| abstract |
These carboxylic acid derivatives have the formula (I), in which R1 stands for tetrazole or a group (a); R2 stands for hydrogen, hydroxy, NH2, NH(C1-4-alkyl), N(C1-C4-alkyl)2, halogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkinyl, C1-C4-halogenalkyl, C1-C4-alkoxy, C1-C4-halogenalkoxy or C1-C4-alkylthio, or CR2 is linked with CR10, as indicated below, into a 5- or 6-membered ring; X stands for nitrogen or methine; Y stands for nitrogen or methine; Z stands for nitrogen or CR10, wherein R10 is hydrogen or C1-C4-alkyl or CR10 forms together with CR2 or CR3 an optionally substituted 5- or 6-membered alkylene or alkenylene ring, and wherein one or more methylene groups can be substituted by oxygen, sulphur, -NH or -N(C1-C4-alkyl); R3 stands for hydrogen, hydroxy, NH2, NH(C1-C4-alkyl), N(C1-C4-alkyl)2, halogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkinyl, C1-C4-hydroxyalkyl, C1-C4-halogenalkyl, C1-C4-alkoxy, C1-C4-halogenalkoxy, C1-C4-alkylthio; or CR3 is linked to CR10 as indicated above into a 5- or 6-membered ring, R4 and R5 (which may be identical or different) stand for optionally substituted phenyl or naphthyl, or for phenyl or naphthyl which are linked to each other at the ortho-position by a direct bond, a methylene, ethylene or ethenylene group, an oxygen or sulphur atom or an SO2, NH or N-alkyl group; optionally substituted C3-C8-cycloalkyl; R6 stands for optionally substituted C3-C8-cycloalkyl; optionally substituted phenyl or naphthyl, a 5- or 6-membered, optionally substituted heteroaromatic compound containing one to three nitrogen atoms and/or one sulphur or oxygen atom; W stands for sulphur or oxygen; Q is a spacer with a length that corresponds to a C2-C4 chain. Also disclosed are the physiologically tolerable salts of these compounds, as well as their pure enantiomer and diastereoisomer forms, their preparation and use as mixed ETA/ETB-receptor antagonists. |