C25- and C26 -steroid carboxylic acids as well as their methyl esters with different rings A and B were synthesized with good to excellent yields from C22 -iodides 1 using the nickelacycles 2a and 2b as propionic and butyric acid equivalents.
使用环
镍 2a 和 2b 作为
丙酸和
丁酸等价物,从 C22
碘化物 1 合成 C25 和 C26 类
固醇羧酸及其具有不同环 A 和 B 的甲酯,产率从良好到优异。