A nitrogenous heterocyclic compound, a preparation method, an intermediate, a composition, and an application. The present invention provides a nitrogenous heterocyclic compound as represented by formula I, pharmaceutically acceptable salts thereof, enantiomers thereof, diastereoisomers thereof, tautomers thereof, solvates thereof, metabolites thereof, or prodrugs thereof. The compound has high inhibitory activity against ErbB2 tyrosine kinase, has good inhibitory activity against human breast cancer cells BT-474, human gastric cancer cells NCI-N87 and the like with high expression of ErbB2, and in addition has relatively weak inhibitory activity against EGFR kinase, that is, the compound is an EGFR/ErbB2 double target inhibitor that attenuates EGFR kinase inhibitory activity or a small-molecule inhibitor having selectivity for an ErbB2 target. ##STR00001##

A nitrogenous heterocyclic compound, a preparation method, an intermediate, a composition, and an application. The present invention provides a nitrogenous heterocyclic compound as represented by formula I, pharmaceutically acceptable salts thereof, enantiomers thereof, diastereoisomers thereof, tautomers thereof, solvates thereof, metabolites thereof, or prodrugs thereof. The compound has high inhibitory activity against ErbB2 tyrosine kinase, has good inhibitory activity against human breast cancer cells BT-474, human gastric cancer cells NCI-N87 and the like with high expression of ErbB2, and in addition has relatively weak inhibitory activity against EGFR kinase, that is, the compound is an EGFR/ErbB2 double target inhibitor that attenuates EGFR kinase inhibitory activity or a small-molecule inhibitor having selectivity for an ErbB2 target. ##STR00001##

The present invention relates to compounds, which are suitable for use in electronic devices, and to electronic devices, in particular organic electroluminescent devices, containing said compounds.

Provided herein are new crystalline form(s) of succinate salt(s) of 7-Cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (also known as ribociclib), pharmaceutical compositions comprising the same, methods of treatment using the same and methods of making the same.

Provided herein are new crystalline form(s) of succinate salt(s) of 7-Cyclopentyl-2-(5-piperazin-1-yl-pyridin-2-ylamino)-7H-pyrrolo[2,3-d]pyrimidine-6-carboxylic acid dimethylamide (also known as ribociclib), pharmaceutical compositions comprising the same, methods of treatment using the same and methods of making the same.

This invention is in the field of medicinal chemistry. In particular, the invention relates to anew class of small-molecules having a tetrahydroindazole structure which function as modulators (e.g., activators or inhibitors) of sigma-1 and/or sigma-2 receptors, and their use as therapeutics for the treatment of cancer and other diseases (e.g., neurological conditions) characterized with sigma-1 and/or sigma-2 receptor activity.

This invention is in the field of medicinal chemistry. In particular, the invention relates to anew class of small-molecules having a tetrahydroindazole structure which function as modulators (e.g., activators or inhibitors) of sigma-1 and/or sigma-2 receptors, and their use as therapeutics for the treatment of cancer and other diseases (e.g., neurological conditions) characterized with sigma-1 and/or sigma-2 receptor activity.

Compounds described herein may be used for the treatment of neurodegenerative diseases linked to protein misfolding, including prion diseases, Alzheimer's disease, Parkinson's disease (PD) and amyotrophic lateral sclerosis (ALS), and also other neurodegenerative, degenerative, metabolic and ischemic conditions. Indeed, NAD metabolism impairment is also a critical feature in brain ischemia/reperfusion injury, Wallerian degeneration, kidney failure, multiple sclerosis, aging, and metabolic disorders such as diabetes mellitus. Therapies that elevate or stabilize NAD levels may thus have broad potential for treating many severely debilitating neurological and metabolic conditions. Evidence is provided herein with compounds from 8 lead series for NAD restoring properties and for therapeutic efficacy in cellular and/or animal models of prion disease, PD and ALS.

Compounds described herein may be used for the treatment of neurodegenerative diseases linked to protein misfolding, including prion diseases, Alzheimer's disease, Parkinson's disease (PD) and amyotrophic lateral sclerosis (ALS), and also other neurodegenerative, degenerative, metabolic and ischemic conditions. Indeed, NAD metabolism impairment is also a critical feature in brain ischemia/reperfusion injury, Wallerian degeneration, kidney failure, multiple sclerosis, aging, and metabolic disorders such as diabetes mellitus. Therapies that elevate or stabilize NAD levels may thus have broad potential for treating many severely debilitating neurological and metabolic conditions. Evidence is provided herein with compounds from 8 lead series for NAD restoring properties and for therapeutic efficacy in cellular and/or animal models of prion disease, PD and ALS.

The present invention relates to heteroaromatic derivatives for use as a regulator, a preparation method therefor and a use thereof. In particular, disclosed are compounds represented by general formula (I), preparation methods therefor, pharmaceutical compositions comprising said compounds, and a use thereof as Janus kinase inhibitors in treating inflammatory diseases and tumor-related diseases.

##STR00001##