N-butyroxysuccinimide 、 6-(dimethylamino)-9-<3'-<
amino>-3'-deoxy-β-D-ribofuranosyl>purine 以
1,4-二氧六环 为溶剂,
反应 72.0h,
以64%的产率得到{(S)-2-(4-Butyrylamino-phenyl)-1-[(2S,3S,4R,5R)-5-(6-dimethylamino-purin-9-yl)-4-hydroxy-2-hydroxymethyl-tetrahydro-furan-3-ylcarbamoyl]-ethyl}-carbamic acid tert-butyl ester