abstract |
The invention provides a compound of formula (I) (where R1, R1’, R2, R3, X, Y, Z and n are disclosed herein) or a pharmaceutically acceptable salt thereof (s “Diaminoalkylene Compound”); pharmaceutical compositions comprising an effective amount of a Diaminoalkylene Compound; and methods for treating pain, as well as other conditions, comprising administering to an animal in need thereof an effective amount of a Diaminoalkylene Compound. |