TABLE 1.
Inhibition of CL, CB, LmCPB2.8, and LmaCatB, antileishmanial activity against L. major promastigotes, and cytotoxicity by trans-aziridine-2,3-dicarboxylates 13b, 13e, and s1 to s38c

Diastereomeric ratio (dr) = 1:0.59.
Diastereomeric ratio (dr) = 1:0.55.
Bn, benzyl ester; Et, ethyl ester; pBr-Bn, para-bromo-benzylester; NI, no inhibition; ND, not determined; NDp, not determined because of precipitation; J774.1, macrophage cell line; Nip, nipecotic acid; CB, cathepsin B; CL, cathepsin L.