1
|
Chen Y, Liu H, Wang J, Wang K, Zhang Z, He B, Ye Y. Design, Synthesis, and Antifungal Evaluation of Diverse Heterocyclic Hydrazide Derivatives as Potential Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12915-12924. [PMID: 38807027 DOI: 10.1021/acs.jafc.3c08927] [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: 05/30/2024]
Abstract
Plant pathogenic fungi pose a significant threat to agricultural production, necessitating the development of new and more effective fungicides. The ring replacement strategy has emerged as a highly successful approach in molecular design. In this study, we employed the ring replacement strategy to successfully design and synthesize 32 novel hydrazide derivatives containing diverse heterocycles, such as thiazole, isoxazole, pyrazole, thiadiazole, 1,3,4-oxadiazole, 1,2,4-oxadiazole, thiophene, pyridine, and pyrazine. Their antifungal activities were evaluated in vitro and in vivo. Bioassay results revealed that most of the title compounds displayed remarkable antifungal activities in vitro against four tested phytopathogenic fungi, including Fusarium graminearum, Botrytis cinerea, Sclerotinia sclerotiorum, and Rhizoctonia solani. Especially, compound 5aa displayed a broad spectrum of antifungal activity against F. graminearum, B. cinerea, S. sclerotiorum, and R. solani, with the corresponding EC50 values of 0.12, 4.48, 0.33, and 0.15 μg/mL, respectively. In the antifungal growth assay, compound 5aa displayed a protection efficacy of 75.5% against Fusarium head blight (FHB) at a concentration of 200 μg/mL. In another in vivo antifungal activity evaluation, compound 5aa exhibited a noteworthy protective efficacy of 92.0% against rape Sclerotinia rot (RSR) at a concentration of 100 μg/mL, which was comparable to the positive control tebuconazole (97.5%). The existing results suggest that compound 5aa has a broad-spectrum antifungal activity. Electron microscopy observations showed that compound 5aa might cause mycelial abnormalities and organelle damage in F. graminearum. Moreover, in the in vitro enzyme assay, we found that the target compounds 5aa, 5ab, and 5ca displayed significant inhibitory effects toward succinate dehydrogenase, with the corresponding IC50 values of 1.62, 1.74, and 1.96 μM, respectively, which were superior to that of boscalid (IC50 = 2.38 μM). Additionally, molecular docking and molecular dynamics simulation results revealed that compounds 5aa, 5ab, and 5ca have the capacity to bind in the active pocket of succinate dehydrogenase (SDH), establishing hydrogen-bonding interactions with neighboring amino acid residues.
Collapse
Affiliation(s)
- Yiliang Chen
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, People's Republic of China
| | - Hao Liu
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Jiahao Wang
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Kaiyan Wang
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Zhenhua Zhang
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Bo He
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Yonghao Ye
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| |
Collapse
|
2
|
Zhang Y, Li J, Yang H, Li K, Yuan H, Xue Z, Tang L, Fan Z. Fungicidal Activity of New Pyrrolo[2,3- d]thiazoles and Their Potential Action on the Tryptophan Metabolic Pathway and Wax Biosynthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11990-12002. [PMID: 38757490 DOI: 10.1021/acs.jafc.4c00930] [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: 05/18/2024]
Abstract
The main challenge in the development of agrochemicals is the lack of new leads and/or targets. It is critical to discover new molecular targets and their corresponding ligands. YZK-C22, which contains a 1,2,3-thiadiazol-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole skeleton, is a fungicide lead compound with broad-spectrum fungicidal activity. Previous studies suggested that the [1,2,4]triazolo[3,4-b][1,3,4]thiadiazole scaffold exhibited good antifungal activity. Inspired by this, a series of pyrrolo[2,3-d]thiazole derivatives were designed and synthesized through a bioisosteric strategy. Compounds C1, C9, and C20 were found to be more active against Rhizoctonia solani than the positive control YZK-C22. More than half of the target compounds provided favorable activity against Botrytis cinerea, where the EC50 values of compounds C4, C6, C8, C10, and C20 varied from 1.17 to 1.77 μg/mL. Surface plasmon resonance and molecular docking suggested that in vitro potent compounds C9 and C20 have a new mode of action instead of acting as pyruvate kinase inhibitors. Transcriptome analysis revealed that compound C20 can impact the tryptophan metabolic pathway, cutin, suberin, and wax biosynthesis of B. cinerea. Overall, pyrrolo[2,3-d]thiazole is discovered as a new fungicidal lead structure with a potential new mode of action for further exploration.
Collapse
Affiliation(s)
- Yue Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Jing Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Hongwei Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Kun Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Haolin Yuan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Ziqiao Xue
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin 300071, P. R. China
| |
Collapse
|
3
|
Ma C, Tian L, Wang YE, Huo J, An Z, Sun S, Kou S, Wang W, Li Y, Zhang J, Chen L. Discovery of Novel Pyrazole Acyl Thiourea Skeleton Analogue as Potential Herbicide Candidates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7727-7734. [PMID: 38530940 DOI: 10.1021/acs.jafc.3c08863] [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: 03/28/2024]
Abstract
To discover novel transketolase (TKL, EC 2.2.1.1) inhibitors with potential herbicidal applications, a series of pyrazole acyl thiourea derivatives were designed based on a previously obtained pyrazolamide acyl lead compound, employing a scaffold hopping strategy. The compounds were synthesized, their structures were characterized, and they were evaluated for herbicidal activities. The results indicate that 7a exhibited exceptional herbicidal activity against Digitaria sanguinalis and Amaranthus retroflexus at a dosage of 90 g ai/ha, using the foliar spray method in a greenhouse. This performance is comparable to that of commercial products, such as nicosulfuron and mesotrione. Moreover, 7a showed moderate growth inhibitory activity against the young root and stem of A. retroflexus at 200 mg/L in the small cup method, similar to that of nicosulfuron and mesotrione. Subsequent mode-of-action verification experiments revealed that 7a and 7e inhibited Setaria viridis TKL (SvTKL) enzyme activity, with IC50 values of 0.740 and 0.474 mg/L, respectively. Furthermore, they exhibited inhibitory effects on the Brassica napus acetohydroxyacid synthase enzyme activity. Molecular docking predicted potential interactions between these (7a and 7e) and SvTKL. A greenhouse experiment demonstrated that 7a exhibited favorable crop safety at 150 g ai/ha. Therefore, 7a is a promising herbicidal candidate that is worthy of further development.
Collapse
Affiliation(s)
- Chujian Ma
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Luyang Tian
- Bohai College, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Zexiu An
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Susu Sun
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Song Kou
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Wenfei Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Yaze Li
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| |
Collapse
|
4
|
Liu C, Zhang L, Cao X, Chen Y, Li Z, Maienfisch P, Xu X. Discovery of Trifluorobutene Amide Derivatives as Potential Nematicides: Design, Synthesis, Nematicidal Activity Evaluation, SAR, and Mode of Action Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1429-1443. [PMID: 38189665 DOI: 10.1021/acs.jafc.3c05758] [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: 01/09/2024]
Abstract
Plant-parasitic nematodes are one of the major threats to crop protection. However, only limited nematicides are currently available and are confronted with a growing resistance problem, which necessitates the development of novel nematicides. In this study, a series of trifluorobutene amide derivatives was synthesized through the strategy of amide bond reversal, and their nematicidal activity against Meloidogyne incognita was evaluated. The bioassay showed that compounds C2, C10, and C18 and some analogues thereof exhibited good nematicidal activity. Among them, the derivatives of compound C2 containing a benzene ring [C26 (R = 2-CH3) and C33 (R = 2-Cl)] exhibited excellent bioactivity against M. incognita in vitro. The LC50/72h values reached 14.13 and 14.71 mg·L-1, respectively. Moreover, analogues of compounds C10 and C18 containing a thiophene ring [C43 (R = 5-CH3), C44 (R = 4-CH3), and C50 (R = 5-Cl)] exhibited significant bioactivity against M. incognita in vivo with inhibition rates of 68.8, 65.5, and 69.8% at 2.5 mg·L-1 in a matrix, respectively. Meanwhile, C44 and C50 also showed excellent control effects against M. incognita in both cups and microplots. The structure-activity relationship (SAR) of synthesized compounds was discussed in detail. Comparative molecular field analysis (CoMFA) was also conducted to develop the SAR profile. The preliminary mode of action investigation showed that compound C33 exhibited strong inhibition on egg hatching, motility, feeding behavior, and growth of Caenorhabditis elegans. At the same time, the impact of active compounds on biochemical indicators related to oxidative stress showed that compound C33 influenced the production of ROS (reactive oxygen species), and the accumulation of lipofuscin and lipids on C. elegans.
