The invention provides compounds of the formula I: 1
and pharmaceutically acceptable salts or prodrugs thereof, wherein m, n,
p, q, X, Y, Z, A, R.sup.1, R.sup.2, R.sup.4, R.sup.5, R.sup.6, R.sup.7,
R.sup.8, R.sup.9 and R.sup.10 are as defined herein. The invention also
provides methods for preparing, compositions comprising, and methods for
using compounds of formula I.