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:
Aug. 07, 1990
Filed:
Aug. 28, 1989
Jurgen Engel, Alzenau, DE;
Axel Kleemann, Muhlheim, DE;
Bernd Nickel, Muhltal, DE;
Istvan Szelenyi, Schwaig, DE;
Asta Pharma AG, Frankfurt am Main, DE;
Abstract
Compounds of formula ##STR1## wherein the radicals R.sub.1 and R.sub.2 are the same or different and represent hydrogen, halogen atoms, a trifluoromethyl group, a cyano, a nitro group, an amino group, a mono-C.sub.1 -C.sub.6 -alkylamino group, a di-C.sub.1 -C.sub.6 -alkylamino group, an amino group that is substituted by a phenyl C.sub.1 -C.sub.4 -alkyl radical, a C.sub.2 -C.sub.6 -alkanoyl-amino group, a C.sub.1 -C.sub.6 -alkoxycarbonyl amino group, a C.sub.1 -C.sub.6 -alkyl group optionally substituted by a phenyl radical, a hydroxy group, a C.sub.1 -C.sub.6 -alkoxy group, a C.sub.2 -C.sub.6 -alkanoyloxy group, a phenoxy group or represent a carbamoyl group optionally substituted by one or two C.sub.1 -C.sub.6 -alkyl groups and the radical A is an acyl group which is derived from an amino acid as well as processes for their preparation.