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Updated: Aug 30, 2026

Peptide-based Identification of Functional Motifs and their Binding Partners
Published on: June 30, 2013
Novel non-peptide inhibitors targeting death receptor-mediated apoptosis
Hideaki Kakeya1, Yasunobu Miyake, Mitsuru Shoji
1Antibiotics Laboratory, RIKEN Discovery Research Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. hkakeya@riken.jp
Abstract:
We have previously reported that ECH, (2R, 3R, 4S)-2,3-epoxy-4-hydroxy-5-hydroxymethyl-6-(1E)-propenyl-cyclohex-5-en-1-one inhibits Fas-mediated apoptosis by blocking self-activation of pro-caspase-8 in the death-inducing signaling complex (DISC). A series of ECH derivatives were asymmetrically synthesized via key synthetic intermediates obtained from lipase-catalyzed kinetic resolution. Inhibitory activities of the derivatives towards death receptor-mediated apoptosis both in type I and type II cells were investigated, revealing that novel non-peptide inhibitors, RKTS-33 and RKTS-34, are effective as ECH.
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