Total Synthesis of (−)-Spirangien A, an Antimitotic Polyketide Isolated from the Myxobacterium<i>Sorangium Cellulosum</i>
作者:Ian Paterson、Alison D. Findlay、Christian Noti
DOI:10.1002/asia.200800445
日期:2009.4.6
A stereocontrolled total synthesis of the cytotoxic spiroacetal‐containing polyketide (−)‐spirangien A is described. This utilizes an aldol‐based strategy to construct a common stereotetrad intermediate that was elaborated into the spiroacetal core, followed by the introduction of the unstable pentaene‐containing side chain, performed with exclusion of light, using sequential Stille cross‐coupling
Total synthesis of (−)-spirangien A and its methyl ester
作者:Ian Paterson、Alison D. Findlay、Christian Noti
DOI:10.1039/b816229h
日期:——
The first total synthesis of (-)-spirangien A, a cytotoxic and antifungal polyketide of myxobacterial origin, is reported; this exploits a Stork-Wittig olefination and double Stille cross-coupling sequence to install the sensitive pentaene side chain onto a fullyelaborated spiroacetal core, leading initially to the methyl ester of spirangien A.