Abstract: The present invention relates to a compound having a highly selective Rho-kinase inhibiting activity and being useful as a therapeutic agent for a disease such as hypertension, pulmonary hypertension, cerebral vasospasm, cardiac angina, cardiac failure, arteriosclerosis, glaucoma, dysuria, asthma, or erectile dysfunction, and a drug containing the compound. Provided is a homopiperazine derivative represented by General Formula (1), an acid addition salt thereof, or a solvate of the derivative or the salt: (wherein R1 represents an amino acid residue; R2 represents a hydrogen atom or an alkyl group; R3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, a halogen atom, a nitrile group, or a hydroxyl group; and R4 represents a hydrogen atom, a halogen atom, or a hydroxyl group).

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl, group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl, group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (substituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: A phenylpyridazine derivative represented by the formula (1): Wherein, R1, R2, R3, X, Y, Z and n have the same meaning as defined in the specification; or a salt thereof, or a medicine containing the compound. The present invention provides water-soluble phenylpyridazine derivatives and medicines containing them, which have excellent inhibitory activity against interleukin-? production, high water solubility and high oral absorbability.

Abstract: The present invention relates to compounds which have a potent Rho-kinase inhibitory action and which are useful as therapeutic agents for treating diseases, such as hypertension, pulmonary hypertension, cerebral vasospasm, angina pectoris, cardiac failure, arteriosclerosis, glaucoma, dysuria, asthma, and erectile failure, and drugs containing the compounds. The present invention provides a 4-haloisoquinoline derivative represented by formula (1): an acid-added salt thereof, or a solvate of any of the foregoing, in which X is halogen, such as fluoro, chloro, bromo and iodo.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: A phenylpyridazine derivative represented by the formula (1): Wherein, R1, R2, R3, X, Y, Z and n have the same meaning as defined in the specification; or a salt thereof, or a medicine containing the compound. The present invention provides water-soluble phenylpyridazine derivatives and medicines containing them, which have excellent inhibitory activity against interleukin-? production, high water solubility and high oral absorbability.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): wherein R1 represents a (substituted) aryl group, R2 represents a phenyl group substituted at 4-position by a lower alkoxyl group or a lower alkylthio group, R3 represents a lower alkoxyl group, a halogenated lower alkyl group, a lower cycloalkyl group, a (subsituted) aryl group, a (substituted) aryloxy group, a (substituted) nitrogen-containing heterocyclic ring residue, a (substituted) aminocarbonyl group or a lower alkylcarbonyl group, A represents a single bond, a lower alkylene group or a lower alkenylene group, X represents O or S, and the dashed line indicates that the carbon-carbon bond between the 4-position and the 5-position is a single bond or a double bond, or salts thereof; and also to medicines containing them as effective ingredients.

Abstract: The present invention relates to a method for purifying a calcium ion-binding protein by cation exchange chromatography. The present invention provide a method for isolating and purifying a calcium ion-binding protein in a simple and efficient manner from a liquid sample containing a calcium ion-binding protein and contaminants without any pretreatment such as addition of a chelating agent. More specifically, the present invention relates to a method for purifying a calcium ion-binding protein which comprises contacting said protein with a cation exchange carrier in the presence of calcium ions to let the said protein be adsorbed to the carrier, and after washing, eluting said protein, and to a calcium ion-binding protein having substantially no contaminants obtained by the method of the present invention.

Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represent a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represent a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to medicinal compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.

Abstract: The present invention relates to a method for purifying a calcium ion-binding protein by cation exchange chromatography. The present invention provide a method for isolating and purifying a calcium ion-binding protein in a simple and efficient manner from a liquid sample containing a calcium ion-binding protein and contaminants without any pretreatment such as addition of a chelating agent. More specifically, the present invention relates to a method for purifying a calcium ion-binding protein which comprises contacting said protein with a cation exchange carrier in the presence of calcium ions to let the said protein be adsorbed to the carrier, and after washing, eluting said protein, and to a calcium ion-binding protein having substantially no contaminants obtained by the method of the present invention.

Abstract: Compounds having the formula (1): wherein R1 represents an alkyl or alkenyl group, R2 and R3 each independently represents a hydrogen atom or an alkyl, hydroxyalkyl, dihydroxyalkyl or alkynyl group, or R2 and R3 may be fused together with the adjacent nitrogen atom to form a substituted or unsubstituted, nitrogen-containing, saturated heterocyclic group, X, Y and Z each independently represents a hydrogen atom, an alkyl group, a halogen atom or the like, and n stands for an integer of from 1 to 5; and also to pharmaceutical compositions containing them. These compounds have inhibitory activity against IL-1? production, high water solubility and good oral absorbability.

Abstract: This invention relates to pyridazine derivatives represented by the formula (1): 1

Abstract: Objects of the invention are to provide compounds having excellent activity against interleukin-1&bgr; production and also medicines comprising them as effective ingredients. Pyridazin-3-one derivatives represented by the following formula (1): wherein Ar1 represents a substituted or unsubstituted aromatic group, Ar2 represents a phenyl group having a substituent at least at the 4-position thereof, R1 represents a linear or branched alkyl group, an alkyl group having a cyclic structure, a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenyl(lower alkyl) group, and R2 represents a cyano group, a carboxyl group, a (lower alkoxy)carbonyl group, a substituted or unsubstituted lower alkyl group or a substituted or unsubstituted carbamoyl group, or salts thereof; and medicines comprising them as effective ingredients.