AU597748B2 — Novel cephalosporin derivatives with improved pharmacokinetics, process for their preparation and pharmaceutical compositions in which they are present
Assigned to Sanofi SA · Expires 1990-06-07 · 36y expired
What this patent protects
Derivatives corresponding to the general formula: <IMAGE> in which: - R1, R2 and R3 denote H, or R1 and R2 denote H or CH3 and R3 = COOH or else <IMAGE> form a cyclobutyl group and R3 = COOH; - A and B are different and occupy the meta and para positions of the benze…
USPTO Abstract
Derivatives corresponding to the general formula: <IMAGE> in which: - R1, R2 and R3 denote H, or R1 and R2 denote H or CH3 and R3 = COOH or else <IMAGE> form a cyclobutyl group and R3 = COOH; - A and B are different and occupy the meta and para positions of the benzene nucleus; one denotes a hydroxyl group and the other is chosen from the groups <IMAGE> and the pharmaceutically acceptable salts and esters of the said derivatives. Use in therapeutics.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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