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Huang Y, Li Z, Chen Y, Li W, Wei S, Ji Z. Synthesis and Herbicidal Activity of 2-(2-Oxo-3-pyridyl-benzothiazol-6-yloxy)hexanoic Acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7457-7463. [PMID: 38527909 DOI: 10.1021/acs.jafc.3c08213] [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: 03/27/2024]
Abstract
The discovery of a lead compound is fundamental to herbicide innovation, but the limited availability of valuable lead compounds has hindered their development in recent years. By utilizing the structural diversity-oriented inactive group strategy, 3-(2-pyridyl)-benzothiazol-2-one was identified as a promising lead scaffold for herbicides, starting from benzothiazole which is an inactive moiety commonly found in herbicides such as mefenacet, benazolin, benzthiazuron, and fenthiaprop-ethyl. To investigate the structure-activity relationship (SAR) of these chemicals, a series of 2-(2-oxo-3-pyridyl-benzothiazol-6-yloxy)hexanoic acid derivatives (VI01 ∼ VI28) were synthesized through classical nucleophilic SNAr reaction using halogenated pyridines and 6-methoxybenzothiazole-2-one. The chemical structures of all the title compounds were confirmed by NMR and MS analysis. Petri dish assays indicated that many compounds exhibited potent herbicidal activity against both broad-leaf weeds and grass weeds at 1.0 mg/L. The SAR analysis revealed that the presence of a trifluoromethyl group at the 5-position of pyridine is essential for herbicidal activity. Furthermore, carboxylic esters exhibit higher herbicidal activity compared to carboxylic amides and free acids, and the activity decreased with the extension of the carbon chain. The postemergence herbicidal activity of VI03 against 16 species of weeds was tested by pot experiments in a greenhouse. VI03 demonstrated comparable efficacy in controlling broadleaf weeds and superior efficacy in controlling grass weeds compared to carfentrazone ethyl. The present study has unveiled a novel molecular scaffold exhibiting remarkably potent herbicidal activity. These findings are anticipated to provide valuable insights for the advancement of new herbicides and offer an alternative approach for managing resistant weeds.
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Affiliation(s)
- Yuqian Huang
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
| | - Zhanbin Li
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
| | - Yu Chen
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
| | - Wenqi Li
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
| | - Shaopeng Wei
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticides, Northwest A&F University, Yangling, 712100 Shaanxi, China
| | - Zhiqin Ji
- College of Plant Protection, Northwest A&F University, Yangling, 712100 Shaanxi, P. R. China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticides, Northwest A&F University, Yangling, 712100 Shaanxi, China
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Zhao Y, Ye F, Fu Y. Herbicide Safeners: From Molecular Structure Design to Safener Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:2451-2466. [PMID: 38276871 DOI: 10.1021/acs.jafc.3c08923] [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: 01/27/2024]
Abstract
Herbicide safeners, highly effective antidotes, find widespread application in fields for alleviating the phytotoxicity of herbicides to crops. Designing new herbicide safeners remains a notable issue in pesticide research. This review focuses on discussing and summarizing the structure-activity relationships, molecular structures, physicochemical properties, and molecular docking of herbicide safeners in order to explore how different structures affect the safener activities of target compounds. It also provides insights into the application prospects of computer-aided drug design for designing and synthesizing new safeners in the future.
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Affiliation(s)
- Yaning Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Jia L, Jin XY, Zhao LX, Fu Y, Ye F. Research Progress in the Design and Synthesis of Herbicide Safeners: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5499-5515. [PMID: 35473317 DOI: 10.1021/acs.jafc.2c01565] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Detoxification plays an important role in herbicide action. Herbicide safeners selectively protect crops from herbicide injury without reducing the herbicidal efficiency against the target weeds. With the large-scale use of herbicides, herbicide safeners have been widely used in sorghum, wheat, rice, corn, and other crops. In recent years, an increasing number of unexpected new herbicide safeners have been designed. The varieties, structural characteristics, uses, and synthetic routes of commercial herbicide safeners are reviewed in this paper. The design ideas and structural characteristics of novel herbicide safeners are summarized, which provide a basis for the design of bioactive molecules as new herbicide safeners in the future.
