摘要:
The present invention relates to cephalosporin derivatives having &bgr;-lactamase inhibitory activity. The compounds are useful in preventing or treating bacterial resistance to an antibiotic, e.g. a &bgr;-lactam antibiotic. Disclosed herein are compounds that are inhibitors of class B metallo-&bgr;-lactamases, as well as class A, C, and D serine &bgr;-lactamases. In some preferred embodiments, the compounds are 3′-thiobenzoate derivatives of a cephalosporin. Pharmaceutical compositions, methods, uses, kits and commercial packages comprising the compounds are also disclosed.
摘要:
Antibacterial agents have the formula (Ia) or are pharmaceutically acceptable salts or in vivo hydrolysable esters thereof: wherein R¹ is an acyl group, in particular that of an antibacterially active cephalosporin; R² is hydrogen, methoxy, or formamido; Y is S, SO, SO₂, O or CH₂; X is oxygen, sulphur, or -NH- and R⁴ is a group of the formula CO Z R⁵ wherein Z is -CH=CH-, -(CH₂)n- or -NH-; n is 0, 1 or 2; and R⁵ is: wherein R⁶ and R⁷ are the same or different, each representing hydroxy or protected hydroxy and R⁸ is hydroxy, amino, halogen or carboxy. The use of the compounds of formula (Ia) and intermediates for their preparation are also disclosed.
摘要翻译:抗菌剂具有式(Ia)或其药学上可接受的盐或体内可水解的酯:其中R 1是酰基,特别是抗菌活性头孢菌素的酰基; R 2是氢,甲氧基或甲酰氨基; Y是S,SO,SO2,O或CH2; X是氧,硫或-NH-,R 4是式CO Z R 5的基团,其中Z是-CH = CH-, - (CH 2)n - 或-NH-; n为0,1或2; 并且R 5为:其中R 6和R 7相同或不同,各自表示羟基或被保护的羟基,R 8是羟基,氨基,卤素或羧基。 还公开了式(Ia)化合物和中间体用于制备的用途。
摘要:
This invention encompasses 7-(S)-acylamino-3-acetoxymethyl-3-cephem-4-carboxylic acid sulfones and the epimerization process for making them. The epimerization process empolys an organic nitrogen base reagent having a pKa between about 9.0 to about 11.5. The compounds of this invention are intermediates in the synthesis of 1-oxa-β-lactam antibiotics.
摘要:
Novel cephalosporin compounds are described which are characterised by having a phenoxyacetoxymethyl group at the 3-position. The new compounds are particularly useful intermediates in the synthesis of cephalosporin antibiotics having a 3-methyl group carrying the residue of a nucleophile.
摘要:
Beschrieben werden Acylderivate der allgemeinen Formel in der R¹ einen substituierten N-Heterocyclus der Formeln bedeutet, worin R¹⁰ eine der Gruppen und Q eine substituierte Chinolinyl- oder Naphthyridinylgruppe darstellt, wobei der N-Heterocyclus gegebenenfalls durch eine oder mehrere niedere Alkylgruppen substituiert sein kann; und worin ferner R² Wasserstoff, niederes Alkoxy, niederes Alkylthio oder niederes Alkanoylamino, R³ eine Acylgruppe, m 0, 1 oder 2 und A ein pharmazeutisch verträgliches Anion darstellt, sowie leicht hydrolysierbare Ester und pharmazeutisch verträgliche Salze dieser Verbindungen und Hydrate der Verbindungen der Formel I bzw. von deren Estern und Salzen sowie ein Verfahren zu deren Herstellung und pharmazeutische Präparate, welche diese Verbindung enthalten, ferner auch Zwischenprodukte zur Herstellung dieser Verbindungen, weiter die Verwendung der Verbindungen bei der Bekämpfung von Krankheiten und bei der Herstellung der erwähnten Präparate. Die Produkte sind antibiotisch wirksam.
摘要:
A method for producing 3-(3-oxobutyryloxymethyl)-3-cephem-4-carboxylic acids which are antibiotics or intermediates for the synthesis of antibiotics, at a low temperature in a very short period of time and besides in good yield, characterized by reacting a 3-hydroxylmethyl-3-cephem-4-carboxylic acid with diketene in the presence of a 4-(tertiary-amino)pyridine and if necessary, when a 7-acylamino-3-(3-oxobutyryloxymethyl)-3-cephem-4-carboxylic acid is obtained, subjecting it to deacylation at the 7-position thereof.
摘要:
Cephalosporin derivatives, useful as antibiotics, have the general formula (I) wherein R' is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a pharmaceutically acceptable cation and -CH 2 CH 2 COOR' or -CH(CH 3 ) 2 wherein R' is as defined above.
摘要翻译:可用作抗生素的头孢菌素衍生物具有通式(I)其中R min是氢原子,具有1至4个碳原子的烷基或药学上可接受的阳离子,R是-CH 2 COOR min,-CH 2 CH 2 S R min, -CH 2 CH 2 COOR min或-CH(CH 3)2,其中R min如上所定义。