2,2-Dimethyl-propionic acid (2R,3R,4R,5R)-5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-2-(2-{[bis-(4-methoxy-phenyl)-phenyl-methyl]-amino}-6-oxo-1,6-dihydro-purin-9-yl)-4-methanesulfonyloxy-tetrahydro-furan-3-yl ester 在
氢氧化钾 、 sodium tetrahydroborate 作用下,
以
甲醇 、
苯 为溶剂,
反应 28.0h,
以72%的产率得到9-{(2R,3S,5S)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3-hydroxy-tetrahydro-furan-2-yl}-2-{[bis-(4-methoxy-phenyl)-phenyl-methyl]-amino}-1,9-dihydro-purin-6-one