Patent ID: 8030339

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 —COR 3 ; wherein R 3 represents —(CH 2 —O) m -aryl or —(CH 2 —O) m -heteroaryl; wherein m is 0 or 1; and 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; and R 2 represents halo, nitro, 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 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 R d and R e independent of each other are hydrogen or alkyl.