1
|
Tao S, Zhu D, Tie Q, Wu Y, Zhang J, Zheng X, Feng W. Five new compounds from the stems of Ephedra equisetina. Fitoterapia 2024; 175:105907. [PMID: 38479617 DOI: 10.1016/j.fitote.2024.105907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 03/18/2024]
Abstract
Five new compounds were identified from the stems of Ephedra equisetina Bunge. Their structures were elucidated by spectroscopic methods, involving UV, IR, NMR spectrum and HRESIMS analyses. The absolute configuration of compound 2 was proved by comparing their experimental and calculated ECD spectrum. The vitro bioactive assay of all compounds suggested that compound 1, 3, 4, 5 and 6 may have potential anti-asthmatic activities.
Collapse
Affiliation(s)
- Siqi Tao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China
| | - Denghui Zhu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China
| | - Qimei Tie
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China
| | - Yuanyuan Wu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China
| | - Jingke Zhang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China
| | - Xiaoke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R. China, China
| | - Weisheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province China, Zhengzhou 450046, China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P.R. China, China.
| |
Collapse
|
2
|
Sartiva H, Nishiwaki H, Akiyama K, Yamauchi S. Regiospecific and Enantiospecific Effects of the β-Benzyl-α-benzylidene-γ-butyrolactone Structure on Phytotoxic Fungi. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6738-6746. [PMID: 37083414 DOI: 10.1021/acs.jafc.3c00516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Novel derivatives of E-β-benzyl-α-benzylidene-γ-butyrolactone (3-benzyl-2-benzylidene-4-butanolide) with lignano-9,9'-lactone structures were developed as anti-phytopathogenic fungal compounds. Their regiospecific and enantiospecific characteristics were determined, with the E-form and 3R-configuration showing higher activities against the Alternaria alternata Japanese pear pathotype. By the syntheses of benzyl compounds instead of benzylidene and aromatic derivatives, followed by an bioassay experiment, the importance of the benzylidene structure and effects of the substituents of the aromatic ring were clarified. The (2-OCH3, 4'-CH3/4'-CF3)-derivatives, 19 and 25, and (2-OCH3, 6-CH3/6-F/6-Br, 4'-OCH3)-derivatives, 34, 38, and 42, were more effective with EC50 values of 0.1-0.3 μM. It was assumed that the 2-OCH3 group, a hydrophobic group at the 6-position, and some size of the hydrophobic group at the 4'-position were necessary for the increased activity.
Collapse
Affiliation(s)
- Hazna Sartiva
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Hisashi Nishiwaki
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Koichi Akiyama
- Integrated Center for Sciences, Ehime University, 3-5-7 Tarumi, Tarumi Station, Matsuyama, Ehime 790-8566, Japan
| | - Satoshi Yamauchi
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| |
Collapse
|
3
|
Xu R, Gu S, Chen K, Chen J, Wang Y, Gao Y, Shang S, Song Z, Song J, Li J. Discovery of rosin-based acylhydrazone derivatives as potential antifungal agents against rice Rhizoctonia solani for sustainable crop protection. PEST MANAGEMENT SCIENCE 2023; 79:655-665. [PMID: 36223125 DOI: 10.1002/ps.7232] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/28/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND The use of fungicides to protect crops from diseases is an effective method, and novel environmentally friendly plant-derived fungicides with enhanced performance and low toxicity are urgent requirements for sustainable agriculture. RESULTS Two kinds of rosin-based acylhydrazone compounds were designed and prepared. Based on the antifungal activity assessment against Rhizoctonia solani, Fusarium oxysporum, Phytophthora capsici, Sclerotinia sclerotiorum, and Botrytis cinerea, acylhydrazone derivatives containing a thiophene ring were screened and showed an inhibitory effect on rice R. solani. Among them, Compound 4n, with an electron-withdrawing group on the benzene ring structure attached to the thiophene ring, showed optimal activity, and the EC50 value was 0.981 mg L-1 , which was lower than that of carbendazim. Furthermore, it was indicated that 4n could affect the mycelial morphology, cell membrane permeability and microstructure, cause the generation of reactive oxygen species in fungal cells, and damage the nucleus and mitochondrial physiological function, resulting in the cell death of R. solani. Meanwhile, Compound 4n exhibited a better therapeutic effect on in vivo rice plants. However, the induction activity of 4n on the defense enzyme in rice leaf sheaths showed that 4n stimulates the initial resistance of rice plants by removing active oxygen, thereby protecting the cell membrane or enhancing the strength of the cell wall. Through the quantitative structure-activity relationship study, the quantitative chemical and electrostatic descriptors significantly affect the binding of 4n with the receptor, which improves its antifungal activity. CONCLUSION This study provides a basis for exploiting potential rosin-based fungicides in promoting sustainable crop protection. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Renle Xu
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Shihao Gu
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Kun Chen
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Jinyu Chen
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Yong Wang
- Department of Agricultural Pharmacology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanqing Gao
- Department of Agricultural Pharmacology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
| | - Shibin Shang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, Jiangsu, China
| | - Zhanqian Song
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, Jiangsu, China
| | - Jie Song
- Department of Chemistry and Biochemistry, University of Michigan-Flint, Flint, MI, USA
| | - Jian Li
- Shaanxi Key Laboratory of Economic Plant Resources Development and Utilization, College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| |
Collapse
|
4
|
Hu D, Yu S, Yu D, Liu N, Tang Y, Fan Y, Wang C, Wu A. Biogenic Trichoderma harzianum-derived selenium nanoparticles with control functionalities originating from diverse recognition metabolites against phytopathogens and mycotoxins. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106748] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
5
|
Dan WJ, Tuong TML, Wang DC, Li D, Zhang AL, Gao JM. Natural products as sources of new fungicides (V): Design and synthesis of acetophenone derivatives against phytopathogenic fungi in vitro and in vivo. Bioorg Med Chem Lett 2018; 28:2861-2864. [DOI: 10.1016/j.bmcl.2018.07.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 07/12/2018] [Accepted: 07/18/2018] [Indexed: 11/26/2022]
|