(22S)-1α,3β-diacetoxy-25-tetrahydropyranyloxy-cholest-5-en-23-yn-22-ol 、
4-溴苯甲酰氯 生成 [(Z,2S,3S)-2-[(1S,3R,8S,9S,10R,13S,14S,17R)-1,3-diacetyloxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-6-hydroxy-6-methylhept-4-en-3-yl] 4-bromobenzoate