A microwave promoted and Lewis acid catalysed solventless approach to 4-azasteroids.
نویسندگان
چکیده
The preparation of 3-oxo-4-azasteroid from A-nor-3,5-secosteroid-3-oic acid is described in a solventless condition catalysed by Lewis acid under microwave irradiation. We utilized urea as an environmentally benign source for the generation of ammonia for the aza cyclization reaction.
منابع مشابه
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ورودعنوان ژورنال:
- Steroids
دوره 73 6 شماره
صفحات -
تاریخ انتشار 2008