摘要:
A new process for the stabilization of bacampicillin hydrochloride against degradation by humidity characterized by the incorporation of between 3 to 9% by weight of straight-chain alkanes, alkenes, fatty acids, alcohols, and esters of fatty acids and alcohols with molecular weights between 144 and 350, which may be carried out in one step together with wetmassing for granulation.
摘要:
3-Tertiary ammoniomethyl-7-beta-[alpha-(hydroxy or protected hydroxy)imino-alpha-(2-aminothiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid, pharmaceutically acceptable salt or 4-carboxy ester is provided which is a broad spectrum antibiotic.
摘要:
Beta-lactamase inhibitors which are 6-alpha- and 6-beta-(aminomethyl) and (1-aminoethyl)pencillanic acid 1,1-dioxides; pharmaceutically-acceptable salts thereof; conventional esters thereof which are hydrolyzable in vivo; bis-methanediol esters thereof; or mixed methanediol esters with said beta-lactamase inhibitors and sulbactam. Pharmaceutical compositions comprising said beta-lactamase inhibitors and a conventional beta-lactam antibiotic, used in the treatment of bacterial infections. Compounds useful as intermediates in the synthesis of said beta-lactamase inhibitors. Antibacterial mixed bis-methanediol esters of said aminoalkyl penicillanic acid 1,1-dioxides and ampicillin or amoxicillin, also used in the treatment of bacterial infections; and intermediates therefor.
摘要:
A method is disclosed for the preparation of a class of dehydropenicillins by irradiating substituted 4-acylmethylthio-2-azetidinones and subsequently subjecting the as-obtained product to cyclization. Processing conditions and analytical data are reported.
摘要:
Disclosed are 6-substituted amino-2-substituted-pen-2-em-3-carboxylic acids of the following structure: ##STR1## wherein R.sup.1 is hydrogen or acyl, R.sup.2 is hydrogen or methoxyl, and R.sup.3 is, inter alia, hydrogen, --R, --OR, --SR, --NR.sub.2 ; R is alkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl; n is 0 or 1; when n=1, R.sup.3 is not --SR. Such compounds and their pharmaceutically acceptable salt, and ester derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
6-AMINOPENICILLANIC ACID DERIVATIVES CHARACTERIZED BY THE GENERAL FORMULA ##STR1## wherein R = H, alkoxy group of normal and iso-structure having 1 to 4 carbon atoms, ##STR2## wherein n = 4, 3, 2, R.sub.1 is lower alkyl, aryl, halogen, NH.sub.2, NO.sub.2, OH, are prepared by acylating 6-aminopenicillanic acid with an acylating agent of the formula ##STR3## wherein R and X have the above-mentioned significance.
摘要:
A class of substituted aminocycloalkyl esters of penicillins have improved pharmacokinetic properties and are hydrolysed to the antibacterially active penicillin.
摘要:
Antibacterial 6-acylamido-2,2-dimethyl-3-(pyrimidin-4,6-dione-2-yl)penams, intermediates therefor, including 6-amino-2,2-dimethyl-3-(pyrimidin-4,6-dione-2-yl)penam, and processes for their preparation.
摘要:
Acylaminopenicillanic acids of the general formula ##STR1## in which A represents phenyl which may be substituted, an aromatic monocyclic heterocycle which may be substituted or dihydrophenyl, and X represents one of the groups --SO.sub.2 --, --CO--, --P(R)-- or --P(O)(R)-- in which R represents low molecular weight alkyl, alkenyl, alkoxy, aralkyl, aralkoxy, aryl or aryloxy which may be substituted, non-toxic salts of these compounds and pharmaceutical compositions containing these compounds.