(2S,3S,4S,5R,6S)-6-{4-[(1S,3S,7S,10R,11S,16R)-10-allyl-7-hydroxy-8,8,12,16-tetramethyl-3-(2-methyl-benzothiazol-5-yl)-5,9-dioxo-4,17-dioxabicyclo[14.1.0]heptadec-11-yloxycarbonyloxymethyl]-2-nitro-phenoxy}-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid allyl ester 在
四(三苯基膦)钯 苯硅烷 作用下,
以
二氯甲烷 为溶剂,
反应 19.0h,
以49%的产率得到(2S,3S,4S,5R,6S)-6-{4-[(1S,3S,7S,10R,11S,12S,16R)-10-allyl-7-hydroxy-8,8,12,16-tetramethyl-3-(2-methyl-benzothiazol-5-yl)-5,9-dioxo-4,17-dioxa-bicyclo[14.1.0]heptadec-11-yloxycarbonyloxymethyl]-2-nitro-phenoxy}-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid