1
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Xu D, Lin GT, Huang JC, Sun J, Wang W, Liu X, Xu G. Discovery, Optimization, and Biological Evaluation of Novel Pyrazol-5-yl-phenoxybenzamide Derivatives as Potent Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39046798 DOI: 10.1021/acs.jafc.4c02685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
The diphenyl ether molecular pharmacophore has played a significant role in the development of fungicidal compounds. In this study, a variety of pyrazol-5-yl-phenoxybenzamide derivatives were synthesized and evaluated for their potential to act as succinate dehydrogenase inhibitors (SDHIs). The bioassay results indicate certain compounds to display a remarkable and broad-spectrum in their antifungal activities. Notably, compound 12x exhibited significant in vitro activities against Valsa mali, Gaeumannomyces graminis, and Botrytis cinerea, with EC50 values of 0.52, 1.46, and 3.42 mg/L, respectively. These values were lower or comparable to those of Fluxapyroxad (EC50 = 12.5, 1.93, and 8.33 mg/L, respectively). Additionally, compound 12x showed promising antifungal activities against Sclerotinia sclerotiorum (EC50 = 0.82 mg/L) and Rhizoctonia solani (EC50 = 1.86 mg/L), albeit lower than Fluxapyroxad (EC50 = 0.23 and 0.62 mg/L). Further in vivo experiments demonstrated compound 12x to possess effective protective antifungal activities against V. mali and S. sclerotiorum at a concentration of 100 mg/L, with inhibition rates of 66.7 and 89.3%, respectively. In comparison, Fluxapyroxad showed inhibition rates of 29.2 and 96.4% against V. mali and S. sclerotiorum, respectively. Molecular docking analysis revealed that compound 12x interacts with SDH through hydrogen bonding, π-cation, and π-π interactions, providing insights into the probable mechanism of action. Furthermore, compound 12x exhibited greater binding energy and SDH enzyme inhibitory activity than Fluxapyroxad (ΔGcal = -46.8 kcal/mol, IC50 = 1.22 mg/L, compared to ΔGcal = -41.1 kcal/mol, IC50 = 8.32 mg/L). Collectively, our results suggest that compound 12x could serve as a promising fungicidal lead compound for the development of more potent SDHIs for crop protection.
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Affiliation(s)
- Dan Xu
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Guo-Tai Lin
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jia-Chuan Huang
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jian Sun
- Institute of Agricultural Quality Standard and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, China
| | - Wei Wang
- School of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China
| | - Xili Liu
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Gong Xu
- Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education, Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural Affairs, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
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2
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Yuan Q, Fu W, Li X, Xu Z, Liu X, Li Z, Shao X. Design, Synthesis, Bioactivity, and Tentative Exploration of Action Mode for Benzyl Ester-Containing Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:16112-16127. [PMID: 38985656 DOI: 10.1021/acs.jafc.4c01033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
The active splicing strategy has witnessed improvement in bioactivity and antifungal spectra in pesticide discovery. Herein, a series of simple-structured molecules (Y1-Y53) containing chloro-substituted benzyl esters were designed using the above strategy. The structure-activity relationship (SAR) analysis demonstrated that the fatty acid fragment-structured esters were more effective than those containing an aromatic acid moiety or naphthenic acid part. Compounds Y36 and Y41, which featured a thiazole-4-acid moiety and trifluoromethyl aliphatic acid part, respectively, exhibited excellent in vivo curative activity (89.4%, 100 mg/L Y36) and in vitro fungicidal activity (EC50 = 0.708 mg/L, Y41) against Botrytis cinerea. Determination of antifungal spectra and analysis of scanning electron microscopy (SEM), membrane permeability, cell peroxidation, ergosterol content, oxalic acid pathways, and enzymatic assays were performed separately here. Compound Y41 is cost effective due to its simple structure and shows promise as a disease control candidate. In addition, Y41 might act on a novel target through a new pathway that disrupts the cell membrane integrity by inducing cell peroxidation.
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Affiliation(s)
- Qinglong Yuan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wen Fu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- National Key Laboratory of Green Pesticide, Guizhou University, Guiyang 550025, Guizhou, China
| | - Xiaoyan Li
- College of Humanities and Economic Management, Yantai Institute of China Agricultural University, Yantai 264670, Shandong, China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xili Liu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
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3
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Chen Y, Xu W, Du M, Bao L, Li J, Zhai Q, Yan D, Teng H. Design, Synthesis, and Antifungal Activities of Novel Potent Fluoroalkenyl Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14535-14546. [PMID: 38906830 DOI: 10.1021/acs.jafc.3c08693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
The development of new fungicide molecules is a crucial task for agricultural chemists to enhance the effectiveness of fungicides in agricultural production. In this study, a series of novel fluoroalkenyl modified succinate dehydrogenase inhibitors were synthesized and evaluated for their antifungal activities against eight fungi. The results from the in vitro antifungal assay demonstrated that compound 34 exhibited superior activity against Rhizoctonia solani with an EC50 value of 0.04 μM, outperforming commercial fluxapyroxad (EC50 = 0.18 μM) and boscalid (EC50 = 3.07 μM). Furthermore, compound 34 showed similar effects to fluxapyroxad on other pathogenic fungi such as Sclerotinia sclerotiorum (EC50 = 1.13 μM), Monilinia fructicola (EC50 = 1.61 μM), Botrytis cinerea (EC50 = 1.21 μM), and also demonstrated protective and curative efficacies in vivo on rapeseed leaves and tomato fruits. Enzyme activity experiments and protein-ligand interaction analysis by surface plasmon resonance revealed that compound 34 had a stronger inhibitory effect on succinate dehydrogenase compared to fluxapyroxad. Additionally, molecular docking and DFT calculation confirmed that the fluoroalkenyl unit in compound 34 could enhance its binding capacity with the target protein through p-π conjugation and hydrogen bond interactions.
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Affiliation(s)
- Yu Chen
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Weilong Xu
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Mian Du
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Longzhu Bao
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Jun Li
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Qianqian Zhai
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
| | - Dingce Yan
- Analytical and Testing Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Huailong Teng
- College of Chemistry, Huazhong Agricultural University, Wuhan 4430070 Hubei, P. R. China
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4
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Xie Q, Zhang S, Zhang Y, Zhang B, Wan F, Li Y, Jiang L. Synthesis, fungicidal activity and molecular docking of novel pyrazole-carboxamides bearing a branched alkyl ether moiety. Bioorg Med Chem Lett 2024; 108:129813. [PMID: 38788964 DOI: 10.1016/j.bmcl.2024.129813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Succinate dehydrogenase inhibitors are essential fungicides used in agriculture. To explore new pyrazole-carboxamides with high fungicidal activity, a series of N-substitutedphenyl-3-di/trifluoromethyl-1-methyl-1H-pyrazole-4-carboxamides bearing a branched alkyl ether moiety were designed and synthesized. The in vitro bioassay indicated that some target compounds displayed appreciable fungicidal activity. For example, compounds 5d and 5e showed high efficacy against S. sclerotiorum with EC50 values of 3.26 and 1.52 μg/mL respectively, and also exhibited excellent efficacy against R. solani with EC50 values of 0.27 and 0.06 μg/mL respectively, which were comparable or superior to penflufen. The further in vivo bioassay on cucumber leaves demonstrated that 5e provided strong protective activity of 94.3 % against S. sclerotiorum at 100 μg/mL, comparable to penflufen (99.1 %). Cytotoxicity assessment against human renal cell lines (239A cell) revealed that 5e had low cytotoxicity within the median effective concentrations. Docking study of 5e with succinate dehydrogenase illustrated that R-5e formed one hydrogen bond and two π-π stacking interactions with amino acid residues of target enzyme, while S-5e formed only one π-π stacking interaction with amino acid residue. This study provides a valuable reference for the design of new succinate dehydrogenase inhibitor.
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Affiliation(s)
- Qingyang Xie
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Shuai Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Yuanhong Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Bowen Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Fuxian Wan
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Ying Li
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
| | - Lin Jiang
- College of Chemistry and Material Science, Shandong Agricultural University, Tai'an 271018, China
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5
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Yu XH, Dong J, Fan CP, Chen MX, Li M, Zheng BF, Hu YF, Lin HY, Yang GF. Discovery and Development of 4-Hydroxyphenylpyruvate Dioxygenase as a Novel Crop Fungicide Target. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:19396-19407. [PMID: 38035573 DOI: 10.1021/acs.jafc.3c05260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Plant pathogenic fungi pose a significant threat to crop yields and quality, and the emergence of fungicide resistance has further exacerbated the problem in agriculture. Therefore, there is an urgent need for efficient and environmentally friendly fungicides. In this study, we investigated the antifungal activity of (+)-Usnic acid and its inhibitory effect on crop pathogenic fungal 4-hydroxyphenylpyruvate dioxygenases (HPPDs) and determined the structure of Zymoseptoria tritici HPPD (ZtHPPD)-(+)-Usnic acid complex. Thus, the antifungal target of (+)-Usnic acid and its inhibitory basis toward HPPD were uncovered. Additionally, we discovered a potential lead fungicide possessing a novel scaffold that displayed remarkable antifungal activities. Furthermore, our molecular docking analysis revealed the unique binding mode of this compound with ZtHPPD, explaining its high inhibitory effect. We concluded that HPPD represents a promising target for the control of phytopathogenic fungi, and the new compound serves as a novel starting point for the development of fungicides and dual-purpose pesticides.
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Affiliation(s)
- Xin-He Yu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Jin Dong
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Cheng-Peng Fan
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Meng-Xi Chen
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Min Li
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Bai-Feng Zheng
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Ya-Fang Hu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Hong-Yan Lin
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
| | - Guang-Fu Yang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, P. R. China
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6
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Cheng X, Xu Z, Cui H, Zhang Z, Chen W, Wang F, Li S, Liu Q, Wang D, Lv X, Chang X. Discovery of Pyrazole-5-yl-amide Derivatives Containing Cinnamamide Structural Fragments as Potential Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37922127 DOI: 10.1021/acs.jafc.3c04355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
To promote the development of novel agricultural succinate dehydrogenase inhibitor (SDHI) fungicides, we introduced cinnamamide and nicotinamide structural fragments into the structure of pyrazol-5-yl-amide by carbon chain extension and scaffold hopping, respectively, and synthesized a series of derivatives. The results of the biological activity assays indicated that most of the target compounds exhibited varying degrees of inhibitory activity against the tested fungi. Notably, compounds G22, G28, G34, G38, and G39 exhibited excellent in vitro antifungal activities against Valsa mali with EC50 values of 0.48, 0.86, 0.57, 0.73, and 0.87 mg/L, respectively, and this result was significantly more potent than boscalid (EC50 = 2.80 mg/L) and closer to the specialty control drug tebuconazole (EC50 = 0.30 mg/L). Compounds G22 and G34 also exhibited excellent in vivo protective and curative effects against V. mali at 40 mg/L. The SEM and TEM observations indicated that compounds G22 and G34 may affect normal V. mali mycelial morphology as well as the cellular ultrastructure. Molecular docking analysis results indicated that G22 and boscalid possessed a similar binding mode to that of SDH, and detailed SDH inhibition assays validated the feasibility of the designed compounds as potential SDH inhibitors. Compounds G22 and G3 were selected for theoretical calculations, and the terminal carboxylic acid group of this series of compounds may be a key region influencing the antifungal activity. Furthermore, toxicity tests on Apis mellifera l. revealed that compounds G22 and G34 exhibited low toxicity to A. mellifera l. populations. The above results demonstrated that these series of pyrazole-5-yl-amide derivatives are promising for development as potential low-risk drug-resistance agricultural SDHI fungicides.
