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:
Apr. 17, 1990
Filed:
Nov. 10, 1988
Applicant:
Inventor:
Michael B Gravestock, Camberley, GB;
Assignee:
Imperial Chemical Industries plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 66 ;
Abstract
Compounds of the formula (V), ##STR1## wherein R.sup.1 is certain optionally substituted alkyl groups, R.sup.2 is hydrogen, alkyl or optionally substituted henyl and R.sup.3 and R.sup.4 are independently alkyl or optionally substituted phenyl, or together form a C.sub.4-7 cycloalkyl ring; are described as useful intermediates in the preparation of carbapenem and penem antibiotics. Processes for their preparation are described as are certain oxadiazine intermediates.