Abstract: Crystalline ezatiostat hydrochloride ansolvate form D is more stable and/or more soluble that various solvated crystalline polymorphic forms of ezatiostat hydrochloride.

Abstract: Sulfonylethyl and thioethyl phosphorodiamidates, their preparation and intermediates in their preparation, formulations containing them, and their pharmaceutical use. The compounds are useful for treating cancer, alone and in combination with other anticancer therapies.

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: Tripeptide and tetrapeptide thioethers, pharmaceutical compositions containing them, their pharmaceutical use, and their preparation. The compounds are useful in potentiating the cytotoxic effects of chemotherapeutic agents in tumor cells, selectively exerting toxicity in tumor cells, elevating the production of GM progenitors in bone marrow, stimulating the differentiation of bone marrow, mitigating the myelosuppressive effects of chemotherapeutic agents, and modulating hematopoiesis in bone marrow.

Abstract: Tripeptide and tetrapeptide sulfones, pharmaceutical compositions containing them, their pharmaceutical use, and their preparation. The compounds are useful in potentiating the cytotoxic effects of chemotherapeutic agents in tumor cells, selectively exerting toxicity in tumor cells, elevating the production of GM progenitors in bone marrow cells, stimulating the differentiation of bone marrow, mitigating the myelosuppressive effects of chemotherapeutic agents, and modulating hematopoiesis in bone marrow.

Abstract: A process for and intermediates in the preparation of canfosfamide and its salts. Some of the intermediates have anticancer activity.

Abstract: Sulfonylethyl and thioethyl phosphorodiamidates, their preparation and intermediates in their preparation, formulations containing them, and their pharmaceutical use. The compounds are useful for treating cancer, alone and in combination with other anticancer therapies.

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.