Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity

During a screening for antifungal secondary metabolites, six new mono-/bis-alkenoic acid derivatives (2–7) and one known alkenoic acid derivative (1) were isolated from an endophytic fungi Scopulariopsis candelabrum. Their chemical structures were identified by 1H-NMR, 13C-NMR, 2D NMR, and high-reso...

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Main Authors: Jun Tang, Xueshuang Huang, Ming-Hang Cao, Zhiyan Wang, Zhiyin Yu, Yijun Yan, Jian-Ping Huang, Li Wang, Sheng-Xiong Huang
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-01-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2021.812564/full
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author Jun Tang
Jun Tang
Jun Tang
Xueshuang Huang
Ming-Hang Cao
Zhiyan Wang
Zhiyan Wang
Zhiyin Yu
Yijun Yan
Jian-Ping Huang
Li Wang
Li Wang
Sheng-Xiong Huang
Sheng-Xiong Huang
author_facet Jun Tang
Jun Tang
Jun Tang
Xueshuang Huang
Ming-Hang Cao
Zhiyan Wang
Zhiyan Wang
Zhiyin Yu
Yijun Yan
Jian-Ping Huang
Li Wang
Li Wang
Sheng-Xiong Huang
Sheng-Xiong Huang
author_sort Jun Tang
collection DOAJ
description During a screening for antifungal secondary metabolites, six new mono-/bis-alkenoic acid derivatives (2–7) and one known alkenoic acid derivative (1) were isolated from an endophytic fungi Scopulariopsis candelabrum. Their chemical structures were identified by 1H-NMR, 13C-NMR, 2D NMR, and high-resolution mass spectrometry, as well as comparisons with previously reported literatures. Among them, fusariumesters C‒F (2–5) are bis-alkenoic acid derivatives dimerized by an ester bond, while acetylfusaridioic acid A (6) and fusaridioic acid D (7) are alkenoic acid monomers. All the isolates were submitted to an antifungal assay against Candida albicans and the corn pathogen Exserohilum turcicum using the filter paper agar diffusion method. As a result, only compound 1 decorating with β-lactone ring turned out to be active against these two tested fungi. The broth microdilution assay against Candida albicans showed the minimum inhibitory concentration (MIC) value of 1 to be 20 μg/ml, while the minimum inhibitory concentration value of the positive control (naystatin) was 10 μg/ml. And the half maximal inhibitory concentration (IC50) value (21.23 μg/ml) of 1 against Exserohilum turcicum was determined by analyzing its inhibition effect on the mycelial growth, using cycloheximide (IC50 = 46.70 μg/ml) as the positive control.
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spelling doaj.art-3f60683be2554ccfb3f1f923ccaf8ee42022-12-22T04:03:24ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-01-01910.3389/fchem.2021.812564812564Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal ActivityJun Tang0Jun Tang1Jun Tang2Xueshuang Huang3Ming-Hang Cao4Zhiyan Wang5Zhiyan Wang6Zhiyin Yu7Yijun Yan8Jian-Ping Huang9Li Wang10Li Wang11Sheng-Xiong Huang12Sheng-Xiong Huang13State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaHunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, ChinaSavaid Medical School, University of Chinese Academy of Sciences, Beijing, ChinaHunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, ChinaState Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaState Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaSavaid Medical School, University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, ChinaState Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaState Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, ChinaState Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaState Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, ChinaState Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, ChinaHunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Huaihua, ChinaDuring a screening for antifungal secondary metabolites, six new mono-/bis-alkenoic acid derivatives (2–7) and one known alkenoic acid derivative (1) were isolated from an endophytic fungi Scopulariopsis candelabrum. Their chemical structures were identified by 1H-NMR, 13C-NMR, 2D NMR, and high-resolution mass spectrometry, as well as comparisons with previously reported literatures. Among them, fusariumesters C‒F (2–5) are bis-alkenoic acid derivatives dimerized by an ester bond, while acetylfusaridioic acid A (6) and fusaridioic acid D (7) are alkenoic acid monomers. All the isolates were submitted to an antifungal assay against Candida albicans and the corn pathogen Exserohilum turcicum using the filter paper agar diffusion method. As a result, only compound 1 decorating with β-lactone ring turned out to be active against these two tested fungi. The broth microdilution assay against Candida albicans showed the minimum inhibitory concentration (MIC) value of 1 to be 20 μg/ml, while the minimum inhibitory concentration value of the positive control (naystatin) was 10 μg/ml. And the half maximal inhibitory concentration (IC50) value (21.23 μg/ml) of 1 against Exserohilum turcicum was determined by analyzing its inhibition effect on the mycelial growth, using cycloheximide (IC50 = 46.70 μg/ml) as the positive control.https://www.frontiersin.org/articles/10.3389/fchem.2021.812564/fullAlkenoic acid derivativespolyketidesMicroascaceaeScopulariopsis candelabrumantifungal activityCandida albicans
spellingShingle Jun Tang
Jun Tang
Jun Tang
Xueshuang Huang
Ming-Hang Cao
Zhiyan Wang
Zhiyan Wang
Zhiyin Yu
Yijun Yan
Jian-Ping Huang
Li Wang
Li Wang
Sheng-Xiong Huang
Sheng-Xiong Huang
Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
Frontiers in Chemistry
Alkenoic acid derivatives
polyketides
Microascaceae
Scopulariopsis candelabrum
antifungal activity
Candida albicans
title Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
title_full Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
title_fullStr Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
title_full_unstemmed Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
title_short Mono-/Bis-Alkenoic Acid Derivatives From an Endophytic Fungus Scopulariopsis candelabrum and Their Antifungal Activity
title_sort mono bis alkenoic acid derivatives from an endophytic fungus scopulariopsis candelabrum and their antifungal activity
topic Alkenoic acid derivatives
polyketides
Microascaceae
Scopulariopsis candelabrum
antifungal activity
Candida albicans
url https://www.frontiersin.org/articles/10.3389/fchem.2021.812564/full
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