methyl (1R,12S,13S,15R,20R)-12-ethyl-5-prop-2-enoxy-14-oxa-8,17-diazahexacyclo[10.7.1.01,9.02,7.013,15.017,20]icosa-2(7),3,5,9-tetraene-10-carboxylate 、 10-O-methyl 8-O-(2,2,2-trichloroethyl) (1R,12S,13S,15R,20R)-12-ethyl-5,6-dimethoxy-4-methylsulfonyloxy-17-oxido-14-oxa-8-aza-17-azoniahexacyclo[10.7.1.01,9.02,7.013,15.017,20]icosa-2,4,6,9-tetraene-8,10-dicarboxylate 在
三氟乙酸酐 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以4.2 mg的产率得到10-O-methyl 8-O-(2,2,2-trichloroethyl) (1R,12S,13S,15R,16R,20R)-12-ethyl-16-[(1R,12S,13S,15R,20R)-12-ethyl-10-methoxycarbonyl-5-prop-2-enoxy-14-oxa-8,17-diazahexacyclo[10.7.1.01,9.02,7.013,15.017,20]icosa-2(7),3,5,9-tetraen-4-yl]-5,6-dimethoxy-4-methylsulfonyloxy-14-oxa-8,17-diazahexacyclo[10.7.1.01,9.02,7.013,15.017,20]icosa-2,4,6,9-tetraene-8,10-dicarboxylate