Applicants have discovered a method for the stereoselective and regioselective synthesis of 3α-hydroxy, 3β-methyl-5α-pregnan-20-one (ganaxolone) comprising reacting 5α-pregnane-3,20-dione; with an organometallic methylating agent in an inert solvent to provide a compound of the formula
申请人发现了一种立体选择性和区域选择性合成3α-羟基、3β-甲基-5α-
孕酮-20-酮(甘氧隆)的方法,包括将5α-孕烷-3,20-二酮与有机
金属甲基化试剂在惰性溶剂中反应,以提供化合物的公式。