(2R)-2,3-dihydroxy-3-methylbutan-1-yl p-toluenesulfonate 、
(6RS)-<6-methoxy-23,24-bisnor-9,10-seco-3,5-cyclochola-7,10(19)-dien-22-yl> phenyl sulfone 在
苯基锂 作用下,
以
四氢呋喃 、
乙醚 为溶剂,
生成 (6R,22S,24R)-<24,25-dihydroxy-6-methoxy-9,10-seco-3,5-cyclocholesta-7,10(19)-dien-22-yl> phenyl sulfone 、 (6R,22R,24R)-<24,25-dihydroxy-6-methoxy-9,10-seco-3,5-cyclocholesta-7,10(19)-dien-22-yl> phenyl sulfone 、 (6S,22S,24R)-<24,25-dihydroxy-6-methoxy-9,10-seco-3,5-cyclocholesta-7,10(19)-dien-22-yl> phenyl sulfone 、 (6S,22R,24R)-<24,25-dihydroxy-6-methoxy-9,10-seco-3,5-cyclocholesta-7,10(19)-dien-22-yl> phenyl sulfone