C07D 501 - Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring

Patents for C07D 501 - Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring (7,574)
12/1976
12/07/1976	US3996208 6-Acylamino-penam-3-carboxylic acids
11/1976
11/30/1976	US3994911 Phosphorylated
11/30/1976	US3994889 3-Heterothio derivatives of (α-thiocarbonylaminol)-7α-methoxy-cephalosporins
11/30/1976	US3994888 Cephalosporin cleavage process
11/30/1976	US3994887 7-(3-Substituted ureido) cephalosporins
11/30/1976	US3994886 7-(3-Substituted ureido) cephalosporins
11/30/1976	US3994885 With alkali metal alkoxide, halogenation
11/30/1976	US3994884 3-Vinyl-7β-(2,2-disubstituted acetamido)-cephalosporins
11/30/1976	US3994883 6- or 7- phosphite amido compounds
11/23/1976	US3993758 Cephalosporin compounds
11/23/1976	US3993646 Process for the ring expansion of penicillins to cephalosporin compounds
11/16/1976	US3992377 3-Thio-substituted cephalosporin antibiotics
11/09/1976	US3991069 Chemical intermediates for production of cephalosporins, penicillins and other antibiotics
11/09/1976	US3991051 Antibiotics
11/02/1976	US3989697 7-Methoxy phenylureidocephalosporins
11/02/1976	US3989696 3-Heterothio[(oxyalkyl)thioacetyl]cephalosporin derivatives
11/02/1976	US3989695 Chemical intermediates
11/02/1976	US3989694 Antibacterial
11/02/1976	US3989693 Antibacterial
11/02/1976	US3989685 Process for making a 2'-halopenicillin
10/1976
10/26/1976	US3988450 Antibacterial
10/26/1976	US3988327 7-(α-SULFOACYLAMIDO)CEPHALOSPORANIC ACIDS
10/26/1976	US3988326 Cephalosporinsand derivatives; a mixed acid anhydride of an alkali metal acid sulfate and a carboxylic acid
10/26/1976	US3988325 7-Carboxy or 2,2,2-trichloroethoxy carbonyl- cephalosporins
10/19/1976	US3987041 P-hydroxymethylphenylacetamidocephalosporins
10/19/1976	US3987040 3-substituted methyl-7-acylamino-7-methoxy-2-cephem-4-carboxylic acid and its esters
10/19/1976	US3987039 Antibacterial
10/12/1976	US3985747 Crystalline sesquihydrate of 7-[D-α-amino-α-(p-hydroxyphenyl)acetamido]-3-(1,2,3-triazol-5-ylthiomethyl)-3-cephem-4-carboxylic acid
10/12/1976	US3985746 7-(α-Cyanomethylthio)acetamido-3-cephem carboxylates
10/12/1976	US3985742 By fermentation or synthetic means
10/12/1976	US3985741 Production of p-hydroxycephalexin
10/12/1976	US3985740 7-[D-(α-amino-α-phenyl-, 2-thienyl- and 3-thienylacetamido)]-3-(5-methylthiazol-2-yl)carbonylthiomethyl-3-cephem-4-carboxylic acids
10/12/1976	US3985739 3-Heterocyclic thiomethylcephalosporins
10/12/1976	US3985738 Antibacterial agents
10/12/1976	US3985737 3-Sulfonate esters of cephalosporin
10/05/1976	US3984404 Acylthiomethyl esters of cephalosporins
10/05/1976	US3984403 Painless intramuscular injection
10/05/1976	US3984401 Process for producing lactol-type cephalosporins
09/1976
09/28/1976	US3983113 Cephalosporin type antibacterials
09/28/1976	US3983109 Process for recovering cephalosporin C from A fermentation broth as the N-(p-nitrobenzoyl) derivative
09/28/1976	US3983108 Antibiotic purification process
09/14/1976	US3980644 Extraction with cyclohexanone
09/07/1976	US3979384 C-3 Substituted cephalosporins
09/07/1976	US3979383 Purification process for 7-aminocephalosporins
08/1976
08/31/1976	US3978053 Process for producing cephalosporins
08/31/1976	US3978051 7-Methoxy 7-α-ureidothienylacetamidocephalosporins
08/31/1976	US3978050 3-Tetrazolyl and other derivatives of [[(alkoxy)thiocarbonyl]oxy]acetyl cephalosporins
08/24/1976	US3976641 Cephalosporin intermediates and process therefor
08/24/1976	US3976546 Cephalosporins
08/17/1976	US3975385 Antibiotic
08/17/1976	US3975383 Microbiocide
08/17/1976	US3975235 Esterase
08/10/1976	US3974154 3-Benzyl-7-amino-3-cephem-4-carboxylic acid, the tertiary butyl ester, or the pharmaceutically acceptable salts thereof
08/10/1976	US3974153 7-Hydrocarbonoxy imino-acetamido-3-carbamoyloxy methylceph-3-em-4 carboxylic acids
08/10/1976	US3974152 3-Ethyl- and 3-(2'cyanoethyl)-cephalosporins
08/10/1976	US3974151 Cephalosporin compounds
08/10/1976	US3974150 Penicillin, antibiotics
08/03/1976	US3972919 Chemical intermediate for antibiotics
08/03/1976	US3972774 By an esterase enzyme from bacillus
07/1976
07/27/1976	US3971780 Microbiocide, antibiotic
07/27/1976	US3971779 7-[2-(5-Amino-1,3,4-thiadiazol-2-ylthio)acetamido]cephalosporins
07/27/1976	US3971778 Antibiotic
07/20/1976	US3970651 Antibiotic
07/06/1976	US3968109 Production of 2-(thio substituted)cephalosporin sulfoxides and 2-(thio substituted)cephalosporins
07/06/1976	US3968108 Or a cepham compound
06/1976
06/29/1976	US3966738 Azetidine derivatives
06/29/1976	US3966720 Process for producing desacetoxy cephalosporanic acid compound
06/29/1976	US3966719 4-(Tetrazol-5-yl)-Δ3 -cephem compounds
06/29/1976	US3966718 Antimicrobial
06/29/1976	US3966717 Antibiotics
06/29/1976	US3966709 Penicillins and cephalosporins and their production
06/22/1976	US3965099 Cephalosporin esters with antibacterial activity
06/22/1976	US3965098 Intermediates for preparing cephalosporins and methods of production
06/15/1976	US3963712 3-Halo-cephalosporins
06/15/1976	US3963711 Cyanomethyl sulfinyl- and sulfonyl-acetamido cephalosporins
06/15/1976	US3963709 Antibacterial
06/15/1976	US3963704 Penicillin esters
06/15/1976	US3963702 Phthalide penicillin ester intermediates
06/08/1976	US3962277 Acetidine derivatives
06/08/1976	US3962232 Antibiotics
06/08/1976	US3962231 Preparation of 7-acylamido-7-methoxy-3-substituted methyl-3(or 2)-cephem-4-carboxylic acid and its s-oxides
06/08/1976	US3962230 P-hydroxymethylphenylacetamidocephalosporins
06/08/1976	US3962229 2-(Thiocarbonylamino)acetamido-7α-methoxy cephalosporanic acid compounds
06/08/1976	US3962228 3-benzoylpropionamido cephalosporanic derivatives
06/08/1976	US3962227 3-halo cephalosporins
06/08/1976	US3962226 3-nitrooxycepham compounds and process for preparing desacetoxycephalosporins therefrom
06/08/1976	US3962224 Cephalosporin compounds
06/08/1976	US3962223 Substituted cephene-4-carboxylates and their method of preparation
06/08/1976	US3962214 Process for preparing amino substituted β-lactam antibiotics
06/08/1976	US3962036 Process for the manufacture of 7-amino-cephalosporanic acid-type compounds
06/01/1976	US3960855 Substituted sulfonylacetamido cephalosporins
06/01/1976	US3960853 Bactericides
06/01/1976	US3960852 Substituted sulfonylacetamido cephalosporins
06/01/1976	US3960851 Preparation of desacetoxy-cephalosporin sulfoxides from penicillin sulfoxides
06/01/1976	US3960850 Bactericides
06/01/1976	US3960849 Amino-1,2,4-oxadiazolyl-3-acetyl cephalosporins
06/01/1976	US3960845 Process for preparing 7β-acylamino-7α-alkoxycephalosporins or 6β-acylamino-6α-alkoxypenicillins
06/01/1976	US3960843 Process for the preparation of esters of N-blocked penicillin acids which comprises reacting the acid or a salt thereof with a primary amine and a nitrosating agent
06/01/1976	US3960662 Process for the production of 7-amino-cephem compounds
05/1976
05/25/1976	US3959267 Microbiocides, chemical intermediates

1 ... 65 66 67 68 69 70 71 72 73 74 75 76