A compound having Formula (I) or Formula (II) ##STR00001## is disclosed
as an P2X.sub.7 antagonist, wherein A, B, C, Y, Y, Z, m, v, R.sup.1,
R.sup.2, R.sup.3, R.sup.4, and R.sup.5, are as defined in the
description. Methods and compositions for treating disease or condition
modulated by P2X.sub.7 are also disclosed.