The easily obtainable α-azidosteroidketones with an equatorial azidegroup can be transformed with triphenylphosphine and several acylhalides to oxazolosteroides in a well understandable way. 2α-Azidocholestanone-3 and acetylbromide respectively benzoylchloride lead to the [2,3-d]oxazolosteroides 1a and 1b. By treating 3β-acetoxy-7β-azidocholestanone-6 with acylhalides acetylbromide, benzoylchloride
带有赤道
叠氮基团的易获得的α-
叠氮类
固醇酮可以用三苯膦和几种酰基卤以易于理解的方式转化为
恶唑类
固醇。2α-Azidocholestanone-3和
乙酰溴分别形成
苯甲酰氯,生成[2,3-d] oxazolosteroides 1a和1b。通过用酰基
溴,
乙酰溴,
苯甲酰氯,
苯乙酰氯和氧羰基酰
氯处理3β-乙酰氧基-7β-azidocholestanone-6,形成相应的[7,6-d]
恶唑类
固醇2a–2d。