Abstract: Provided are compounds having a serotonin 5-HT2A receptor inverse agonism, pharmaceutically acceptable salts thereof, and a composition comprising them, A composition comprising the compounds of Formula (I): or pharmaceutically acceptable salts thereof, wherein: R1 is substituted or unsubstituted aromatic heterocyclyl or the like; R2 is each independently a hydrogen atom or the like; R3 is each independently a hydrogen atom or the like; n is 1 or 2; R4 is substituted or unsubstituted non-aromatic nitrogen-containing heterocyclyl or the like; L is —NR8— or the like; R8 is a hydrogen atom or the like; R8 is each independently a hydrogen atom or the like; R8 is each independently a hydrogen atom or the like; p is 1 or 2; and R7 is a group represented by Formula: wherein R9 is substituted or unsubstituted alkyloxy or the like; R10 is a hydrogen atom or the like; R11 is halogen or the like; and m is 0 or 1.

Abstract: The invention relates to Substituted-Quinoxaline-Type Bridged-Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ß production, especially an effect of inhibiting selective BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ß proteins. A compound of the formula (IA) or the like, wherein -A1- is alkylene optionally substituted with one or more halogen; R2 is substituted or unsubstituted alkyl or the like; R3 and R4 are each independently a hydrogen atom, halogen, alkyl or haloalkyl or the like; R5 is a hydrogen atom or halogen; A4 is N or CR6 wherein R6 is a hydrogen atom, halogen, or substituted or unsubstituted alkyl; A5 is NR7 or CR8R9; A6 is CR18 or N; R18 is a hydrogen atom; R7 is substituted or unsubstituted alkyl; R8 and R9 are each independently a hydrogen atom, halogen, alkyl or haloalkyl or the like; and Ring B is bicyclic ring; or a pharmaceutically acceptable salt thereof.

Abstract: The invention relates to Substituted-Quinoxaline-Type Bridged-Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: Compounds of Formula (I): where R1, R2, R5, a, and b are disclosed herein, and pharmaceutically acceptable derivatives thereof, compositions thereof, and methods to treat or prevent a condition (such as pain) thereof. The disclosure also provides compounds of formula QB or O2 and their utility in manufacture processes in obtaining compounds of Formula (I).

Abstract: The invention relates to Substituted-Quinoxaline-Type Bridged-Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: The invention relates to Substituted-Quinoxaline-Type Bridged-Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins. A compound of the formula (I): wherein X is —C(R3a)(R3b)—, —C(R3a)(R3b)—C(R3c)(R3d)— or —C(R3a)?C(R3c)—, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R3a, R3b, R3c and R3d are each independently hydrogen, halogen or the like, R4 is hydrogen or halogen, Ring B is substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent, for diseases induced by production, secretion and/or deposition of amyloid ? proteins. A compound of the formula (I) wherein X is —S— or —O—, R3a is alkyl, haloalkyl or the like, R2a is H, halogen, alkyloxy, haloalkyloxy or the like, R2b is H or the like, R3b is H or alkyl, ring A and ring B is each independently a substituted or unsubstituted aromatic carbocycle, a substituted or unsubstituted aromatic heterocycle or the like, and R1 is substituted or unsubstituted alkyl or the like, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins. A compound of the formula (I): wherein X is —C(R3a)(R3b)—, —C(R3a)(R3b)—C(R3c)(R3d)— or —C(R3a)?C(R3c)—, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R3a, R3b, R3c and R3d are each independently hydrogen, halogen or the like, R4 is hydrogen or halogen, Ring B is substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins. A compound of the formula (I): wherein X is —C(R3a)(R3b)—, —C(R3a)(R3b)—C(R3c)(R3d)— or —C(R3a)?C(R3c)—, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R3a, R3b, R3c and R3d are each independently hydrogen, halogen or the like, R4 is hydrogen or halogen, Ring B is substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, or a pharmaceutically acceptable salt thereof.

Abstract: The invention relates to Substituted-Quinoxaline-Type Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound.

Abstract: The invention relates to Substituted-Quinoxaline-Type Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound.

Abstract: The invention relates to Substituted-Quinoxaline-Type Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound.

Abstract: Compounds of Formula (I): where R1, R2, R5, a, and b are disclosed herein, and pharmaceutically acceptable derivatives thereof (a “Substituted-Quinoxaline-Type Bridged-Piperidine Compound”), compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: The present invention provides a compound which has an effect of inhibiting amyloid ? production, especially an effect of inhibiting BACE1, and which is useful as a therapeutic or prophylactic agent for diseases induced by production, secretion and/or deposition of amyloid ? proteins. A compound of the formula (I): wherein X is —C(R3a)(R3b)—, —C(R3a)(R3b)—C(R3c)(R3d)— or —C(R3a)?C(R3c)—, R1 is substituted or unsubstituted alkyl or the like, R2a, R2b, R3a, R3b, R3c and R3d are each independently hydrogen, halogen or the like, R4 is hydrogen or halogen, Ring B is substituted or unsubstituted carbocycle or a substituted or unsubstituted heterocycle, or a pharmaceutically acceptable salt thereof.

Abstract: The invention relates to Substituted-Quinoxaline-Type Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound.

Abstract: The invention relates to Substituted-Quinoxaline-Type Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Piperidine Compound.

Abstract: Compounds of Formula (I): where R1, R2, R5, a, and b are disclosed herein, and pharmaceutically acceptable derivatives thereof (a “Substituted-Quinoxaline-Type Bridged-Piperidine Compound”), compositions comprising an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted-Quinoxaline-Type Bridged-Piperidine Compound.

Abstract: The present invention provides, for example, a compound mentioned below as a medicament for treating or preventing the diseases induced by production, secretion or deposition of amyloid-?proteins. A compound of the formula (I): wherein R1, R2a, R2b, R3, R4, R5a, R5b, R6a, R6b, X, Y, Z, ring A and the dashed lines are defined in the specification, its pharmaceutically acceptable salt or a solvate thereof.