|
Match
|
Document |
Document Title |
|
|
4521533 |
Salts of 6-alpha-(aminomethyl)penicillanic acid 1,1-dioxide esters and beta-lactam antibiotics
Salts of readily hydrolyzable esters of 6-alpha-(aminomethyl)penicillanic acid 1,1-dioxide and (a) prodrug forms of ampicillin and amoxicillin or (b) ampicillin and amoxicillin and a dibasic acid...
|
|
|
4439363 |
Acetylmethyl ester of hetacyllin and/or salts of this ester
The acetylmethyl ester of hetacyllin and/or its salts of an organic or inorganic acid are described and methods for their synthesis wherein a tertiary amine and chloroacetone are introduced to...
|
|
|
4381307 |
Soft tertiary amine esters of bio-affecting carboxylic acids
Novel derivatives of known bio-affecting carboxylic acids R-COOH are disclosed, said derivatives having the structural formula ##STR1## wherein Y and Y' are each H or C 1 -C 4 alkyl; n is 0 or 1;...
|
|
|
4381263 |
Process for the preparation of penicillanic acid esters
A process for the preparation of chloromethyl esters of penicillanic acids, using iodochloromethane or bromochloromethane and a tetraalkylammonium salt of the penicillanic acid, and their use in...
|
|
|
4353825 |
5,6-Dehydropenicillins
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...
|
|
|
4288366 |
Method of preparation of 5,6-dehydropenicillins
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...
|
|
|
4217274 |
Methoxyethoxymethyl esters of penicillins
β-Methoxyethoxymethyl esters of cephalosporins and penicillins are exemplified by such esters of hetacillin and heta-amoxicillin were synthesized and found to exhibit advantageous biological...
|
|
|
4206218 |
Phthalidyl esters of the acetone adduct of epicillin
Penicillin esters and their acid addition salts of the formula ##STR1## wherein X is hydrogen, methyl, methoxy, chloro, or bromo and n is an integer from 1 to 3 provided that n is 2 or 3 only when...
|
|
|
4185015 |
Methoxymethyl 6-[D-2,2-dimethyl-4-(4-hydroxyphenyl)-5-oxo-1-imidazolyl]penicillanate
There is disclosed a process for preparing methoxymethyl 6-aminopenicillanate, its conversion to methoxymethyl amoxicillin and the use of the latter compound as an intermediate in the preparation...
|
|
|
4133807 |
4-Thioxo-2-azetidinones
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...
|
|
|
4070477 |
2-Penem compounds
The invention relates to 6-amino-2-penem-3-carboxylic acid compounds of the formula ##STR1## in which R 1 a denotes hydrogen or an amino protective group R 1 A and R 1 b represents hydrogen or...
|
|
|
4062842 |
Method for preparing 7-substituted cephalosporins and 6-substituted penicillins by replacement of sulfur-containing groups
Disclosed is a method for replacing 7-lower alkylthio and 7-arylthio groups from cephalosporins with lower alkanoyloxy,lower alkoxy, aryloxy, aroyloxy, amino, lower alkylamino and azido moieties,...
|
|
|
4036829 |
Lactonyl esters of penicillins
Lactonyl esters of Penicillins of the formula ##STR1## WHEREIN R 1 is an antibacterially active penicillin-completing side chain; R is hydrogen, methyl or phenyl; and Ra, Rb, Rc, Rd are hydrogen,...
|
|
|
4035381 |
Antibacterial agents
The alkali metal salts of the reaction products of ampicillin or amoxicillin with 5-formyl-2-furansulfonic acid are found to be stable, useful water-soluble forms of the penicillin antibiotics...
|
|
|
4029805 |
Semisynthetic penicillins
Compounds represented by the formula ##STR1## wherein A is ##STR2## R is hydrogen, substituted or unsubstituted lower alkenyl or alkyl of 1 to 8 carbon atoms in the alkyl chain, phenyl or...
|
|
|
3996236 |
Methoxymethyl D-6-(2,2-dimethyl-5-oxo-4-phenyl-1-imidazolidinyl)penicillanate
The specification discloses a process for preparing methoxymethyl D-6-(2,2-dimethyl-5-oxo-4-phenyl-1-imidazolidinyl)penicillan
ate and the use of this compound as a well absorbed antibacterial...
|
|
|
3978078 |
Process for the preparation of ampicillin
Ampicillin is prepared by reacting an inorganic or organic base with a new penicillin G derivative of the formula: ##EQU1## (wherein R 1 represents a group protecting the carboxy radical and R 2 ...
|
|
|
3954735 |
Derivatives of α-aminobenzylpenicillin
The invention relates to a series of new compounds, to salts of these compounds and to methods for the preparation of the compounds. The new compounds have the general formula: ##EQU1## in which n...
|
|
|
3937699 |
6-(1'-Cyclohexenylglycinamido)penicillanic acid and salts thereof
6-(1'-CYCLOHEXENYLGLYCINAMIDO)PENICILLANIC ACID AND SALTS THEREOF, WHICH HAVE BOTH A BROAD SPECTRUM ANTIBACTERIAL ACTION AND STRONG ACTIVITY AGAINST Escherichia coli.
|
|
|
3897445 |
5-EPI-penicillins
5-Epi-penicillin esters and acids, the acids being useful as inhibitors of β-lactamase type enzymes, a process for preparing such compounds by reacting an ester of a...
|
|
|
3714146 |
NOVEL SYNTHESES OF CEPHALEXIN AND INTERMEDIATES THEREFOR
The antibacterial agent cephalexin is prepared from readily available hetacillin by the consecutive steps of nitrosation or formylation to give N-nitroso- or N-formyl-hetacillin, oxidation as with...
|
|
|
3691188 |
METHOD FOR PREPARING PENICILLIN SULFOXIDES
6-Aminopenicillanic acid, 6-acylaminopenicillanic acids, 2-alkanoyloxymethyl-2-methyl-6-acylaminopenam-3-carboxylic acids and the esters thereof are oxidized to the corresponding penicillin...
|
|
|
3544581 |
PRODUCTION OF 6-AMINO-PENICILLANIC ACID SULFOXIDE
|
|
|
3517023 |
DERIVATIVES OF ALPHA-AMINOBENZYLPENICILLIN
|
|
|
3487079 |
CERTAIN ALPHA-AMINO BICYCLIC BETA-LACTAM CARBOXYLIC ACIDS
|
|
|
3347851 |
Derivatives of 6-aminopenicillanic acid
|
|
|
3311638 |
Anhydropenicillins
|
|
|
3240786 |
Imides of 6-aminopenicillanic acid
|
|
|
3213102 |
6-imidopenicillanic acids
|
|
|
3198804 |
alpha-aminomethylpenicillin derivatives
|
|
|
3780028 |
Title is not available
|
|
|
3720666 |
Title is not available
|
|
|
3679663 |
Title is not available
|
|
|
3652547 |
Title is not available
|
|
|
3635953 |
Title is not available
|