The present invention provides compounds having the formula: (I); Also
provided are pro-drug compounds of the formula: (II); The invention also
provides pharmaceutical compositions containing the above compounds,
methods of using the above compounds as pharmaceuticals, and processes
for preparing the above compounds. Methods for inhibiting an ADP-ribosyl
transferase, ADP-ribosyl cyclase, ADP-ribosyl hydrolase, or NAD-dependent
deacetylase enzyme using the above compounds, and methods for treating a
disease or condition associated with an ADP-ribosyl transferase,
ADP-`ribosyl cyclase, ADP-ribosyl hydrolase, or NAD-dependent deacetylase
enzyme in a subject using the above compounds are also provided.