作者:Manolis Sofiadis、Dongmin Xu、Anthony J. Rodriguez、Benedikt Nissl、Sebastian Clementson、Nadia Nasser Petersen、Phil S. Baran
DOI:10.1021/jacs.3c09085
日期:2023.10.11
A concise and enantioselective total synthesis of the Veratrum alkaloid cyclopamine is disclosed. This highly convergent synthesis with a 16-step longest linear sequence (LLS) was enabled by a de novo synthesis of the trans-6,5-heterobicycle via a strain-inducing halocyclization process, a key Tsuji–Trost cyclization to construct the fully substituted, spirocyclic THF motif with exquisite diastereocontrol