Patent number: 6455538
Abstract: Compounds of general formula I
wherein X is a single bond, —O—, C-C4-alkylene, or an alkylene bridge having 1 to 8 carbon atoms which may be branched or unbranched and optionally have one or two oxygen atom(s) anywhere in the bridge; R1 is hydrogen, methyl, ethyl, or phenyl; R2 is hydrogen or methyl; R3 is hydrogen, fluorine, chlorine, bromine, hydroxy, methyl, or methoxy; R4 is hydrogen, methyl, or ethyl; R5 is hydrogen, methyl, or ethyl; R6 is hydrogen, methyl, or ethyl; R7 is tert-butyl, cyclohexyl, phenyl optionally substituted by R9 and R10, which may be identical or different, or;
R8 is hydrogen or C1-C4-alkyl; Z is oxygen, NH, or sulfur; R9 is hydrogen, methyl, fluorine, chlorine, bromine, or methoxy; R10 is hydrogen, methyl, fluorine, chlorine, bromine, or methoxy; optionally in the form of the individual optical isomers, mixtures of the individual enantiomers or racemates as well as in the form of the free bases or the corresponding acid addition salts
Type:
Grant
Filed:
March 10, 2000
Date of Patent:
September 24, 2002
Assignee:
Boehringer Ingelheim Pharma KG
Inventors:
Matthias Grauert, Adrian Carter, Wolf-Dietrich Bechtel, Thomas Weiser, Rainer Palluk, Uwe Pschorn
