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He J, Zhou B, Wang X, Chen Q, Jiang X, Kong T, Yao L, Zhao Y, Chen R, Xu Y, Dai H. Design, Synthesis and Bioactivities of Novel Pyridyl Containing Pyrazole Oxime Ether Derivatives. Molecules 2024; 29:2767. [PMID: 38930832 PMCID: PMC11206151 DOI: 10.3390/molecules29122767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
In this research, with an aim to develop novel pyrazole oxime ether derivatives possessing potential biological activity, thirty-two pyrazole oxime ethers, including a substituted pyridine ring, have been synthesized and structurally identified through 1H NMR, 13C NMR, and HRMS. Bioassay data indicated that most of these compounds owned strong insecticidal properties against Mythimna separata, Tetranychus cinnabarinus, Plutella xylostella, and Aphis medicaginis at a dosage of 500 μg/mL, and some title compounds were active towards Nilaparvata lugens at 500 μg/mL. Furthermore, some of the designed compounds had potent insecticidal effects against M. separata, T. cinnabarinus, or A. medicaginis at 100 μg/mL, with the mortalities of compounds 8a, 8c, 8d, 8e, 8f, 8g, 8o, 8s, 8v, 8x, and 8z against A. medicaginis, in particular, all reaching 100%. Even when the dosage was lowered to 20 μg/mL, compound 8s also expressed 50% insecticidal activity against M. separata, and compounds 8a, 8e, 8f, 8o, 8v, and 8x displayed more than 60% inhibition rates against A. medicaginis. The current results provided a significant basis for the rational design of biologically active pyrazole oxime ethers in future.
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Affiliation(s)
- Jie He
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Beibei Zhou
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Xinjuan Wang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Qi Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Xiaoqian Jiang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Ting Kong
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Long Yao
- Analysis and Testing Center, Nantong University, Nantong 226019, China
| | - Yingying Zhao
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Rong Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Ying Xu
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Hong Dai
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
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Ghaith EA, Ali HA, Ismail MA, Fouda AEAS, Abd El Salam M. Synthesis of inventive biphenyl and azabiphenyl derivatives as potential insecticidal agents against the cotton leafworm, Spodoptera littoralis. BMC Chem 2023; 17:144. [PMID: 37891573 PMCID: PMC10612163 DOI: 10.1186/s13065-023-01050-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
The emergence of pest resistance of Spodoptera littoralis (order; Lepidoptera, family; Noctuidae) towards the large scale of different classes of insecticides necessitates the development of some new poly-functionalized biphenyl and azabiphenyl with highly anticipated insecticidal bioresponse. Four new biphenyl carboxamidines 4a-d and four aza-analogue picolinamidine derivatives 8a-d were designed and prepared via the treatment of their corresponding carbonitriles with lithium-bis trimethylsilylamide [LiN(TMS)2], followed by hydrolysis with hydrogen chloride. Furthermore, these compounds were elucidated by spectral data, and their toxicity and insecticidal activity were screened against Spodoptera littoralis. Whereby, toxicological and biochemical aspects of the inventively synthesized biphenyl and azabiphenyl derivatives against the cotton leafworm, Spodoptera littoralis were inspected. As regards the indomitable LC50 and LC90 values, biphenyl and aza-analogues 8d, 8a, 4b, and 8b, revealed the furthermost forceful toxic effects with LC50 values of 113.860, 146.265, 216.624, and 289.879 ppm, respectively. Whereby, their LC90 values are 1235.108, 1679.044, 2656.296, and 3381.256 ppm, respectively, and toxicity index being 22.31%, 17.36%, 11.72%, and 8.76%, respectively, comparing with the already recommended, methomyl insecticide, lannate 90% SP (LC50, 25.396 and LC90, 57.860 and toxicity index, 100%). Additionally, electrochemical parameters via DFT studies were carried out for demonstrating and elucidation of structure-activity relationship (SAR) according to highly motived compounds, descriptors, and the in vivo insecticidal activities.