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Affiliation(s)
- Xiang Cheng
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Zonghan Xu
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Hongyun Cui
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Zhen Zhang
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Wei Chen
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Fanglei Wang
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Shanlu Li
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Qixuan Liu
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Dandan Wang
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Xianhai Lv
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
- School of Science, Anhui Agricultural University, Hefei 230036, China
| | - Xihao Chang
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
- School of Science, Anhui Agricultural University, Hefei 230036, China
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7
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Yin YM, Sun ZY, Wang DW, Xi Z. Discovery of Benzothiazolylpyrazole-4-Carboxamides as Potent Succinate Dehydrogenase Inhibitors through Active Fragment Exchange and Link Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14471-14482. [PMID: 37775473 DOI: 10.1021/acs.jafc.3c03646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Succinate dehydrogenase (SDH) is an attractive target for developing green fungicides to manage agricultural pathogens in modern agriculture research. Herein, in this work, we report the discovery of benzothiazolylpyrazole-4-carboxamides I-III as potent SDH inhibitors using active fragment exchange and link approach. The results of the fungicidal activity assays showed that some of the synthesized compounds exhibited excellent inhibition against the tested fungi. Systematic structure-activity relationship studies led to the discovery of compound Ip, N-(1-((4,6-difluorobenzo[d]thiazol-2-yl)thio)propan-2-yl)-3-(difluoromethyl)-N-methoxy-1-methyl-1H-pyrazole-4-carboxamide, which showed higher fungicidal activity against Fusarium graminearum Schw (EC50 = 0.93 μg/mL) than the commercial fungicides thifluzamide (EC50 > 50 μg/mL) and boscalid (EC50 > 50 μg/mL). The molecular simulation studies suggested that hydrophobic interactions were the primary driving forces between ligands and SDH. Promisingly, we found that Ip could stimulate the growth of wheat seedlings and Arabidopsis thaliana and increase the biomass of the treated plants. Preliminary studies on the plant growth promoter mechanism of Ip indicated that it could increase nitrate reductase activity in planta, that, in turn, stimulates the growth of plants.
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Affiliation(s)
- Yan-Ming Yin
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Zong-Yue Sun
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Da-Wei Wang
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, PR China
| | - Zhen Xi
- State Key Laboratory of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, PR China
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8
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Zhou C, Sun X, Fu W, Li Z, Cheng J, Maienfisch P. Rational Exploration of Novel SDHI Fungicide through an Amide-β-ketonitrile Bioisosteric Replacement Strategy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5483-5495. [PMID: 36975160 DOI: 10.1021/acs.jafc.2c08606] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The identification of succinate dehydrogenase inhibitor (SDHI) fungicides bearing a novel scaffold is of great importance to control pathogenic fungi. Difluoromethyl-pyrazole β-ketonitrile derivatives were rationally designed through an innovative amide-β-ketonitrile bioisosteric replacement strategy and evaluated for their antifungal activities. In preliminary fungicidal screening, our new β-ketonitrile compounds showed outstanding in vitro activity. Compounds A7 and A14 exhibited EC50 values of 0.116 and 0.165 μg/mL against Sclerotinia sclerotiorum, respectively, and A14 also displayed an EC50 of 0.0774 μg/mL against Rhizoctonia solani. Furthermore, A14 exhibited moderate in vivo protective activity against rice sheath blight on rice plants. Results from SDH enzymatic assays demonstrated that A14 possesses significant inhibitory effect toward porcine heart SDH, with an IC50 value of 0.183 μM, which was 20-fold more potent than that of fluxapyroxad (IC50 = 3.76 μM). A docking study indicated that H-bonds, cation-π interactions, and edge-to-face π-π interactions play key roles in the binding of A14 with R. solani SDH. The CoMSIA model guided the approach to further structural optimizations and indicated that hydrophobic and steric substituents on the benzene ring have decisive effects on the fungicidal activity against R. solani. The present work describes for the first time the successful bioisosteric replacement of the common SDHI amide moiety by a β-ketonitrile group and highlights the potential of β-ketonitriles as an innovative novel SDHI subclass.
