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:
Feb. 25, 1992
Filed:
Sep. 01, 1989
Wolf-Ulrich Nickel, Bad Soden am Taunus, DE;
Rainer Henning, Hattersheim am Main, DE;
Wolfgang Ruger, Kelkheim, DE;
Ulrich Lerch, Hofheim am Taunus, DE;
Hansjorg Urbach, Kronberg/Taunus, DE;
Franz Hock, Dieburg, DE;
Gabriele Wiemer, Kronberg/Taunus, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The invention relates to compounds of the formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.4 represent optionally substituted aliphatic, alicyclic, alicyclic-aliphatic, aromatic, araliphatic, heteroaromatic or heteroaromatic-aliphatic radicals, with R.sup.2, if not already covered by the above-mentioned definitions, denoting the side-chain, which is protected if necessary, of a naturally occurring .alpha.-amino acid, R.sup.4 can additionally represent ##STR2## R.sup.3 denotes an optionally substituted aliphatic, alicyclic, aromatic or araliphatic radical, or R.sup.3 and R.sup.4 form, together with the atoms carrying them, a mono-, bi- or tricyclic heterocyclic ring system,