双(二异丙基氨基)(2-氰基乙氧基)膦 、
4-Amino-8-{(2R,4S,5R)-5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-hydroxy-tetrahydro-furan-2-yl}-8H-pteridin-7-one 以75%的产率得到Diisopropyl-phosphoramidous acid (2R,3S,5R)-5-(4-amino-7-oxo-7H-pteridin-8-yl)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester