p. 986 - 990
(2007/10/02)6-(4-Methoxy-benzyl)-3-methyl-1-trimethylsilanyl-1,6-dihydro-pyrazolo[4,3-d]pyrimidin-7-one
6-(4-Methoxy-benzyl)-3-methyl-1,6-dihydro-pyrazolo[4,3-d]pyrimidin-7-one
Acetic acid (2R,3R,4R,5R)-4-acetoxy-5-acetoxymethyl-2-[6-(4-methoxy-benzyl)-3-methyl-7-oxo-6,7-dihydro-pyrazolo[4,3-d]pyrimidin-1-yl]-tetrahydro-furan-3-yl ester