摘要:
An optical isomer having an optical rotation degree of (+) from among (.+-.)-.alpha.-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid-3-(1-benzyl-3-piperidyl) ester-5-methyl ester, the hydrochloride of which has melting points ranging from 196.degree. to 202.degree. C.; or a salt thereof is described as being suitable for use in a pharmaceutical composition having hypotensive activity.
摘要:
A 2-azetidinone of formula (I): ##STR1## wherein R.sub.1 represents an aralkoxy, acyloxy, sulphonyloxy or amino group any of which may be substituted, or hydrogen, hydroxy, alkoxy or azido;R.sub.2 represents an alkyl or aralkyl group either of which may be substituted, or hydrogen;R.sub.3 represents an alkyl, aryl, aralkyl, alkenyl, aralkenyl, alkynyl, aralkynyl, acyl or heterocyclic group any of groups may be substituted;andR.sub.4 represents an alkyl, alkenyl, aryl or aralkyl group any of which may be substituted;or formula (I'): ##STR2## wherein R.sub.1 ' is the same as R.sub.1 above;R.sub.2 ' represents an alkyl, aralkyl or trialkylsilyl group any of which may be substituted, or hydrogen;R.sub.3 ' is the same as R.sub.3 above;andR.sub.4 ' represents an alkyl, aralkyl or trialkylsilyl group any of which may be substituted, or hydrogen; provided that when R.sub.1 ' represents azido or optionally substituted amino, R.sub.2 ' represents hydrogen or CH.sub.2 CCl.sub.3 and R.sub.4 ' represents ##STR3## R.sub.3 ' represents other than ##STR4## or a pharmaceutically acceptable salt thereof is disclosed. The derivatives exhibit .beta.-lactamase inhibiting activity and are thus of interest as anti-bacterial agents, used alone or together with known antibiotic subtances.
摘要:
The present invention relates to a novel compound represented by the general formula: ##STR1## wherein Ar represents a naphthyl, phenyl or substituted phenyl group, Q represents ##STR2## wherein R.sub.1 represents a hydrogen atom, or an alkyl, alkanoyl or alkoxycarbonyl group, R represents a hydrogen atom or an alkyl group, and Z represents a substituted benzimidazolinyl group; the broken line in piperidine ring means that 3,4-positions in the piperidine ring are saturated or form a double bond. Said compound and the pharmaceutically acceptable acid addition salts thereof have a hypotensive action and therefore are useful as medicine.
摘要:
A new piperidine derivative represented by the formula: ##STR1## wherein X is oxygen, sulfur, carbonyl, hydroxymethylene or methylene; R.sub.1 is straight-chain alkylene having 1-4 carbon atoms with or without lower alkyl substituent(s); (A).sub.m and R.sub.2 are usually used substituents; and Y is a monovalent group or a divalent group and is one of the following three groups: ##STR2## wherein when p is 0, B is --N.dbd.N--, ##STR3## and when p is 1, B is ##STR4## wherein (R.sub.3).sub.n is a usually used substituent, has hypotensive activity.
摘要:
Compounds having coronary and vasodilator effects, a hypotensive effect, and useful as antianginal drugs and drugs for treating hypertension are represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different groups and each represents a lower alkyl group, one of R.sub.3 and R.sub.4 represents a lower alkyl group and the other represents a group of the general formula: ##STR2## wherein R.sub.5 represents an aralkyl group or an acyl group and n represents 0 or an integer of 1-3; the pharmaceutically acceptable acid addition salts thereof are also effective therapeutic compounds.
摘要翻译:具有冠状血管扩张剂作用,降压作用,作为抗血管药物和用于治疗高血压的药物有用的化合物由以下通式表示:其中R1和R2是相同或不同的基团,并且各自表示低级烷基, R 3和R 4之一表示低级烷基,另一个表示以下通式的基团:其中R 5表示芳烷基或酰基,n表示0或1-3的整数; 其药学上可接受的酸加成盐也是有效的治疗化合物。
摘要:
This invention relates to certain derivatives of phenylalanine having interesting pharmaceutical properties, in particular, a lipid-lowering activity.
摘要:
A new piperidine derivative represented by the formula: ##STR1## wherein X is oxygen, sulfur, carbonyl, hydroxymethylene or methylene; R is straight-chain alkylene having 1-4 carbon atoms with or without lower alkyl substituent(s); m and n are 0 or 1, and are different from each other (i.e., both m and n are not 0 or 1); and (D).sub.m', R.sup.1 and (R.sup.2)n' are usually used as substituents, has a hypotensive activity.