Collapse
Affiliation(s)
- Cheng Liu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Letian Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xiaofeng Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yadi Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
- CreInSol MCB, Aegertenstrasse 21, CH-4118 Rodersdorf, Switzerland
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| |
Collapse
|
5
|
Yang S, Tang J, Peng H, Pu C, Fan S, Zhao C, Xu H. Discovery of novel thiazolyl anthranilic diamide derivatives as insecticidal candidates. PEST MANAGEMENT SCIENCE 2023; 79:5260-5269. [PMID: 37599274 DOI: 10.1002/ps.7734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND Agricultural pests have caused huge losses in agricultural production and threaten global food security. Synthetic insecticides remain the major control method. However, with the rapid development of pest resistance and the increasingly stringent regulations on pesticide usage, the development of efficient insecticides with novel structures is particularly urgent. RESULTS Twenty-six novel anthranilic diamide derivatives containing the thiazole moiety were designed based on the scaffold hopping strategy. Bioassay results indicated that compound 6e exhibited excellent insecticidal activity against a susceptible strain of diamondback moth (Plutella xylostella) with a median lethal concentration (LC50 ) of 0.65 mg L-1 , which was similar to chlorantraniliprole (LC50 = 0.53 mg L-1 ). Compound 6e showed marginally lower (LC50 = 50.45 mg L-1 ) insecticidal activity than chlorantraniliprole (LC50 = 31.98 mg L-1 ) on chlorantraniliprole-resistant P. xylostella larvae, suggesting a cross-resistance of compound 6e with chlorantraniliprole (resistance ratios, 77.6-fold and 60.3-fold, respectively). Compound 6e also showed good insecticidal activity against fall armyworm and beet armyworm with pest mortalities of 74% and 64%, respectively, at 5 mg L-1 concentration. In addition, compounds 6e and 12a showed delayed toxicity against red imported fire ant with mortality rates of 84% and 85% (respectively) after 5 days of treatment at 1.0 mg L-1 , which were superior to that of chlorantraniliprole. CONCLUSION The introduction of thiazole into anthranilic diamide scaffolds resulted in insecticidal leads 6e and 12a with excellent insecticidal activities and potential application in controlling red imported fire ants. The work also guides the discovery of insecticidal molecules with thiazole-containing anthranilic diamide scaffold. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Shuai Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Jiahong Tang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Hongxiang Peng
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Chunmei Pu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Shuting Fan
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Chen Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| | - Hanhong Xu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
| |
Collapse
|
6
|
El Mahmoudi A, Fegrouche R, Tachallait H, Lumaret JP, Arshad S, Karrouchi K, Bougrin K. Green synthesis, characterization, and biochemical impacts of new bioactive isoxazoline-sulfonamides as potential insecticidal agents against the Sphodroxia maroccana Ley. PEST MANAGEMENT SCIENCE 2023; 79:4847-4857. [PMID: 37500586 DOI: 10.1002/ps.7686] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/22/2023] [Accepted: 07/28/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND Sphodroxia maroccana Ley is a pest of cork oak crops that damages the roots of seedlings and can severely impair cork oak regeneration. Since the banning of carbosulfan and chlorpyriphos, which were widely used against the larvae of Sphodroxia maroccana because of their harmful impact on the environment, until now there has been no pesticide against these pests. Therefore, it is particularly urgent to develop highly effective insecticidal molecules with novel scaffolds. Isoxazolines are a class of insecticides that act on γ-aminobutyric acid (GABA)-gated chloride channel allosteric modulators. In this work, a green synthesis of novel 3,5-disubstituted isoxazoline-sulfonamide derivatives was achieved in water via ultrasound-assisted four-component reactions, and their insecticidal activities against fourth-instar larvae of S. maroccana were evaluated. RESULTS Most of the tested compounds showed insecticidal activity compared to fluralaner as positive control and commercially available insecticide. Especially, the isoxazoline-secondary sulfonamides containing halogens (Br and Cl) on the phenyl group attached to the isoxazoline, 6g (LC50 = 0.31 mg/mL), 6j (LC50 = 0.38 mg/mL), 6k (LC50 = 0.18 mg/mL), 6L (LC50 = 0.49 mg/mL), 6m (LC50 = 0.24 mg/mL), 6q (LC50 = 0.46 mg/mL), exhibited much higher larvicidal activity than fluralaner (LC50 = 0.99 mg/mL). CONCLUSION Novel isoxazolines containing sulfonamide moieties were designed, synthesized and confirmed by two single-crystal structures of 4e and 6q. Their bioassay results showed significant larvicidal activity with significant morphological changes in vivo. These results will lay the foundation for the further discovery and development of isoxazoline-sulfonamide derivatives as novel crop protection larvicides of cork oak. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Ayoub El Mahmoudi
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University in Rabat, Agdal, Morocco
| | - Rachida Fegrouche
- Laboratory of Biodiversity, Ecology, and Genome (BioEcoGen), Faculty of Sciences, B.P. 1014, Biotechnologies Végétale et Microbienne, Biodiversité et Environnement (Biobio) Research Center, Mohammed V University in Rabat, Agdal, Morocco
| | - Hamza Tachallait
- Chemical & Biochemical Sciences Green-Process Engineering (CBS) Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Jean-Pierre Lumaret
- Zoogeography Laboratory, University Paul-Valéry Montpellier 3, Montpellier, France
| | - Suhana Arshad
- X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Penang, Malaysia
| | - Khalid Karrouchi
- Laboratory of Analytical Chemistry and Bromatology, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Agdal, Morocco
| | - Khalid Bougrin
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University in Rabat, Agdal, Morocco
- Chemical & Biochemical Sciences Green-Process Engineering (CBS) Mohammed VI Polytechnic University, Benguerir, Morocco
| |
Collapse
|
7
|
Xu L, Quan X, Li Z, Maienfisch P. Synthesis and Biological Activity of Silicon-Containing Ethylsulfonylpyridine Insecticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18250-18259. [PMID: 37672484 DOI: 10.1021/acs.jafc.3c04058] [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: 09/08/2023]
Abstract
Ethylsulfonylpyridines are a novel chemical class of insecticides with excellent broad-spectrum activity and an unprecedented mode of action. With the objective of discovering novel ethylsulfonylpyridines with a broader spectrum, wider range of uses, and/or improved properties, we have started a research program aimed at introducing silicon motifs and studying their biological effects. We designed a series of Oxazosulfyl analogues where the hydrogen atom at the 5-position of the pyridyl moiety is replaced by a trialkylsilyl group and prepared these compounds applying denovo synthetic methodology. Our novel ethylsulfonylpyridines exhibit excellent insecticidal activities. The best compound, A18, resulting from our research exhibited an LC50 value of 0.30 mg/L against Plutella xylostella and reached the activity level of the commercial standard Oxazosulfyl. Our findings confirmed our working hypothesis that at the 5-position of the pyridyl moiety larger groups with different hydrophobic, electronic, and steric properties are tolerated.
Collapse
Affiliation(s)
- Liu Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaocao Quan
- 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
- State Key Laboratory of Bioreactor Engineering, 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 Consulting & Biocontrols, CH-4118 Rodersdorf, Switzerland
| |
Collapse
|
8
|
Lamberth C. Isosteric Ring Exchange as a Useful Scaffold Hopping Tool in Agrochemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18123-18132. [PMID: 37022306 DOI: 10.1021/acs.jafc.3c00997] [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: 06/19/2023]
Abstract
Replacing one ring in a molecule by a different carba- or heterocycle is an important scaffold hopping manipulation, because biologically active compounds and their analogues, which underwent such a transformation, are often similar in size, shape, and physicochemical properties and, therefore, likely in their potency as well. This review will demonstrate, how isosteric ring exchange led to the discovery of highly active agrochemicals and which ring interchanges have proven to be most successful.
