The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 1983
Filed:
Nov. 19, 1981
Daniel Farge, Thiais, FR;
Pierre L Roy, Thiais, FR;
Claude Moutonnier, Le Plessis Robinson, FR;
Bernard Plau, Creteil, FR;
Jean-Francois Peyronel, Palaiseau, FR;
Rhone-Poulenc Industries, Paris, FR;
Abstract
New oxacephalosporin derivative of the general formula: ##STR1## in which R.sub.1 is a protective radical, R.sub.2 is either a radical of the general formula: ##STR2## [in which R.sub.5 is hydrogen, alkyl, vinyl, protected carboxyalkyl or a protective radical and R.sub.6 is a protective radical] or an .alpha.-carboxyarylacetyl radical and R' is hydrogen or methoxy in the 7.alpha.-position, or alternatively R.sub.2 is a protective radical and R' is either hydrogen or methoxy in the 7.alpha.-position or hydrogen in the 7.beta.-position, and R.sub.3 and R.sub.4 are optionally substituted alkyl, or phenyl, or form a heterocyclic ring with the nitrogen atom, their E and Z forms and mixtures thereof and also their preparation. These new products are useful as intermediates for the preparation of biologically active oxacephalosporins.