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:
Sep. 27, 1977
Filed:
Jan. 02, 1976
Applicant:
Inventors:
Poul Borrevang, Rodovre, DK;
Henning Borge Petersen, Lyngby, DK;
Assignee:
Novo Industri A/S, Bagsvaerd, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 18 ; 424246 ; 2602391 ;
Abstract
Conversion of penicillin sulfoxides to the corresponding 3-desacetoxycelphalosporins are carried out in high yield by heating, e.g. 80.degree.-130.degree. C, a solvent solution of the penicillin in the presence of a complex formed by a phosphite or phosphine amide with the salt of a strong acid and a nitrogenous base, e.g. alpha-picoline hydrobromide. One preferred amide is 2-piperidino-1,3,2-dioxaphospolane.