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Guo M, Zhou J, Tian Y, Du X, Tang X, Lu H, Li Y, Xu Y, Yuan Z, Qin Z. Synthesis, Herbicidal Activity against Barnyard Grass, and Photolytic Behavior of Aryl 2,6-Dipyrimidinoxybenzoates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:300-312. [PMID: 38110303 DOI: 10.1021/acs.jafc.3c05238] [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: 12/20/2023]
Abstract
In this study, we investigated the characteristics and herbicidal potential of bispyribac phenolic esters, which belong to the 2-(pyrimidin-2-yloxy)benzoic acid (PYB) class of acetohydroxyacid synthase (AHAS-)-inhibiting herbicides. These herbicides are primarily used for controlling Poaceae and broadleaf weeds. Among them, bispyribac-sodium stands out as a representative in this class. Surprisingly, other bispyribac esters, including alkanol and phenol esters exhibit considerably reduced herbicidal activity compared to bispyribac-sodium. In contrast, oxime esters (e.g., pyribenzoxim) demonstrate high activity. To further understand and develop novel PYB herbicides, we synthesized and screened a series of bispyribac phenolic esters while investigating their photochemical behaviors. Several compounds displayed excellent herbicidal activity, with compounds Ia-19 and Ic showing impressive 90% effective dosages for fresh weight inhibition of barnyard grass, measuring 0.55 and 0.60 g a.i./hm2, respectively. These values were approximately half of bispyribac-sodium or pyribenzoxim. The results indicate that the herbicidal activity of phenolic esters is influenced by both their binding ability to the AHAS enzyme and their decomposition into bispyribac acid. For instance, bispyribac phenol ester exhibited considerably reduced receptor affinity compared to bispyribac-sodium, and faced challenges in transforming into bispyribac acid, explaining its diminished herbicidal activity. However, introducing a photosensitive nitro group led to a complete transformation. This modification improved its affinity with AHAS and accelerated its decomposition into bispyribac acid, further accelerated by photocatalysis. Consequently, nitro-containing compounds displayed heightened herbicidal activity. The findings from this study open possibilities for structural optimization of phenolic esters through quantitative structure-activity relationship analysis, potentially regulating their activity-releasing period. Furthermore, the high activity of aromatic heterocyclic esters offers new insights into developing novel PYB herbicides.
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Affiliation(s)
- Menglei Guo
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Jing Zhou
- College of Agriculture, Yangtze University, Jinzhou 434023, China
| | - Yiyi Tian
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Xiaoying Du
- College of Agriculture, Yangtze University, Jinzhou 434023, China
| | - Xianjun Tang
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Huizhe Lu
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Yiyi Li
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Yanjun Xu
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Ziyang Yuan
- College of Sciences, China Agricultural University, Beijing 100193, China
| | - Zhaohai Qin
- College of Sciences, China Agricultural University, Beijing 100193, China
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Zhang Q, Lin G, Duan W, Zhao S, He J, Lei F. Synthesis, Antifungal Activity and 3D‐QSAR Study of Novel (
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)‐Longifolene‐Derived Tetralone Oxime Ethers. ChemistrySelect 2021. [DOI: 10.1002/slct.202100898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Qianan Zhang
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 Guangxi China
| | - Guishan Lin
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 Guangxi China
| | - Wengui Duan
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 Guangxi China
| | - Shuyan Zhao
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 Guangxi China
| | - Jiamin He
- School of Chemistry and Chemical Engineering Guangxi University Nanning 530004 Guangxi China
| | - Fuhou Lei
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products Guangxi University for Nationalities Nanning 530008 Guangxi China
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Cai X, Hu H, Gong S, Xu X, Wang B, Zhou H, Xu D. Synthesis and Herbicidal Activity of Trifluoromethyl‐Substituted Phenyl Alkyl Ketoxime Esters of Bispyribac. ChemistrySelect 2020. [DOI: 10.1002/slct.202000781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xinhong Cai
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
| | - Hang Hu
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
| | - Shunze Gong
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
| | - Xiangjian Xu
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
| | - Bin Wang
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
| | - Huan Zhou
- Center for Health Science and EngineeringSchool of Materials Science and EngineeringHebei University of Technology Tianjin 300130 P. R. China
| | - Defeng Xu
- National & Local Joint Engineering Research Center for High-efficiency Refining and High-quality Utilization of BiomassSchool of Pharmaceutical Engineering and Life SciencesChangzhou University Changzhou 213164 P. R. China
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