1 4H3 6-{[(1r,3s,4r)-3-hydroxy-4-(hydroxymethyl)cyclopentyl]amino}pyridine-3-carboxamide 1.000 2 EFW 6-{[(1r,3r)-3-hydroxycyclopentyl]amino}pyridine-3-carboxamide 0.889 3 4GO 6-(cyclopentylamino)pyridine-3-carboxamide 0.833 4 4GT 4-amino-2-(cyclopentylamino)pyrimidine-5-carboxamide 0.700 5 GJG 6-(cyclohexylamino)pyridine-3-carboxamide 0.700