Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>

Two triterpenes, ganoaustralins A (<b>1</b>) and B (<b>2</b>), featuring unprecedented 6/6/6/5/6 scaffolds were isolated from the fruiting bodies of the mushroom <i>Ganoderma australe</i>. The structures were determined by extensive NMR and HRESIMS spectroscopic a...

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Main Authors: Lin Zhou, He-Ping Chen, Xinyang Li, Ji-Kai Liu
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Pharmaceuticals
Subjects:
Online Access:https://www.mdpi.com/1424-8247/15/12/1520
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author Lin Zhou
He-Ping Chen
Xinyang Li
Ji-Kai Liu
author_facet Lin Zhou
He-Ping Chen
Xinyang Li
Ji-Kai Liu
author_sort Lin Zhou
collection DOAJ
description Two triterpenes, ganoaustralins A (<b>1</b>) and B (<b>2</b>), featuring unprecedented 6/6/6/5/6 scaffolds were isolated from the fruiting bodies of the mushroom <i>Ganoderma australe</i>. The structures were determined by extensive NMR and HRESIMS spectroscopic analysis. The absolute configuration of the C-25 in ganoaustralin A was assigned by the phenylglycine methyl ester (PGME) method. The relative and absolute configurations of the polycyclic backbones were determined by NMR and ECD calculations, respectively. The plausible biosynthetic pathways of ganoaustralins A and B were proposed. Ganoaustralin B showed weak inhibition against <i>β</i>-secretase 1.
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spelling doaj.art-3151ae57ee5f4ad2a1c5978a0a50d3712023-11-24T17:16:36ZengMDPI AGPharmaceuticals1424-82472022-12-011512152010.3390/ph15121520Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>Lin Zhou0He-Ping Chen1Xinyang Li2Ji-Kai Liu3School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, ChinaSchool of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, ChinaSchool of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, ChinaSchool of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, ChinaTwo triterpenes, ganoaustralins A (<b>1</b>) and B (<b>2</b>), featuring unprecedented 6/6/6/5/6 scaffolds were isolated from the fruiting bodies of the mushroom <i>Ganoderma australe</i>. The structures were determined by extensive NMR and HRESIMS spectroscopic analysis. The absolute configuration of the C-25 in ganoaustralin A was assigned by the phenylglycine methyl ester (PGME) method. The relative and absolute configurations of the polycyclic backbones were determined by NMR and ECD calculations, respectively. The plausible biosynthetic pathways of ganoaustralins A and B were proposed. Ganoaustralin B showed weak inhibition against <i>β</i>-secretase 1.https://www.mdpi.com/1424-8247/15/12/1520<i>Ganoderma australe</i> (Fr.) Pat.Polyporaceaetriterpenesanti-BACE1 activity
spellingShingle Lin Zhou
He-Ping Chen
Xinyang Li
Ji-Kai Liu
Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
Pharmaceuticals
<i>Ganoderma australe</i> (Fr.) Pat.
Polyporaceae
triterpenes
anti-BACE1 activity
title Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
title_full Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
title_fullStr Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
title_full_unstemmed Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
title_short Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom <i>Ganoderma australe</i>
title_sort ganoaustralins a and b unusual aromatic triterpenes from the mushroom i ganoderma australe i
topic <i>Ganoderma australe</i> (Fr.) Pat.
Polyporaceae
triterpenes
anti-BACE1 activity
url https://www.mdpi.com/1424-8247/15/12/1520
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