Collapse
Affiliation(s)
- Clemens Lamberth
- Chemical Research, Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| |
Collapse
|
9
|
Frackenpohl J, Abel SAG, Alnafta N, Barber DM, Bojack G, Brant NZ, Helmke H, Mattison RL. Inspired by Nature: Isostere Concepts in Plant Hormone Chemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18141-18168. [PMID: 37277148 DOI: 10.1021/acs.jafc.3c01809] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chemical concepts such as isosteres and scaffold hopping have proven to be powerful tools in agrochemical innovation processes. They offer opportunities to modify known molecular lead structures with the aim to improve a range of parameters, including biological efficacy and spectrum, physicochemical properties, stability, and toxicity. While recent biochemical insights into plant-specific receptors and signaling pathways trigger the discovery of the first lead structures, the disclosure of such a new chemical structure sparks a broad range of synthesis activities giving rise to diverse chemical innovation and often a considerable boost in biological activity. Herein, recent examples of isostere concepts in plant-hormone chemistry will be discussed, outlining how synthetic creativity can broaden the scope of natural product chemistry and giving rise to new opportunities in research fields such as abiotic stress tolerance and growth promotion.
Collapse
Affiliation(s)
- Jens Frackenpohl
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Steven A G Abel
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Neanne Alnafta
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - David M Barber
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Guido Bojack
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Nicola Z Brant
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Hendrik Helmke
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| | - Rebecca L Mattison
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| |
Collapse
|
10
|
Abel SAG, Alnafta N, Asmus E, Bollenbach-Wahl B, Braun R, Dittgen J, Endler A, Frackenpohl J, Freigang J, Gatzweiler E, Heinemann I, Helmke H, Laber B, Lange G, Machettira A, McArthur G, Müller T, Odaybat M, Reingruber AM, Roth S, Rosinger CH, Schmutzler D, Schulte W, Stoppel R, Tiebes J, Volpin G, Barber DM. A Study in Scaffold Hopping: Discovery and Optimization of Thiazolopyridines as Potent Herbicides That Inhibit Acyl-ACP Thioesterase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18212-18226. [PMID: 37677080 DOI: 10.1021/acs.jafc.3c02490] [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: 09/09/2023]
Abstract
In the search for new chemical entities that can control resistant weeds by addressing novel modes of action (MoAs), we were interested in further exploring a compound class that contained a 1,8-naphthyridine core. By leveraging scaffold hopping methodologies, we were able to discover the new thiazolopyridine compound class that act as potent herbicidal molecules. Further biochemical investigations allowed us to identify that the thiazolopyridines inhibit acyl-acyl carrier protein (ACP) thioesterase (FAT), with this being further confirmed via an X-ray cocrystal structure. Greenhouse trials revealed that the thiazolopyridines display excellent control of grass weed species in pre-emergence application coupled with dose response windows that enable partial selectivity in certain crops.
Collapse
Affiliation(s)
- Steven A G Abel
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Neanne Alnafta
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Elisabeth Asmus
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Birgit Bollenbach-Wahl
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Ralf Braun
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Jan Dittgen
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Anne Endler
- Targenomix GmbH, Am Mühlenberg 11, 14476, Potsdam, Germany
| | - Jens Frackenpohl
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Jörg Freigang
- Research and Development, Hit Discovery, Bayer AG, Crop Science Division, Alfred-Nobel-Straße 50, 40789, Monheim am Rhein, Germany
| | - Elmar Gatzweiler
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Ines Heinemann
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Hendrik Helmke
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Bernd Laber
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Gudrun Lange
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Anu Machettira
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Gillian McArthur
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Thomas Müller
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Magdalena Odaybat
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Anna M Reingruber
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Sina Roth
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Christopher H Rosinger
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Dirk Schmutzler
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Wolfgang Schulte
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Rhea Stoppel
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Jörg Tiebes
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Giulio Volpin
- Research and Development, Small Molecules Technologies, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - David M Barber
- Research and Development, Weed Control Research, Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| |
Collapse
|
11
|
Lamberth C. Ring Closure and Ring Opening as Useful Scaffold Hopping Tools in Agrochemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18133-18140. [PMID: 37223957 DOI: 10.1021/acs.jafc.3c01416] [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: 05/25/2023]
Abstract
Ring closing acyclic parts of a molecular scaffold or the opposite manipulation, opening rings to produce pseudo-ring structures, is an important scaffold hopping manipulation. Analogues derived from biologically active compounds through the utilization of such strategies are often similar in shape and physicochemical properties and, therefore, likely to exhibit similar potency. This review will demonstrate how several different ring closure techniques, such as replacing carboxylic functions by cyclic peptide mimics, incorporating double bonds into aromatic rings, tying back ring substituents to a bicyclic structure, cyclizing adjacent ring substituents to an annulated ring, bridging annulated ring systems to tricyclic scaffolds, and exchanging gem-dimethyl groups by cycloalkyl rings, but also ring opening led to the discovery of highly active agrochemicals.
Collapse
Affiliation(s)
- Clemens Lamberth
- Chemical Research, Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| |
Collapse
|
12
|
Kalnmals CA, Benko ZL, Hamza A, Bravo-Altamirano K, Siddall TL, Zielinski M, Takano HK, Riar DS, Satchivi NM, Roth JJ, Church JB. A New Class of Diaryl Ether Herbicides: Structure-Activity Relationship Studies Enabled by a Rapid Scaffold Hopping Approach. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18171-18187. [PMID: 37350671 DOI: 10.1021/acs.jafc.3c01285] [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: 06/24/2023]
Abstract
We report on the development of a novel class of diaryl ether herbicides. After the discovery of a phenoxybenzoic acid with modest herbicidal activity, optimization led to several molecules with improved control of broadleaf and grass weeds. To facilitate this process, we first employed a three-step combinatorial approach, then pivoted to a one-step Ullmann-type coupling that provided faster access to new analogs. After determining that the primary target site of our benchmark diaryl ethers was acetolactate synthase (ALS), we further leveraged this copper-catalyzed methodology to conduct a scaffold hopping campaign in the hope of uncovering an additional mode of action with fewer documented cases of resistance. Our comprehensive and systematic investigation revealed that while the herbicidal activity of this area seems to be exclusively linked to ALS inhibition, our molecules represent a structurally distinct class of Group 2 herbicides. The structure-activity relationships that led us to this conclusion are described herein.
Collapse
Affiliation(s)
- Christopher A Kalnmals
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Zoltan L Benko
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Adel Hamza
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Karla Bravo-Altamirano
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Thomas L Siddall
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Moriah Zielinski
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Hudson K Takano
- Mode of Action and Resistance Management Center of Expertise, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Dilpreet S Riar
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Norbert M Satchivi
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Joshua J Roth
- Discovery Chemistry, Small Molecule Discovery and Development, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| | - Jeffrey B Church
- Herbicide Biology, Integrated Biology and Field Sciences, Corteva Agriscience, Indianapolis, Indiana 46268, United States
| |
Collapse
|
13
|
Xu Y, Guo X, Li T, Li T, Ding X, Wang Z, Lu A, Wang Q. Design, Synthesis, and Biological Evaluation of Novel Derivatives of the Marine Natural Product Laurene. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14483-14492. [PMID: 37751549 DOI: 10.1021/acs.jafc.3c03700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Plant pathogenic fungi and viruses are seriously threatening agricultural production. There is an urgent need to develop novel fungicides and antiviral agents with low toxicity and high efficiency. In this study, we designed and synthesized 32 thiazole-, hydrazone-, and amide-containing derivatives of laurene and systematically evaluated their antiviral activities and fungicidal activities. Structure-simplified compounds 5a-5c, 5i, 5k, 5l, 11a, 11j, and 12c displayed higher antiviral activities than that of ningnanmycin. Compound 11a with a simple chemical structure, convenient synthetic route, and excellent antiviral activity emerged as a secondary lead compound. The docking results show that compounds 5i, 5k, and 11a have strong interactions with the tobacco mosaic virus coat protein (TMV CP). These compounds also exhibited significant fungicidal activities. Compounds 5g, 5k, 11j, and 11l displayed 9.15-17.45 μg/mL EC50 values against Pyricularia grisea, and compounds 5h (EC50: 8.01 μg/mL) and 11i (EC50: 15.23 μg/mL) exhibited a similar level of EC50 values with chlorothalonil (EC50: 7.33 μg/mL) against Physalospora piricola. Preliminary fungicidal mechanism research indicated that compound 5h has a certain destructive effect on the hyphae of P. piricola. This work lays a foundation for the application of laurene derivatives in plant protection.