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Affiliation(s)
- Cong Zhou
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xujuan Sun
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wen Fu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
- CreInSol MCB, Aegertenstrasse 21, Rodersdorf CH-4118, Switzerland
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9
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Fang H, Chen Z, Liu Y, Zhang T, Chang J, Li Z, Zhang L, Sui J, Ru J, Gu Y, Hua X. Discovery of Aryloxy-, Arylthio-, and Arylamino-Containing Acethydrazides as Fungicidal Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:920-933. [PMID: 36534960 DOI: 10.1021/acs.jafc.2c06691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The development of new green fungicides is an effective way to solve the resistance of agricultural pathogens and plays an important role in promoting high-quality and sustainable development of modern agriculture. In this project, a series of aryloxy-, arylthio-, and arylamino-containing acethydrazide derivatives were designed, synthesized, and characterized by 1H nuclear magnetic resonance (NMR), 13C NMR, and high-resolution mass spectrometry (HRMS). The fungicidal bioassays indicated that some compounds showed excellent and broad-spectrum fungicidal activity, and the structure-activity relationship was discussed. The in vivo fungicidal activity demonstrated that compounds C4 and D8 exhibited good preventative effects against Fusarium graminearum infecting wheat leaves, of which the preventative activity of compound D8 was almost equal to that of the positive agents. Transmission electron microscopy (TEM) observation revealed that the plasma membrane in the C4-treated F. graminearum hyphal cells was severely contracted and separated with the cell wall, coupling with the visible lysosomes and the disappeared cytoplasm and organelles, which may be the reasons for the shriveled and even ruptured hyphae observed by scanning electron microscopy (SEM). Subsequently, transcriptomics and metabolomics were performed to further elucidate the fungicidal mechanism. The regulatory networks of differential genes and metabolites in plasma membrane-related sphingolipid metabolism, linoleic acid metabolism, α-linoleic acid metabolism, and arachidonic acid metabolism were constructed and elaborated. Additionally, preliminary investigation of seeding growth suggested that compounds C4 and D8 may have different degrees of influence on the growth indicators of wheat seedlings; however, this effect may be negligible as the plant grows.
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Affiliation(s)
- Hongbin Fang
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Zhanfang Chen
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Yang Liu
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Tiancheng Zhang
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Jing Chang
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Zizheng Li
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Lingxiao Zhang
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Junkang Sui
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
| | - Jing Ru
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, P. R. China
| | - Yucheng Gu
- Jealott's Hill International Research Centre, Syngenta Ltd., Bracknell RG42 6EY, U.K
| | - Xuewen Hua
- College of Agricultural Science and Engineering, Liaocheng University, No. 1, Hu'nan Road, Dongchangfu District, Liaocheng 252000, P. R. China
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Alghamdi S, Abbas F, Hussein R, Alhamzani A, El‐Shamy N. Spectroscopic characterization (IR, UV-Vis), and HOMO-LUMO, MEP, NLO, NBO Analysis and the Antifungal Activity for 4-Bromo-N-(2-nitrophenyl) benzamide; Using DFT Modeling and In silico Molecular Docking. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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11
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Liu C, Fei Q, Pan N, Wu W. Design, Synthesis, and Antifungal Activity of Novel 1,2,4-Triazolo[4,3-c]trifluoromethylpyrimidine Derivatives Bearing the Thioether Moiety. Front Chem 2022; 10:939644. [PMID: 35928214 PMCID: PMC9344801 DOI: 10.3389/fchem.2022.939644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/20/2022] [Indexed: 11/19/2022] Open
Abstract
Crop disease caused by fungi seriously affected food security and economic development. Inspired by the utilization of fungicide containing 1,2,4-triazole and trifluoromethylpyrimidine, a novel series of 1,2,4-triazolo[4,3-c]trifluoromethylpyrimidine derivatives bearing the thioether moiety were synthesized. Meanwhile, the antifungal activities of the title compounds were evaluated and most compounds exhibited obvious antifungal activities against cucumber Botrytis cinerea, strawberry Botrytis cinerea, tobacco Botrytis cinerea, blueberry Botrytis cinerea, Phytophthora infestans, and Pyricularia oryzae Cav. Among the compounds, 4, 5h, 5o, and 5r showed significant antifungal activities against three of the four Botrytis cinerea, which indicated the potential to become the leading structures or candidates for resistance to Botrytis cinerea.
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Lan W, Tang X, Yu J, Fei Q, Wu W, Li P, Luo H. Design, Synthesis, and Bioactivities of Novel Trifluoromethyl Pyrimidine Derivatives Bearing an Amide Moiety. Front Chem 2022; 10:952679. [PMID: 35910720 PMCID: PMC9334529 DOI: 10.3389/fchem.2022.952679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/13/2022] [Indexed: 11/17/2022] Open
Abstract
Twenty-three novel trifluoromethyl pyrimidine derivatives containing an amide moiety were designed and synthesized through four-step reactions and evaluated for their antifungal, insecticidal, and anticancer properties. Bioassay results indicated that some of the title compounds exhibited good in vitro antifungal activities against Botryosphaeria dothidea (B. dothidea), Phompsis sp., Botrytis cinereal (B. cinerea), Colletotrichum gloeosporioides (C. gloeosporioides), Pyricutaria oryzae (P. oryzae), and Sclerotinia sclerotiorum (S. sclerotiorum) at 50 μg/ml. Meanwhile, the synthesized compounds showed moderate insecticidal activities against Mythimna separata (M. separata) and Spdoptera frugiperda (S. frugiperda) at 500 μg/ml, which were lower than those of chlorantraniliprole. In addition, the synthesized compounds indicated certain anticancer activities against PC3, K562, Hela, and A549 at 5 μg/ml, which were lower than those of doxorubicin. Notably, this work is the first report on the antifungal, insecticidal, and anticancer activities of trifluoromethyl pyrimidine derivatives bearing an amide moiety.
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Affiliation(s)
- Wenjun Lan
- Food and Pharmaceutical Engineering Institute, Guiyang University, Guiyang, China
| | - Xuemei Tang
- Food and Pharmaceutical Engineering Institute, Guiyang University, Guiyang, China
| | - Jia Yu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
| | - Qiang Fei
- Food and Pharmaceutical Engineering Institute, Guiyang University, Guiyang, China
| | - Wenneng Wu
- Food and Pharmaceutical Engineering Institute, Guiyang University, Guiyang, China
- *Correspondence: Wenneng Wu, ; Pei Li, ; Heng Luo,
| | - Pei Li
- Qiandongnan Engineering and Technology Research Center for Comprehensive Utilization of National Medicine, Kaili University, Kaili, China
- *Correspondence: Wenneng Wu, ; Pei Li, ; Heng Luo,
| | - Heng Luo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China
- *Correspondence: Wenneng Wu, ; Pei Li, ; Heng Luo,
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Yang S, Peng H, Zhu J, Zhao C, Xu H. Design, synthesis, insecticidal activities and molecular docking of novel pyridylpyrazolo carboxylate derivatives. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuai Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University Guangzhou China
| | - Hongxiang Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University Guangzhou China
| | - Jinyi Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University Guangzhou China
| | - Chen Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University Guangzhou China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University Guangzhou China
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Luo B, Ning Y. Comprehensive Overview of Carboxamide Derivatives as Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:957-975. [PMID: 35041423 DOI: 10.1021/acs.jafc.1c06654] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Up to now, a total of 24 succinate dehydrogenase inhibitors (SDHIs) fungicides have been commercialized, and SDHIs fungicides were also one of the most active fungicides developed in recent years. Carboxamide derivatives represented an important class of SDHIs with broad spectrum of antifungal activities. In this review, the development of carboxamide derivatives as SDHIs with great significances were summarized. In addition, the structure-activity relationships (SARs) of antifungal activities of carboxamide derivatives as SDHIs was also summarized based on the analysis of the structures of the commercial SDHIs and lead compounds. Moreover, the cause of resistance of SDHIs and some solutions were also introduced. Finally, the development trend of SDHIs fungicides was prospected. We hope this review will give a guide for the development of novel SDHIs fungicides in the future.
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Affiliation(s)
- Bo Luo
- College of Life Sciences, Xinyang Normal University, Tea Plant Biology Key Laboratory of Henan Province, Xinyang 464000, China
| | - Yuli Ning
- College of Life Sciences, Xinyang Normal University, Tea Plant Biology Key Laboratory of Henan Province, Xinyang 464000, China
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