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:
May. 09, 1995
Filed:
Dec. 03, 1992
Cassella AG, Frankfurt, DE;
Abstract
The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## by reaction of compounds of the general formula II ##STR2## with amines of the general formula III ##STR3## wherein R.sup.1 and R.sup.2 independently of one another denote hydrogen, (C.sub.1 -C.sub.4)-alkyl, C.sub.1 -C.sub.4)-hydroxyalkyl or (C.sub.5 -C.sub.6)-cycloalkyl, or, together with the nitrogen atom carrying them, form (C.sub.4 -C.sub.6)-heterocyclyl and R.sup.3 and R.sup.4 independently of one another denote hydrogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.1 -C.sub.4)-hydroxyalkyl, (C.sub.1 -C.sub.2)-alkylcarbonyl or tosyl.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile