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:
Jul. 28, 1981
Filed:
Sep. 10, 1979
Applicant:
Inventor:
William R Williamson, Slough, GB;
Assignee:
Lilly Industries Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
424308 ; 560 51 ; 560 81 ; 560 82 ; 562462 ; 562489 ; 424317 ;
Abstract
Compounds of formula I ##STR1## wherein either R.sup.1 and R.sup.2 are both hydrogen or R.sup.1 and R.sup.2, taken together, represent a group of formula (a): ##STR2## in which R.sup.5 is hydrogen, halogen or C.sub.1-4 alkyl, R.sup.3 is hydrogen or a group of formula (b): ##STR3## in which R.sup.6 is hydrogen or C.sub.1-4 alkyl, and R.sup.4 is hydrogen or a group of formula --CHR.sup.7 COOH, where R.sup.7 is hydrogen or C.sub.1-4 alkyl, provided that: