2. Academic Validation
  3. Incorporation of privileged structures into 3-O-β-chacotriosyl ursolic acid can enhance inhibiting the entry of the H5N1 virus

Incorporation of privileged structures into 3-O-β-chacotriosyl ursolic acid can enhance inhibiting the entry of the H5N1 virus

  • Bioorg Med Chem Lett. 2019 Sep 15;29(18):2675-2680. doi: 10.1016/j.bmcl.2019.07.028.
Hui Li 1,  Lizhu Chen 2,  Sumei Li 3,  Yixian Liao 4,  Lei Wang 1,  Zhihao Liu 1,  Shuwen Liu 5,  Gaopeng Song 6
Affiliations

Affiliations

  • 1 College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
  • 2 School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
  • 3 Department of Human Anatomy, School of Medicine, Jinan University, Guangzhou 510632, China.
  • 4 College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China.
  • 5 School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China. Electronic address: liusw@smu.edu.cn.
  • 6 College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. Electronic address: songgp1021@scau.edu.cn.
PMID: 31371135 DOI: 10.1016/j.bmcl.2019.07.028
Abstract

The glycoprotein hemagglutinin of Influenza Virus plays a key role in the initial stage of virus Infection, making it a potential target for novel influenza viruses entry inhibitors. Two "privileged fragments", 2-(piperidin-1-yl)ethan-1-amine and 2-(1,3-oxazinan-3-yl)ethan-1-amine were integrated into 3-O-β-chacotriosyl ursolic acid producing new derivatives 5 and 6 with improved activity against IAVs in vitro. Mechanistically, compound 6 was effective in inhibiting Infection of H1-, H3-, and H5-typed influenza A viruses by interfering with the viral hemagglutinin. Furthermore, the docking studies were in agreement with the Antiviral data. These results showed that the title compound 6 as a new lead compound was meriting further optimization and development.

Keywords

3-O-β-chacotriosyl ursolic acid; Entry inhibitors; Hemagglutinin; Influenza viruses.

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