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Class Information
Number: 540/222
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
Description: Compounds which contain an additional hetero ring.










Sub-classes under this class:

Class Number Class Name Patents
540/223 2- or 4-position substituent contains hetero ring 87
540/224 3-position substituent contains a pyridine ring (e.g., quinoline, thienopyridine, lutidines, etc.) 189
540/226 3-position substituent contains sulfur 515
540/228 Alkyl, hydroxyalkyl, alkoxyalkyl or alkanoyloxyalkyl bonded directly to 3 position 513


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8614315 Cefdinir and cefixime formulations and uses thereof Dec. 24, 2013
8575144 Beta-lactamase inhibitory compounds Nov. 5, 2013
8557978 Cross-linked glycopeptide-cephalosporin antibiotics Oct. 15, 2013
8329684 Cephalosporin derivatives and pharmaceutical compositions thereof Dec. 11, 2012
8329895 Cefdinir acid double salt and method for producing the same Dec. 11, 2012
8093377 Cephalosporin in crystalline form Jan. 10, 2012
8071761 Substrates for beta-lactamase and uses thereof Dec. 6, 2011
8044195 Cross-linked glycopeptide-cephalosporin antibiotics Oct. 25, 2011
8008478 Process for the preparation of cefixime Aug. 30, 2011
7868147 Fluorescent probe Jan. 11, 2011
7847093 Processes for the preparations of cefepime Dec. 7, 2010
7825241 Cefdinir intermediate Nov. 2, 2010
7741478 Salts in the preparation of cephalosporin antibiotics Jun. 22, 2010
7728126 Purification of beta-lactam products Jun. 1, 2010
7728127 Cross-linked glycopeptide-cephalosporin antibiotics Jun. 1, 2010
7615631 Crystalline solvate of cefuroxime acid Nov. 10, 2009
7592447 Process for production of intermediates for use in cefalosporin synthesis Sep. 22, 2009
7553962 Cross-linked glycopeptide-cephalosporin antibiotics Jun. 30, 2009
7531650 Cephalosporin salts in crystalline form May. 12, 2009
7507813 Amorphous cefuroxime axetil and preparation process therefore Mar. 24, 2009
7488724 7-alkylidene-3-substituted-3-cephem-4-carboxylates as beta-lactamase inhibitors Feb. 10, 2009
7479556 Process for producing Cefepime and cephalosporin analogues Jan. 20, 2009
7452990 Intermediates for synthesis of cephalosporins and process for preparation of such intermediates Nov. 18, 2008
7427680 Fluorogenic substrates for BETA-lactamase gene expression Sep. 23, 2008
7405294 Intermediate cefdinir salts Jul. 29, 2008
7396926 Beta-lactamase substrates having phenolic ethers Jul. 8, 2008
7384928 Broad spectrum cephem compounds Jun. 10, 2008
7355040 Process for the preparation of cephalosporin compounds and synthetic intermediates Apr. 8, 2008
7339055 Process for the preparation of cephalosporin antibiotic Mar. 4, 2008
7250508 Cefdinir intermediate Jul. 31, 2007
7244842 Amorphous hydrate of a cephalosporin antibiotic Jul. 17, 2007
7192943 Cephem compounds Mar. 20, 2007
7179801 Cephem compounds Feb. 20, 2007
7173126 Crystalline cefdinir salts Feb. 6, 2007
7157576 Crystalline acid salts of cefdinir and process for preparing cefdinir using same Jan. 2, 2007
7157575 Substrates for .beta.-lactamase and uses thereof Jan. 2, 2007
7129232 Cephem compounds Oct. 31, 2006
7112672 Process for the selective preparation of 3-(z) propenyl-cephem compound Sep. 26, 2006
7105659 Process for preparing cefdinir Sep. 12, 2006
7071329 Process for preparing cephalosporins with salified intermediate Jul. 4, 2006
7064199 Process for the manufacture of 3-amino-pyrrolidine derivatives Jun. 20, 2006
7064198 Method for preparation of cefuroxime axetil Jun. 20, 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
6897304 Cephem compounds and ESBL-detecting reagents containing the same May. 24, 2005
6894162 Intermediates in cephalosporin production May. 17, 2005
6835829 Purification process Dec. 28, 2004
6833452 Process for the preparation of highly pure crystalline (R,S)--cefuroxime axetil Dec. 21, 2004
6825345 Process for purification of a cephalosporin derivative Nov. 30, 2004

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