This invention provides compounds of the formulae:wherein:R1 is
hydrogen, —C(O)CH3 or
alkyl of 1-6 carbon atoms;R2 and R3 are each, independently,
hydrogen,
alkyl of 1-6 carbon atoms, cycloalkyl, alkoxy of 1-6 carbon atoms, —CH2OH, fluoroalkyl,
alkyl sulfonamide of 1-6 carbon atoms, alkyl
amide of 1-6 carbon atoms, amino, alkylamino of 1-6 carbon atoms, dialkylamino of 1-6 carbon atoms per alkyl
moiety, fluoroalkoxy of 1-6 carbon atoms, acyl of 2-7 carbon atoms,
aryl, or aroyl;R4 and R5 are each, independently,
hydrogen, alkyl of 1-6 carbon atoms, alkoxy of 1-6 carbon atoms,
halogen, fluoroalkyl, —CN, alkyl sulfonamide of 1-6 carbon atoms, alkyl
amide of 1-6 carbon atoms, amino, alkylamino of 1-6 carbon atoms, dialkylamino of 1-6 carbon atoms per alkyl
moiety, fluoroalkoxy of 1-6 carbon atoms, acyl of 2-7 carbon atoms, or aroyl;R6 and R7 are each independently hydrogen, C1-C6 alkyl or cycloalkyl;or a pharmaceutically acceptable salt thereof, as well as pharmaceutical compositions containing these compounds and methods for their use, including treatment of obsessive-compulsive disorder,
panic disorder, depression,
anxiety,
generalized anxiety disorder,
schizophrenia,
migraine, sleep disorders,
eating disorders,
obesity,
epilepsy, and
spinal cord injury.