Abstract: It is intended to provide highly safe and efficacious blood flow promoters for cauda equina tissues. Among prostaglandin-like compounds having a weak hypotensive effect, compounds having an effect of promoting the blood flow in cauda equina tissues (excluding limaprost) are useful as highly safe blood flow promoters for cauda equina tissues and, therefore, are efficacious in preventing and/or treating lumbar pain, lower limb pain, lower limb palsy, intermittent claudication, vesicorectal failure, hypogonadism, etc. caused by cauda equina injuries.

Abstract: As a compound having a potent oral activity and a long-lasting cysLT1/cysLT2 receptor antagonistic activity, the compound of the formula (I): which exhibits potent antagonistic activity against the cysLT1/cysLT2 receptor, and have long-lasting effects even in case of oral administration, and therefore is useful as an oral agent for preventing and/or treating a variety of diseases, for example, respiratory disease (for example, asthma (bronchial asthma, etc.), chronic obstructive pulmonary disease (COPD), pulmonary emphysema, chronic bronchitis, pneumonia (interstitial pneumonia, etc.), severe acute respiratory syndrome (SARS), acute respiratory distress syndrome (ARDS), apnea syndrome, allergic rhinitis, sinusitis (acute sinusitis, chronic sinusitis, etc.), pulmonary fibrosis, coughing (chronic coughing, etc.), and the like) was developed.

Abstract: The present invention relates to a diketohydrazine derivative of formula (I) and a pharmaceutically acceptable salt thereof (the symbols in the formula have the same meaning as described in the specification). The compound of formula (I) has an inhibitory activity against cysteine protease, and it is useful for the treatment of inflammatory diseases, immune diseases, ischemic diseases, respiratory diseases, circulatory diseases, blood diseases, neuronal diseases, hepatic or biliary diseases, osseous or articular diseases, metabolic diseases, etc. And the compound has inhibitory activity against elastase and it is also useful for the treatment of COPD (chronic obstacle pulmonary diseases).

Abstract: The present invention relates to a diketohydrazine derivative of formula (I) and a pharmaceutically acceptable salt thereof (the symbols in the formula have the same meaning as described in the specification). The compound of formula (I) has an inhibitory activity against cysteine protease, and it is useful for the treatment of inflammatory diseases, immune diseases, ischemic diseases, respiratory diseases, circulatory diseases, blood diseases, neuronal diseases, hepatic or biliary diseases, osseous or articular diseases, metabolic diseases, etc. And the compound has inhibitory activity against elastase and it is also useful for the treatment of COPD (chronic obstacle pulmonary diseases).

Abstract: An EP2 agonist which may have an EP3 agonistic effect has an effect of regenerating and/or protecting nerves, and is therefore useful as a therapeutic agent for a disease of the peripheral nervous system, such as a lower or upper motor neuron disease, a nerve root disease, plexopathy, thoracic outlet compression syndrome, peripheral neuropathy, neurofibromatosis and neuromuscular transmission disease. An EP2 agonist which has an EP3 agonistic effect is a safe and effective agent for the regeneration and/or protection of nerves which has little influence on the circulatory system.

Abstract: A compound represented by formula (I) (wherein ring A is a nitrogen-containing ring which may have a substituent(s), E is a binding bond or a spacer of which main chain has an atom number of 1-8, Q is a hydrogen atom, a hydrocarbon group which may have a substituent(s) or a cyclic group which may have a substituent(s).), a salt thereof, an N-oxide thereof, a solvate thereof, or a prodrug thereof. Since the compounds of the present invention represented by formula (I), a salt thereof, an N-oxide thereof or a solvate thereof, or a prodrug thereof have the affinity to MBR, they are useful for the prevention and/or treatment for disease caused by stress.

Abstract: An N-containing five-membered ring compound of formula (I) wherein all symbols are the same as described in the specification, and a non-toxic salt thereof. The compound of formula (I) has an inhibitory activity against cysteine protease and therefore it is useful as an agent for the prophylaxis and/or treatment of inflammatory diseases, diseases induced by apoptosis, diseases induced by disorders of immune responses, autoimmune diseases, diseases induced by decomposition of proteins which compose organism, shock, circulatory system disorders, blood coagulation systems disorders, malignant tumors, acquired immune deficiency syndrome (AIDS) and AIDS-related complex (ARC), parasitic diseases, nerve degeneration diseases, pulmonary disorders, bone resorption diseases, endocrinesthenia, etc.

