作者:Leon J. Heuser、Carl F. Anderson、Harold E. Applegate、Ekkehard H. Boehme、Joseph E. Dolfini、Mohindar S. Puar
DOI:10.1021/jo00940a029
日期:1974.12
6-Alkylpenicillins and 7-alkylcephalosporins
作者:Ekkehard H. W. Bohme、Harold E. Applegate、Jacqueline B. Ewing、Philip T. Funke、Mohindar S. Puar、Joseph E. Dolfini
DOI:10.1021/jo00942a008
日期:1973.1
6-Methyl penicillins and 7-methyl cephalosporins
作者:E. H. W. Boehme、H. E. Applegate、B. Toeplitz、J. E. Dolfini、J. Z. Gougoutas
DOI:10.1021/ja00746a057
日期:1971.8
1-Oxides of Schiff bases of 6-aminopenicillanic acid
申请人:E. R. Squibb & Sons, Inc.
公开号:US03994912A1
公开(公告)日:1976-11-30
Compounds containing a cephem nucleus are prepared by heating a 1-oxide of a Schiff base of 6-aminopenicillanic acid. These cephem compounds are useful as intermediates in the preparation of physiologically active cephalosporins.