Patent ID: 8288370

Claim:
A compound of formula (I) wherein Het is wherein R is C 1 -C 4 alkyl; cyclopropyl; C 1 -C 4 methoxyalkyl; C 1 -C 4 ethoxyalkyl; C 1 -C 4 hydroxy alkyl; tetrahydrofuran-2-yl; tetrahydrofuran-3-yl; tetrahydropyran-2-yl; tetrahydropyran-3-yl; or tetrahydropyran-4-yl; or Het is wherein Y is C 1 -C 3 alkyl; â€”CH 2 â€”Oâ€”CH 2 â€”; or â€”CH 2 â€”CH 2 â€”Oâ€”; as well as pharmaceutically and pharmacologically acceptable salts thereof, and enantiomers of the compound of formula (I).