2. Academic Validation
  3. Synthesis and Anti-HCV Activity of Sugar-Modified Guanosine Analogues: Discovery of AL-611 as an HCV NS5B Polymerase Inhibitor for the Treatment of Chronic Hepatitis C

Synthesis and Anti-HCV Activity of Sugar-Modified Guanosine Analogues: Discovery of AL-611 as an HCV NS5B Polymerase Inhibitor for the Treatment of Chronic Hepatitis C

  • J Med Chem. 2020 Sep 24;63(18):10380-10395. doi: 10.1021/acs.jmedchem.0c00935.
Guangyi Wang 1,  Natalia Dyatkina 1,  Marija Prhavc 1,  Caroline Williams 1,  Vladimir Serebryany 1,  Yujian Hu 2,  Yongfei Huang 2,  Xiangyang Wu 2,  Tongqian Chen 3,  Wensheng Huang 3,  Vivek K Rajwanshi 1,  Jerome Deval 1,  Amy Fung 1,  Zhinan Jin 1,  Antitsa Stoycheva 1,  Kenneth Shaw 1,  Kusum Gupta 1,  Yuen Tam 1,  Andreas Jekle 1,  David B Smith 1,  Leonid Beigelman 1
Affiliations

Affiliations

  • 1 Janssen BioPharma, Inc., 260 E. Grand Avenue, South San Francisco, California 94080, United States.
  • 2 Department of Medicinal Chemistry, WuXi AppTec, Shanghai 200131, P. R. China.
  • 3 Pharmaron Beijing, Co. Ltd., No. 6, TaiHe Road, BDA, Beijing 100176, P. R. China.
PMID: 32816483 DOI: 10.1021/acs.jmedchem.0c00935
Abstract

Chronic hepatitis C (CHC) is a major liver disease caused by the hepatitis C virus. The current standard of care for CHC can achieve cure rates above 95%; however, the drugs in current use are administered for a period of 8-16 weeks. A combination of safe and effective drugs with a shorter treatment period is highly desirable. We report synthesis and biological evaluation of a series of 2',3'- and 2',4'-substituted guanosine nucleotide analogues. Their triphosphates exhibited potent inhibition of the HCV NS5B polymerase with IC50 as low as 0.13 μM. In the HCV replicon assay, the phosphoramidate prodrugs of these analogues demonstrated excellent activity with EC50 values as low as 5 nM. A lead compound AL-611 showed high levels of the nucleoside 5'-triphosphate in vitro in primary human hepatocytes and in vivo in dog liver following oral administration.

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