A. Spaltenstein et al., DESIGN AND SYNTHESIS OF NOVEL PROTEASE INHIBITORS - TRIPEPTIDE ALPHA',BETA'-EPOXYKETONES AS NANOMOLAR INACTIVATORS OF THE PROTEASOME, Tetrahedron letters, 37(9), 1996, pp. 1343-1346
Tripeptide alpha',beta'-epoxyketones were prepared stereospecifically
starting from Boc-[S]-phenylalanine. Diastereomer 5b inhibited the chy
motrypsin-like activity of porcine endothelial cell derived proteasome
at low nanomolar concentrations.