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Affiliation(s)
- Ling Jia
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Xin-Yu Jin
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
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Gao S, Liu Y, Jiang J, Ji Q, Fu Y, Zhao L, Li C, Ye F. Physicochemical properties and fungicidal activity of inclusion complexes of fungicide chlorothalonil with β-cyclodextrin and hydroxypropyl-β-cyclodextrin. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111513] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Guo KL, Zhao LX, Wang ZW, Rong SZ, Zhou XL, Gao S, Fu Y, Ye F. Design, Synthesis and Evaluation of Novel Trichloromethyl Dichlorophenyl Triazole Derivatives as Potential Safener. Biomolecules 2019; 9:E438. [PMID: 31480620 PMCID: PMC6770657 DOI: 10.3390/biom9090438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 12/30/2022] Open
Abstract
The dominance of safener can unite with herbicides acquiring the efficient protection of crop and qualifying control of weeds in agricultural fields. In order to solve the crop toxicity problem and exploit the novel potential safener for fenoxaprop-P-ethyl herbicide, a series of trichloromethyl dichlorobenzene triazole derivatives were designed and synthesized by the principle of active subunit combination. A total of 21 novel substituted trichloromethyl dichlorobenzene triazole compounds were synthesized by substituted aminophenol and amino alcohol derivatives as the starting materials, using cyclization and acylation. All the compounds were unambiguously characterized by IR, 1H-NMR, 13C-NMR, and HRMS. A greenhouse bioassay indicated that most of the title compounds could protect wheat from injury caused by fenoxaprop-P-ethyl at varying degrees, in which compound 5o exhibited excellent safener activity at a concentration of 10 μmol/L and was superior to the commercialized compound fenchlorazole. A structure-activity relationship for the novel compounds was determined, which demonstrated that those compounds containing benzoxazine groups showed better activity than that of oxazole-substituted compounds. Introducing a benzoxazine fragment and electron-donating group to specific positions could improve or maintain the safener activity for wheat against attack by the herbicide fenoxaprop-P-ethyl. A molecular docking model suggested that a potential mechanism between 5o and fenoxaprop-P-ethyl is associated with the detoxication of the herbicide. Results from the present work revealed that compound 5o exhibited good crop safener activities toward wheat and could be a promising candidate structure for further research on wheat protection.
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Affiliation(s)
- Ke-Liang Guo
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Wei Wang
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Shu-Zhe Rong
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiao-Lin Zhou
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin 150030, China.
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Xie ZL, Pennington DL, Boucher DG, Lo J, Rose MJ. Effects of Thiolate Ligation in Monoiron Hydrogenase (Hmd): Stability of the {Fe(CO) 2} 2+ Core with NNS Ligands. Inorg Chem 2018; 57:10028-10039. [PMID: 30070112 DOI: 10.1021/acs.inorgchem.8b01185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, we report the effects of NNS-thiolate ligands and nuclearity (monomer, dimer) on the stability of iron complexes related to the active site of monoiron hydrogenase (Hmd). A thermally stable iron(II) dicarbonyl motif is the core feature of the active site, but the coordination features that lead to this property have not been independently evaluated for their contributions to the {Fe(CO)2}2+ stability. As such, non-bulky and bulky benzothiazoline ligands (thiolate precursors) were synthesized and their iron(II) complexes characterized. The use of non-bulky thiolate ligands and low-temperature crystallizations result in isolation of the dimeric species [(NNS)2Fe2(CO)2(I)2] (1), [(NPhNS)2Fe2(CO)2(I)2] (2), and [(MeNNS)2Fe2(CO)2(I)2] (3), which exhibit dimerization via thiolato (μ2-S)2 bridges. In one particular case (unsubstituted NNS ligand), the pathway of decarbonylation and oxidation from 1 was crystallographically elucidated, via isolation of the half-bis-ligated monocarbonyl dimer [(NNS)3Fe2(CO)]I (4) and the fully decarbonylated and oxidized mononuclear [(NNS)2Fe]I (5). The transformations of dicarbonyl complexes (1, 2, and 3) to monocarbonyl complexes (4, 6, and 7) were monitored by UV/vis, demonstrating that 1 and 3 exhibit longer t1/2 (80 and 75 min, respectively) than 2 (30 min), which is attributed to distortion of the ligand backbone. Density functional theory calculations of isolated complexes and putative intermediates were used to corroborate the experimentally observed IR spectra. Finally, dimerization was prevented using a bulky ligand featuring a 2,6-dimethylphenyl substituent, which affords mononuclear iron dicarbonyl complex, [(NPhNSDMPh)Fe(CO)2Br] (8), identified by IR and NMR spectroscopies. The dicarbonyl complex decomposes to the decarbonylated [(NPhNSDMPh)2Fe] (9) within minutes at room temperature. Overall, the work herein demonstrates that the thiolate moiety does not impart thermal stability to the {Fe(CO)2}2+ unit formed in the active site, further indicating the importance of the organometallic Fe-C(acyl) bond in the enzyme.