Collapse
Affiliation(s)
- Yubin Xu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Xin Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Tingyi Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Taiqing Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Xin Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Ziwen Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Aidang Lu
- School of Chemical Engineering and Technology, Hebei University of Technology, Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300130, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin 300071, China
| |
Collapse
|
14
|
Yang S, Tang J, Li B, Yao G, Peng H, Pu C, Zhao C, Xu H. Rational Design of Insecticidal Isoxazolines Containing Sulfonamide or Sulfinamide Structure as Antagonists of GABA Receptors with Reduced Toxicities to Honeybee and Zebrafish. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14211-14220. [PMID: 37737111 DOI: 10.1021/acs.jafc.3c03459] [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: 09/23/2023]
Abstract
To develop highly effective, nontarget organism-friendly insecticides based on the isoxazoline scaffold, we rationally designed and synthesized 25 isoxazoline derivatives containing sulfonamides and sulfinamides. Their insecticidal activities against the diamondback moth (Plutella xylostella), fall armyworm (Spodoptera frugiperda), beet armyworm (Spodoptera exigua), and Spodoptera litura Fabricius (S. litura) were evaluated. The trifluoromethyl sulfinamide-containing compound 7w displayed excellent activities with LC50 values being 0.09, 0.84, 0.87, and 0.68 mg/L against P. xylostella, S. frugiperda, S. exigua, and S. litura, respectively, which were superior to fluxametamide (LC50 = 0.09, 1.24, 1.10, and 0.65 mg/L, respectively) and maintained at the same order of magnitude LC50 values as fluralaner (LC50 = 0.02, 0.17, 0.12, and 0.19 mg/L, respectively). Importantly, compound 7w showed a medium toxicity level of acute toxicity to honeybee (LD50 = 2.22 μg/adult), which is significantly lower than the fluralaner (high toxicity level, LD50 = 0.09 μg/adult). Acute toxicity experiments with zebrafish (Danio rerio) indicated that compound 7w was safe with the LC50 value being 42.4 mg/L (low toxicity level). Furthermore, electrophysiological experiments and molecular docking studies preliminarily verified that compound 7w acts on the insect GABA receptor, and the theoretical calculations explained that the sulfinamide structure may play an important role in exhibiting biological activities. The above results suggest that compound 7w could be employed as a potentially highly effective, environmentally friendly insecticide to control multiple agricultural pests.
Collapse
Affiliation(s)
- Shuai Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Jiahong Tang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Benjie Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Guangkai Yao
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Hongxiang Peng
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Chunmei Pu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Chen Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Hanhong Xu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, People's Republic of China
| |
Collapse
|
15
|
Zhang A, Yang J, Tao K, Hou T, Jin H. Novel aromatic carboxamide potentially targeting fungal succinate dehydrogenase: Design, synthesis, biological activities and molecular dynamics simulation studies. PEST MANAGEMENT SCIENCE 2023; 79:3700-3711. [PMID: 37184297 DOI: 10.1002/ps.7551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 05/10/2023] [Accepted: 05/15/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND Succinate dehydrogenase inhibitors (SDHIs) emerging in fungicide markets are widely used in crop protection. Currently, the structural modification focusing on a structurally diverse 'core' moiety (aryl) of SDHIs is being gradually identified as one of the innovative strategies for developing novel, highly effective and low resistant fungicides. RESULTS By optimization of lead compound SCU2028, 30 novel aromatic carboxamides Ia-o and IIa-o without a pyrazol group were designed, synthesized and characterized by 1 H NMR, 13 C NMR and high resolution mass spectrum (HRMS). In vitro antifungal activities showed that most of the compounds Ia-o and IIa-o exhibited good antifungal activities against Rhizoctonia solani. Among them, compounds Ic and IIc (EC50 = 0.02 mg/L), with the 2-chloro-3-pyridyl moiety, and compounds Io (EC50 = 0.03 mg/L) and IIo (EC50 = 0.02 mg/L), with the 4-methyl-2-trifluoromethylthiazolyl moiety, all exhibited the equivalent antifungal activities against R. solani with compound SCU2028 (EC50 = 0.03 mg/L) and bixafen (EC50 = 0.04 mg/L). Additionally, in pot tests, compound IIc (EC50 = 3.63 mg/L) also had higher antifungal activity against R. solani than compound SCU2028 (EC50 = 7.63 mg/L). Furthermore, in vitro inhibitory activity against fungal SDH showed the inhibitory ability of compound IIc was equivalent with that of compound SCU2028, and molecular dynamics simulation of the SDH-compound IIc complex suggested that compound IIc could strongly bind to and interact with the binding site of SDH. CONCLUSION Novel aromatic carboxamides without a pyrazol group have potential as a class of SDHIs, and the strategy of replacing the pyrazol group with another aryl in the 'core' moiety might offer an alternative option in discovery of SDHI fungicides. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Aigui Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, People's Republic of China
| | - Jian Yang
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, People's Republic of China
| | - Ke Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, People's Republic of China
| | - Taiping Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, People's Republic of China
| | - Hong Jin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, People's Republic of China
| |
Collapse
|
16
|
Yang S, Li B, Tang J, Peng H, Pu C, Zhao C, Xu H. Structural optimization based on 4,5-dihydropyrazolo[1,5-a]quinazoline scaffold for improved insecticidal activities. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 195:105533. [PMID: 37666607 DOI: 10.1016/j.pestbp.2023.105533] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 09/06/2023]
Abstract
The long-term and irrational application of insecticides has increased the rate of development of pest resistance and caused numerous environmental issues. To address these problems, our previous work reported that 4,5-dihydropyrazolo[1,5-a]quinazoline (DPQ) is a class of gelled heterocyclic compounds that act on insect γ-aminobutyric acid receptors (GABAR). DPQ scaffold has no cross-resistance to existing insecticides, so the development of this scaffold is an interesting task for integrated pest management. In the present study, a novel series of 4,5-dihydropyrazolo[1,5-a]quinazolines (DPQs) were designed and synthesized based on pyraquinil, a highly insecticidal compound discovered in our previous work. Insecticidal activities of the target compounds against diamondback moth (Plutella xylostella), beet armyworm (Spodoptera exigua), fall armyworm (Spodoptera frugiperda), and red imported fire ant (Solenopsis invicta Buren) were evaluated. Compounds 6 and 12 showed the best insecticidal activity against Plutella xylostella (P. xylostella) (LC50 = 1.49 and 0.97 mg/L), better than pyraquinil (LC50 = 1.76 mg/L), indoxacarb and fipronil (LC50 = 1.80 mg/L). Meanwhile, compound 12 showed slow toxicity to Solenopsis invicta Buren (S. invicta), with a 5 d mortality rate of 98.89% at 0.5 mg/L that is similar to fipronil. Moreover, Electrophysiological studies against the PxRDL1 GABAR heterologously expressed in Xenopus oocytes indicated that compound 12 could act as a potent GABA receptor antagonist (2 μΜ, inhibition rate, 68.25%). Molecular docking results showed that Ser285 (chain A) and Thr289 (chain D) of P. xylostella GABAR participated in hydrogen bonding interactions with compound 12, and density functional theory (DFT) calculations suggested the importance of pyrazolo[1,5-a]quinazoline core in potency. This systematic study provides valuable clues for the development of DPQ scaffold in the field of agrochemicals, and compound 12 can be further developed as an insecticide and bait candidate.
