55243-80-6Relevant articles and documents
3-(Substituted)carbonylamino cephem derivatives
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, (2008/06/13)
7-Acylamino and 7-amino-3-(substituted)carbonylamino-3(or 2)-cephem-4-carboxylic acids and esters thereof, which are useful as antibiotics or as intermediates in preparing antibiotic substances respectively, are prepared from 7-acylamino-3-azidocarbonyl-2
3,4-Dicarboxycephalosporins and derivatives
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, (2008/06/13)
7-Acylamino and 7-amino-3-carboxy-3-cephem-4-carboxylic acids and derivatives thereof, which are useful as antibiotics or as intermediates in preparing antibiotic substances, are prepared by an NBS oxidation of acetal derivatives of 3-formyl cephalosporin