(-)-(S)-acetic acid [(1R,2R,4R,5S)-2-(tert-butyldimethylsilyloxymethyl)-5-(tert-butyldiphenylsilyloxy)-3,3-dimethyl-7-oxabicyclo[2.2.1]heptan-1-yl][2-(tert-butyldimethylsilyloxymethyl)cyclohex-1-enyl]methyl ester 在
camphor-10-sulfonic acid 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以76%的产率得到(-)-(S)-acetic acid [(1R,2R,4R,5S)-5-(tert-butyldiphenylsilyloxy)-2-hydroxymethyl-3,3-dimethyl-7-oxabicyclo[2.2.1]heptan-1-yl](2-hydroxymethylcyclohex-1-enyl)methyl ester