Com Piridinoilpiperidinas 5-HT1F agonists.

A compound of formula I or a salt of pharmaceutically acceptable acid addition thereof, wherein; R1 is C1-C6 alkyl, C1-C6 alkyl, C3-C7 cycloalkyl, C3-C7 substituted, C3-C7cycloalkyl-C1-C3, C3-C7cycloalkyl-C1-C3 substituted phenyl, substituted phenyl, heterocycle, or substituted heterocycle; R2 is hydrogen, C1-C3 alkyl, C3-C3 cycloalkyl C1-C6-alkyl, or a group of formula II R3 is hydrogen or C1-C3 alkyl; R4 is hydrogen, halo, or C1-C3 alkyl; R5 is hydrogen or C1-C3 alkyl; R6 is hydrogen or C1-C6 alkyl; n is an integer from 1 to 6 inclusive.