Novel Synthesis of 4- or 6-Substituted Indirubin Derivatives
作者:Aiying Zhang、Mingfeng Yu、Tian Lan、Zenglu Liu、Zhenmin Mao
DOI:10.1080/00397910903318591
日期:2010.9.30
A simple and convenient route for synthesis of a series of 4- or 6-substituted indirubin derivatives by oxidation and subsequent condensation of indoxyl and isatin is described. Acidic reaction conditions are crucial to the condensation of 4-substitutedderivatives, whereas for the condensation of 6-substituted derivatives, both acidic and basic conditions work well.