作者:Jhillu S. Yadav、K. V. Raghavendra Rao、K. Ravindar、B. V. Subba Reddy
DOI:10.1002/ejoc.201001199
日期:2011.1
A highly stereoselective total synthesis of an aliphatic depside (+)-bourgeanic acid via (-)-hemibourgeanic acid and bourgeanic lactone is described. The key steps involved in this synthesis are desymmetrization of bicyclic olefin with Brown's asymmetric hydroboration, Gillman's reaction, TEMPO-BAIB mediated selective oxidation of 1,3-diol, Yamaguchi macro-lactonization and LiOH-mediated partial hydrolysis
描述了通过 (-)-hemibourgeanic 酸和 bourgeanic 内酯的脂肪族 depside (+)-bourgeanic 酸的高度立体选择性全合成。该合成中涉及的关键步骤是双环烯烃的去对称化与布朗的不对称硼氢化反应、吉尔曼反应、TEMPO-BAIB 介导的 1,3-二醇的选择性氧化、山口大环内酯化和 LiOH 介导的异常稳定的八元环部分水解双内酯。