Design and synthesis of dipeptidyl α′,β′-epoxy ketones, potent irreversible inhibitors of the cysteine protease cruzain
作者:William R Roush、Florenci V González、James H McKerrow、Elizabeth Hansell
DOI:10.1016/s0960-894x(98)00494-6
日期:1998.10
The dipeptidyl epoxy ketone 4 is a potent, irreversibleinhibitor of cruzain, a cysteineprotease isolated from Trypanosoma cruzi, with an apparent second order inhibition rate constant of 330,000 sec-1M-1.
form a cyclichemiacetal, was identified as calpain inhibitors. The placement of isobutyl group at the 2-position of the 3-morpholinone was the most effective modification for inhibiting micro- and m-calpains. Substitutions of benzyl at the 5-position in the S-configuration had virtually no effect on inhibitory activity. Several compounds showed appreciable selectivity for calpains over cathepsin B. NMR