作者:Gangarajula Sudhakar、Kovela Satish、Jakka Raghavaiah
DOI:10.1021/jo301264k
日期:2012.11.16
The first total synthesis of curvularides A–E, isolated from a culture broth of the endophytic fungus Curvularia geniculata, is described. The divergent total synthesis reported herein confirmed the absolute configurations of curvularides A–E and supported that these natural products might be obtained from a common biosynthetic pathway. The key steps involved in the synthesis were the diastereoselective
描述了从内生真菌基因弯曲菌(Curvularia geniculata)的培养液中分离出的弯曲菌素A–E的第一个全合成。本文报道的不同的总合成方法证实了弯孢菌素A–E的绝对构型,并支持这些天然产物可能是通过一条通用的生物合成途径获得的。合成中涉及的关键步骤是外-亚甲基-γ-丁内酯的非对映选择性加氢成α-甲基-γ-丁内酯,Sharpless动力学拆分,Sharpless不对称环氧化以及分子内和分子间环氧化物开口。