Abstract: The present invention relates to the compound represented by formula (I): (wherein, all the symbols has the same meanings as that of the specification), a salt thereof, a solvate thereof or a prodrug thereof. Since the compound of the present invention has an anti stress action, it is useful for preventive and/or therapeutic agent for a disease caused by stress, especially a digestive system disease caused by stress and is superior to oral absorption.

Abstract: The present invention relates to the compound presented by formula (I) (wherein all symbols in formula (I) are the same mean as the description shown in the specification.), mitocondorial benzogeazepin receptor (MBR) antagonist comprising the compound, the preventive and/or treatment medicine against diseases caused by stress of which an active ingredient is the compound. Since the compound represented by formula (I) has MBR antagonistic activity, and controls the production of neurosteroid, it is useful as the preventive and/or treatment medicine against diseases caused by stress.

Abstract: The compound represented by formula (I) (wherein D and G are cyclic group which may have a substituent(s) or alkyl which may have a substituent(s), W and Y are a bond or a spacer of which main chain has an atom number of 1-4, ringA and ringB are heterocyclic ring which may have a substituent(s), containing at least one carbon atom and one nitrogen atom and the ringA and ringB share one spiro carbon atom), a salt thereof, an N-oxide thereof or a solvate thereof, or a prodrug thereof. Since the compounds represented by formula (I), a salt thereof, an N-oxide thereof or a solvate thereof, or a prodrug thereof have the affinity to MBR, they are useful for the prevention and/or treatment for disease caused by stress.

Abstract: A compound having an inhibitory activity against cysteine protease, represented by formula (I): (wherein ring X is a heterocyclic group which may contain 1 to 4 hetero atoms selected from an nitrogen atom(s), a oxygen atom(s) and a sulfur atom(s) which may be oxidized, in addition to said nitrogen atom in the ring; J is a bond or a spacer having from 1 to 8 atoms; R, R1, R2 and R3 is each independently hydrogen atom or a substituent; n is 0 or an integer of 1 to 10), a salt thereof, a solvate thereof, or an N-oxide thereof, or a prodrug thereof; and an agent for prevention and/or treatment for a cysteine protease-related disease, such as osteoporosis, comprising it as an active ingredient are provided.

Abstract: The present invention relates to a compound of formula (I) wherein Y and Z each is independently N or C; ring A is a carbocyclic group or a heterocyclic group; ring B is a heterocyclic group containing at least one nitrogen atom; R is a hydrogen atom, a substitutent, etc.; n is 0, or an integer of from 1 to 10, a salt thereof, a solvate thereof, or an N-oxide thereof, or a prodrug thereof. The compound of formula (I), a salt thereof, a solvate thereof, or an N-oxide thereof, or a prodrug thereof has an inhibitory activity against cysteine protease, and it is useful for the prophylaxis and/or treatment of a cysteine protease-related disease such as osteoporosis, etc.

Abstract: It is intended to provide highly safe and efficacious blood flow promoters for cauda equina tissues. Among prostaglandin-like compounds having a weak hypotensive effect, compounds having an effect of promoting the blood flow in cauda equina tissues (excluding limaprost) are useful as highly safe blood flow promoters for cauda equina tissues and, therefore, are efficacious in preventing and/or treating lumbar pain, lower limb pain, lower limb palsy, intermittent claudication, vesicorectal failure, hypogonadism, etc. caused by cauda equina injuries.

Abstract: The compound represented by formula (I) (wherein ringA is cyclic group which may have a substituent(s), Q is alkyl which may have a substituent(s) or cyclic ring which may have a substituent(s), ringD is cyclic ring which may have a substituent(s), W is a single bond or a spacer of which main chain has an atom number of 1-4, Y is a spacer of which main chain has an atom number of 1-4.), a salt thereof, an N-oxide thereof or a solvate thereof, or a prodrug thereof Since the compounds represented by formula (I), a salt thereof, an N-oxide thereof or a solvate thereof, or a prodrug thereof have the affinity to MBR, they are useful for the prevention and/or treatment for disease caused by stress.

