Abstract: Disclosed herein are (6-(4-(trifluoromethyl)pyridin-3-yl)pyridazin-3-yl)octahydrocyclopenta[c]pyrrol-5-amine, (6-(4-(difluoromethyl)pyridin-3-yl)pyridazin-3-yl)octahydrocyclopenta[c]pyrrol-5-amine, and (6-(2-(trifluoromethyl)pyridin-3-yl)pyridazin-3-yl)octahydrocyclopenta[c]pyrrol-5-amine compounds, useful as antagonists of the muscarinic acetylcholine receptor M4 (mAChR M4). Also disclosed herein are methods of making the compounds, pharmaceutical compositions comprising the compounds, and methods of treating disorders using the compounds and compositions.

Abstract: Indazole compounds which are useful as allosteric potentiators/positive allosteric modulators of the metabotropic glutamate receptor subtype 4 (mGluR4); synthetic methods for making the compounds; pharmaceutical compositions comprising the compounds; and methods of using the compounds, for example, in treating neurological and psychiatric disorders or other disease states associated with glutamate dysfunction.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: 5,6,7,8-Tetrahydro-1,6-naphthyridines substituted in the 6-position with pyrimido[1,2-b]pyridazin-4-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Disclosed herein are analogs of 4-(7,8-dihydro-1,6-naphthyridin-6(5H)-yl)quinazoline and 4-(7,8-dihydro-1,6-naphthyridin-6(5H)-yl)pyrido[2,3-d]pyrimidine, which may be useful as positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4). Also disclosed herein are methods of making the compounds, pharmaceutical compositions comprising the compounds, and methods of treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction using the compounds and compositions.

Abstract: Disclosed are negative allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGlu5); synthetic methods for making the compounds; pharmaceutical compositions comprising the compounds; and methods of treating neurological and psychiatric disorders associated with glutamate dysfunction using the compounds and compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Disclosed herein are tricyclic compounds, including pyrimido[4?,5?:4,5]thieno[2,3-c]pyridazine-8-amine, pyrido[3?,2?:4,5]thieno[3,2-d]pyrimidine-4-amine, pyrazino[2?,3?:4,5]thieno[3,2-d]pyrimidin-4-amine, pyrido[3?,2?:4,5]furo[3,2-d]pyrimidin-4-amine, and pyrimido[4?,5?:4,5]furo[2,3-c]pyridazin-8-amine compounds, which may be useful as positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4). Also disclosed herein are methods of making the compounds, pharmaceutical compositions comprising the compounds, and methods of treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction using the compounds and compositions.

Abstract: The present invention relates to 7,8-dihydro-5H-1,6-naphthyridine derivatives of formula (I) The present compounds are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) for use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction. An exemplary compound is e.g. example 1: 5,6-dimethyl-4-[3-(trifluoromethyl)-7,8-dihydro-5H-1,6-naphthyridin-6-yl]thieno[2,3-d]pyrimidine (compound 1): Data on the activity of exemplary compounds in an mAChR M4 cell-based assay is provided.

Abstract: Deuterium-labeled 4-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)oxy)piperidines substituted with pyrrolo[3,4-b]pyridin-5-one, furo[3,4-b]pyridin-5(7H)-one, or [1,2,4]triazolo[4,3-a]pyrimidin-3(2H)-one are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: The present invention relates to 6-([1,2,4]triazolo[4,3-b]pyridazin-6-yl)-7,8-dihydro-5H-1,6-naphthyridine derivatives, 6-(imidazo[1,2-b]pyridazin-6-yl)-7,8-dihydro-5H-1,6-naphthyridine derivatives or 6-(imidazo[1,5-b]pyridazin-6-yl)-7,8-dihydro-5H-1,6-naphthyridine derivatives of formula (I) The present compounds are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) for use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction. An exemplary compound is e.g. compound 1 Data on the activity of exemplary compounds in an mAChR M4 cell-based assay is provided.

Abstract: Disclosed are negative allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGlu5); synthetic methods for making the compounds; pharmaceutical compositions comprising the compounds; and methods of treating neurological and psychiatric disorders associated with glutamate dysfunction using the compounds and compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: 6,7-Dihydrothiazolo[5,4-c]pyridines substituted in the 5-position with heterocyclic rings are positive allosteric modulators of the muscarinic acetylcholine receptor M4 (mAChR M4) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: 6,7-Dihydrothiazolo[5,4-c]pyridines substituted in the 5-position with heterocyclic rings are positive allosteric modulators of the muscarinic acetylcholine receptor Ma (mAChR MA) and may have use in treating neurological and psychiatric disorders associated with muscarinic acetylcholine receptor dysfunction.

Abstract: Disclosed are compounds of formula (I) wherein G1 is as antagonists of the muscarinic acetylcholine receptor M4 (mAChR M4) for use in the treatment of e.g. a neurodegenerative disorder, a movement disorder, or a brain disorder, such as e.g. Parkinson's disease, drug-induced Parkinsonism, dystonia, Tourette's syndrome, dyskinesias, schizophrenia, cognitive deficits associated with schizophrenia, excessive daytime sleepiness, attention deficit hyperactivity disorder (ADHD), Huntington's disease, chorea, cerebral palsy, and progressive supranuclear palsy. An exemplary compound is e.g. (2,5-difluoro-4-(6-(((3aR,5s,6aS)-2- ((tetrahydro-2H-pyran-4-yl)methyl)octahydrocyclopenta[c]pyrrol-5- yl)amino)pyridazin-3-yl)phenyl)(imino)(methyl)-?6-sulfanone (e.g. example 12; compound no. 7) Pharmacological data on the activity of the compounds in an mAChR M4 cell-based assay are provided (e.g. table 2) TABLE 2 Human M4 Cpd. No. IC50 (nM) Emin (%)* 1 13.4 4 2 39.6 2 3 18.

Abstract: Described are positive allosteric modulators of muscarinic acetylcholine receptor M1 (mAChR M1), pharmaceutical compositions including the compounds, and methods of using the compounds and compositions for treating neurological disorders, psychiatric disorders, or a combination thereof.

Abstract: Described are deuterium-labeled 6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one and isoindolin-1-one positive allosteric modulators of muscarinic acetylcholine receptor M1(mAChR M1), pharmaceutical compositions including the compounds, and methods of using the compounds and compositions for treating neurological disorders, psychiatric disorders, or a combination thereof.