摘要:
Novel butadiene derivatives of the formula [I]:
wherein Ring A is tri-lower alkoxyphenyl, R¹ and R² combine each other to form a group of the formula:
〉N-R³
or one of R¹ and R² is lower alkoxy, and the other is group of the formula: -NHR³, in which R³ is hydrogen, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkoxy, substituted or unsubstituted amino, hydroxy or pyridylcarbonyl, or salts thereof. Among the desired butadiene derivatives [I] of the present invention, the 3-butenoic acid-type compounds per se have antithrombotic activity, but they can also be used as an intermediate for preparing the 2,5-pyrrolidinedione-type compounds having excellent antithrombotic activity. And additionally a butenoic acid ester of the formula [II]:
wherein Ring A is a tri-lower alkoxyphenyl group, and one of R¹² and R²² is a lower alkoxy group, and the other is hydroxy group, or a salt thereof, as synthetic intermediate.
摘要:
Novel biphenyl derivatives of the formula: wherein R¹ is a substituted or unsubstituted aminocarbonyl group, aminothiocarbonyl group, a substituted or unsubstituted lower alkoxycarbonyl group, cyano group, or a group of the formula: one or two of R² to R⁷ are hydrogen atom, and the remaining groups are the same or different and are each a lower alkoxy group, a phenyl(lower)alkoxy group or hydroxy group, or the adjacent two groups thereof combine to form a lower alkylenedioxy group, and Alk¹ is a lower alkylene group, or a pharmaceutically acceptable salt thereof, which are useful for the prophylaxis and treatment of hepatic diseases, and processes for preparing the same, and intermediates therefor.
摘要:
Biphenyl derivative of the formula: wherein R¹ is hydrogen atom or a lower alkoxycarbonyl group and R² is a lower alkoxycarbonyl group, or R¹ and R² are combined together to form a group of the formula: each of R³ and R⁴ is a lower alkoxy group; and Ring A is a substituted or unsubstituted sulfur-containing or nitrogen-containing heterocyclic ring, and a pharmaceutically acceptable salt thereof are disclosed. Said biphenyl derivative (I) and its salt have excellent hypolipidemic activity and are useful for treatment or prophylaxis of hyperlipidemia and/or arteriosclerosis.
摘要:
A method for removing tri-substituted silyl group from β-lactam compound having a tri-substituted silyl group-protecting hydroxy group, which comprises treating with an acid and a fluoride selected from alkali metal fluoride, alkaline earth metal fluoride and hydrogenfluoride of organic or inorganic amine, by which the tri-substituted silyl group can be easily and effectively removed under moderate conditions so that the desired compound can be obtained in high yield at low cost.
摘要:
Disclosed are a dicarboxylic acid compound represented by the formula (I):
wherein R represents hydrogen atom, a lower alkyl group, phenyl group or hydroxyl group; R¹ represents a straight or branched alkyl group having 1 to 10 carbon atoms or a lower alkyl group substituted by a group selected from aryl group, a sulfur- or nitrogen-containing heterocyclic monocyclic group and a cycloalkyl group having 4 to 8 carbon atoms; R² represents a substituted or unsubstituted aryl group, a cycloalkyl group having 4 to 8 carbon atoms or a sulfur-containing or nitrogen-containing heterocylcic group; X represents sulfur atom, oxygen atom or a substituted or unsubstituted imino group; Y¹ represents imino group, oxygen atom or sulfur atom and Y² represents nitrogen atom, or Y¹ represents a vinylene group and Y² represents a group: -CH=; m represents 0 to 3; and n represents 0 or 1, an ester thereof or pharmaceutically acceptable salts thereof, and a process for preparing the same.
摘要翻译:公开了由式(I)表示的二羧酸化合物:其中R表示氢原子,低级烷基,苯基或羟基; R 1表示具有1〜10个碳原子的直链或支链烷基或被选自芳基,含硫或含氮杂环单环基团和具有4-8个碳原子的环烷基取代的低级烷基 原子; R 2表示取代或未取代的芳基,具有4-8个碳原子的环烷基或含硫或含氮杂环基; X表示硫原子,氧原子或取代或未取代的亚氨基; Y 1表示亚氨基,氧原子或硫原子,Y 2表示氮原子,或Y 1表示亚乙烯基,Y 2表示-CH =; m表示0〜3; 和n表示0或1,其酯或其药学上可接受的盐及其制备方法。
摘要:
A novel process for preparing a naphthalene derivative of the formula: wherein each of R¹ and R² is a lower alkyl group; one of R³ and R⁴ is hydrogen atom or a lower alkoxy group and the other is a lower alkoxy group; and Ring A is a substituted or unsubstituted benzene ring, or a pharmaceutically acceptable salt thereof is disclosed. Said compound is useful as a hypolipidemic agent.
摘要翻译:一种制备下式的萘衍生物的新方法:其中R 1和R 2各自为低级烷基; R 3和R 4之一是氢原子或低级烷氧基,另一个是低级烷氧基; 环A是取代或未取代的苯环,或其药学上可接受的盐。 所述化合物可用作降血脂药。