Matches 701 - 750 out of 758 < 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >
Match Document Document Title
3862164 THIAZOLIDINE AZETIDINONES  
Novel 2-substituted thiazoline azetidinones are obtained from 2,6-disubstituted thiazoline azetidinones by ozonolysis and solvolysis. Reduction of the 2-substituted thiazoline azetidinones by...
3859282 PROCESS FOR PREPARING 3-SUBSTITUTED METHYL-7-ACYLAMIDO-7-METHOXY-2-CEPHEM-4-CARBOXYLIC ACID AND ITS ESTERS  
Process for preparing an ester of 3-substituted methyl-7-acylamido-7-methoxy(or hydrogen)-2-cephem-4-carboxylic acid and its corresponding sulfoxide by treating an ester of 3-carbamoyloxymethyl(or...
3853860 3-PHOSPHORANYLIDENE ETHYL CEPHALOSPORINS  
A new group of cephalosporin compounds characterized by possessing as 3-position substituent a phosphoranylidene ethyl group. The new compounds can be used as intermediates in the production of...
3852277 3-[(α-METHOXY-4-SUBSTITUTED CINNAMOYL)OXYMETHYL]-7-ACYLAMIDOCEPH-3-EM-4-CARBOXYLIC ACIDS  
3-[(α-Methoxy-4-substituted cinnamoyl)oxymethyl]-7-acylamidoceph-3-em-4-carboxylic acid esters are prepared by treating the 3-[(α-methoxy-4-substituted...
3792995 PROCESS FOR PRODUCING CEPHALOSPORIN DERIVATIVES  
Process for producing 3-ezomethylene cephalosporins by electrolytically reducing 7-amino- or 7-acylamino-3-(substituted methyl)-3-cephem derivatives.
3719672 4-SUBSTITUTED METHYLENE-7-AMINO-8-OXO-5-THIA-1-AZA-BICYCLO[4,2,0] OCT-2-ENE-2-CARBOXYLIC ACIDS  
7-amino-4-methylene-8-oxo-5-thia-1-azabicyclo[4,2,0]oct-2-en e-2-carboxylic acid compounds, in which the 4-methylene group is substituted and the 7-amino group may be acylated exhibit antibacterial...
3674784 3-FORMYL CEPHALOSPORIN SULFOXIDES  
3-Formyl cephalosporin sulfoxide esters which are useful as intermediates in the preparation of new cephalosporin antibiotics.
3658649 CEPHALOSPORIN DERIVATIVES  
A process is disclosed for the preparation of a 7β-(4-carboxybutanamide) ceph-3-3em-4-carboxylic acid or a 7β-(5-carboxy-5-oxopentamido) ceph-3-em-4-carboxylic acid by subjecting a...
3627760 7-(HETEROCYCLYLMERCAPTOACETYLAMINO)-CEPHALOSPORAMIC ACIDS  
7-(Heterocyclyl-mercaptoacetylamino)-cephalosporanic acids. Use: antibiotics.
3536698 SIMPLIFIED METHOD FOR ESTERIFICATION OF ANTIBIOTICS VIA CARBONATE ANHYDRIDE INTERMEDIATES  
3502665 PREPARATION OF 7-ACYLAMIDO DERIVATIVES OF 7-AMINOCEPHALOSPORANIC ACID AND RELATED COMPOUNDS  
3499893 PYRIMIDINYL- OR DIAZEPINYLTHIOACETAMIDOCEPHALOSPORANIC ACIDS  
3468874 6 - TETRAZOLYLACETAMIDO PENICILLANIC AND 7-TETRAZOLYLACETAMIDO CEPHALOSPORANIC ACIDS  
3449336 PROCESS FOR PREPARING NOVEL INTERMEDIATES USEFUL FOR PREPARING 7-AMINO-CEPHALOSPORANIC ACID AND DERIVATIVES THEREOF  
3445463 3-(CYCLIC ACYL)OXYMETHYL CEPHALOSPORINS  
3382238 Penicillin and cephalosporin derivatives  
3373155 Substituted penicillins and cephalosporins  
3360515 7-(condensed n-containing heterocyclic carbonamido) cephalosporanic acid and derivatives thereof  
3355452 Derivatives of 7-amino-cephalosporanic acid  
3352858 Antibacterial agents of the cephalosporin class  
3338897 7-(alpha-substituted acyl amino) cephalosporanic acid and derivatives thereof  
3338896 7-(substituted propionamido) cephalosporanic acid and derivatives thereof  
3322751 7-(3'-methyl-4'-furazanacetamido)-cephalosporanic acid and 6-(3'-methyl-4'-furazanacetamido) penicillanic acid and related salts and derivatives  
3322749 Derivatives of penicillanic acid and cephalosporanic acid  
3322750 3-substituted-7-(4'-furazanalkanoyl)aminocephalosporanic acids and 3-substituted-6-(4'-furazanalkanoyl)aminopenicillanic acids  
3270009 Carbocyclic-substituted aliphatic cephalosporins  
3268523 Derivatives of cephalosporanic acid  
3228934 Imidazolyl desacetoxy-7-aminocephalo-sporanic acid derivatives  
3226384 Cephalosporin ca derivatives  
3222362 Arylaminoalkyl cephalosporins  
3222363 Carbocycloxyalkyl cephalosporins  
3216999 Carbocyclic cephalosporins  
3188311 Process for the preparation of 7-amino-cephalosporanic acids  
3117126 Derivatives of cephalosporanic acid  
3686172 Title is not available  
3646023 Title is not available  
3778436 Title is not available  
3553203 Title is not available  
3632810 Title is not available  
3833572 Title is not available  
3830700 Title is not available  
3825536 Title is not available  
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3701775 Title is not available  
3708480 Title is not available  
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3767655 Title is not available  
3813385 Title is not available  
3763154 Title is not available  
Matches 701 - 750 out of 758 < 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >