3β-acetoxy-17β-pivaloylandrost-5-ene-19-ol 、
N-(2-methoxyethoxymethyl)ethanamine;hydrochloride 以
二乙二醇二甲醚 为溶剂,
反应 2.5h,
以100%的产率得到2,2-Dimethyl-propionic acid (3S,8R,9S,10S,13S,14S,17S)-3-acetoxy-10-(2-methoxy-ethoxymethoxymethyl)-13-methyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester