Patent ID: 8058263

Claim:
A compound of formula I wherein R 1 represents phenyl optionally substituted 1 to 3 times by substituents each independently selected from the group consisting of halogen, methyl, methoxy, trifluoromethyl and trifluoromethoxy; W represents a bond and R 2 represents alkyl, cycloalkyl, aryl or heteroaryl; or W represents â€”Oâ€” and R 2 represents alkyl, hydroxyalkyl, alkoxyalkyl or heterocyclyl; or W represents â€”NR 3 â€”, R 2 represents alkyl, carboxyalkyl, hydroxyalkyl, alkoxyalkyl, heterocyclyl, cycloalkyl, aryl or aralkyl and R 3 represents hydrogen or alkyl; or W represents â€”NR 3 â€” and R 2 and R 3 form, together with the nitrogen that carries them, a heterocyclic ring of 4 to 7 members wherein the members needed to complete said heterocyclic ring are each independently selected from â€”CH 2 â€”, â€”CHR x â€”, â€”Oâ€”, â€”Sâ€”, â€”COâ€” and â€”NR y â€”, it being understood however that said heterocyclic ring does not contain more than one member selected from the group consisting of â€”CHR x â€”, â€”Oâ€”, â€”Sâ€”, â€”COâ€” and â€”NR y â€”, R x representing hydroxy, hydroxymethyl, alkoxymethyl or alkoxy and R y representing hydrogen or alkyl; R a represents hydrogen or methyl; R b represents hydrogen or methyl; R 4 represents alkoxy; R 5 represents hydroxy, R 6 â€”OCH 2 Oâ€” or R 7 -alkyl-NHâ€”; R 6 represents alkylcarbonyl or alkoxycarbonyl; R 7 represents alkoxycarbonyl; n represents 0, 1, 2 or 3 and Z is a bond or n is 1 and Z is phenyl; or a salt of such a compound.