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:
Oct. 04, 1977
Filed:
Nov. 18, 1974
Applicant:
Inventors:
Karl Heusler, Basel, CH;
Robert Burns Woodward, Cambridge, MA (US);
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ; 2603 / ; 2602391 ; 2602 / ; 542439 ; 542450 ; 544 16 ; 544 18 ;
Abstract
.alpha.-Hydroxy-2-oxo-1-azetidinemethane-carboxylic acid compounds of formula ##STR1## wherein R.sub.1 represents a hydrogen atom or the organic residue of an alcohol, R.sub.2 represents a hydrogen atom or an acyl residue, R.sub.3 represents an organic residue and R.sub.4 represents a hydrogen atom, when R.sub.2 stands for an acyl residue, or the two groups R.sub.3 and R.sub.4 together represent a disubstituted carbon atom, when R.sub.2 stands for a hydrogen atom or an acyl group, are useful as intermediates for the manufacture of pharmacologically active compounds.