Abstract: A condensed heterocyclic compound has a sepiapterin reductase inhibitory action and is particularly useful for treatment of a pain. The condensed heterocyclic compound represented by Formula (I) below (R1 represents a hydrocarbon group or the like; R2 and R3 represent a hydrogen atom or the like; R4, X, and Y represent defined substituents), a tautomer or a pharmaceutically acceptable salt of the compound, or a solvate of any of these.

Abstract: A novel compound having HDAC2 inhibitory activity is provided. A compound represented by Formula (I): wherein the group represented by Formula: is a group represented by Formula: or the like, wherein R3 is each independently amino or the like, and n is an integer of 0 to 4, X1 is N or the like, X2 is N or the like, R4 and R5 are each independently a hydrogen atom or the like, R1 is substituted with Substituent group C or unsubstituted non-aromatic carbocyclyl or the like, Substituent group C is halogen or the like, and R2 is a hydrogen atom, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention is the following Amphotericin B derivative: wherein each symbol is defined in description. The compound of the present invention has 16th position (X) is urea structure, cyclic structure, hydroxyalkyl or substituted monoalkylcarbamoyl. The compound of the present invention has antifungal activity.

Abstract: The present invention is the following Amphotericin B derivative: wherein each symbol is defined in description. The compound of the present invention has 16th position (X) is urea structure, cyclic structure, hydroxyalkyl or substituted monoalkylcarbamoyl. The compound of the present invention has antifungal activity.

Abstract: The present invention is the following Amphotericin B derivative: wherein each symbol is defined in description. The compound of the present invention has 16th position (X) is urea structure, cyclic structure, hydroxyalkyl or substituted monoalkylcarbamoyl. The compound of the present invention has antifungal activity.

Abstract: Cyclopentene carboxylic acid-related compounds as GABA-AT inhibitors for treatment of various addictions, disorders and disease states.

Abstract: Cyclopentene carboxylic acid-related compounds as GABA-AT inhibitors for treatment of various addictions, disorders and disease states.

Abstract: This invention provides compounds having antiviral activities especially inhibiting activity for influenza virus, more preferably provides substituted 3-hydroxy-4-pyridone derivatives having cap-dependent endonuclease inhibitory activity.

Abstract: Cyclopentene carboxylic acid-related compounds as GABA-AT inhibitors for treatment of various addictions, disorders and disease states.

Abstract: The present invention is the following Amphotericin B derivative: wherein each symbol is defined in description. The compound of the present invention has 16th position (X) is urea structure, cyclic structure, hydroxyalkyl or substituted monoalkylcarbamoyl. The compound of the present invention has antifungal activity.

Abstract: Cyclopentene carboxylic acid-related compounds as GABA-AT inhibitors for treatment of various addictions, disorders and disease states.

Abstract: Cyclopentene carboxylic acid-related compounds as GABA-AT inhibitors for treatment of various addictions, disorders and disease states.

Abstract: The present invention is related to a compound represented by formula (I) wherein R1 is a hydrogen atom, substituted or unsubstituted alkyl, substituted or unsubstituted aromatic carbocyclyl, or the like; X is —N(R3)—, —O—, or —S—; Y is ?C(R4)—, or ?N—; Z is —N(R7)—, —O—, or —S—; R2 is substituted or unsubstituted alkyloxy, or the like, or a group represented by the following formula: —(CR2aR2b)n—R2c, wherein R2a is each independently a hydrogen atom, halogen, or the like; R2b is each independently a hydrogen atom, halogen, or the like; R2a and R2b which are attached to the same carbon atom may be taken together to form oxo, a substituted or unsubstituted non-aromatic carbocycle, or the like; two of R2a which are attached to the adjacent carbon atoms and/or two of R2b which are attached to the adjacent carbon atoms may be taken together to form a bond; R2c is substituted or unsubstituted aromatic carbocyclyl, or the like; n is an integer from 1 to 3; R3 and R7 are each independently a hydrogen atom, subs

Abstract: This invention provides compounds having antiviral activities especially inhibiting activity for influenza virus, more preferably provides substituted 3-hydroxy-4-pyridone derivatives having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention is related to a compound represented by formula (I) wherein R1 is a hydrogen atom, substituted or unsubstituted alkyl, substituted or unsubstituted aromatic carbocyclyl, or the like; X is —N(R3)—, —O—, or —S—; Y is ?C(R4)—, or ?N—; Z is —N(R7)—, —O—, or —S—; R2 is substituted or unsubstituted alkyloxy, or the like, or a group represented by the following formula: —(CR2aR2b)n—R2c, wherein R2a is each independently a hydrogen atom, halogen, or the like; R2b is each independently a hydrogen atom, halogen, or the like; R2a and R2b which are attached to the same carbon atom may be taken together to form oxo, a substituted or unsubstituted non-aromatic carbocycle, or the like; two of R2a which are attached to the adjacent carbon atoms and/or two of R2b which are attached to the adjacent carbon atoms may be taken together to form a bond; R2c is substituted or unsubstituted aromatic carbocyclyl, or the like; n is an integer from 1 to 3; R3 and R7 are each independently a hydrogen atom, subs

Abstract: This invention provides compounds having antiviral activities especially inhibiting activity for influenza virus, more preferably provides substituted 3-hydroxy-4-pyridone derivatives having cap-dependent endonuclease inhibitory activity.

Abstract: This invention provides compounds having antiviral activities especially inhibiting activity for influenza virus, more preferably provides substituted 3-hydroxy-4-pyridone derivatives having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention is related to a compound represented by formula (I) wherein R1 is a hydrogen atom, substituted or unsubstituted alkyl, substituted or unsubstituted aromatic carbocyclyl, or the like; X is —N(R3)—, —O—, or —S—; Y is ?C(R4)—, or ?N—; Z is —N(R7)—, —O—, or —S—; R2 is substituted or unsubstituted alkyloxy, or the like, or a group represented by the following formula: —(CR2aR2b)n—R2c, wherein R2a is each independently a hydrogen atom, halogen, or the like; R2b is each independently a hydrogen atom, halogen, or the like; R2a and R2b which are attached to the same carbon atom may be taken together to form oxo, a substituted or unsubstituted non-aromatic carbocycle, or the like; two of R2a which are attached to the adjacent carbon atoms and/or two of R2b which are attached to the adjacent carbon atoms may be taken together to form a bond; R2c is substituted or unsubstituted aromatic carbocyclyl, or the like; n is an integer from 1 to 3; R3 and R7 are each independently a hydrogen atom, sub

Abstract: This invention provides compounds having antiviral activities especially inhibiting activity for influenza virus, more preferably provides substituted 3-hydroxy-4-pyridone derivatives having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention discloses novel piperidine and pyrrolidine derivatives having NPY Y5 receptor antagonistic activity. Specifically, the present invention discloses a compound represented by the formula (I), a pharmaceutically acceptable salt or a solvate thereof: wherein A is substituted or unsubstituted monocyclic aryl or monocyclic heterocyclyl; X is a single bond or C(?O); Y is a single bond, CR5R6NR7 or C(?O)NR7; R1 and R2 are independently hydrogen or substituted or unsubstituted alkyl; R3 is substituted or unsubstituted aryl or heterocyclyl; R4 is halogen, substituted or unsubstituted alkyl, alkoxy, aryloxy or heterocyclyloxy, etc.; p is an integer of 0 to 2; q is 0 or 1; m is 0 or 1; n is an integer of 0 to 5; and B is aromatic carbocycle, monocyclic heterocycle or bicyclic fused hetero ring.