Collapse
Affiliation(s)
- Shuai Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Benjie Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Jiahong Tang
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Hongxiang Peng
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Chunmei Pu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Chen Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China.
| | - Hanhong Xu
- National Key Laboratory of Green Pesticide, Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou 510642, People's Republic of China.
| |
Collapse
|
17
|
Leng XY, Zhao LX, Gao S, Ye F, Fu Y. Review on the Discovery of Novel Natural Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37466454 DOI: 10.1021/acs.jafc.3c03585] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The phytotoxicity of herbicides on crops is a major dilemma in agricultural production. Fortunately, the emergence of herbicide safeners is an excellent solution to this challenge, selectively enhancing the performance of herbicides in controlling weeds while reducing the phytotoxicity to crops. But owing to their potential toxicity, only a tiny proportion of safeners are commercially available. Natural products as safeners have been extensively explored, which are generally safe to mammals and cause little pollution to the environment. They are typically endogenous signal molecules or phytohormones, which are generally difficult to extract and synthesize, and exhibit relatively lower activity than commercial products. Therefore, it is necessary to adopt rational design approaches to modify the structure of natural safeners. This paper reviews the application, safener effects, structural characteristics, and modifications of natural safeners and provides insights on the discovery of natural products as potential safeners in the future.
Collapse
Affiliation(s)
- Xin-Yu Leng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- 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
| |
Collapse
|
18
|
Steinborn C, Tancredi A, Habiger C, Diederich C, Kramer J, Reingruber AM, Laber B, Freigang J, Lange G, Schmutzler D, Machettira A, Besong G, Magauer T, Barber DM. Investigations into Simplified Analogues of the Herbicidal Natural Product (+)-Cornexistin. Chemistry 2023; 29:e202300199. [PMID: 36807428 PMCID: PMC7614749 DOI: 10.1002/chem.202300199] [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: 01/19/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 02/22/2023]
Abstract
We report the design, synthesis and biological evaluation of simplified analogues of the herbicidal natural product (+)-cornexistin. Guided by an X-Ray co-crystal structure of cornexistin bound to transketolase from Zea mays, we attempted to identify the key interactions that are necessary for cornexistin to maintain its herbicidal profile. This resulted in the preparation of three novel analogues investigating the importance of substituents that are located on the nine-membered ring of cornexistin. One analogue maintained a good level of biological activity and could provide researchers insights in how to further optimize the structure of cornexistin for commercialization in the future.
Collapse
Affiliation(s)
- Christian Steinborn
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Aldo Tancredi
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Christoph Habiger
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Christina Diederich
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Jan Kramer
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Anna M Reingruber
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Bernd Laber
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Jörg Freigang
- Research & Development, Hit Discovery Bayer AG, Crop Science Division, Alfred-Nobel-Straße 50, 40789, Monheim am Rhein, Germany
| | - Gudrun Lange
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Dirk Schmutzler
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Anu Machettira
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Gilbert Besong
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| | - Thomas Magauer
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - David M Barber
- Research & Development, Weed Control Bayer AG, Crop Science Division, Industriepark Höchst, 65926, Frankfurt am Main, Germany
| |
Collapse
|
19
|
Hu Y, Gao Y, Ye J, Ma Z, Feng J, Liu X, Lei P, Szostak M. Suzuki-Miyaura Cross-Coupling of 2-Pyridyl Trimethylammonium Salts by N-C Activation Catalyzed by Air- and Moisture-Stable Pd-NHC Precatalysts: Application to the Discovery of Agrochemicals. Org Lett 2023; 25:2975-2980. [PMID: 37079757 DOI: 10.1021/acs.orglett.3c00741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
We report the first Suzuki-Miyaura cross-coupling of 2-pyridyl ammonium salts by highly selective N-C activation catalyzed by air- and moisture-stable Pd(II)-NHC (NHC = N-heterocyclic carbene) precatalysts. The use of well-defined and highly reactive [Pd(IPr)(3-CF3-An)Cl2] (An = aniline) or [Pd(IPr)(cin)Cl] (cin = cinnamyl) Pd(II)-NHC catalysts permits an exceptionally broad scope of the cross-coupling to furnish valuable biaryl and heterobiarylpyridines that are ubiquitous in medicinal chemistry and agrochemistry research. The overall process leverages the Chichibabin C-H amination of pyridines with N-C activation to enable an attractive strategy to the 2-pyridyl problem. The utility of the method to the discovery of potent agrochemicals is presented. Considering the importance of 2-pyridines and the versatility of N-C activation methods, we envision that this new C-H/N-C activation strategy will find broad application.
Collapse
Affiliation(s)
- Yuge Hu
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Yanqing Gao
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jiuhui Ye
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhiqing Ma
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Juntao Feng
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Xili Liu
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Peng Lei
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Michal Szostak
- Department of Chemistry, Rutgers, The State University of New Jersey, 73 Warren Street, Newark, New Jersey 07102, United States
| |
Collapse
|
20
|
Wang K, Wang B, Ma H, Wang Z, Liu Y, Wang Q. Natural Products for Pesticides Discovery: Structural Diversity Derivation and Biological Activities of Naphthoquinones Plumbagin and Juglone. Molecules 2023; 28:molecules28083328. [PMID: 37110562 PMCID: PMC10141837 DOI: 10.3390/molecules28083328] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/06/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Plant diseases and insect pests seriously affect the yield and quality of crops and are difficult to control. Natural products are an important source for the discovery of new pesticides. In this work, naphthoquinones plumbagin and juglone were selected as parent structures, and a series of their derivatives were designed, synthesized and evaluated for their fungicidal activities, antiviral activities and insecticidal activities. We found that the naphthoquinones have broad-spectrum anti-fungal activities against 14 types of fungus for the first time. Some of the naphthoquinones showed higher fungicidal activities than pyrimethanil. Compounds I, I-1e and II-1a emerged as new anti-fungal lead compounds with excellent fungicidal activities (EC50 values: 11.35-17.70 µg/mL) against Cercospora, arachidicola Hori. Some compounds also displayed good to excellent antiviral activities against the tobacco mosaic virus (TMV). Compounds I-1f and II-1f showed similar level of anti-TMV activities with ribavirin, and could be used as new antiviral candidates. These compound also exhibited good to excellent insecticidal activities. Compounds II-1d and III-1c displayed a similar level of insecticidal activities with matrine, hexaflumuron and rotenone against Plutella xylostella. In current study, plumbagin and juglone were discovered as parent structures, which lays a foundation for their application in plant protection.
Collapse
Affiliation(s)
- Kaihua Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Beibei Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Henan Ma
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Ziwen Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| |
Collapse
|
21
|
Huang S, Ma H, Wang Z, Zhang P, Li S, Li Y, Liu A, Li Y, Liu Y, Wang Q. Design, Synthesis, and Insecticidal and Fungicidal Activities of Ether/Oxime-ether Containing Isoxazoline Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5107-5116. [PMID: 36947168 DOI: 10.1021/acs.jafc.2c08161] [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: 06/18/2023]
Abstract
The existing agricultural insecticides have developed drug resistance from long-term use. Isoxazoline derivatives are new insecticides discovered in the 21st century. Because of their unique insecticidal mechanism, high selectivity, safety, and no significant cross resistance with the existing pesticides on the market, they have become a hot spot in the field of pesticide research. Herein, a series of novel isoxazoline derivatives containing ether and oxime-ether structures were designed and synthesized by a scaffold-hopping strategy using the pesticide fluralaner as a template structure. Through the investigation of insecticidal activity and the systematic structure-activity relationship, a series of compounds with high insecticidal activities were found, and compounds I-4, II-9, and II-13 with LC50 values of 0.00008-0.00036 mg/L against diamondback moth emerged as novel insecticide candidates. These compounds also exhibited broad spectrum fungicidal activities against 14 plant fungi. The current work provides a reference for the design of new isoxazoline compounds based on the scaffold-hopping strategy.
