Intermediates for preparing α-carboxy-α-(3-thienyl)penicillin and cephalosporin derivatives
A new process is disclosed for the preparation of alpha-carboxy-alpha-phenyl(or 3-thienyl)penicillin and cephalosporin derivatives. The process comprises reacting a 1.3-dioxane-4.6-dione derivative with the desired penicillanic or cephalosporanic acid derivative.
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(2008/06/13)
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