作者:Nathan R Guz、Peter Lorenz、Frank R Stermitz
DOI:10.1016/s0040-4039(01)01355-7
日期:2001.9
(+)-epoxysuberosin, and two new coumarins (+)-trachypleuranin-A and (±)-trachypleuranin-B, were isolated from the methanol extract of Harbouria trachypleura. An efficient five-step asymmetric synthesis of (+)-trachypleuranin-A was performed using a sequential [3,3] Claisen–Cope rearrangement and a Shi asymmetric epoxidation. (±)-Trachypleuranin-B, a chlorinated coumarin, was synthesized from (±)-epoxysuberosin
分离出两种已知的呋喃香豆素,(+)-氧哌丁宁和(+)-萨克萨林,两种已知的香豆素,伞形酮和(+)-环氧亚油精,以及两种新的香豆素,(+)-trachypleuranin-A和(±)-trachypleuranin-B。从夏威夷夏威夷藻的甲醇提取物中提取。使用顺序的[3,3] Claisen-Cope重排和Shi不对称环氧化,进行了有效的五步(+)-trachypleuranin-A不对称合成。(±)-Trachypleuranin-B,一种氯代香豆素,是由(±)-环氧亚油精合成的。