Collapse
Affiliation(s)
- Shisheng Huang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Henan Ma
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Ziwen Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Pengli Zhang
- Tianjin Ringpu Bio-technology Co., Ltd., Tianjin 300000, China
| | - Shoujun Li
- Tianjin Ringpu Bio-technology Co., Ltd., Tianjin 300000, China
| | - Yaling Li
- Tianjin Ringpu Bio-technology Co., Ltd., Tianjin 300000, China
| | - Ailing Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
- Tianjin Ringpu Bio-technology Co., Ltd., Tianjin 300000, China
| | - Yongqiang Li
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| |
Collapse
|
22
|
Shang J, Zhang Y, Yang N, Xiong L, Bian Q, Wang B. Synthesis and biological evaluation of novel pyridylpyrazole amides containing benzothiazole/thiourea/urea motif as pesticidal agents. PHOSPHORUS SULFUR 2023. [DOI: 10.1080/10426507.2023.2192935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Junfeng Shang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Yan Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Na Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Lixia Xiong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| | - Qiang Bian
- National Pesticide Engineering Research Center (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Baolei Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, China
| |
Collapse
|
23
|
Yan L, Gao Y, Li T, Wang X, Xie R, Liu Y, Xie Y, Wang Z, Lu A, Wang Q. Design, Synthesis, Antiviral and Fungicidal Activities of Novel Polycarpine Simplified Analogues. Bioorg Chem 2023; 135:106508. [PMID: 37023583 DOI: 10.1016/j.bioorg.2023.106508] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
Fungal and viral diseases account for 70-80% of agricultural production losses caused by microbial diseases. Synthetic fungicides and antiviral agents have been used to treat plant diseases caused by plant pathogenic fungi and viruses, but their use has been criticized due to their adverse side effects. As alternative strategies, natural fungicides and antiviral agents have attracted many researchers' interest in recent years. Herein, we designed and synthesized a series of novel polycarpine simplified analogues. Antiviral activity research against tobacco mosaic virus (TMV) revealed that most of the designed compounds have good antiviral activities. The virucidal activities of 4, 6d, 6f, 6h, and 8c are higher than that of polycarpine and similar to that of ningnanmycin. The structure simplified compound 8c was selected for further antiviral mechanism research which showed that compound 8c could inhibit the formation of 20S protein discs by acting on TMV coat protein. These compounds also displayed broad-spectrum fungicidal activities against 7 kinds of plant fungi. This work lays the foundation for the application of polycarpine simplified analogues in crop protection.
Collapse
|
24
|
Yao G, Wang M, Li B, Peng H, Yang S, Zhao C, Xu H. Design, synthesis, and biological activity of novel spiro-pyrazolo[1,5-a]quinazolines derivatives as potential insecticides. PEST MANAGEMENT SCIENCE 2023; 79:1164-1174. [PMID: 36371599 DOI: 10.1002/ps.7287] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/23/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Arylpyrazole insecticides display broad-spectrum insecticidal activity against insect pests. However, the high toxicity toward honeybees associated with fipronil prohibits its agronomic utility. To explore reducing the toxicity of aryl pyrazole analogs to bees, a series of new spiro-pyrazolo[1,5-a]quinazoline derivatives were designed and synthesized. RESULTS Bioassay results showed that these compounds exhibited good insecticidal activity. In particular, the insecticidal activity of compound 5f against Plutella xylostella larvae (median lethal contentration, LC50 = 1.43 mg L-1 ) was equivalent to that of fipronil. Moreover, some compounds also showed good insecticidal activity against Solenopsis invicta. Importantly, the bee toxicity study confirmed that compound 5f had much lower acute oral toxicity, with a median lethal dose (LD50 ) = 1.15 μg bee-1 that was three to four orders of magnitude greater than that of fipronil (0.0012 μg bee-1 ). Electrophysiological studies were conducted using honeybee γ-aminobutyric acid receptor heterologously expressed in Xenopus oocytes to explain the reduced bee toxicity of compound 5f. The inhibitory effect of compound 5f (16.29 μmol L-1 ) was determined to be approximately 700-fold lower than that of fipronil (0.023 μmol L-1 ). CONCLUSION These spiro-pyrazolo[1,5-a]quinazoline derivatives could be potential candidates and lead structures for the discovery of novel insecticides with low bee toxicity. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Guangkai Yao
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Mengfan Wang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Benjie Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Hongxiang Peng
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Shuai Yang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Chen Zhao
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| | - Hanhong Xu
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, College of Plant Protection, South China Agricultural University, Guangzhou, People's Republic of China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, People's Republic of China
| |
Collapse
|
25
|
Agboyibor C, Dong J, Effah CY, Drokow EK, Ampomah-Wireko M, Pervaiz W, Sangmor A, Ma X, Li J, Liu HM, Zhang P. Epigenetic compounds targeting pharmacological target lysine specific demethylase 1 and its impact on immunotherapy, chemotherapy and radiotherapy for treatment of tumor recurrence and resistance. Biomed Pharmacother 2023; 157:113934. [PMID: 36395607 DOI: 10.1016/j.biopha.2022.113934] [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: 09/17/2022] [Revised: 10/22/2022] [Accepted: 10/26/2022] [Indexed: 11/15/2022] Open
Abstract
It has been proven that metastatic recurrence and therapeutic resistance are linked. Due to the variability of individuals and tumors, as well as the tumor's versatility in avoiding therapies, therapy resistance is more difficult to treat. Therapy resistance has significantly restricted the clinical feasibility and efficacy of tumor therapy, despite the discovery of novel compounds and therapy combinations with increasing efficacy. In several tumors, lysine specific demethylase 1 (LSD1) has been associated to metastatic recurrence and therapeutic resistance. For researchers to better comprehend how LSD1-mediated tumor therapy resistance occurs and how to overcome it in various tumors, this study focused on the role of LSD1 in tumor recurrence and therapeutic resistance. The importance of therapeutically targeted LSD1 was also discussed. Most gene pathway signatures are related to LSD1 inhibitor sensitivity. However, some gene pathway signatures, especially in AML, negatively correlate with LSD1 inhibitor sensitivity, but targeting LSD1 makes the therapy-resistant tumor sensitive to physiological doses of conventional therapy. We propose that combining LSD1 inhibitor with traditional tumor therapy can help patients attain a complete response and prevent cancer relapse.
Collapse
Affiliation(s)
- Clement Agboyibor
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, Zhengzhou 450001, PR China; Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality Control and Evaluation, Zhengzhou University, Zhengzhou 450001, PR China; Collaborative Innovation Center of New Drug Research and Safety Evaluation of Henan Province; Zhengzhou University, Zhengzhou 450001, PR China; Institute of Drug Discovery and Development; Zhengzhou University, Zhengzhou 450001, PR China
| | - Jianshu Dong
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, Zhengzhou 450001, PR China; Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality Control and Evaluation, Zhengzhou University, Zhengzhou 450001, PR China; Collaborative Innovation Center of New Drug Research and Safety Evaluation of Henan Province; Zhengzhou University, Zhengzhou 450001, PR China
| | - Clement Yaw Effah
- College of Public Health, Zhengzhou University, Zhengzhou 450001, PR China
| | - Emmanuel Kwateng Drokow
- Department of Oncology, Zhengzhou University People's Hospital & Henan Provincial People's Hospital Henan, 450003, Zhengzhou, PR China
| | | | - Waqar Pervaiz
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, Zhengzhou 450001, PR China; Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality Control and Evaluation, Zhengzhou University, Zhengzhou 450001, PR China; Collaborative Innovation Center of New Drug Research and Safety Evaluation of Henan Province; Zhengzhou University, Zhengzhou 450001, PR China; Institute of Drug Discovery and Development; Zhengzhou University, Zhengzhou 450001, PR China
| | - Augustina Sangmor
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xinli Ma
- China-US(Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, PR China
| | - Jian Li
- China-US(Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, PR China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, Zhengzhou 450001, PR China; Institute of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; Key Laboratory of Henan Province for Drug Quality Control and Evaluation, Zhengzhou University, Zhengzhou 450001, PR China; Collaborative Innovation Center of New Drug Research and Safety Evaluation of Henan Province; Zhengzhou University, Zhengzhou 450001, PR China; Institute of Drug Discovery and Development; Zhengzhou University, Zhengzhou 450001, PR China.
| | - Peng Zhang
- Department of Bone and Soft Tissue Cancer, The Affiliated Cancer Hospital of Zhengzhou University (Henan Cancer Hospital), Zhengzhou, Henan province, PR China 450008.
| |
Collapse
|
26
|
Discovery of Hyrtinadine A and Its Derivatives as Novel Antiviral and Anti-Phytopathogenic-Fungus Agents. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238439. [PMID: 36500532 PMCID: PMC9738573 DOI: 10.3390/molecules27238439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 12/03/2022]
Abstract
Plant diseases caused by viruses and fungi have a serious impact on the quality and yield of crops, endangering food security. The use of new, green, and efficient pesticides is an important strategy to increase crop output and deal with the food crisis. Ideally, the best pesticide innovation strategy is to find and use active compounds from natural products. Here, we took the marine natural product hyrtinadine A as the lead compound, and designed, synthesized, and systematically investigated a series of its derivatives for their antiviral and antifungal activities. Compound 8a was found to have excellent antiviral activity against the tobacco mosaic virus (TMV) (inactivation inhibitory effect of 55%/500 μg/mL and 19%/100 μg/mL, curative inhibitory effect of 52%/500 μg/mL and 22%/100 μg/mL, and protection inhibitory effect of 57%/500 μg/mL and 26%/100 μg/mL) and emerged as a novel antiviral candidate. These compound derivatives displayed broad-spectrum fungicidal activities against 14 kinds of phytopathogenic fungi at 50 μg/mL and the antifungal activities of compounds 5c, 5g, 6a, and 6e against Rhizoctonia cerealis are higher than that of the commercial fungicide chlorothalonil. Therefore, this study could lay a foundation for the application of hyrtinadine A derivatives in plant protection.