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Affiliation(s)
- Zhu-Lin Xie
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Doran L Pennington
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Dylan G Boucher
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - James Lo
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Michael J Rose
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
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Zhao LX, Wang QR, Zou YL, Wu H, Ye F. Crystal structure of methyl ( R)-4-( o-chlorobenzoyl)-1-thia-4-azaspiro[4.5]decane-3-carboxylate, C 17H 20ClNO 3S. Z KRIST-NEW CRYST ST 2018. [DOI: 10.1515/ncrs-2018-0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C17H20ClNO3S, orthorhombic, P212121 (no. 19), a = 6.1984(2) Å, b = 14.3940(5) Å, c = 18.9651(6) Å, V = 1692.06(10) Å3, Z = 4, R
gt(F) = 0.0263, wR
ref(F
2) = 0.0683, T = 293(2) K.
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Affiliation(s)
- Li-Xia Zhao
- College of Agticulture , Northeast Agricultural University , Harbin, 150030 , People’s Republic of China
| | - Qing-Rui Wang
- College of Agticulture , Northeast Agricultural University , Harbin, 150030 , People’s Republic of China
| | - Yue-Li Zou
- College of Science , Northeast Agricultural University , Harbin, 150030 , People’s Republic of China
| | - Hao Wu
- College of Science , Northeast Agricultural University , Harbin, 150030 , People’s Republic of China
| | - Fei Ye
- College of Science , Northeast Agricultural University , Harbin, 150030 , People’s Republic of China
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Zhao LX, Wu H, Zou YL, Wang QR, Fu Y, Li CY, Ye F. Design, Synthesis, and Safener Activity of Novel Methyl (R)-N-Benzoyl/Dichloroacetyl-Thiazolidine-4-Carboxylates. Molecules 2018; 23:molecules23010155. [PMID: 29329269 PMCID: PMC6017158 DOI: 10.3390/molecules23010155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/05/2018] [Accepted: 01/12/2018] [Indexed: 11/16/2022] Open
Abstract
A series of novel methyl (R)-N-benzoyl/dichloroacetyl-thiazolidine-4-carboxylates were designed by active substructure combination. The title compounds were synthesized using a one-pot route from l-cysteine methyl ester hydrochloride, acyl chloride, and ketones. All compounds were characterized by IR, 1H NMR, 13C NMR, and HRMS. The structure of 4q was determined by X-ray crystallography. The biological tests showed that the title compounds protected maize from chlorimuron-ethyl injury to some extent. The ALS activity assay showed that the title compounds increased the ALS activity of maize inhibited by chlorimuron-ethyl. Molecular docking modeling demonstrated that Compound 4e competed against chlorimuron-ethyl to combine with the herbicide target enzyme active site, causing the herbicide to be ineffective.
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Affiliation(s)
- Li-Xia Zhao
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Hao Wu
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Yue-Li Zou
- College of Science, Northeast Agricultural University, Harbin 150030, China
| | - Qing-Rui Wang
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Ying Fu
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Chun-Yan Li
- College of Science, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- College of Science, Northeast Agricultural University, Harbin 150030, China.
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9
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Ye F, Ma P, Zhai Y, Yang F, Gao S, Zhao LX, Fu Y. Design, microwave-assisted synthesis, bioactivity and SAR of novel substituted 2-phenyl-2-cyclohexanedione enol ester derivatives. RSC Adv 2018; 8:19883-19893. [PMID: 35540959 PMCID: PMC9080744 DOI: 10.1039/c8ra02647e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 05/18/2018] [Indexed: 11/21/2022] Open
Abstract
Based on the structure–activity relationship and active substructure combination, a novel class of substituted 2-phenyl-2-cyclohexanedione enol ester derivatives was designed for use as potential herbicide safeners. A microwave-assisted synthetic route was developed for the substituted 2-phenyl-2-cyclohexenone enol ester derivatives via coupling and acylation reactions. In the modified protocol, the reactions were performed under microwave irradiation, resulting in significant improvements in the yields and reaction times. All of the structures were characterized using IR, 1H NMR, 13C NMR and HRMS spectroscopies. The bioassay results demonstrated that most of these compounds could alleviate clethodim injury to maize. Molecular docking modeling showed that the potential antagonism between compound 3(S24) and clethodim plays a key role in the metabolism of herbicides. This paper presents a new safener candidate for maize protection. Based on the structure–activity relationship and active substructure combination, a novel class of substituted 2-phenyl-2-cyclohexanedione enol ester derivatives was designed for use as potential herbicide safeners.![]()
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Affiliation(s)
- Fei Ye
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Peng Ma
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Yue Zhai
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Fei Yang
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Shuang Gao
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Li-Xia Zhao
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
| | - Ying Fu
- Department of Applied Chemistry
- College of Science
- Northeast Agricultural University
- Harbin
- P. R. China
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