摘要:
The present invention provides the compounds of the formula (II): ##STR1## and salts and esters thereof wherein R.sub.1 is a hydrogen atom or an alkyl group of 1-4 carbon atoms and R.sub.2 is a hydrogen atom or an alkyl group of 1-4 carbon atoms or is joined to R.sub.1 to form part of a 5-, 6- or 7 membered carbocyclic ring. These compounds are .beta.-lactamase inhibitors able to enhance the effectiveness of pencillins and cephalosporins. Their preparation and compositions containing them are described.
摘要:
A compound of the formula (I): ##STR1## and pharmaceutically acceptable salts thereof wherein R.sub.1 is hydrogen or C.sub.1-6 alkyl or an acyl group of 1 to 8 carbon atoms; n is 2, 3 or 4; X is halogen; and the OR.sub.1 and HN(CH.sub.2).sub.n X moieties are trans; has anti-hypertensive activity and a low level of cardiac side-effects.
摘要:
Compounds of the formula (I): ##STR1## and pharmaceutically acceptable salts thereof, wherein R.sub.1 is hydrogen or C.sub.1-6 alkyl, and R.sub.2 is hydroxy, C.sub.1-4 alkylsulphonyloxy or p-toluenesulphonyloxy are useful for the prophylaxis and treatment of diseases due to allergic response in mammals. Processes for their preparation are described.
摘要:
Compounds A - B - C wherein A is 2 imidazolinyl or N-alkyl derivative thereof, B is oxygen, sulphur, CR.sup.1 R.sup.2 wherein R.sup.1 and R.sup.2 are hydrogen or alkyl, or NR.sup.3 wherein R.sup.3 is hydrogen or alkyl, and C is a 5 - or 6 - membered carbo- or heterocyclic group having a nitrogen containing substituent and up to two other substituents, are useful in treatment of diarrhoea or scours. Certain compounds A - B - C are novel.
摘要:
The compounds of the formulaes (IV), (V) and (VI): ##STR1## and salts and esters thereof where X is a bromine or chlorine atom, and n is 0 or 1; are antibacterial agents. Their preparation and use is described.
摘要:
A new antibacterially active agent has been isolated from Streptomyces clavuligerus. This new compound which is designated clavulanic acid has the formula (I): ##STR1## In addition to being a broad spectrum antibiotic of medium potency, clavulanic acid and its salts and esters have the ability to enhance the effectiveness of .beta.-lactam antibiotics against many .beta.-lactamase producing bacteria.
摘要:
A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: ##STR1## wherein R is phenyl, 4-hydroxy phenyl, or a 5- or 6-membered heterocyclic ring containing up to three heteroatoms selected from oxygen, sulphur or nitrogen, optionally substituted with hydroxy, amino, halogen or C.sub.1-6 alkoxy;R.sup.1 represents hydrogen or C.sub.1-6 alkyl;R.sup.2 and R.sup.3 are the same or different and represent hydrogen, C.sub.1-6 alkyl, halogen, amino, hydroxy, or C.sub.1-6 alkoxy.Their preparation and use is described.
摘要:
Compounds of the formula (II): ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms, CO.sub.2 R.sub.2 is a carboxyl group, a pharmaceutically acceptable salt thereof or a pharmaceutically acceptable esterified carboxyl group, are useful for their .beta.-lactamase inhibitory activity and to synergize the antibacterial activity of penicillins and cephalosporin.
摘要翻译:式(II)的化合物:其中R 1为氢或1至4个碳原子的烷基,CO 2 R 2为羧基,其药学上可接受的盐或药学上可接受的酯化羧基,可用于它们 β-内酰胺酶抑制活性,并协同青霉素和头孢菌素的抗菌活性。
摘要:
Compounds of the formula (I), or pharmaceutically acceptable salts thereof ##STR1## wherein X is phenyl, optionally substituted by one halogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy; or pyridyl; R.sub.1 is hydrogen or C.sub.1-6 alkyl; and n is 1 to 6, pharmaceutical compositions containing them and a process for their preparation. These compounds are useful in the prophylaxis or treatment of diseases due to a histamine-mediated allergic response.
摘要:
A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: ##STR1## wherein R is phenyl, 4-hydroxyphenyl, or a 5- or 6-membered heterocyclic ring containing up to three heteroatoms selected from oxygen, sulphur or nitrogen, optionally substituted with hydroxy, amino, halogen or C.sub.1-6 alkoxy;R.sup.1 represents hydrogen or C.sub.1-6 alkyl;R.sup.2 and R.sup.3 are the same or different and represent hydrogen, C.sub.1-6 alkyl, halogen, amino, hydroxy, or C.sub.1-6 alkoxy;X represents oxygen or sulphur; andA represents hydrogen, pyridyl, acetoxy, carbamoyloxy or a heterocyclicthio group;Their preparation and use is described.