Iterative Cyclopropanation: A Concise Strategy for the Total Synthesis of the Hexacyclopropane Cholesteryl Ester Transfer Protein Inhibitor U-106305
作者:Anthony G. M. Barrett、Dieter Hamprecht、Andrew J. P. White、David J. Williams
DOI:10.1021/ja9708326
日期:1997.9.1
The first enantioselective totalsynthesis of the hexacyclopropane natural product U-106305, which is produced by Streptomyces sp. UC 11136, is described in full detail. Considerations on the biosynthesis of U-106305 and its close resemblance to the pentacyclopropane bacterial metabolite FR-900848 (10) led to the proposal that its previously unknown stereostructure should be represented as 11. The