Methanesulfonic acid (2R,3R,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-[2-(dimethylamino-methyleneamino)-6-oxo-1,6-dihydro-purin-9-yl]-tetrahydro-furan-3-yl ester 在
叠氮化锂 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
以75%的产率得到N'-(9-{(2R,4S,5S)-4-Azido-5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-tetrahydro-furan-2-yl}-6-oxo-6,9-dihydro-1H-purin-2-yl)-N,N-dimethyl-formamidine