Inhibition of norovirus 3CL protease by bisulfite adducts of transition state inhibitors
Mandadapu, Sivakoteswara Rao Gunnam, Mallikarjuna Reddy Tiew, Kok-Chuan Uy, Roxanne Adeline Z. Prior, Allan M. Alliston, Kevin R. Hua, Duy H. Kim, Yunjeong Chang, Kyeong-Ok Groutas, William C.
Mandadapu, Sivakoteswara Rao
Gunnam, Mallikarjuna Reddy
Tiew, Kok-Chuan
Uy, Roxanne Adeline Z.
Prior, Allan M.
Alliston, Kevin R.
Hua, Duy H.
Kim, Yunjeong
Chang, Kyeong-Ok
Groutas, William C.
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2013-01
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Norovirus 3CL protease,Bisulfite salt adducts,Transition state inhibitors
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Mandadapu, Sivakoteswara Rao; Gunnam, Mallikarjuna Reddy; Tiew, Kok-Chuan; Uy, Roxanne Adeline Z.; Prior, Allan M.; Alliston, Kevin R.; Hua, Duy H.; Kim, Yunjeong; Chang, Kyeong-Ok; Groutas, William C. 2013. Inhibition of norovirus 3CL protease by bisulfite adducts of transition state inhibitors. Bioorganic & medicinal Chemistry Letters, v.23 no.1 pp.62-65
Abstract
Noroviruses are the most common cause of acute viral gastroenteritis, accounting for >21 million cases annually in the US alone. Norovirus infections constitute an important health problem for which there are no specific antiviral therapeutics or vaccines. In this study, a series of bisulfite adducts derived from representative transition state inhibitors (dipeptidyl aldehydes and alpha-ketoamides) was synthesized and shown to exhibit anti-norovirus activity in a cell-based replicon system. The ED50 of the most effective inhibitor was 60 nM. This study demonstrates for the first time the utilization of bisulfite adducts of transition state inhibitors in the inhibition of norovirus 3C-like protease in vitro and in a cell-based replicon system. The approach described herein can be extended to the synthesis of the bisulfite adducts of other classes of transition state inhibitors of serine and cysteine proteases, such as alpha-ketoheterocycles and alpha-ketoesters.
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Elsevier
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Bioorganic and Medicinal Chemistry Letters
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0960-894X