The invention is fused heterocyclic compounds of formula (I), and salts thereof, compositions thereof, and methods of use therefor. In particular, disclosed herein are certain fused heterocyclic compounds that can be useful for inhibiting protein kinase, including Bruton's tyrosine kinase (Btk), and for treating disorders mediated thereby.

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The invention is fused heterocyclic compounds of formula (I), and salts thereof, compositions thereof, and methods of use therefor. In particular, disclosed herein are certain fused heterocyclic compounds that can be useful for inhibiting protein kinase, including Bruton's tyrosine kinase (Btk), and for treating disorders mediated thereby.

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Aspects of the disclosure relate to methods for treating disorders using agents for promoting hypoglossal motoneuron excitability. In some instances the disorders include obstructive sleep apnea (OSA), cataplexy, attention deficit/hyperactivity disorder (ADHD), attention deficit disorder (ADD) or depression. Related products are also included within the invention.

Aspects of the disclosure relate to methods for treating disorders using agents for promoting hypoglossal motoneuron excitability. In some instances the disorders include obstructive sleep apnea (OSA), cataplexy, attention deficit/hyperactivity disorder (ADHD), attention deficit disorder (ADD) or depression. Related products are also included within the invention.

This invention is in the area of improved compounds, compositions and methods of transiently protecting healthy cells, and in particular hematopoietic stem and progenitor cells (HSPC) as well as renal cells, from damage associated with DNA damaging chemotherapeutic agents. In one aspect, improved protection of healthy cells is disclosed using disclosed compounds that act as highly selective and short, transiently-acting cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors when administered to subjects undergoing DNA damaging chemotherapeutic regimens for the treatment of proliferative disorders.

This invention is in the area of improved compounds, compositions and methods of transiently protecting healthy cells, and in particular hematopoietic stem and progenitor cells (HSPC) as well as renal cells, from damage associated with DNA damaging chemotherapeutic agents. In one aspect, improved protection of healthy cells is disclosed using disclosed compounds that act as highly selective and short, transiently-acting cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors when administered to subjects undergoing DNA damaging chemotherapeutic regimens for the treatment of proliferative disorders.

Compounds of formulae I, II or III, and pharmaceutically acceptable salts thereof, are useful as CDK inhibitors.

Compounds of formulae I, II or III, and pharmaceutically acceptable salts thereof, are useful as CDK inhibitors.

Compounds of formulae I, II or III, and pharmaceutically acceptable salts thereof, are useful as CDK inhibitors.

The present disclosure relates to compounds and compositions displaying antibacterial activity, particularly against Gram-positive bacteria. The compounds comprise a class of pyrazinoquinazolinone derivatives, including neofiscalin A and fiscalin C, or pharmaceutically acceptable salts, esters, solvates or prodrugs thereof. The present disclosure further relates to methods for treating a patient with a bacterial infection with the disclosed compounds and compositions.