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Class Information
Number: 540/227
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.) > Additional hetero ring containing > 3-position substituent contains sulfur > 7-position substituent contains hetero ring
Description: Compounds in which a sustituent on the 7-position of the cepham or cephem ring system contains or consists of a hetero ring.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
8557978 Cross-linked glycopeptide-cephalosporin antibiotics Oct. 15, 2013
8470809 Crystalline sodium salt of cephalosporin antibiotic Jun. 25, 2013
8431562 Crystalline sodium salt of cephalosporin antibiotic Apr. 30, 2013
8212024 Crystalline sodium salt of cephalosporin antibiotic Jul. 3, 2012
8178521 Cefazolin sodium pentahydrate crystal and its molecular assembly preparation method May. 15, 2012
8148632 Quantum dot solar cell Apr. 3, 2012
7833998 Oral neurotherapeutic cephalosporin sulfoxide and sulfone-containing compositions Nov. 16, 2010
7741478 Salts in the preparation of cephalosporin antibiotics Jun. 22, 2010
7700581 Cephalosporin compounds comprising a C3 thio-methyl moiety substituted with N-containing heterocyclic group, and a C7 thiourea acetamido group, their preparations and uses thereof Apr. 20, 2010
7511135 Method for manufacture of ceftiofur Mar. 31, 2009
7488724 7-alkylidene-3-substituted-3-cephem-4-carboxylates as beta-lactamase inhibitors Feb. 10, 2009
7459550 Process for the preparation of Cefditoren Dec. 2, 2008
7452990 Intermediates for synthesis of cephalosporins and process for preparation of such intermediates Nov. 18, 2008
7396926 Beta-lactamase substrates having phenolic ethers Jul. 8, 2008
7384928 Broad spectrum cephem compounds Jun. 10, 2008
7339055 Process for the preparation of cephalosporin antibiotic Mar. 4, 2008
7335767 Method for preparation of ceftiofur and salts thereof Feb. 26, 2008
7098329 Process for the preparation of a cephalosporin antibiotic Aug. 29, 2006
7071329 Process for preparing cephalosporins with salified intermediate Jul. 4, 2006
6919449 Process for the preparation of cephalosporin intermediate and its use for the manufacture of cephalosporin compounds Jul. 19, 2005
6916801 7-Alkylidene-3-substituted-3-cephem-4-carboxylates as .beta.-lactamase inhibitors Jul. 12, 2005
6906187 Manufacture of cefalosporins and intermediates Jun. 14, 2005
6800756 Method for the preparation of ceftiofur sodium and its intermediates Oct. 5, 2004
6787649 Cephalosporin intermediates Sep. 7, 2004
6777549 .beta.-lactam production Aug. 17, 2004
6723716 7-acylamino-3-heteroarylthio-3-cephem carboxylic acid antibiotics and prodrugs thereof Apr. 20, 2004
6713625 Process for the preparation of cefditoren using the thioester of thiazolylacetic acid Mar. 30, 2004
6642377 Process for the preparation of basic antibiotic-inorganic acid addition salts and intermediate oxalates Nov. 4, 2003
6610845 Thioester derivatives of thiazolyl acetic acid and their use in the preparation of cephalosporin compounds Aug. 26, 2003
6583133 Propenyl cephalosporin derivatives and process for the manufacture thereof Jun. 24, 2003
6576761 Process for the preparation of cephem compounds Jun. 10, 2003
6555679 Method for preparation of ceftiofur sodium from its hydrohalide salts Apr. 29, 2003
6555680 Method for the preparation of ceftiofur sodium Apr. 29, 2003
6552186 .beta.-lactam production Apr. 22, 2003
6504026 Process for production of ceftiofur Jan. 7, 2003
6468995 Cephem compounds Oct. 22, 2002
6458949 Ceftiofur, its intermediate and a process for the preparation of the same Oct. 1, 2002
6441162 Crystalline substance of cefditoren pivoxyl and the production of the same Aug. 27, 2002
6437119 Compounds formed from two or three antibiotics and their processes of preparation Aug. 20, 2002
6417175 Phosphonocephem derivatives, process for the preparation of the same, and use thereof Jul. 9, 2002
6388070 Thioester derivatives of thiazolyl acetic acid and their use in the preparation of cephalosporin compounds May. 14, 2002
6384215 Preparation of new intermediates and their use in manufacturing of cephalosporin compounds May. 7, 2002
6303592 7-alkylidene cephalosporanic acid derivatives and methods of using the same Oct. 16, 2001
6294527 Cephem compounds Sep. 25, 2001
6294669 Crystalline substance of cefditoren pivoxyl and the production of the same Sep. 25, 2001
6294668 Vinylpyrrolidinone cephalosporin derivatives Sep. 25, 2001
6288223 Process for the selective preparation of Z-isomers of 3-2(substituted vinyl)cephalosporins Sep. 11, 2001
6242437 Cephem derivatives Jun. 5, 2001
6169180 Process for the production of cephalosporines Jan. 2, 2001
6159961 Cephem compounds Dec. 12, 2000

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