Oxidation of unsaturated steroid ketones with hydrogen peroxide catalyzed by Fe(bpmen)(OTf)2. New methodology to access biologically active steroids by chemo-, and stereoselective processes
作者:David Clemente-Tejeda、Alejandro López-Moreno、Francisco A. Bermejo
DOI:10.1016/j.tet.2012.08.079
日期:2012.11
In this paper we describe a new environmentally friendly method to promote the oxidation of steroids. The chemo- and stereoselective aspects of the oxidation of conjugated enones, dienones, further unsaturated enones, estrone, and cholestane acetates were under study. The great facial stereoselectivity of the method has been shown on substrates 12, 14, and 18 improving some of the updated reported