Patent · US Expired

Pyridone-acetic acid derivative

US4243810A · kind A · utility

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1Claims

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Assignee

Merck Patent GmbH · DE

Inventors

Rolf Gericke · Seeheim-Jugenheim, DE
Werner Rogalski
Rolf Bergmann
Walter Hameister · Pulheim, DE
Helmut Wahlig · Darmstadt, DE

Key dates

Filing date	Feb 1, 1979
Grant date	Jan 6, 1981
Priority date	—
Expiry date	Feb 1, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D213/61
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Novel pyridone-acetic acid derivative, viz. 3,5-dichloro-4-pyridone-1-acetic acid (I) is used as an intermediate in the production of certain cephem derivatives having anti-bacterial activity against gram-negative and gram-positive bacteria. The acid (I) is prepared by methods generally known in the art, e.g. by reacting 3,5-dichloro-4-pyridone with chloracetic acid or bromoacetic acid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.