| abstract |
The present invention relates to compounds of formula I: n nor pharmaceutically acceptable acid addition salts thereof, where; n R 1 is C 1 -C 6 alkyl, substituted C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, substituted C 3 -C 7 cycloalkyl, C 3 -C 7 cycloalkyl-C 1 -C 3 alkyl, substituted C 3 -C 7 cycloalkyl-C 1 -C 3 alkyl, phenyl, substituted phenyl, heterocycle, or substituted heterocycle; nn R 2 is hydrogen, C 1 -C 3 alkyl, C 3 -C 6 cycloalkyl-C 1 -C 3 alkyl, or a group of formula II n n R 3 is hydrogen or C 1 -C 3 alkyl; R 4 is hydrogen, halo, or C 1 -C 3 alkyl; R 5 is hydrogen or C 1 -C 3 alkyl; R 6 is hydrogen or C 1 -C 6 alkyl; and n is an integer from 1 to 6 inclusively. nn The compounds of the present invention are useful for activating 5 -HT 1F receptors, inhibiting neuronal protein extravasation, and for the treatment or prevention of migraine in a mammal. The present invention also relates to a process for the synthesis of intermediates in the synthesis of compounds of Formula I. |