Synthesis of the 2,3,4-trisubstituted indole fragments of nosiheptide and glycothiohexide
作者:David J. Bentley、John Fairhurst、Peter T. Gallagher、Astrid K. Manteuffel、Christopher J. Moody、Joanne L. Pinder
DOI:10.1039/b312964k
日期:——
the protected 4-hydroxymethyl-3-methylindole-2-carboxylate fragment 17 of the thiopeptide antibiotic nosiheptide are described starting from methyl 4-methylindole-2-carboxylate 11, itself prepared in two steps, or from 3-amino-4-chlorobenzoic acid 26. The first route can be adapted to the synthesis of a fragment of the related antibiotic glycothiohexide-alpha, the 3,4-bis(hydroxymethyl)indole-2-carboxylate
从4-甲基吲哚-2-羧酸甲酯11本身,分两步制备或从3-氨基-4开始,描述了到硫肽抗生素诺西肽的被保护的4-羟基甲基-3-甲基吲哚-2-羧酸酯片段17的两种途径。 -氯苯甲酸26.第一条途径可适合于合成相关抗生素糖硫己酸-α的片段,即3,4-双(羟甲基)吲哚-2-羧酸,其中两个羟甲基的区别在于吲哚。 19或内酯20。