NC63933
3-Bromo-1-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine
NC63937
3-[[7-(5-Deoxy-β-D-ribofuranosyl)-5-phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl]amino]propanamide