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Affiliation(s)
- Eslam A Ghaith
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt.
| | - Hajar A Ali
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Mohamed A Ismail
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Abd El-Aziz S Fouda
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - M Abd El Salam
- Plant Protection Research Institute, ARC, Dokki, Giza, Egypt
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Cai Z, Zhang W, Yan Z, Du X. Synthesis of Novel Pyrazole Derivatives Containing Phenylpyridine Moieties with Herbicidal Activity. Molecules 2022; 27:molecules27196274. [PMID: 36234814 PMCID: PMC9571195 DOI: 10.3390/molecules27196274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/16/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
To discover new compounds with favorable herbicidal activity, a range of phenylpyridine moiety-containing pyrazole derivatives were designed, synthesized, and identified via NMR and HRMS. Their herbicidal activities against six species of weeds were evaluated in a greenhouse via both pre- and post-emergence treatments at 150 g a.i./hm2. The bioassay revealed that a few compounds exhibited moderate herbicidal activities against Digitaria sanguinalis, Abutilon theophrasti, and Setaria viridis in post-emergence treatment. For instance, compounds 6a and 6c demonstrated 50% inhibition activity against Setaria viridis, which was slightly superior to pyroxasulfone. Thus, compounds 6a and 6c may serve as the new possible leading compounds for the discovery of post-emergence herbicides.
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Affiliation(s)
- Zengfei Cai
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wenliang Zhang
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhongjie Yan
- Agrowin (Ningbo) Bioscience Co., Ltd., Ningbo 315100, China
| | - Xiaohua Du
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence:
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Synthesis of Novel α-Trifluoroanisole Derivatives Containing Phenylpyridine Moieties with Herbicidal Activity. Int J Mol Sci 2022; 23:ijms231911083. [PMID: 36232394 PMCID: PMC9570041 DOI: 10.3390/ijms231911083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/17/2022] Open
Abstract
To find novel herbicidal compounds with high activity and broad spectrum, a series of phenylpyridine moiety-containing α-trifluoroanisole derivatives were designed, synthesized, and identified via nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HRMS). Greenhouse-based herbicidal activity assays revealed that compound 7a exhibited > 80% inhibitory activity against Abutilon theophrasti, Amaranthus retroflexus, Eclipta prostrate, Digitaria sanguinalis, and Setaria viridis at a dose of 37.5 g a.i./hm2, which was better than fomesafen. Compound 7a further exhibited excellent herbicidal activity against Abutilon theophrasti and Amaranthus retroflexus in this greenhouse setting, with respective median effective dose (ED50) values of 13.32 and 5.48 g a.i./hm2, both of which were slightly superior to fomesafen (ED50 = 36.39, 10.09 g a.i./hm2). The respective half-maximal inhibitory concentration (IC50) for compound 7a and fomesafen when used to inhibit the Nicotiana tabacum protoporphyrinogen oxidase (NtPPO) enzyme, were 9.4 and 110.5 nM. The docking result of compound 7a indicated that the introduction of 3-chloro-5-trifluoromethylpyridine and the trifluoromethoxy group was beneficial to the formation of stable interactions between these compounds and NtPPO. This work demonstrated that compound 7a could be further optimized as a PPO herbicide candidate to control various weeds.
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Cai Z, Zhang W, Yan Z, Du X. Synthesis of Novel α-Trifluorothioanisole Derivatives Containing Phenylpyridine Moieties with Herbicidal Activity. Molecules 2022; 27:molecules27185879. [PMID: 36144624 PMCID: PMC9505602 DOI: 10.3390/molecules27185879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/05/2022] [Accepted: 09/07/2022] [Indexed: 11/16/2022] Open
Abstract
To discover novel herbicidal compounds with favorable activity, a range of phenylpyridine-moiety-containing α-trifluorothioanisole derivatives were designed, synthesized, and identified via NMR and HRMS. Preliminary screening of greenhouse-based herbicidal activity revealed that compound 5a exhibited >85% inhibitory activity against broadleaf weeds Amaranthus retroflexus, Abutilon theophrasti, and Eclipta prostrate at 37.5 g a.i./hm2, which was slightly superior to that of fomesafen. The current study suggests that compound 5a could be further optimized as an herbicide candidate to control various broadleaf weeds.
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Affiliation(s)
- Zengfei Cai
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wenliang Zhang
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhongjie Yan
- Agrowin (Ningbo) Bioscience Co., Ltd., Ningbo 315100, China
| | - Xiaohua Du
- Catalytic Hydrogenation Research Center, Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Zhejiang University of Technology, Hangzhou 310014, China
- Correspondence:
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