Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity

In our continuing efforts toward the design of novel pentacyclic triterpene derivatives as potential anti-influenza virus entry inhibitors, a series of homogeneous heptavalent glycyrrhetinic acid derivatives based on β-cyclodextrin scaffold were designed and synthesized by click chemistry. The struc...

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Main Authors: Shuobin Liang, Xinyuan Ma, Man Li, Yanliang Yi, Qianqian Gao, Yongmin Zhang, Lihe Zhang, Demin Zhou, Sulong Xiao
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-04-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2022.836955/full
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author Shuobin Liang
Xinyuan Ma
Man Li
Yanliang Yi
Qianqian Gao
Yongmin Zhang
Lihe Zhang
Demin Zhou
Demin Zhou
Demin Zhou
Sulong Xiao
author_facet Shuobin Liang
Xinyuan Ma
Man Li
Yanliang Yi
Qianqian Gao
Yongmin Zhang
Lihe Zhang
Demin Zhou
Demin Zhou
Demin Zhou
Sulong Xiao
author_sort Shuobin Liang
collection DOAJ
description In our continuing efforts toward the design of novel pentacyclic triterpene derivatives as potential anti-influenza virus entry inhibitors, a series of homogeneous heptavalent glycyrrhetinic acid derivatives based on β-cyclodextrin scaffold were designed and synthesized by click chemistry. The structure was unambiguously characterized by NMR, IR, and MALDI-TOF-MS measurements. Seven conjugates showed sufficient inhibitory activity against influenza virus infection based on the cytopathic effect reduction assay with IC50 values in the micromolar range. The interactions of conjugate 37, the most potent compound (IC50 = 2.86 μM, CC50 > 100 μM), with the influenza virus were investigated using the hemagglutination inhibition assay. Moreover, the surface plasmon resonance assay further confirmed that compound 37 bound to the influenza HA protein specifically with a dissociation constant of 5.15 × 10−7 M. Our results suggest the promising role of β-cyclodextrin as a scaffold for preparing a variety of multivalent compounds as influenza entry inhibitors.
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spelling doaj.art-63e56b202e9a40899d763e8c4dde96792022-12-21T19:06:57ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-04-011010.3389/fchem.2022.836955836955Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza ActivityShuobin Liang0Xinyuan Ma1Man Li2Yanliang Yi3Qianqian Gao4Yongmin Zhang5Lihe Zhang6Demin Zhou7Demin Zhou8Demin Zhou9Sulong Xiao10State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaSorbonne Université, Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Paris, FranceState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaInstitute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, ChinaNingbo Institute of Marine Medicine, Peking University, Ningbo, ChinaState Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, ChinaIn our continuing efforts toward the design of novel pentacyclic triterpene derivatives as potential anti-influenza virus entry inhibitors, a series of homogeneous heptavalent glycyrrhetinic acid derivatives based on β-cyclodextrin scaffold were designed and synthesized by click chemistry. The structure was unambiguously characterized by NMR, IR, and MALDI-TOF-MS measurements. Seven conjugates showed sufficient inhibitory activity against influenza virus infection based on the cytopathic effect reduction assay with IC50 values in the micromolar range. The interactions of conjugate 37, the most potent compound (IC50 = 2.86 μM, CC50 > 100 μM), with the influenza virus were investigated using the hemagglutination inhibition assay. Moreover, the surface plasmon resonance assay further confirmed that compound 37 bound to the influenza HA protein specifically with a dissociation constant of 5.15 × 10−7 M. Our results suggest the promising role of β-cyclodextrin as a scaffold for preparing a variety of multivalent compounds as influenza entry inhibitors.https://www.frontiersin.org/articles/10.3389/fchem.2022.836955/fullglycyrrhetinic acidβ-cyclodextrininfluenza virusmultivalencyhemagglutinin
spellingShingle Shuobin Liang
Xinyuan Ma
Man Li
Yanliang Yi
Qianqian Gao
Yongmin Zhang
Lihe Zhang
Demin Zhou
Demin Zhou
Demin Zhou
Sulong Xiao
Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
Frontiers in Chemistry
glycyrrhetinic acid
β-cyclodextrin
influenza virus
multivalency
hemagglutinin
title Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
title_full Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
title_fullStr Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
title_full_unstemmed Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
title_short Novel β-Cyclodextrin-Based Heptavalent Glycyrrhetinic Acid Conjugates: Synthesis, Characterization, and Anti-Influenza Activity
title_sort novel β cyclodextrin based heptavalent glycyrrhetinic acid conjugates synthesis characterization and anti influenza activity
topic glycyrrhetinic acid
β-cyclodextrin
influenza virus
multivalency
hemagglutinin
url https://www.frontiersin.org/articles/10.3389/fchem.2022.836955/full
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