1H-Pyrazolo[3,4-d]pyrimidin-4-amine, 1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-[(3-ethynylphenyl)ethynyl]-

1H-Pyrazolo[3,4-d]pyrimidin-4-amine, 1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-[(4-methylphenyl)ethynyl]-

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(2-phenylethynyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1H-Pyrazolo[3,4-d]pyrimidin-4-amine, 3-(cyclohexylethynyl)-1-(2-deoxy-β-D-erythro-pentofuranosyl)-

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(1-heptyn-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(1-pentyn-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(1-propyn-1-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

2-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-3-iodo-4-methoxy-2H-pyrazolo[3,4-d]pyrimidine

Methyl (2E)-3-[4-amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propenoate

3-Bromo-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-3-iodo-4-methoxy-1H-pyrazolo[3,4-d]pyrimidine

1-β-D-Arabinofuranosyl-4-(3,3-dimethyl-1-triazen-1-yl)-2(1H)-pyrimidinone

2,4(1H,3H)-Pyrimidinedione, 1-[(11R)-2,6-dideoxy-7-O-(methoxymethyl)-3,4:9,10-bis-O-(1-methylethylidene)-2-[[(2-nitrophenyl)sulfonyl]amino]-L-allo-D-galacto-undecodialdo-11,8-furanosyl]-3-[(phenylmethoxy)methyl]-

1-[6-Deoxy-6-[(3aR,5R,6R,7R,7aR)-hexahydro-6,7-dihydroxy-2-oxo-5H-pyrano[3,2-d]oxazol-5-yl]-5-O-(methoxymethyl)-2,3-O-(1-methylethylidene)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione