Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Computer aided drug design led to a new class of spiro-barbiturates (eg, 4a, MMP-13 K i = 4.7 nM) that are potent inhibitors of MMP-13. ... Osteoarthritis is a degenerative disease characterized by the loss of joint function and articular cartilage. Current therapies, such as COX-2 ...