Abstract: The invention includes a compound of formula I: wherein R1, Y, A, n, R4 and Z have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of PDE4 function and are useful for improving cognitive function and/or treating cognitive disorders or impairment, traumatic and/or ischemic injuries of the central and peripheral nervous system and/or psychiatric disorders in animals, especially humans.

Abstract: The invention provides a compound of formula I: wherein A1, A2, A3, R1, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of monoamine oxidase B (MAO-B) enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a novel chemical series of formula I, as well as methods of use thereof for binding to the benzodiazepine site of the GABAA receptor and negatively modulating the ?5 subtype of GABAA, and use of the compound of formula I in the manufacture of a medicament for the treatment of GABAA receptor associated disorders. The invention further provides a method of modulation of one or more GABAA subtypes in an animal comprising administering to the animal an effective amount of a compound of formula (I).

Abstract: The invention includes a compound of formula I: wherein R1, Y, A, n, R4 and Z have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of PDE4 function and are useful for improving cognitive function and/or treating cognitive disorders or impairment, traumatic and/or ischemic injuries of the central and peripheral nervous system and/or psychiatric disorders in animals, especially humans.

Abstract: The invention includes a compound of formula I: wherein R1, Y, A, n, R4 and Z have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of PDE4 function and are useful for improving cognitive function and/or treating cognitive disorders or impairment, traumatic and/or ischemic injuries of the central and peripheral nervous system and/or psychiatric disorders in animals, especially humans.

Abstract: The invention provides a compound of formula I: wherein A1, A2, A3, R1, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of monoamine oxidase B (MAO-B) enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a compound of formula I: wherein R1-R6, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of MAO-B enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention includes a compound of formula I: wherein R1, X, Z, n, and m have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds ate inhibitors of PDE4function and are useful for improving cognitive function in animals.

Abstract: The invention provides a novel chemical series of formula I, as well as methods of use thereof for binding to the benzodiazepine site of the GABAA receptor and modulating GABAA, and use of the compound of formula I for the treatment of GABAA receptor associated disorders. The general structure of formula I is shown below and can exist in tautomeric forms: The invention further provides a method of modulation of one or more GABAA subtypes in an animal comprising administering to the animal an effective amount of a compound of formula (I).

Abstract: The invention includes a compound of formula I: wherein R1, X, Z, n, and m have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of PDE4 function and are useful for improving cognitive function in animals.

Abstract: The invention provides a novel chemical series of formula I, as well as methods of use thereof for binding to the benzodiazepine site of the GABAA receptor and negatively modulating the ?5 subtype of GABAA, and use of the compound of formula I for the treatment of GABAA receptor associated disorders. The general structure of formula I is shown below: The invention further provides a method of modulation of one or more GABAA subtypes in an animal comprising administering to the animal an effective amount of a compound of formula (I).

Abstract: The invention provides a compound of formula I: wherein R1-R6, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of MAO-B enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a compound of formula I: wherein A1, A2, A3, R1, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of monoamine oxidase B (MAO-B) enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a novel chemical series of formula I, as well as methods of use thereof for binding to the benzodiazepine site of the GABAA receptor and modulating GABAA, and use of the compound of formula I for the treatment of GABAA receptor associated disorders. The general structure of formula I is shown below: The invention further provides a method of modulation of one or more GABAA subtypes in an animal comprising administering to the animal an effective amount of a compound of formula (I).

Abstract: The invention includes a compound of formula I: wherein R1, X, Z, n, and m have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of PDE4 function and are useful for improving cognitive function in animals.

Abstract: Drug compositions comprising the compound HT-2157 and their therapeutic uses, including the treatment of CNS disorders and cognitive impairments and the modulation of cognitive function, are disclosed. More particularly, the present invention relates to enteric-coated formulations comprising HT-2157 that reduce the appearance of clinically relevant methemoglobinemia relative to administration of non-enteric-coated formulations comprising HT-2157.

Abstract: The invention provides a compound of formula I: wherein A1, A2, A3, R1, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of monoamine oxidase B (MAO-B) enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a compound of formula I: wherein A1, A2, A3, R1, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of monoamine oxidase B (MAO-B) enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.

Abstract: The invention provides a novel chemical series of formula I, as well as methods of use thereof for binding to the benzodiazepine site of the GABAA receptor and negatively modulating the ?5 subtype of GABAA, and use of the compound of formula I in the manufacture of a medicament for the treatment of GABAA receptor associated disorders. The invention further provides a method of modulation of one or more GABAA subtypes in an animal comprising administering to the animal an effective amount of a compound of formula (I).

Abstract: The invention provides a compound of formula I: wherein R1-R6, X, Y, and B have any of the values described herein, as well as salts of such compounds, compositions comprising such compounds, and therapeutic methods that comprise the administration of such compounds. The compounds are inhibitors of MAO-B enzyme function and are useful for improving cognitive function and for treating psychiatric disorders in animals.