EP0126587A1 — Carboxylic thio-pyrrolidinyl beta-lactam compounds and production thereof
Assigned to Sumitomo Pharma Co Ltd · Expires 1984-11-28 · 41y expired
What this patent protects
Penem compounds are of the formule: where R 1 is H or hydroxyethyl, wherein the -OH may be protected R 2 is H or a protective group, e.g. alkoxycarbonyl; R 3 is H or a protective group, e.g. alkyl; X is methylene or alkyl-methylene or S; Y is amino (-NH 2 ) whi…
USPTO Abstract
Penem compounds are of the formule: where R 1 is H or hydroxyethyl, wherein the -OH may be protected R 2 is H or a protective group, e.g. alkoxycarbonyl; R 3 is H or a protective group, e.g. alkyl; X is methylene or alkyl-methylene or S; Y is amino (-NH 2 ) which may be substituted by various groups which can form a ring. Synthesis is from a B-lactam derivative wherein the 2-position has a reactive ester alcohol group or alkylsulfinyl group, reacted with a pyrrolidinyl derivative in a solvent in presence of a base. The compounds are useful as antimicrobial agents.
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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