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:
Jun. 18, 1991
Filed:
May. 03, 1989
Applicant:
Inventors:
Matthew Carson, Nutley, NJ (US);
Ru-Jen L Han, Princeton Junction, NJ (US);
Ronald A LeMahieu, North Caldwell, NJ (US);
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
514568 ; 514533 ; 514534 ; 514539 ; 514544 ; 514546 ; 514567 ; 514646 ; 514647 ; 514679 ; 514685 ; 514716 ; 514721 ; 560 46 ; 560 53 ; 560 64 ; 560 65 ; 560 66 ; 560 70 ; 560 74 ; 560108 ; 560138 ; 560141 ; 562453 ; 562463 ; 562473 ; 562474 ; 562476 ; 564307 ; 564422 ; 564443 ; 568306 ; 568325 ; 568329 ; 568331 ; 568586 ; 568644 ; 568645 ;
Abstract
The invention relates to catechol carboxylic acid derivatives of the formula ##STR1## wherein, R.sub.1 is ##STR2## acetyl, hydrogen, hydroxy or alkanoyloxy, R.sub.2 is ##STR3## hydroxy, hydrogen or alkanoyloxy, wherein R is hydrogen, lower alkyl or --(CH.sub.2).sub.n --N--(lower alkyl).sub.2,