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Class Information
Number: 540/221
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium or tellurium) or nitrogen as the only ring hetero atoms > Hetero ring is four-membered containing nitrogen and having chalcogen double bonded directly to a ring carbon which is adjacent to the ring nitrogen > Polycyclo ring system containing the hetero ring as one of the cyclos > The ring nitrogen is shared by a six-membered ring > The six-membered ring contains sulfur > 1-thia-5-aza-bicyclo(4.2.0)octane (including unsaturated; e.g., cepham, etc.) > 7,7-disubstituted
Description: Compounds wherein both hydrogen atoms bonded to the carbon atom in the 7-position of the cepham or cephem ring system have been replaced by substituents.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
7741478 Salts in the preparation of cephalosporin antibiotics Jun. 22, 2010
7728126 Purification of beta-lactam products Jun. 1, 2010
7705142 Process for the preparation of cefixime Apr. 27, 2010
7662955 Process for the preparation of cefoxitin Feb. 16, 2010
7605256 Process for preparing sodium cefoxitin Oct. 20, 2009
7560545 Process for obtaining cefotetan with high yield Jul. 14, 2009
6303592 7-alkylidene cephalosporanic acid derivatives and methods of using the same Oct. 16, 2001
6288086 N-hydroxy-2-(alkyl, aryl, or heteroaryl, sulfanyl, sulfinyl or sulfonyl)-3-substituted alkyl, aryl or heteroarylamides as matrix metalloproteinase inhibitors Sep. 11, 2001
6013647 Benzoxazinedione derivatives, method of producing them and uses thereof Jan. 11, 2000
6001997 Cephalosporins and homologues, preparations and pharmaceutical compositions Dec. 14, 1999
5929233 Cyclization for preparing halo-cephems Jul. 27, 1999
5856474 Cephalosporin synthesis Jan. 5, 1999
5840885 Processes for the production of 6-.alpha.-aminoacyl-penicillin and 7-.alpha . Nov. 24, 1998
5804577 Cephalosporin derivatives Sep. 8, 1998
5750684 Process for the preparatin of .beta.-lactam compounds May. 12, 1998
5719276 Beta lactam production Feb. 17, 1998
5693791 Antibiotics and process for preparation Dec. 2, 1997
5686604 Cephalosporines Nov. 11, 1997
5683996 4-thia-1-aza-bicyclo[4,2,0]oct-2-ene antibiotics Nov. 4, 1997
5648346 Antimicrobial carbacephem-quinolones Jul. 15, 1997
5644052 Process for the production of cephalosporines and novel intermediates in this process Jul. 1, 1997
5639877 Intermediates in the synthesis of cephalosporins Jun. 17, 1997
5637580 Antimicrobial penem-quinolones Jun. 10, 1997
5631367 E-rotamers of 3-hydroy cephem derivatives May. 20, 1997
5629306 7-alkylidene cephalosporanic acid derivatives and methods of using the same May. 13, 1997
5602117 Cephalosporin compounds Feb. 11, 1997
5597817 7-vinylidene cephalosporins and methods of using the same Jan. 28, 1997
5530116 Antimicrobial quinolonyl lactams Jun. 25, 1996
5523400 Cephalosporin antibiotics Jun. 4, 1996
5514561 Fluorogenic and chromogenic .beta.-lactamase substrates May. 7, 1996
5498729 Prodrug compositions Mar. 12, 1996
5446037 2-[(substituted) methylene]cephalosporin sulfones as antiinflammatory, antidegenerative and antithrombin agents Aug. 29, 1995
5412093 3-heterocyclic thiomethyl cephalosporins May. 2, 1995
5410044 Process for preparing Z and E-rotamers of 3-hydroxy cephem derivatives Apr. 25, 1995
5397779 Cephalosporins Mar. 14, 1995
5385897 4-thia-1-aza-bicyclo[4,2,0]oct-2-ene derivatives Jan. 31, 1995
5366970 Cephem compounds and pharmaceutically acceptable salts thereof Nov. 22, 1994
5364848 Substituted cephalosporin sulfones as anti-inflammatory and antidegenerative agents Nov. 15, 1994
5359057 Acylation of amines Oct. 25, 1994
5356888 1,1-dioxo-cephem-4-carbothiolic acid derivatives Oct. 18, 1994
5350845 Process for preparing 7-substituted-amino-3-hydroxy-3-cephem-4-protected carboxy-sulfoxide esters Sep. 27, 1994
5348951 Cephalosporins Sep. 20, 1994
5336768 Antibacterial cephalosporin compounds Aug. 9, 1994
5329002 Antibacterial cephalosporin compounds Jul. 12, 1994
5302713 Method for the preparation of .DELTA..sup.3 -7-substituted amino desacetoxy cephalosporanic acid Apr. 12, 1994
5275816 Cephalosporin derivatives Jan. 4, 1994
5258377 2-spirocyclopropyl 4-acylcephems Nov. 2, 1993
5254679 Cephalosporin intermediates Oct. 19, 1993
5246926 Cephalosporin derivatives Sep. 21, 1993
5232918 Cephalosporin derivatives Aug. 3, 1993

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