摘要:
A 1,2,4-oxadiazole derivative is represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a lower alkyl or cycloalkyl group, a lower alkyl group substituted with a halogen atom, a lower alkylamino group or a phenyl group; R.sup.2 represents a hydrogen atom, a lower dialkylamino group, a cyclic alkylamino group, a cyclic amino group having an oxygen or nitrogen atom in the ring, a phenyl group which may be substituted with a halogen atom, a pyridyl group, an imidazolyl group, an alkylimidazolyl group, a benzimidazolyl group or a 2-oxopyrrolidinyl group; and n is 1, 2 or 3. The derivative has excellent monoamine oxidase-inhibitory activity and is effective as a medicine for treating Parkinson's disease.
摘要:
The present invention relates to an aldose reductase inhibitor having the following formula: ##STR1## R.sub.1 is a hydrogen atom or --A--COOR.sub.5 (A is an alkylene group having 1 to 4 carbon atoms and R.sub.5 is a hydrogen atom or a lower alkyl group), and R.sub.2, R.sub.3 and R.sub.4 are the same as or different from each other and selected from the group consisting of a hydrogen atom, a hydroxy group, a halogen atom, a carboxyl group, an alkyl group, an amide group, an amino group, an alkoxy group, an aryl group, an aryloxy group, an alkylthio group, an alkylsulfinyl group, an alkylsulfonyl group, a nitro group, --NHCOCOOR.sub.6 (R.sub.6 is a hydrogen atom or a lower alkyl group), a mono- or dialkylaminosulfonyl group, and a residual group having the following formula: ##STR2## (A and R.sub.5 are the same as in the above). The compounds defined in the above are excellent in aldose reductase inhibitory activity and low in toxicity. Therefore, those compounds are useful as a preventive agent and/or a remedy for diabetic complications such as neuropathy, retinopathy, nephropathy, cataracts and keratopathy.
摘要:
The present invention relates to an aldose reductase inhibitor having the following formula: ##STR1## R.sub.1 is a hydrogen atom or --A--COOR.sub.5 (A is an alkylene group having 1 to 4 carbon atoms and R.sub.5 is a hydrogen atom or a lower alkyl group), and R.sub.2, R.sub.3 and R.sub.4 are the same as or different from each other and selected from the group consisting of a hydrogen atom, a hydroxy group, a halogen atom, a carboxyl group, an alkyl group, an amide group, an amino group, an alkoxy group, an aryl group, an aryloxy group, an alkylthio group, an alkylsulfinyl group, an alkylsulfonyl group, a nitro group, --NHCOCOOR.sub.6 (R.sub.6 is a hydrogen atom or a lower alkyl group), a mono- or dialkylaminosulfonyl group, and a residual group having the following formula: ##STR2## (A and R.sub.5 are the same as in the above). The compounds defined in the above are excellent in aldose reductase inhibitory activity and low in toxicity. Therefore, those compounds are useful as a preventive agent and/or a remedy for diabetic complications such as neuropathy, retinopathy, nephropathy, cataracts and keratopathy.
摘要:
A tetrazoleacetic acid derivative represented by the following general formula (I): ##STR1## [in Formula (I), R.sub.1 represents a hydrogen atom or an alkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, an aralkyl group, a halogen atom, a haloalkyl group, a hydroxyl group, an alkoxy group, an alkoxyalkyl group, an amino group, an aryl group, an alkyl or aryl thio group, an alkyl or aryl carbonylamino group, an alkyl or aryl sulfonylamino group, an alkyl or aryl aminosulfonyl group, an alkyl or aryl sulfonyl group or an alkyl or aryl sulfinyl group; and X represents --O-- or --S--] except for [5-(2-thienyl)tetrazol-1-yl] acetic acid, [5-(2-furyl)tetrazol-1-yl] acetic acid and ethyl esters thereof, or a salt thereof shows excellent aldose reductase inhibitory activity, has low toxicity to organisms and is quite effective as an essential component of a preventive medicine and/or remedy for diabetic complications.
