Patent ID: 7855219

Claim:
A compound of the formula (I) in which R 1 and R 2 independently of one another represent hydrogen, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy or —NH—C(O)—R 7 , where the alkoxy radials for their part may be substituted by hydroxyl, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, or cyclopropyl, in which R 7 represents (C 1 -C 8 )-alkyl which may be substituted by hydroxyl or (C 1 -C 4 )-alkoxy; (C 3 -C 7 )-cycloalkyl; or (C 6 -C 10 )-aryl which may be substituted up to three times, independently of one another, by halogen, nitro, (C 1 -C 4 )-alkoxy-, carboxyl, (C 1 -C 4 )-alkoxycarbonyl or mono- or di-(C 1 -C 4 )-alkylamino, or R 1 and R 2 are attached to adjacent phenyl ring atoms and are linked to represent a group —O—CH 2 —O—, —O—CH 2 —CH 2 —O—, or —O—CH 2 —CH 2 —CH 2 —O—, R 3 represents hydrogen, R 4 and R 5 independently of one another represent hydrogen, (C 1 -C 8 )-alkyl which may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, (C 3 -C 7 )-cycloalkyl, (C 6 -C 10 )-aryl or 5- to 6-membered heteroaryl having up to three heteroatoms from the group consisting of N, O and S, (C 3 -C 8 )-cycloalkyl which may be substituted by hydroxyl or (C 1 -C 8 )-alkyl, or R 4 and R 5 together with the nitrogen atom to which they are attached form a 5- to 7-membered saturated or partially unsaturated heterocycle which may contain one or two further heteroatoms from the group consisting of N, O and S in the ring and which may be mono- to trisubstituted, independently of one another, by oxo, fluorine, chlorine, hydroxyl, (C 1 -C 6 )-alkyl or (C 1 -C 6 )-alkoxy, and R 6 represents (C 3 -C 7 )-cycloalkyl or (C 1 -C 8 )-alkyl, where alkyl may be substituted by (C 3 -C 7 )-cycloalkyl, hydroxyl, (C 1 -C 4 )-alkoxy, (C 2 -C 4 )-alkenyl, (C 6 -C 10 )-aryl or 5- to 10-membered heteroaryl having up to three heteroatoms from the group consisting of N, O and S; where aryl and heteroaryl for their part may be substituted by halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, amino, mono- or di-(C 1 -C 4 )-alkylamino, nitro, cyano or hydroxyl, provided that if R 6 represents (C 1 -C 4 )-alkyl, R 6 is substituted by (C 3 -C 7 )-cycloalkyl, hydroxyl, (C 1 -C 4 )-alkoxy, (C 2 -C 4 )-alkenyl, (C 6 -C 10 )-aryl or 5- to 10-membered heteroaryl having up to three heteroatoms from the group consisting of N, O and S; where aryl and heteroaryl for their part may be substituted by halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, amino, mono- or di-(C 1 -C 4 )-alkylamino, nitro, cyano or hydroxyl, or a salt thereof.