Peptidomimetic ethyl propenoate covalent inhibitors of the enterovirus 71 3C protease: a P2–P4 study

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Peptidomimetic ethyl propenoate covalent inhibitors of the enterovirus 71 3C protease: a P2–P4 study
Title:
Peptidomimetic ethyl propenoate covalent inhibitors of the enterovirus 71 3C protease: a P2–P4 study
Journal Title:
Journal of Enzyme Inhibition and Medicinal Chemistry
Keywords:
Publication Date:
20 March 2015
Citation:
Peptidomimetic ethyl propenoate covalent inhibitors of the enterovirus 71 3C protease: a P2–P4 study Melgious J. Y. Ang, Qiu Ying Lau, Fui Mee Ng, Siew Wen Then, Anders Poulsen, Yuen Kuen Cheong, Zi Xian Ngoh, Yong Wah Tan, Jianhe Peng, Thomas H. Keller, Jeffrey Hill, Justin J. H. Chu, and C. S. Brian Chia Journal Of Enzyme Inhibition And Medicinal Chemistry Vol. 31 , Iss. 2,2016
Abstract:
Enterovirus 71 (EV71) is a highly infectious pathogen primarily responsible for Hand, Foot, and Mouth Disease, particularly among children. Currently, no approved antiviral drug has been developed against this disease. The EV71 3C protease is deemed an attractive drug target due to its crucial role in viral polyprotein processing. Rupintrivir, a peptide-based inhibitor originally developed to target the human rhinovirus 3C protease, was found to inhibit the EV71 3C protease. In this communication, we report the inhibitory activities of 30 Rupintrivir analogs against the EV71 3C protease. The most potent inhibitor, containing a P2 ring-constrained phenylalanine analog (compound 9), was found to be two-fold more potent than Rupintrivir (IC50 value 3.4 ± 0.4 versus 7.3 ± 0.8 μM). Our findings suggest that employing geometrically constrained residues in peptide-based protease inhibitors can potentially enhance their inhibitory activities.
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ISSN:
1475-6366
1475-6374
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