Patent ID: 7939556

Claim:
A compound of the general formula (I): any of its stereoisomers or any mixture of its stereoisomers, or a pharmaceutically acceptable salt thereof, wherein R 1 represents —COOR 3 ; wherein R 3 represents hydrogen, alkyl, cycloalkyl, cycloalkylakyl, alkenyl, alkynyl, aryl or heteroaryl; which aryl or heteroaryl group is optionally substituted with one or more substituents independently selected from the group consisting of: halo, hydroxy, R a R b N—, R a R b N-alkyl, cyano, nitro, trifluoromethyl, trifluoromethoxy, alkoxy, cycloalkoxy, R a —(C═O)—, R a —O—(C═O)—, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, and alkynyl; wherein R a and R b independent of each other are hydrogen or alkyl; R 2 represents halo, nitro, R c — or R c —(CH 2 ) m —O—(CH 2 ) n —; wherein m is 0 or 1; n is 0 or 1; and R c is an aryl or heteroaryl group; which aryl or heteroaryl group is optionally substituted with one or more substituents independently selected from the group consisting of: halo, hydroxy, R d R e N—, R d R e N-alkyl, R d R e N—(C═O)—, cyano, nitro, trifluoromethyl, trifluoromethoxy, alkoxy, cycloalkoxy, R d —(C═O)—, R d —O—(C═O)—, alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, and alkynyl; wherein when both m and n are 0, R c is not phenyl or pyridinyl; and wherein R d and R e independent of each other are hydrogen or alkyl with the provisos that when R 3 represents hydrogen, R 2 is not halo; and when R 3 represents alkyl, R 2 is not nitro or halo.