2 and 17,17-ethylenedioxy-1,3,5(10)-estratrien-3β-ol 3 were converted into ethyl ester 1a, 2a and 3a by reaction with ethyl chloroacetate in the presence of potassium. The ethyl esters 1a, 2a and 3a on reaction with hydrazine gave hydrazides 1b, 2b and 3b, which on reaction with cyanogen bromide afforded 1,3,4-oxadiazoles 1c, 2c and 3c.
胆甾-5-烯-3β醇1,3,3-亚乙二氧基雄甾-4-烯17β醇2和17,17-亚乙二氧基-1,3,5(10) -雌
三烯3β醇3被转换成
乙酯1A,2A和3A通过与
钾的存在下
氯乙酸乙酯反应。与
肼反应的
乙酯1a,2a和3a得到酰
肼1b,2b和3b,其与
溴化氰反应得到1,3,4-恶二唑1c,2c和3c。