Patent ID: 7034044

Claim:
A compound of formulae wherein R 1 and R 2 are each independently selected from the group hydrogen, lower alkyl, —(CH 2 ) n NR 5 R 5 and —(CH 2 ) n+1 OH, with the proviso that at least one of R 1 and R 2 are —(CH 2 ) n NR 5 R 5 ′; R 5 and R 5 ′ are each independently hydrogen or lower alkyl; R 3 R 4 are each independently selected from the group hydrogen, lower alkyl, lower alkoxy, halogen, trifluoromethyl and hydroxy; Ar is selected from the group phenyl and thiophenyl; R′ is selected from the group lower alkyl and hydrogen; and n is 0, 1 or 2; or a pharmaceutically acceptable acid addition salt thereof, with the proviso that when Ar is unsubstituted phenyl and R 2 is H, R 1 is not 2-amino.