Abstract: Provided are a compound represented by general formula (I), or the pharmaceutically acceptable salt thereof, (wherein Ra represents a hydrogen atom or the like, R1 and R2 may be the same or different, and each represents a hydrogen atom, optionally substituted lower alkyl or cycloalkyl, or R1 and R2 are combined together with the adjacent nitrogen atom thereto to form nitrogen-containing heterocyclic group, and Z represents a bicyclic heterocyclic group in which optionally substituted two six-membered rings are fused to each other, or the like) and the like.

Abstract: The present invention provides a sterol derivative or a pharmaceutically acceptable salt thereof having an activity to promote proliferation of neural stem cells. Namely, the present invention provides a sterol derivative represented by the general formula (I) (wherein Y represents optionally substituted lower alkyl or the like; Xa and Xb are the same or different, and represent a bond or the like; R1, R2, R3, R4, R7 and R8 are the same or different, and represent a hydrogen atom or the like; R5 and R6 are the same or different, and represent a hydrogen atom or the like; R9 represents a hydrogen atom or the like; R10 and R11 together represent a bond or the like; and R12 represents a hydrogen atom or the like) or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a sterol derivative or a pharmaceutically acceptable salt thereof having an activity to promote proliferation of neural stem cells. Namely, the present invention provides a sterol derivative represented by the general formula (I) (wherein Y represents optionally substituted lower alkyl or the like; Xa and Xb are the same or different, and represent a bond or the like; R1, R2, R3, R4, R7 and R8 are the same or different, and represent a hydrogen atom or the like; R5 and R6 are the same or different, and represent a hydrogen atom or the like; R9 represents a hydrogen atom or the like; R10 and R11 together represent a bond or the like; and R12 represents a hydrogen atom or the like) or a pharmaceutically acceptable salt thereof.

Abstract: Provided are a compound represented by general formula (I), or the pharmaceutically acceptable salt thereof, (wherein Ra represents a hydrogen atom or the like, R1 and R2 may be the same or different, and each represents a hydrogen atom, optionally substituted lower alkyl or cycloalkyl, or R1 and R2 are combined together with the adjacent nitrogen atom thereto to form nitrogen-containing heterocyclic group, and Z represents a bicyclic heterocyclic group in which optionally substituted two six-membered rings are fused to each other, or the like) and the like.

Abstract: The present invention provides a preventive and/or therapeutic agent for neutrophilic inflammatory diseases which comprises, as an active ingredient, a bicyclic heterocyclic compound represented by formula (I): [wherein R1 represents a hydrogen atom, substituted or unsubstituted alkyl, or the like, A1-A2-A3-A4 represents N?CR3—CR4?CR5 (wherein R3, R4, and R5 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, and the like), Q represents substituted or unsubstituted phenylene, and the like, and T represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aroyl, and the like].

Abstract: A pharmaceutical composition comprising as an active ingredient, an aromatic heterocyclic compound represented by the formula (I): [wherein Q1 represents CR2 (wherein R2 represents a hydrogen atom or the like) or the like; Q2 represents CR3 (wherein R3 represents a hydrogen atom or the like) or the like; Q3 represents a nitrogen atom or the like; R1 represents —C(?O)OR16 (wherein R16 represents a hydrogen atom or the like) or the like; R5 represents a hydrogen atom or the like; R6 represents optionally substituted cycloalkyl or the like; X and Y may be the same or different and each represent CH in which H may be substituted with a substituent or the like; and Z represents a nitrogen atom or the like] or the like is provided.

Abstract: The present invention provides a sterol derivative or a pharmaceutically acceptable salt thereof having an activity to promote proliferation of neural stem cells. Namely, the present invention provides a sterol derivative represented by the general formula (I) (wherein Y represents optionally substituted lower alkyl or the like; Xa and Xb are the same or different, and represent a bond or the like; R1, R2, R3, R4, R7 and R8 are the same or different, and represent a hydrogen atom or the like; R5 and R6 are the same or different, and represent a hydrogen atom or the like; R9 represents a hydrogen atom or the like; R10 and R11 together represent a bond or the like; and R12 represents a hydrogen atom or the like) or a pharmaceutically acceptable salt thereof.

Abstract: The invention provides a pyrimidodiazepinone derivative represented by the general formula (I) [wherein n represents 1 or 2, Z represents a hydrogen atom or the like, R1 and R2 may be the same or different, and each represents a hydrogen atom or the like, A represents a bond, (CH2)m (wherein m represents an integer of 1 to 4), optionally substituted phenylene, optionally substituted pyridinediyl, or C?O, R3 represents a hydrogen atom, optionally substituted lower alkyl, or the like, and R4 represents a hydrogen atom or the like], or a pharmaceutically acceptable salt thereof or the like.

