Abstract: Compounds of Formula I: wherein X, Y, Z, R1, R2, R3, R4 are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: The present invention relates to compounds 3-amino-1-hydroxy-2-oxo-1,2,3, 4-tetrahydroquinoline-7-carbonitrile, 3-amino-1-hydroxy-7-(2-methoxyethoxy)-3,4-dihydroquinolin-2(1H)-one, and 3-amino-1-hydroxy-7-[(1S)-2-methoxy-1-methylethoxy]-3,4-dihydroquinolin-2(1H)-one, including racemic mixtures and resolved enantiomers thereof, to pharmaceutically acceptable salts thereof, and to the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: Compounds of Formula I: wherein X, Y, Z, R1, R2, R3, R4 are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, A, and n are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.

Abstract: The present invention relates to compounds 3-amino-1-hydroxy-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile, 3-amino-1-hydroxy-7-(2-methoxyethoxy)-3,4-dihydroquinolin-2(1H)-one, and 3-amino-1-hydroxy-7-[(1S)-2-methoxy-1-methylethoxy]-3,4-dihydroquinolin-2(1H)-one, including racemic mixtures and resolved enantiomers thereof, to pharmaceutically acceptable salts thereof, and to the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: Compounds of Formula X: wherein A, X, Y, Z, R5, R6a, and R6b are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: Compounds of Formula X: wherein A, X, Y, Z, R5, R6a, and R6b are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other neurodegenerative and/or neurological disorders in mammals, including humans.

Abstract: The invention pertains to heteroaromatic compounds that serve as effective phosphodiesterase (PDE) inhibitors. In particular, the invention relates to said compounds which are selective inhibitors of PDE10. The invention also relates to intermediates for preparation of said compounds; pharmaceutical compositions comprising said compounds; and the use of said compounds in a method for treating certain central nervous system (CNS) or other disorders.

Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R1, R2, R3, A, and n are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.

Abstract: The invention provides PDE9-inhibiting compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein R, R1, R2 and R3 are as defined herein. Pharmaceutical compositions containing the compounds of Formula I, and uses thereof in treating neurodegenerative and cognitive disorders, such as Alzheimer's disease and schizophrenia, are also provided.

Abstract: The invention pertains to heteroaromatic compounds that serve as effective phosphodiesterase (PDE) inhibitors. In particular, the invention relates to said compounds which are selective inhibitors of PDE10. The invention also relates to intermediates for preparation of said compounds; pharmaceutical compositions comprising said compounds; and the use of said compounds in a method for treating certain central nervous system (CNS) or other disorders.

Abstract: The invention pertains to heteroaromatic compounds that serve as effective phosphodiesterase (PDE) inhibitors. In particular, the invention relates to said compounds which are selective inhibitors of PDE10. The invention also relates to intermediates for preparation of said compounds; pharmaceutical compositions comprising said compounds; and the use of said compounds in a method for treating certain central nervous system (CNS) or other disorders.

Abstract: The present invention relates to compounds of Formula I, or a stereoisomer thereof, a pharmaceutically acceptable salt thereof, or a prodrug thereof. The compounds of the inventions are CRF1 receptor antagonists. Compounds of the invention are useful for treating, in a warm-blooded animal, particularly a mammal, and more particularly a human, various disorders that are associated with CRF or CRF1 receptors, or disorders the treatment of which can be effected or facilitated by antagonizing CRF1 receptors.

Abstract: This invention relates to compounds of Formula I, a stereoisomer thereof, a pharmaceutically acceptable salt thereof, a prodrug thereof, or a pharmaceutically acceptable salt of a prodrug thereof. The compounds interact with CRF1 receptors, including human CRF1 receptors. This invention also relates to methods of using the compounds of the invention to treat a disorder or condition, the treatment of which can be effected or facilitated by antagonizing a CRF receptor, such as CNS disorders or diseases, particularly anxiety-related disorders such as anxiety, and mood disorders such as major depression.

Abstract: Substituted aryl pyrazine derivatives of the formula I as defined herein, and their use in treating anxiety disorders, depression and stress related disorders are disclosed.

Abstract: This invention relates to substituted pyrimidinone and pyrimidithione derivatives that bind with high affifnity to CRF1 receptors, including human CRF1 receptors. This invention also relates to methods of using the compounds of the invention to treat a disorder or condition, the treatment of which can be effected or facilitated by antagonizing a CRF receptor, such as CNS disorders or diseases, particularly anxiety disorders, and depression and stress related disorders.

Abstract: Substituted aryl 1,4-pyrazine derivatives of formula I as defined herein and their use in treating anxiety disorders, depression and stress related disorders are disclosed.

Abstract: The present invention provides substituted pyrazine derivatives of Formula I, that are CRF1 receptor antagonists, including human CRF1 receptors. This invention also relates to use of compounds of the invention for treating a disorder or condition, the treatment of which can be effected or facilitated by antagonizing a CRF receptor, such as CNS disorders, particularly anxiety-related disorders and mood disorders.

Abstract: Substituted aryl 1,4-pyrazine derivatives and their use in treating anxiety disorders, depression and stress related disorders are disclosed.

Abstract: The present invention provides substituted pyrazine derivatives of Formula I, 1