Potent fluoromethyl ketone inhibitors of recombinant human calpain I

Bioorganic & Medicinal Chemistry Letters
1996.0

Abstract

We report on a series of potent and selective dipeptide fluoromethyl ketone inhibitors of recombinant human calpain I. Compound 4f, having a tetrahydroisoquinoline containing urea motif as N-terminus capping group, is the most potent member (kowtI = 276,000 M 1 s "1) of this class. This compound was shown to prefer calpain I by >36-fold and approximately 4-fold over the related cysteine proteases, cathepsin B and cathepsin L, respectively.

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