Total Synthesis of (−)-18-<i>epi</i>-Peloruside A: An Alkyne Linchpin Strategy
作者:Barry M. Trost、David J. Michaelis、Sushant Malhotra
DOI:10.1021/ol4024997
日期:2013.10.18
hinges on the use of an alkyne linchpin to assemble the natural product is described. Other highlights of this synthesis include an asymmetric desymmetrization reaction of a 1,3-diol, a one-pot conversion of a dibromoolefin to a stereodefined enone, and a diastereoselective aldol condensation. Misassignment of the absolute stereochemistry of the C18 stereocenter in our synthesis provided the natural product
描述了细胞毒性剂 peloruside A 的聚合合成路线,该路线取决于使用炔烃关键来组装天然产物。该合成的其他亮点包括 1,3-二醇的不对称去对称反应、二溴烯烃一锅法转化为立体定义的烯酮以及非对映选择性羟醛缩合。我们的合成中 C18 立体中心的绝对立体化学的错误分配提供了 C18 乙基立体中心处的天然产物差向异构体。
The Synthesis of an Exhaustively Stereodiversified Library of <i>cis</i>-1,5 Enediols by Silyl-Tethered Ring-Closing Metathesis
作者:Bryce A. Harrison、Gregory L. Verdine
DOI:10.1021/ol0159569
日期:2001.7.1
[reaction: see text] This report describes the parallel synthesis of all 16 stereoisomers of the cis-1,5 enediol module 1. Compounds 1 derive from 2 by silicon-tethered ring-closing metathesis. Such libraries of stereodiversified ligands provide a unique approach to ligand discovery that employs exhaustive searching of conformational space.
Studies directed toward the synthesis of viridenomycin. Route 1: assembly of three advanced intermediates
作者:Albert W Kruger、A.I Meyers
DOI:10.1016/s0040-4039(01)00700-6
日期:2001.6
Three enantiomerically and geometrically pure building blocks representing fragments of the antifungal antibiotic viridenomycin have been prepared.
已经制备了代表抗真菌抗生素viridenomycin片段的三个对映异构体和几何纯净的结构单元。
Total Synthesis of Epothilones B and D
作者:Richard E. Taylor、Yue Chen
DOI:10.1021/ol010094x
日期:2001.7.1
[reaction: see text] A highly convergent totalsynthesis of the natural products epothilone B and D is described. The route is highlighted by efficient generation of a C12-C13 trisubstituted olefin which exploits a sequential Nozaki-Hiyama-Kishi coupling and a stereoselective thionyl chloride rearrangement.