Abstract
In the title compound, 4-amino-2-(2-O-methyl-beta-D-ribofuranosyl)-2H-pyrazolo[3,4-d]pyrimidine monohydrate, C11H15N5O4.H2O, the conformation of the N-glycosylic bond is syn [chi = 20.1 (2) degrees ]. The ribofuranose moiety shows a C3'-endo (3T2) sugar puckering (N-type sugar), and the conformation at the exocyclic C4'-C5' bond is -ap (trans). The nucleobases are stacked head-to-head. The three-dimensional packing of the crystal structure is stabilized by hydrogen bonds between the 2'-O-methylribonucleosides and the solvent molecules.
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