Collapse
|
27
|
Lamberth C. The power of cross-indication testing: agrochemicals originally stemming from a different indication. PEST MANAGEMENT SCIENCE 2022; 78:4438-4445. [PMID: 35906817 DOI: 10.1002/ps.7100] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/19/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
Cross-indication testing is the assaying of final compounds, but also their intermediates or side products, from one agrochemical indication against target species of other product lines. This approach has proven to be a highly successful source of lead compounds, which led to several important crop protection products. This review article describes, which herbicides came from fungicides and insecticides, how fungicides have been obtained from herbicide and insecticide leads and which insecticides have their roots in herbicide and fungicide chemistry. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Clemens Lamberth
- Syngenta Crop Protection AG, Research Chemistry, Stein, Switzerland
| |
Collapse
|
28
|
Saleh EAM, Kotian SY, Dawsari AMAL, Hassan I, Husain K, Abishad PC, Byrappa K, Sharabi RSSA, Rai KML. Synthesis, Antifungal, and Antioxidant Evaluation of New Class of Thiazoloquinazoline Linked by Carbonyl with Nitrile, Phenylacrylonitrile, Pyrazole, Pyrazolo[1,5-a]pyrimidine and Triazolo[1,5-a]pyrimidine as Five and Six-Membered Heterocycles Derivatives. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1068162022060206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
29
|
Madushanka A, Verma N, Freindorf M, Kraka E. Papaya Leaf Extracts as Potential Dengue Treatment: An In-Silico Study. Int J Mol Sci 2022; 23:ijms232012310. [PMID: 36293162 PMCID: PMC9610845 DOI: 10.3390/ijms232012310] [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: 07/26/2022] [Revised: 10/04/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022] Open
Abstract
Dengue fever (DF), dengue hemorrhagic fever (DHF), and dengue shock syndrome (DSS) cause serious public health problems, with nearly 390 million people affected and 20,000 deaths per year in tropical and subtropical countries. Despite numerous attempts, no antiviral drug or vaccine is currently available to combat the manifestation. The challenge of discovering an efficient vaccine is enhanced by the surplus presence of efficient vectors and drug resistance from the virus. For centuries, papaya (Carica papaya) extracts have been traditionally used to treat DF, DHF, and DSS. In the present study, we systematically investigated seven compounds isolated from papaya leaf extract with regard to their potential as inhibitors for non-structural (NS) proteins, NS3 and NS5, which play a crucial role in viral RNA replication. The computational tools applied stretched across classical molecular docking, molecular dynamics (MD) simulations and SwissADME used to calculate binding affinities; binding free energies; Absorption, Distribution, Metabolism, and Excretion (ADME); and drug-likeness properties, thus, identifying Kaempferol, Chlorogenic acid, and Quercetin as potential candidates, with Kaempferol and Quercetin scoring best. Therefore, for the Kaempferol and Quercetin complexes, hybrid quantum mechanical/molecular mechanical (QM/MM) geometry and frequency calculations were performed, followed by the local mode analysis developed in our group to quantify Kaempferol-NS and Quercetin-NS hydrogen bonding. Given the non-toxic nature and the wide availability of the Kaempferol and Quercetin papaya extract in almost all of the susceptible regions, and our results showing high NS3 and NS5 binding affinities and energies, strong hydrogen bonding with both NS3 and NS5, and excellent ADME properties, we suggest Kaempferol and Quercetin as a strong NS3 and NS5 inhibitor to be further investigated in vitro.
Collapse
|
30
|
Barber DM. A Competitive Edge: Competitor Inspired Scaffold Hopping in Herbicide Lead Optimization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11075-11090. [PMID: 35271269 DOI: 10.1021/acs.jafc.1c07910] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Over the years, scaffold hopping has proven to be a powerful tool in the agrochemical optimization process. It offers the opportunity to modify known molecular lead structures to improve a range of parameters, including biological efficacy and spectrum, physicochemical properties, toxicity, stability, and to secure new intellectual property. Very often the disclosure of a new chemical structure can spark a multitude of competitor activities, where scaffold hopping plays a crucial role in the optimization process as well as for the generation of new intellectual property. Herein, recent examples of scaffold hopping in early phase herbicide research based on competitor inspired activities will be discussed using examples of how these research campaigns can often result in the registration of new crop protection products.
Collapse
Affiliation(s)
- David M Barber
- Research and Development, Weed Control Chemistry, Bayer AG, Crop Science Division, Industriepark Höchst, 65926 Frankfurt am Main, Germany
| |
Collapse
|
31
|
Zhou C, Wang X, Quan X, Cheng J, Li Z, Maienfisch P. Silicon-Containing Complex II Acaricides─Design, Synthesis, and Pharmacological Optimization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11063-11074. [PMID: 35575634 DOI: 10.1021/acs.jafc.2c00804] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bioisosteric replacement has been proven to be a powerful strategy in life science research. In this review, general aspects of carbon-silicon bioisosteric substitution and its applications in pharmaceutical and crop protection research are described. Carbon and their silicon analogues possess similar intrinsic properties. Replacing carbon with silicon in pharmaceuticals and pesticides has shown to result in positive effects on efficacy and selectivity, physicochemical properties, and bioavailability and also to eliminate or improve human or environmental safety properties as well as to provide novelty and new intellectual property in many cases. Furthermore, the application of carbon-silicon substitution in the search for new complex II acaricides is highlighted. This research led to the discovery of sila-cyflumetofen 23a and other silicon-containing analogues of cyflumetofen that match or exceed the acaricidal activity of cyflumetofen. The molecular design strategy, synthetic aspects, biological activity, computational modeling work, and structure-activity relationships will be discussed.
Collapse
Affiliation(s)
- Cong Zhou
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xin Wang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xiaocao Quan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- CreInSol MCB, CH-4118 Rodersdorf, Switzerland
| |
Collapse
|
32
|
Lamberth C. Insertion of Small Flexible Linkers as a Useful Scaffold Hopping Tool in Agrochemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11011-11018. [PMID: 35416648 DOI: 10.1021/acs.jafc.1c07971] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Inserting small flexible linkers of only one- to three-atom chain lengths into a molecular backbone is an important scaffold hopping manipulation. Analogues derived from biologically active compounds through the utilization of such a strategy are often similar in shape and physicochemical properties and, therefore, likely to exhibit similar potency. This review will demonstrate how the elongation with oxygen, amino, methylene, ethylene, vinyl, ethynyl, and CH2O bridges led to the discovery of highly active agrochemicals.
Collapse
Affiliation(s)
- Clemens Lamberth
- Chemical Research, Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| |
Collapse
|
33
|
Jackson V, Jordan L, Burgin RN, McGaw OJS, Muir CW, Ceban V. Application of Molecular-Modeling, Scaffold-Hopping, and Bioisosteric Approaches to the Discovery of New Heterocyclic Picolinamides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11031-11041. [PMID: 35852973 DOI: 10.1021/acs.jafc.2c03755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Macrocyclic natural products and their derivatives are a valuable source for biologically active crop protection products and have had significant impact on the development of conventional agrochemicals. However, they can be challenging starting points for lead-generation efforts because of their size, structural complexity, and developability. Using molecular modeling and electrostatic analysis, alternative bicyclic isosteres were identified as replacements for the antifungal nine-membered macrocycle UK-2A. By application of a structure-based conformational approach, a series of heterocyclic replacements were derivatized to deliver promising fungicidal activity and scaffold bioisosteres were further diversified to investigate structure-activity relationships.
