Asymmetric total synthesis of epolactaene. Part 2: Introduction of the side chain and synthesis of (+)-epolactaene and its enantiomer
作者:Shinji Marumoto、Hiroshi Kogen、Shunji Naruto
DOI:10.1016/s0040-4020(99)00368-3
日期:1999.6
A total synthesis of the novel neuritogenic agent (+)-epolactaene ((+)-1) has been achieved via a convergent route that utilized epoxyamide 8, C7–C11 fragment 7, and C1–C6 Wittig reagent derived from phosphonium salt 19 followed by cyclization to form the lactam. The absolute configuration of natural epolactaene is definitively established as (13R, 14R). Synthesis of (−)-1, the enantiomer of this natural
新颖neuritogenic剂的全合成(+) - epolactaene((+) - 1)已经实现通过会聚路由利用epoxyamide 8,C7-C11片段7,和C1-C6 Wittig试剂从鏻盐衍生的19,接着通过环化形成内酰胺。天然大环烯的绝对构型确定为(13 R,14 R)。还描述了该天然外二烯的对映体(-)- 1的合成。