(7S,9S)-7,8,9,10-tetrahydro-6,7,9,11-tetrahydroxy-9-<1-(R)-<(phenylcarbamoyl)oxy>ethyl>-5,12-naphthacenedione 在
sodium hydroxide 、
silver trifluoromethanesulfonate 作用下,
以
四氢呋喃 、
甲醇 、
乙醚 、
二氯甲烷 为溶剂,
反应 2.0h,
生成 Phenyl-carbamic acid (R)-1-{(2S,4S)-2,5,12-trihydroxy-4-[(2R,4S,5R,6S)-5-hydroxy-6-methyl-4-(2,2,2-trifluoro-acetylamino)-tetrahydro-pyran-2-yloxy]-6,11-dioxo-1,2,3,4,6,11-hexahydro-naphthacen-2-yl}-ethyl ester