The invention relates to a new process for the introduction into steroids of a 17-side chains containing a 20-keto group under the simultaneously formation of an unsaturated bond between C,6 and C17 by reaction of 17-(isocyano- sulfonylmethylene)-steroids with an alkylating agent to 20-isocyano-20-sulfonyl-delta16-steroids, followed by hydrolysis of these latter compounds to 20-keto-delta16-steroids. The invention also relates to the intermediate compounds which are formed in this process, i.e. 20-isocyano-20-sulfonyl-delta16-steroids and to the ultimately formed 20- keto-delta16-steroids, as far as these latter compounds are new.
本发明涉及一种在C,6和C17之间同时形成不饱和键的情况下,将含有20-酮基的17-侧链引入类
固醇的新工艺,其方法是将17-(异
氰基-磺酰亚甲基)类
固醇与烷化剂反应生成20-异
氰基-20-磺酰亚甲基-δ16-类
固醇,然后将这些化合物
水解生成20-酮酰亚甲基-δ16-类
固醇。本发明还涉及在此过程中形成的中间化合物,即 20-异
氰基-20-磺酰基-δ16-类
固醇和最终形成的 20-酮基-δ16-类
固醇,只要后一种化合物是新的。