(1R,3S)-6-benzyloxymethyl-1-[(2R,3R,5R)-5-[(S)-1,2-bis-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3-(tert-butyl-dimethyl-silanyloxy)-5-methyl-tetrahydro-furan-2-yl]-3-methyl-hept-6-ene-1,3-diol 在
臭氧 、
二甲基硫 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以91%的产率得到(1S,3R,5S)-1-benzyloxymethyl-3-[(2R,3R,5R)-5-[(S)-1,2-bis-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3-(tert-butyl-dimethyl-silanyloxy)-5-methyl-tetrahydro-furan-2-yl]-5-methyl-2,8-dioxa-bicyclo[3.2.1]octane