HETEROARYLAMINOSULFONYLPHENYL DERIVATIVES USEFUL AS SODIUM OR CALCIUM CHANNEL BLOCKERS IN THE TREATMENT OF PAIN AND COMPOSITION COMPRISING THEM

摘要

The invention discloses a compound having formula IV: Wherein Zm, Tm, RN, X1 are as defined in the specification or a pharmaceutically acceptable salt thereof, which are useful as sodium or calcium channel blockers in the treatment of paid and also pharmaceutical composition, comprising the said compound.