4-[(R)-3-(3-{(R)-1-[6-(2,2-diphenyl-ethylamino)-9-((2R,3R,4S,5S)-5-ethylcarbamoyl-3,4-dihydroxy-tetrahydro-furan-2-yl)-9H-purin-2-yl]-pyrrolidin-3-yl}-ureido)-pyrrolidine-1-carbonyl]-benzoic acid methyl ester trifluoroacetate 、
氢氧化钾 在
crude product 、
乙腈 、
水 作用下,
以
甲醇 、
水 为溶剂,
反应 2.0h,
以water (0.1% TFA) (gradient of 0-100% acetonitrile) affords the title compound的产率得到4-[(R)-3-(3-{(R)-1-[6-(2,2-diphenyl-ethylamino)-9-((2R,3R,4S,5S)-5-ethylcarbamoyl-3,4-dihydroxy-tetrahydro-furan-2-yl)-9H-purin-2-yl]-pyrrolidin-3-yl}-ureido)-pyrrolidine-1-carbonyl]-benzoic acid trifluoroacetate