Enantioselective synthesis of (3R,4E)-19-methylicos-4-en-1-yn-3-ol, a bioactive metabolite of the marine sponge Cribrochalina vasculum
作者:Jordi Garcia、Marta López、Joan Romeu
DOI:10.1016/s0957-4166(99)00251-7
日期:1999.7
The first stereoselective synthesis of (3R,4E)-19-methyiicos-4-en-1-yn-3-ol, an immunosuppressive and antitumoral metabolite isolated from the Caribbean sponge Cribrochalina vasculum, has been achieved and its stereostructure has been confirmed. The key step of the synthesis involves a borane-mediated reduction of the parent (E)-19-methyl-1-trimethylsilylicos-4-en-1-yn-3-one in the presence of a chiral oxazaborolidine. (C) 1999 Elsevier Science Ltd. All rights reserved.