Abstract: The compound represented by the general formula (I): wherein, a fused ring AB represents a 5- to 10-membered fused heterocyclic ring; R1 represents (1) a hydrogen atom, (2) a halogen atom, (3) a cyano group, (4) an oxo group, (5) an optionally protected hydroxyl group, (6) an optionally protected carboxyl group, (7) an optionally protected amino group, (8) a cyclic group which may have a substituent (s), (9) an aliphatic hydrocarbon group which may have a substituent (s), or (10) an optionally protected thiol group; n represents 0 or an integer of 1 to 8; provided that n represents an integer of not less than 2, plural R1 are the same or different; a salt thereof, a solvate thereof or a prodrug thereof has a kinase (especially c-Jun N-terminal kinase) inhibitory activity and an inhibitory activity of a function of AP-1 as a transcription factor, it is useful as a preventive and/or therapeutic agent for a for example, a diabetes of metabolic disease, etc., a rheumatoid arthritis of inflammatory, etc.

Abstract: An oxadiazole derivative of formula (I) and a non-toxic salt thereof, wherein R is hydrogen, alkyl, CycA, etc.; AA1 is a single bond, amino acid residue, etc.; AA2 is a single bond, amino acid residue, etc.; R7 and R8 are hydrogen, alkyl, etc.; R9 is hydrogen, alkyl, etc.; R10 is hydrogen, alkyl, etc.). The compound of formula (I) has an inhibitory activity against cysteine protease and therefore it is useful as an agent for the prophylaxis and/or treatment of inflammatory diseases, diseases induced by apoptosis, diseases induced by disorders of immune responses, autoimmune diseases, diseases induced by decomposition of proteins which compose organism, shock, circulatory system disorders, blood coagulation system disorders, malignant tumors, acquired immune deficiency syndrome (AIDS) and AIDS-related complex (ARC), parasitic diseases, nerve degeneration diseases, pulmonary disorders, bone resorption diseases, endocrinesthenia, etc.

Abstract: An oxadiazole derivative of formula (I) and a non-toxic salt thereof, wherein R is hydrogen, alkyl, CycA, etc.; AA1 is a single bond, amino acid residue, etc.; AA2 is a single bond, amino acid residue, etc.; R7 and R8 are hydrogen, alkyl, etc.; R9 is hydrogen, alkyl, etc. R10 is hydrogen, alkyl, etc.).

Abstract: The present invention relates to the compound represented by formula (I) A—X—Y-Z-B??(I) (wherein A is a cyclic group which may have a substituent(s); X is a single bond or a spacer; Y is a single bond or a spacer; Z is a single bond or a spacer; B is a hydrocarbon group which may have a substituent(s) or a cyclic group which may have a substituent(s)), a salt thereof, a solvate thereof or a prodrug thereof. The compound represented by formula (I), a salt thereof, a solvate thereof or a prodrug thereof is useful for preventive and/or therapeutic agent for a disease caused by stress.

Abstract: The present invention relates to a diketohydrazine derivative of formula (I) and a pharmaceutically acceptable salt thereof (the symbols in the formula have the same meaning as described in the specification). The compound of formula (I) has an inhibitory activity against cysteine protease, and it is useful for the treatment of inflammatory diseases, immune diseases, ischemic diseases, respiratory diseases, circulatory diseases, blood diseases, neuronal diseases, hepatic or biliary diseases, osseous or articular diseases, metabolic diseases, etc. And the compound has inhibitory activity against elastase and it is also useful for the treatment of COPD (chronic obstacle pulmonary diseases).

Abstract: A benzene-fused heteroring derivative of formula (I) wherein all symbols are the same as described in the specification, and a non-toxic salt thereof. The compound of formula (I) has an inhibitory activity against cysteine protease and therefore it is useful as an agent for the prophylaxis and/or treatment of immune diseases (autoimmune diseases, infectious diseases, etc.), inflammatory diseases (inflammatory bowel diseases, multiple cerebrosclerosis, arthritis, etc.), nerve degeneration diseases (Alzheimer's disease, muscular dystrophy, etc.), bone resorption diseases (osteoporosis, etc.), respiratory system diseases, diabetes, shock, etc.