Turnagainolides A and B, Cyclic Depsipeptides Produced in Culture by a <i>Bacillus</i> sp.: Isolation, Structure Elucidation, and Synthesis
作者:Dehai Li、Gavin Carr、Yonghong Zhang、David E. Williams、Ashraf Amlani、Helen Bottriell、Alice L.-F. Mui、Raymond J. Andersen
DOI:10.1021/np200033y
日期:2011.5.27
depsipeptides, turnagainolides A (1) and B (2), have been isolated from laboratory cultures of a marine isolate of Bacillus sp. The structures of 1 and 2, which are simply epimers at the site of macrolactonization, were elucidated by analysis of NMR data and chemical degradation. A total synthesis of the turnagainolides confirmed their structures. Turnagainolide B (2) showed activity in a SHIP1 activation