Optimization of Potent Hepatitis C Virus NS3 Helicase Inhibitors Isolated from the Yellow Dyes Thioflavine S and Primuline
摘要:
A screen for hepatitis C virus (HCV) NS3 helicase inhibitors revealed that the commercial dye thioflavine S was the most potent inhibitor of NS3-catalyzed DNA and RNA unwinding in the 827-compound National Cancer Institute Mechanistic Set. Thioflavine S and the related dye primuline were separated here into their pure components, all of which were oligomers of substituted benzothiazoles. The most potent compound (P4), a benzothiazole tetramer, inhibited unwinding >50% at 2 +/- 1 mu M, inhibited the subgenomic HCV replicon at 10 mu M, and was not toxic at 100 mu M. Because P4 also interacted with DNA, more specific analogues were synthesized from the abundant dimeric component of primuline. Some of the 32 analogues prepared retained ability to inhibit HCV helicase but did not appear to interact with DNA. The most potent of these specific helicase inhibitors (compound 17) was active against the replicon and inhibited the helicase more than 50% at 2.6 +/- 1 mu M.
[EN] HCV HELICASE INHIBITORS AND METHODS OF USE THEREOF<br/>[FR] INHIBITEURS DE L'HÉLICASE DU VHC ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV KANSAS
公开号:WO2013036749A1
公开(公告)日:2013-03-14
The present invention discloses thioflavine S and primuline derivatives which inhibit hepatitis C virus helicase and protease activity. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are useful as antiviral agents. The present invention further relates to pharmaceutical compositions containing the aforementioned compounds and methods of treating an HCV infection.
HCV Helicase Inhibitors and Methods of Use Thereof
申请人:Aube Jeffrey
公开号:US20140227225A1
公开(公告)日:2014-08-14
The present invention discloses thioflavine S and primuline derivatives which inhibit hepatitis C virus helicase and protease activity. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are useful as antiviral agents. The present invention further relates to pharmaceutical compositions containing the aforementioned compounds and methods of treating an HCV infection.
Optimization of Potent Hepatitis C Virus NS3 Helicase Inhibitors Isolated from the Yellow Dyes Thioflavine S and Primuline
作者:Kelin Li、Kevin J. Frankowski、Craig A. Belon、Ben Neuenswander、Jean Ndjomou、Alicia M. Hanson、Matthew A. Shanahan、Frank J. Schoenen、Brian S. J. Blagg、Jeffrey Aubé、David N. Frick
DOI:10.1021/jm300021v
日期:2012.4.12
A screen for hepatitis C virus (HCV) NS3 helicase inhibitors revealed that the commercial dye thioflavine S was the most potent inhibitor of NS3-catalyzed DNA and RNA unwinding in the 827-compound National Cancer Institute Mechanistic Set. Thioflavine S and the related dye primuline were separated here into their pure components, all of which were oligomers of substituted benzothiazoles. The most potent compound (P4), a benzothiazole tetramer, inhibited unwinding >50% at 2 +/- 1 mu M, inhibited the subgenomic HCV replicon at 10 mu M, and was not toxic at 100 mu M. Because P4 also interacted with DNA, more specific analogues were synthesized from the abundant dimeric component of primuline. Some of the 32 analogues prepared retained ability to inhibit HCV helicase but did not appear to interact with DNA. The most potent of these specific helicase inhibitors (compound 17) was active against the replicon and inhibited the helicase more than 50% at 2.6 +/- 1 mu M.