The invention relates to cyclourea compounds of Formula I: or a
pharmaceutically acceptable salt or solvate thereof, wherein
R.sup.1-R.sup.3 and Z are defined as set forth in the specification. The
invention is also directed to the use of compounds of Formula I to treat,
prevent or ameliorate a disorder responsive to the blockade of calcium
channels, and particularly N-type calcium channels. Compounds of the
present invention are especially useful for treating pain.
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