The Enantioselective Total Synthesis of Exochomine
作者:Alison X. Gao、Tomoaki Hamada、Scott A. Snyder
DOI:10.1002/anie.201604744
日期:2016.8.22
centers connect two seemingly different halves or include a nitrogen atom. Herein, we describe an efficient approach to a molecule that combines both challenges in a single center in the form of exochomine. Failures in direct coupling led to a design fueled by highly specific reaction conditions for several steps and the development of an improved protocol for 1,4‐reduction in a hindered context where