The 5.5-disubstitutedpyrimidine-2,4.6-trione represent a new class of MIL I
P inhibitors showing selectivity for the gelatinases A and B, collagenase-3
, and human neutrophil collagenase. The SAR presented here is in good agree
ment with an X-ray structure of compound 5 bound to the catalytic domain of
stromelysin-1. While of the barbiturate structural class, compound 5 did n
ot show any toxic or sedative effects. (C) 2001 Elsevier Science Ltd. All r
ights reserved.