Patent ID: 7592458

Claim:
A compound having the formula 1: or an optically active isomer thereof, wherein R 1 is, independently, one or more H, halo or lower (C1-C6) alkyl group(s), substituted at the 2, 3 and or 4 positions of the phenyl ring and wherein n is equal to 1, 2, 3 or 4 and wherein D represents a group of the formula 2: in which R 3 represents hydrogen, and R 2 forms, together with the adjacent carbon atom of the (CH 2 ) n group a nitrogenous heterocyclic ring, selected from the group consisting of un-substituted piperidino, pyrrolidino, pyridino, morpholino, quinuclidino, decahydroquinolino, decahydroisoquinolino and piperazino rings and substituted piperidino, pyrrolidino, morpholino, decahydroquinolino, decahydroisoquinolino and piperazino rings, and when substituted, the nitrogen substituent of said rings is selected from the group consisting of methyl, ethyl, propyl, butyl, hydroxyethyl, hydroxypropyl or hydroxybutyl and where appropriate, said nitrogenous heterocyclic ring is attached at 2-, 3- or 4-position, or a pharmaceutically acceptable salt thereof.