摘要:
A tetrazoleacetic acid derivative represented by the following general formula (I): ##STR1## .[.[in Formula (I),.]. .Iadd.wherein .Iaddend.R.sub.1 represents a hydrogen atom or an alkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, an aralkyl group, a halogen atom, a haloalkyl group, a hydroxyl group, an alkoxy group, an alkoxyalkyl group, an amino group, an aryl group, an alkyl or aryl thio group, an alkyl or aryl carbonylamino group, an alkyl or aryl sulfonylamino group, an alkyl or aryl aminosulfonyl group, an alkyl or aryl sulfonyl group or an alkyl or aryl sulfinyl group; and X represents --O-- or --S--.[.].]. except for [5-(2-thienyl)tetrazol-1-yl] acetic acid, [5-(2-furyl)tetrazol-1-yl) acetic acid.Iadd., (5-(5-bromo-2-furyl)tetrazol-1-yl)acetic acid, (5-(5-phenylthio-2-furyl)tetrazol-1-yl)acetic acid, (5-(5-phenylsulfonyl-2-furyl)tetrazol-1-yl)acetic acid .Iaddend.and ethyl esters thereof, or a salt thereof shows excellent aldose reductase inhibitory activity, has low toxicity to organisms and is quite effective as an essential component of a preventative medicine and/or remedy for diabetic complications.
摘要翻译:由下列通式(I)表示的四唑乙酸衍生物:其中R1表示氢原子或烷基;(I) R 2表示氢原子,烷基,芳烷基,卤素原子,卤代烷基,羟基,烷氧基,烷氧基烷基,氨基,芳基,烷基或芳基硫基, 烷基或芳基羰基氨基,烷基或芳基磺酰基氨基,烷基或芳基氨基磺酰基,烷基或芳基磺酰基或烷基或芳基亚磺酰基; 和[5-(2-噻吩基)四唑-1-基]乙酸,[5-(2-呋喃基)四唑-1-基)乙酸](其中X表示-O-或-S- [ (5-(5-溴-2-呋喃基)四唑-1-基)乙酸,(5-(5-苯基硫代-2-呋喃基)四唑-1-基)乙酸(5-(5-苯基磺酰基-2 - 呋喃基)四唑-1-基)乙酸及其乙酯或其盐显示出优异的醛糖还原酶抑制活性,对生物体具有低毒性,并且作为预防药物和/或糖尿病治疗的必需成分是非常有效的 并发症。
摘要:
A tetrazoleacetic acid derivative represented by the following general formula (I): ##STR1## [in Formula (I), R.sub.1 represents a hydrogen atom or a lower alkyl group; R.sub.2, R.sub.3 and R.sub.4 are the same or different from each other and are selected from the group consisting of hydrogen, lower alkyl, halogen, lower haloalkyl, hydroxy and lower alkoxy; and tetrazol group is substituted at 1- or 2-position of naphthyl group] except for [5-(1-naphthyl)tetrazol-1-yl]acetic acid and ethyl ester thereof, or a salt thereof.
摘要:
A tetrazoleacetic acid derivative represented by the following general formula I: ##STR1## wherein in the formula I, R represents a hydrogen atom or a lower alkyl group; A is an alkylene group having 2 to 5 carbon atoms; Ar is selected from the group consisting of a phenyl group, a naphthyl group, a furyl group, a thienyl group, a benzofuryl group, and a benzothienyl group; wherein the Ar may be substituted with a lower alkyl group, a lower alkoxy group, a halogen atom, a lower haloalkyl group, an alkylthio group and an alkylsulfonylamino group shows excellent aldose reductase inhibitory activity, and is quite effective as an essential component of a preventive medicine and/or remedy for diabetic complications.
摘要:
A new compound, 3-(1H-tetrazol-5-yl)oxanilic acid and pharmaceutically acceptable salts thereof are herein disclosed, which can be prepared by reacting 3-(1H-tetrazol-5-yl)aniline with a compound represented by the general formula: A--CO--CO--B (wherein A and B may be identical with or different from one another and represent hydroxyl group, a halogen atom or a lower alkoxy group) and then optionally hydrolyzing the resultant product. The compound presents an excellent histamine and SRS-A release inhibitory effect and is hydrophilic or soluble in water. Therefore, the compound is very suitable to form, in particular, an aqueous pharmaceuticals for treatment or prevention of allergic diseases such as bronchial asthma, rhinitis and conjunctivitis.