Related Experiment Video
Updated: Jul 8, 2026

Quantitative Structure-Activity Relationship, Activity Prediction, and Molecular Dynamics of Non-nucleotide Reverse Transcriptase Inhibitors
Published on: May 9, 2025
Recent patents on nucleoside and nucleotide inhibitors for HCV
Jae H Shim1, Zhi Hong, Jim Z Wu
1Drug Discovery, Valeant Pharmaceuticals International, 3300 Hyland Avenue, Costa Mesa, California 92626, USA. jshim@valeant.com
Abstract:
Hepatitis C virus (HCV) infection is a leading cause of liver diseases such as cirrhosis and hepatocellular carcinoma. There are estimated 170 million people worldwide chronically infected with the virus. The lack of highly effective and safe therapeutics for HCV infection has spurred intensive efforts to develop anti-HCV drugs as evidenced by the large number of new patent applications filed each year. Nucleoside and nucleotide inhibitors are the analogues of DNA or RNA substrates, and they inhibit viral polymerases by acting as chain terminators, viral mutagens, or simple competitive inhibitors. The successful development of various nucleoside and nucleotide inhibitors for the treatment of HIV and HBV infections has prompted the drug industry to seek similar strategies for HCV. This review summarizes recently issued or published patents covering nucleoside and nucleotide inhibitors for HCV. The claimed chemical structures and available biological activities, mechanism of action, and drug resistance profiles are discussed. The development status of several promising nucleoside inhibitors is also described.
Insights
New patents show promising nucleoside and nucleotide inhibitors for Hepatitis C virus (HCV) infection. These drugs target viral polymerases, offering potential new treatments for the 170 million people chronically infected worldwide.
Area of Science:
- Hepatology
- Virology
- Medicinal Chemistry
Background:
- Hepatitis C virus (HCV) infection is a major global health concern, leading to liver cirrhosis and cancer.
- An estimated 170 million individuals worldwide suffer from chronic HCV infection.
- Current therapeutic options for HCV are limited, driving the need for novel drug development.
Purpose of the Study:
- To review recent patents on nucleoside and nucleotide inhibitors for HCV treatment.
- To analyze the chemical structures, biological activities, and mechanisms of action of these inhibitors.
- To discuss drug resistance profiles and the development status of promising candidates.
Main Methods:
- Comprehensive review of patent literature concerning nucleoside and nucleotide inhibitors for HCV.
- Analysis of claimed chemical entities and their associated biological data.
- Evaluation of reported mechanisms of action and drug resistance patterns.
Main Results:
- Numerous patents have been filed for novel nucleoside and nucleotide inhibitors targeting HCV.
- These compounds function as chain terminators, mutagens, or competitive inhibitors of viral polymerases.
- Several promising nucleoside inhibitors are in various stages of development, with detailed activity and resistance data.
Conclusions:
- Nucleoside and nucleotide inhibitors represent a significant area of research and development for anti-HCV therapeutics.
- Patent activity highlights ongoing innovation in designing effective and safe treatments for HCV.
- Further development of these inhibitors holds promise for improving outcomes for chronically infected patients.
Related Concept Videos
Antiviral Nucleoside Inhibitors
Inhibitors of Viral Protein Synthesis
Inhibitors Of Virion Release
Inhibitors of Virion Maturation and Assembly
Subviral Agents
Hepatitis

