The first total synthesis of (+)-rogioloxepane A is described. The alpha,omega -trans-disubstituted oxepene skeleton was stereoselectively constructed via cyclization of the hydroxy epoxide promoted by the (Bu3Sn)(2)O/Zn(OTf)(2) system. The proposed configurations of 6R and 13R were confirmed through this synthetic study. (C) 2001 Elsevier Science Ltd. All rights reserved.
Enantioselective Total Synthesis of (+)-Rogioloxepane A
摘要:
graphicThe enantioselective synthesis of (+)-rogioloxepane A has been achieved in 21 steps from 1,5-hexadien-3-ol. The key steps in the synthesis are an asymmetric glycolate alkylation leading to the diene 2 and a subsequent ring-closing metathesis to construct the oxepene core.