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. 02, 1984
Filed:
Nov. 04, 1981
Applicant:
Inventors:
Assignee:
Hoechst U.K. Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
424270 ; 2602 / ; 2602 / ; 2602 / ;
Abstract
What are disclosed are compounds, useful as intermediates in the preparation of substituted penem compounds, of the formula ##STR1## methods for making such compounds from intermediates of the formula ##STR2## by reaction of the latter with a nucleophilic compound, methods for making such intermediates from compounds of the formula ##STR3## by reaction of the last-mentioned compounds with a tervalent phosphorus compound, and methods for making said last-mentioned compounds by cyclizing compounds of the formula ##STR4## with a tervalent phosphorus compound.