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Anti-influenza triterpenoid saponins (saikosaponins) from the roots of Bupleurum marginatum var. stenophyllum

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  • Anti-influenza triterpenoid saponins (saikosaponins) from the roots of Bupleurum marginatum var. stenophyllum

    Bioorg Med Chem Lett. 2017 Mar 7. pii: S0960-894X(17)30247-0. doi: 10.1016/j.bmcl.2017.03.015. [Epub ahead of print]
    Anti-influenza triterpenoid saponins (saikosaponins) from the roots of Bupleurum marginatum var. stenophyllum.

    Fang W1, Yang YJ1, Guo BL2, Cen S3.
    Author information

    Abstract

    This study to investigate antiviral components from the roots of Bupleurum marginatum var. stenophyllum led to the isolation of five novel saikosaponins, namely 6″-O-crotonyl-saikosaponin a (1), tibesaikosaponin I (2), tibesaikosaponin II (3), tibesaikosaponin III (4), tibesaikosaponin IV (5), along with 9 known analogues (6-14). Their structures were established by spectral data analyses (IR, MS, 1D and 2D NMR) and by comparison of spectral data with those of the related known compounds. Antiviral testing of all compounds against influenza A virus A/WSN/33 (H1N1) in 293TGluc cells showed that nepasaikosaponin k (12), saikosaponin n (13) and saikosaponin h (14) behaved more potent inhibitory activity and selectivity than the positive control, Ribavirin. The preliminary structure-activity relationship studies suggest that the 13, 28-epoxy group, the type of sugar chain and the type of olefinic bonds are significant for antiviral activity and selectivity.
    Copyright ? 2017 Elsevier Ltd. All rights reserved.


    KEYWORDS:

    Anti-influenza; Bupleurum marginatum var. stenophyllum; Saikosaponins

    PMID: 28314599 DOI: 10.1016/j.bmcl.2017.03.015
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