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: 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: 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: Disclosed herein are pyrido[3?,2?:4,5]thieno[3,2-d]pyrimidine and pyrimido[4?,5?:4,5]thieno[2,3-c]pyridazine compounds, which may be useful as positive allostenc 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 herein are pyrido[3?,2?:4,5]thieno[3,2-d]pyrimidine and pyrimido[4?,5?:4,5]thieno[2,3-c]pyridazine compounds, which may be useful as positive allostenc 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 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: 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: 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 provides novel substituted isoxazole compounds, pharmaceutical compositions, therapeutic uses and processes for preparing the same.

Abstract: This invention relates to compounds of formula (I) wherein A is S, O, N, or CH; B is S, O, N, or CH; R1 and R2 are the same or are different and are C1-8 alkyl, C2-8 alkylene, C3-8 cycloalkyl, aryl, heteroaryl, heterocycloalkyl, C3-6 cycloalkylaryl, or heterocycloaryl; wherein said alkyl, alkylene, cycloalkyl, aryl, heteroaryl, heterocyclyl, cycloalkylaryl, or heterocycloaryl are unsubstituted or substituted by one or more groups selected from the group consisting of halogen, C1-8 alkyl, C1-8alkoxy, C1-8thioalkoxy, cycloalkyl, aryl, heteroaryl, heterocycloalkyl, CF3, SCF3, NHC(O)nR5, S(O)mR5, S(O)2NR5R6, C(S)NR5R6, CONR5R6, C(O)nR5; n is 0, 1 or 2; m is 0, 1 or 2; R5 is hydrogen, alkyl, aryl, alkylaryl, heterocycloalkyl, or heteroaryl and is unsubstituted or substituted by one or more groups selected from the group consisting of alkyl, C1-8alkoxy, aryl, heteroaryl, halogen, NO2, CN, N3, SCF3, and CF3; R6 is hydrogen, alkyl, aryl, alkylaryl, heterocycloalkyl, or heteroaryl and is unsubstituted or substi

Abstract: Isochromans and their derivatives have been chemically synthesized. These compounds possess significant phytotoxic activity which may be used as a biodegradable contact herbicide. The synthetic method allows for economic production of these herbicides.