Model Studies Towards Stephaoxocanes: Construction of the 2-Oxa-4-aza- phenalene Core of Stephaoxocanidine and Eletefine
作者:Darío A. Bianchi、Marcos A. Cipulli、Teodoro S. Kaufman
DOI:10.1002/ejoc.200300548
日期:2003.12
The construction of the polysubstituted 1H,3H-2-oxa-4-azaphenalene 4 by means of consecutive oxa-Pictet−Spengler and Jackson cyclizations is reported. This compound contains the ABC ring system of the novel isoquinoline alkaloids stephaoxocanidine and eletefine, found in Stephania cepharantha and Cissampelos glaberrima. Both these species are Menispermaceae used in folk medicine in the Far East and
报道了通过连续的 oxa-Pictet-Spengler 和 Jackson 环化来构建多取代的 1H,3H-2-oxa-4-azaphenalene 4。该化合物包含在 Stephania cepharantha 和 Cissampelos glaberrima 中发现的新型异喹啉生物碱 stephaoxocanidine 和 eletefine 的 ABC 环系统。这两个物种都是用于远东和巴西民间医学的防霉科。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003