Proton Acid-Catalysed Transformations of Estrogen Derivatives: New Results and Some Mechanistic Aspects of theKober Colour Reaction
作者:Ulf Pindur、Thomas Schall
DOI:10.1002/ardp.19943271007
日期:——
3‐O‐methylated estrogen derivatives 1a‐d and α‐estradiol (1e) underwent sulfuric acid‐catalysed transformations to furnish the steroids 2–6. The processes involved in the reaction sequence are regioselective sulfonation and, above all, the Wagner‐Meerwein rearrangement of the methyl group at C‐13. With the objective of obtaining further information on the course of the Kober colour reaction of estrogens, some
3-O-甲基化雌激素衍生物 1a-d 和 α-雌二醇 (1e) 经历硫酸催化转化以提供类固醇 2-6。反应序列中涉及的过程是区域选择性磺化,最重要的是 C-13 处甲基的 Wagner-Meerwein 重排。为了获得有关雌激素科伯颜色反应过程的更多信息,还进行了一些 UV/VIS 和 ESR 光谱研究。