(2S)-2,2-cyclopropyl-t-butyldiphenylsilyloxyetanal 、 (5Z,7E)-(1S,3R)-1,3-bis(t-butyldimethylsilyloxy)-22-sulfonylphenyl-23,24-dinor-9,10-secochola-5,7,0(19)-triene 在
正丁基锂 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
生成 (5Z,7E)-(1S,3R,24S)-1,3-bis(t-butyldimethylsilyloxy)-(22S,23S)-22-sulfonylphenyl-23-hydroxy-24-cyclopropyl-24-t-butyldiphenylsilyloxy-9,10-secochola-5,7,10(19)-triene 、 (5Z,7E)-(1S,3R,24S)-1,3-bis(t-butyldimethylsilyloxy)-(22R,23S)-22-sulfonylphenyl-23-hydroxy-24-cyclopropyl-24-t-butyldiphenylsilyloxy-9,10-secochola-5,7,10(19)-triene 、 (5Z,7E)-(1S,3R,24S)-1,3-bis(t-butyldimethylsilyloxy)-(22S,23R)-22-sulfonylphenyl-23-hydroxy-24-cyclopropyl-24-t-butyldiphenylsilyloxy-9,10-secochola-5,7,10(19)-triene 、 (5Z,7E)-(1S,3R,24S)-1,3-bis(t-butyldimethylsilyloxy)-(22R,23R)-22-sulfonylphenyl-23-hydroxy-24-cyclopropyl-24-t-butyldiphenylsilyloxy-9,10-secochola-5,7,10(19)-triene