Abstract: Compounds of the following formula are provided: In the Formula (I), R1 is —X—R1?; in which R1? is optionally substituted lower alkyl, optionally substituted aryl, optionally substituted heteroaryl, or optionally substituted heterocyclyl, and X is —NH—. R2 is lower alkyl optionally substituted with one, two or three groups chosen from hydroxy, lower alkoxy, and halogen. And R3 is —NR4R5; in which R4 is hydrogen and R5 is lower alkyl substituted with amino; or (ii) R4 and R5 are both lower alkyl optionally substituted with one, two or three groups chosen from hydroxy and amino. It is to be understood that R1? is not cyclohexylmethyl, phenyl, substituted phenyl, benzyl, phenylethyl, or m-hydroxybenzyl. The compounds inhibit CDK-2 activity and are useful for treating disorders characterized by undesirable cell proliferation.

Abstract: A compound having the formula: wherein: R1 is —X—R1′; in which R1′ is lower alkyl, substituted lower alkyl, aryl, substituted aryl, heteroaryl, or substituted heteroaryl, or heterocyclic, and X is —NH—; R2 is isopropyl; and R3 is —NR4R5; in which R4 is hydrogen and R5 is lower alkyl substituted with amino or R4 and R5 are both lower alkyl substituted with one, two or three groups chosen from hydroxy and amino, or an acid addition salt or cationic salt thereof. The compounds inhibit CDK-2 activity and are useful for treating disorders characterized by undesirable cell proliferation.

Abstract: Compounds of the following formula are provided: wherein: R1 is —X—R1′; in which R1′ is alkyl, cycloalkyl, aryl, aralkyl, hetaryl, or heterocyclyl, all of which are optionally substituted; X is —NH; R2 is optionally substituted lower alkyl; and R3 is —NR4R5; in which R4 and R5 independently are hydrogen or lower alkyl optionally substituted by hydroxy or amino; or acid addition salts or cationic salts thereof. The compounds inhibit CDK-2 activity and are useful for treating disorders characterized by undesirable cell proliferation.

Abstract: A 2,6,9-trisubstituted purine composition that is useful for inhibiting cell proliferative disorders and as an antifungal agent.

Abstract: A 2,6,9-trisubstituted purine composition that is useful for inhibiting cell proliferative disorders and as an antifungal agent.