By treating a Δ23-24, 24-diphenyl-cholene with 2 moles of N-bromo-succinimide in allylbromide the corresponding Δ20,22;23-21-bromo-24, 24-diphenyl-choladiene is obtained directly in a 70% yield. Thus three of the usual reactions in the side chain degradation of bile acids to adrenal cortical hormones are concentrated into one, experimentally very simple step. Some conversions connected with this reaction
通过处理一个Δ 23在-24,24二苯基cholene与2个摩尔的N-
溴-琥珀
酰亚胺的烯丙基
溴的相应Δ 20,22; 23 -21
溴24,24二苯基choladiene以70直接获得% 屈服。因此,
胆汁酸侧链降解为
肾上腺皮质激素的三种常见反应被浓缩为一个实验上非常简单的步骤。描述了与此反应有关的一些转化。