17-haloethynyl steroids of the partial formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is alkyl of 1-4 carbon atoms, acyl of 1-7 carbon atoms, trimethylsilyl, 2-tetrahydropyranyl, or nitrate, X is bromine or iodine, and V is methylene, ethylene, vinylene, ethylidene, vinylidene or cyclopropylene, can be prepared by treating an ethynyl steroid of the partial formula ##STR2## wherein R.sub.1, R.sub.2, and V are as defined above, in an inert solvent with a brominating agent or an iodinating agent in the presence of a silver salt. Certain new compounds are also provided.
部分结构式为##STR1##的17-卤
乙炔基类
固醇,其中R.sub.1为氢或甲基,R.sub.2为1-4个碳原子的烷基,1-7个碳原子的酰基,三甲基
硅基,2-
四氢吡喃基或
硝酸酯基,X为
溴或
碘,V为亚甲基,
乙烯基,
乙烯基,乙基亚甲基,
乙烯亚甲基或环丙基,可以通过在惰性溶剂中用
溴化剂或
碘化剂处理部分结构式为##STR2##的
乙炔基类
固醇来制备,其中R.sub.1,R.sub.2和V如上定义,在存在
银盐的情况下。还提供了某些新化合物。