Abstract
A series of alpha-sulfone piperidine hydroxamate TACE inhibitors 11a-n bearing a quinolinyl methyl P1' group was prepared, and their activity was compared to analogous alpha- and beta-sulfone piperidine hydroxamates with a butynyloxy P1' group. The quinolinyl methyl P1' group affords increased inhibitory enzyme activity relative to the corresponding butynyloxy P1' analogs in the alpha-sulfone piperidine hydroxamate series, and greater selectivity than the corresponding butynyloxy P1' analogs in the beta-sulfone piperidine hydroxamate series.