摘要:
The present invention relates to quinazoline-3-alkanoic acid derivatives having both an inhibitory effect on platelet aggregation and a hindering effect on aldose reductase together, represented by a general formula [I] ##STR1## [wherein R is hydrogen or a protecting group for carboxyl group, R.sup.1 is a lower alkyl group, alkenyl group, alkinyl group, lower alkoxy group, lower alkylthio group, halogen, phenyl group (this phenyl group may be substituted by one to three of lower alkyls, lower alkoxys, halogens, trifluoromethyls, carboxyethylenes or ethoxycarbonylethylenes, naphthyl group, heterocycle (this heterocycle may be substituted by one to three of lower alkyls), cycloalkyl group or benzoyl group (this benzoyl group may be substituted by lower alkyl or halogen), R.sup.2 and R.sup.3 are identically or differently hydrogens, halogens, lower alkyl groups, lower alkoxy groups, aralkyl groups which may be substituted, nitro groups, imidazolyl groups, imidazolylmethyl groups or ##STR2## (R.sup.4 and R.sup.5 indicate identically or differently hydrogens or lower alkyl groups, or connected with each other to make five- or six-membered heterocycles which may contain other hetero atom, X is carbonyl, thiocarbonyl or methylene group (this methylene group may be substituted by lower alkyl group), A is lower alkylene or lower alkenylene, and n indicates an integer of 1 to 3],their salts, their preparation processes and medicinal drugs containing them.
摘要:
This invention relates to novel processes for the manufacture of spiro-linked pyrrolidine-2,5-diones of formula; ##STR1## which have a potent inhibitory activity on aldose reductase and are useful for reduction and prevention of chronic diabetic complications.The invented processes are useful as improved and convenient method for a large scale manufacture.
摘要:
An antirheumatoid pharmaceutical composition containing a cyclic anthranilic acid derivative of the following formula, ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, lower alkoxy group having 1 to 3 carbon atoms, amino group, nitro group, hydroxy group, sulfonamide group, trifluoromethyl group, cyano group, carboxyl group, carbamoyl group, acetyl group, benzoylmethyl group which may be substituted, methylthio group, phenylethynyl group which may be substituted, ethynyl group which may be substituted, alkanoylamino group having 1 to 3 carbon atoms, benzoylamino group which may be substituted, alkylsulfonylamino group having 1 to 3 carbon atoms or phenylsulfonylamino group which may be substituted; R.sup.4 and R.sup.5 each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, cyano group, carboxyl group, hydroxymethyl group, phenyl group which may be substituted or benzyl group; R.sup.6 indicates a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms or benzyl group; X is oxygen, sulfur, SO or SO.sub.2 ; the acid or alkali salts thereof and an inert, pharmaceutically acceptable carrier.
摘要:
The invention provides a novel spiro-linked pyrrolidine-2,5-dione of the formula; ##STR1## wherein X.sub.1 and X.sub.2 each independently represent a hydrogen, a halogen atom, a lower alkyl or lower alkoxy group; Y is a methylene group, oxygen or sulfur atom; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently represent a hydrogen atom, a lower alkyl group or forming a benzene ring together with their adjacent carbon atoms; the base salts thereof with pharmaceutically acceptable cations, and processes for their manufactures.The compounds of formula [I] useful as aldose reductase inhibitors and as therapeutic agents for treatment of chronic diabetic complications are also disclosed.
摘要:
An antirheumatoid pharmaceutical composition containing a cyclic anthranilic acid derivative of the following formula, ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, lower alkoxy group having 1 to 3 carbon atoms, amino group, nitro group, hydroxy group, sulfonamide group, trifluoromethyl group, cyano group, carboxyl group, carbamoyl group, acetyl group, benzoylmethyl group which may be substituted, methylthio group, phenylethynyl group which may be substituted, ethynyl group which may be substituted, alkanoylamino group having 1 to 3 carbon atoms, benzoylamino group which may be substituted, alkylsulfonylamino group having 1 to 3 carbon atoms or phenylsulfonylamino group which may be substituted; R.sup.4 and R.sup.5 each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, cyano group, carboxyl group, hydroxymethyl group, phenyl group which may be substituted or benzyl group; R.sup.6 indicates a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms or benzyl group; X indicates a methylene group; their acid or alkali salts and an inert, pharmaceutically acceptable carrier.
摘要:
This invention relates to novel processes for the manufacture of spiro-linked pyrrolidine-2,5-diones of the formula; ##STR1## which have a potent inhibitory activity on aldose reductase and are useful for reduction and prevention of chronic diabetic complications.The invented processes are useful as improved and convenient method for a large scale manufacture.
摘要:
The invention provides novel substituted benzylthiazolidine-2,4-dione derivatives which increase the transactivation of receptor as a ligand of human peroxisome proliferator-activated receptor (PPAR) and exhibit the blood glucose-decreasing action and lipid-decreasing action, and a process for preparing them. The invention relates to substituted benzylthiazolidine-2,4-dione derivatives represented by the general formula (1) [wherein A denotes a pyridyl group or cyclohexyl group], their medicinally acceptable salts, their hydrates and a process for preparing them.
摘要:
An antirheumatoid pharmaceutical composition containing a cyclic anthranilic acid derivative of the following formula, ##STR1## wherein R.sup.1, and R.sup.2 and R.sup.3 each independently indicate a hydrogen atom, halogen atom, lower alkyl group having 1 to 3 carbon atoms, lower alkoxy group having 1 to 3 carbon atoms, amino group, nitro group, hydroxy group, sulfonamide group, trifluoromethyl group, cyano group, carboxyl group, carbamoyl group, acetyl group, benzoylmethyl group which may be substituted, methylthio group, phenylethynyl group which may be substituted, ethynyl group which may be substituted, alkanoylamino group having 1 to 3 carbon atoms, benzoylamino group which may be substituted, alkylsulfonylamino group having 1 to 3 carbon atoms or phenylsulfonylamino group which may be substituted; R.sup.4 and R.sup.5 each independently indicate a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms, cyano group, carboxyl group, hydroxymethyl group, phenyl group which may be substituted or benzyl group; R.sup.6 indicates a hydrogen atom, lower alkyl group having 1 to 3 carbon atoms or benzyl group; X is a methylene; the acid or alkali salts thereof and an insert, pharamaceutically acceptable carrier.