrene、(−)-dactylone和(+)-aplydactone的对映选择性合成。通过对映体富集的邻位溴氯化物的溶剂分解引发立体特异性溴多烯环化,从而能够获得这些分子。