Synthesis of 24-epicathasterone and related brassinosteroids with modified side chain
作者:Brunhilde Voigt、Andrea Porzel、Clemens Bruhn、Christoph Wagner、Kurt Merzweiler、Günter Adam
DOI:10.1016/s0040-4020(97)10146-6
日期:1997.12
The synthesis of 24-epicathasterone (20), 22-deoxy-24-epiteasterone (22) and 24-hydroxy-6-oxo-24-epicampestanol (24) via 22,23-epoxy- and 22,23-bromohydrin intermediates starting with ergosterol is reported. The structures of the new brassinosteroids were determined especially by X-ray analysis of intennediate bromohydrins.
通过22,23-环氧-和22,23-溴代醇中间体开始合成24-表麻黄酮(20),22-脱氧-24-表黄酮(22)和24-羟基-6-氧代-24-表氨甾烷醇(24)据报道含麦角固醇。新的油菜素类固醇的结构特别是通过强效溴代醇的X射线分析确定的。