1 4CT (3r,4s)-1-[(4-amino-5h-pyrrolo[3,2-D]pyrimidin-7-yl)methyl]-4-{[(4-chlorophenyl)sulfanyl]methyl}pyrrolidin-3-ol 1.000 2 4F0 (3s,4r)-1-[(4-amino-5h-pyrrolo[3,2-D]pyrimidin-7-yl)methyl]-4-[(methylsulfanyl)methyl]pyrrolidin-3-ol 0.704 3 TDI (3r,4s)-1-[(4-amino-5h-pyrrolo[3,2-D]pyrimidin-7-yl)methyl]-4-[(methylsulfanyl)methyl]pyrrolidin-3-ol 0.704 4 4EH (3r,4s)-1-[(4-amino-5h-pyrrolo[3,2-D]pyrimidin-7-yl)methyl]-4-[(pyrazin-2-ylsulfanyl)methyl]pyrrolidin-3-ol 0.700