2-溴-3-氧代丙酸乙酯 以
1,4-二氧六环 、
水 为溶剂,
生成 3-{(2R,3R,4R,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3-(tert-butyl-dimethyl-silanyloxy)-4-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-tetrahydro-furan-2-yl}-3H-imidazo[2,1-i]purine-7-carboxylic acid ethyl ester