p. 1859 - 1862
(2007/10/02)3'-O-levulinoylthymidine
Dimethyl-phosphoramidous acid (2R,3S,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-tetrahydro-furan-3-yl ester methyl ester
N-((S)-9-{(4S,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-hydroxy-tetrahydro-furan-2-yl}-6-oxo-6,9-dihydro-1H-purin-2-yl)-isobutyramide