(1R,3S,4R,5R)-4-[(Z)-6-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)hex-2-enyl]-5-[(phenylsulfonyl)methyl]cyclopentan-1,3-diol 、 (1S,2R,3R,4R)-2-[(Z)-6-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)hex-2-enyl]-3-[(phenylsulfonyl)methyl]-4-(triethylsilyloxy)cyclopentanol 、 (1R,2R,3R,4S)-3-[(Z)-6-(4-methyl-2,6,7-trioxabicyclo[2.2.2]octan-1-yl)hex-2-enyl]-2-[(phenylsulfonyl)methyl]-4-(triethylsilyloxy)cyclopentanol 、
三乙基氯硅烷 在
咪唑 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以66.5%的产率得到1-<(Z)-6-{(1R,2R,3R,5S)-2-[(phenylsulfonyl)methyl]-3,5-bis(triethylsiloxy)cyclopentyl}hex-4-enyl>-4-methyl-2,6,7-trioxabicyclo[2.2.2]octane