Abstract: The invention provides a pyrimidodiazepinone derivative represented by the general formula (I) [wherein n represents 1 or 2, Z represents a hydrogen atom or the like, R1 and R2 may be the same or different, and each represents a hydrogen atom or the like, A represents a bond, (CH2)m (wherein m represents an integer of 1 to 4), optionally substituted phenylene, optionally substituted pyridinediyl, or C?O, R3 represents a hydrogen atom, optionally substituted lower alkyl, or the like, and R4 represents a hydrogen atom or the like], or a pharmaceutically acceptable salt thereof or the like.

Abstract: The present invention provides a preventive and/or therapeutic agent for neutrophilic inflammatory diseases which comprises as an active ingredient, a bicyclic heterocyclic compound represented by formula (I): [wherein R1 represents a hydrogen atom, substituted or unsubstituted alkyl, or the like, A1-A2-A3-A4 represents N?CR3—CR4?CR5 (wherein R3, R4, and R5 are the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, and the like), Q represents substituted or unsubstituted phenylene, and the like, and T represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aroyl, and the like].

Abstract: The present invention provides an agent for prevention and/or treatment of itching comprising a substance capable of suppressing the function involved in signal transduction of GPR4 as an active ingredient. It also provides a nitrogen-containing tricyclic compound represented by the formula (I) or a quaternary ammonium salt thereof, or a pharmaceutically acceptable salt thereof; [wherein R1 represents substituted or unsubstituted lower alkyl, etc.; R2 represents hydrogen, substituted or unsubstituted lower alkyl, etc.; R3 and R4 are the same or different and each represents hydrogen, lower alkyl, etc.; n represents 0 or 1; X represents —(CH2)2—, etc.; and Y represents the formula (II); (wherein W represents CH or a nitrogen atom; Z1 and Z2 are the same or different and each represents hydrogen, substituted or unsubstituted lower alkyl, etc.; and Z3 represents hydrogen, substituted or unsubstituted lower alkyl, etc.

Abstract: The present invention provides an agent for prevention and/or treatment of asthma comprising a substance capable of suppressing the function involved in signal transduction of GPR4 as an active ingredient.

Abstract: The present invention provides [1,2,4]triazolo[1,5-c]pyrimidine derivatives or pharmaceutically acceptable salts thereof which have adenosine A2A receptor antagonism and are useful for treating and/or preventing a disease induced by hyperactivity of an adenosine A2A receptor, the derivatives being represented by formula (I): (wherein R1 represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group; R2 represents a hydrogen atom, halogen, lower alkyl, lower alkanoyl, aroyl, substituted or unsubstituted aryl, or a substituted or unsubstituted aromatic heterocyclic group; R3 represents lower alkyl, lower cycloalkyl, substituted or unsubstituted lower alkanoyl, substituted or unsubstituted aryl, or a substituted or unsubstituted aromatic heterocyclic group; and Q represents a hydrogen atom or 3,4-dimethoxybenzyl).

Abstract: An oxygen-containing heterocyclic compound represented by following Formula (I): wherein R1 and R2 independently represent hydrogen, lower alkyl, cyano, —(CH2)n—E1—CO—G1 (wherein E1 represents a bond, O, or NH; and G1 represents hydrogen, substituted or unsubstituted lower alkyl, OR6, or NR7R8; and n represents an integer of 0 to 4), or the like; R1 and R2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R2, and R11 or R13 described below are combined to form a single bond; R3 represents hydrogen, phenyl, or halogen; R4 represents hydroxy, lower alkoxy, or the like; A represents —C(R9)(R10)— or O; B represents O, NR11, —C(R12)(R13)—, or —C(R14)(R15)— C(R16)(R17)—; D represents (i) —C(R18)(R19)—X— (wherein X represents —C(R21)(R22)—, S, or NR23), (ii) —C(R19a)═Y— [Y represents —C(R24)—Z— (wherein Z represents

Abstract: An oxygen-containing heterocyclic compound represented by following Formula (I): wherein R1 and R2 independently represent hydrogen, lower alkyl, cyano, —(CH2)n—E1—CO—G1 (wherein E1 represents a bond, O, or NH; and G1 represents hydrogen, substituted or unsubstituted lower alkyl, OR6, or NR7R8; and n represents an integer of 0 to 4), or the like; R1 and R2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R2, and R11 or R13 described below are combined to form a single bond; R3 represents hydrogen, phenyl, or halogen; R4 represents hydroxy, lower alkoxy, or the like; A represents —C(R9)(R10)— or O; B represents O, NR11, —C(R12)(R13)—, or —C(R14)(R15)—C(R16)(R17)—; D represents (i) —C(R18)(R19)—X— (wherein X represents —C(R21)(R22)—, S, or NR23), (ii) —C(R19a)═Y— [Y represents —C(R24)—Z— (wherein Z represents C

Abstract: An oxygen-containing heterocyclic compound represented by following Formula (I): 1