Collapse
Affiliation(s)
- Victoria Jackson
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Linda Jordan
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Ryan N Burgin
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Oliver J S McGaw
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Calum W Muir
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| | - Victor Ceban
- Globachem Discovery, Mereside, Alderley Park, Macclesfield SK10 4TG, United Kingdom
| |
Collapse
|
34
|
Jeschke P, Lösel P, Hellwege E, Dietz M, Herrmann S, Gutbrod O. N-Hetaryl-[2(1 H)-pyridinyliden]cyanamides: A New Class of Systemic Insecticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11097-11108. [PMID: 35749741 DOI: 10.1021/acs.jafc.2c00347] [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: 06/15/2023]
Abstract
The new chemical class N-hetaryl-[2(1H)-pyridinylidene]cyanamides were inspired by the long known five-ring structure 2-chloro-5-[2-(nitro-methylene)-1-imidazolidinyl]-pyridine (Shell) and the current development candidate flupyrimin (Meiji Seika Pharma) via scaffold hopping and the concept for designing "shortened structures" by omitting the "methylene link" as a structural feature. The most active N-hetaryl-[2(1H)-pyridinylidene]cyanamides can be synthesized on a technical scale by a simple manufacturing procedure. As full nicotinic acetylcholine receptor (nAChR) agonists, the compounds bind with low affinity at the orthosteric binding site of nAChR. In molecular modeling studies, structural differences are visible in the superposition of active N-[6'-(trifluoromethyl)[1(2H),3'-bipyridin]-2-ylidene]cyanamide onto imidacloprid (IMD) and sulfoxaflor (SXF) in bound conformation. On the basis of their physicochemical properties, the most active xylem systemic candidates offer excellent aphicidal activity in vegetables and cotton, when applied as a foliar spray, by soil drench application, or, in particular, as seed dressing for seed treatment uses. Selected candidates show good plant compatibility and reveal a better risk profile with respect to bee pollinators than the majority of currently registered nAChR competitive modulators for seed treatment uses. Applied as a seed dressing in greenhouse profiling, good to excellent control of different aphid species has been observed. In field trials, an interesting level of activity potential against cereal grain aphids (inclusive virus vector control), corn rootworm, and wireworm could be demonstrated. According to molecular modeling investigations (Fukui functions, dipole moments, and electrostatic potentials), there is a broad scope for structure optimization of the chemical class leading to proposals for novel bicyclic insecticides.
Collapse
Affiliation(s)
- Peter Jeschke
- Research & Development, Pest Control Chemistry, Bayer AG, Crop Science, Building 6550, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Peter Lösel
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Elke Hellwege
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Michael Dietz
- Seed Growth, Bayer AG, Crop Science, Building 6100, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Stefan Herrmann
- Research & Development, Pest Control Biology, Bayer AG, Crop Science, Building 6220, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| | - Oliver Gutbrod
- Computational Life Science, Bayer AG, Crop Science, Building 6550, Alfred-Nobel-Straße 50, D-40789 Monheim am Rhein, Germany
| |
Collapse
|
35
|
Cao X, Yang H, Liu C, Zhang R, Maienfisch P, Xu X. Bioisosterism and Scaffold Hopping in Modern Nematicide Research. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11042-11055. [PMID: 35549340 DOI: 10.1021/acs.jafc.2c00785] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The application of agrochemicals is critical to global food safety. Nowadays, environmentally friendly green agrochemicals are the trend in field crop protection. The research and development of nematicides absorbed more attention as a typical representation of agrochemicals. This review describes the origin of recently commercialized nematicides, the application of bioisosterism and scaffold hopping in the discovery and optimization of agrochemicals, especially nematicides, and novel bioisosteric design strategies for the identification of fluensulfone analogues. Pesticide repurposing, high-throughput screening, computer-aided drug design, and incorporation of known pharmacophoric fragments have been the most successful approach for the discovery of new nematicides. As outlined, the strategies of bioisosteric replacements and scaffold hopping have been very successful approaches in the search for new nematicides for sustainable crop protection. In the exploration of novel fluensulfone analogues with nematicidal activity, bioisosteric replacement of sulfone by amide, chain extension by insertion of a methylene group, and reversal of the amide group have proven to be successful approaches and yielded new and highly active fluensulfone analogues. These attempts might result in compounds with an optimal balance of steric, hydrophobic, electronic, and hydrogen-bonding properties and contribute to deal with the complex problem during the research and development of new nematicides. Further ideas are also put forward to provide new approaches for the molecular design of nematicides.
Collapse
Affiliation(s)
- Xiaofeng Cao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Haiping Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Cheng Liu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Ruifeng Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- CreInSol Consulting & Biocontrols, CH-4118 Rodersdorf, Switzerland
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| |
Collapse
|
36
|
Chen M, Li Z, Shao X, Maienfisch P. Scaffold-Hopping Approach To Identify New Chemotypes of Dimpropyridaz. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11109-11122. [PMID: 35412307 DOI: 10.1021/acs.jafc.2c00636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Dimpropyridaz is a pyrazole carboxamide insecticide with a novel mode of action, currently under worldwide development by BASF, providing excellent activity against sucking pests. A series of dimpropyridaz analogues were designed to investigate the impact of bioisosteric heterocyclic replacements on the biological activity and molecular properties. Focus was given to prepare analogues where the 4-pyridazinyl moiety was replaced by 5-pyrimidinyl, 2-pyrimidinyl, 3-pyridazinyl, and 2-pyrazinyl groups. Five different synthetic routes were developed for the preparation of these analogues, delivering the target compounds in moderate to good yields. We explained some aspects of the observed structure-activity relationship by a density functional theory (DFT) calculation and DFT-derived Multiwfn and VMD program models. These findings provide first insights into the important role of the 4-pyridazinyl heterocyclic moiety in the pyrazole carboxamide insecticide chemical class and the mechanism of action of dimpropyridaz.
Collapse
Affiliation(s)
- Meijun Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- CreInSol Consulting & Biocontrols, CH-4118 Rodersdorf, Switzerland
| |
Collapse
|
37
|
Zhang W, Lahm GP, Pahutski TF, Hughes KA. Applying a Bioisosteric Replacement Strategy in the Discovery and Optimization of Mesoionic Pyrido[1,2- a]pyrimidinone Insecticides: A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11056-11062. [PMID: 35394767 DOI: 10.1021/acs.jafc.2c00697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mesoionic pyrido[1,2-a]pyrimidinones are a unique class of heterocyclic compounds. Compounds from this class with a n-propyl group substituted at the 1 position of the mesoionic core were discovered with interesting insecticidal activity in our screen. In this overview, we showcase how a bioisosteric replacement strategy was applied during the discovery and optimization of this class of compounds. Through exploring various substituents at the 1 position, evaluating a variety of mesoionic bicyclic ring scaffolds, and examining substituents on the phenyl group at the 3 position of the mesoionic core as well as substituents on the mesoionic ring skeleton, many compounds were discovered with excellent hopper activity or potent activity against a wide range of Lepidoptera. Ultimately, dicloromezotiaz was identified for commercial development to control a broad spectrum of lepidopteran pests.
Collapse
Affiliation(s)
- Wenming Zhang
- Stine Research Center, FMC Ag Solutions, 1090 Elkton Road, Newark, Delaware 19711, United States
| | - George P Lahm
- Stine Research Center, FMC Ag Solutions, 1090 Elkton Road, Newark, Delaware 19711, United States
| | - Thomas F Pahutski
- Stine Research Center, FMC Ag Solutions, 1090 Elkton Road, Newark, Delaware 19711, United States
| | - Kenneth A Hughes
- Stine Research Center, FMC Ag Solutions, 1090 Elkton Road, Newark, Delaware 19711, United States
| |
Collapse
|
38
|
Chen M, Li Z, Shao X, Maienfisch P. Bioisosteric-Replacement-Driven Lead Optimization of Tyclopyrazoflor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11123-11137. [PMID: 35561416 DOI: 10.1021/acs.jafc.2c00654] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A heterocyclic replacement strategy has been applied attempting to further optimize the biological properties of the new insecticide tyclopyrazoflor, a pyridinyl-pyrazole compound with excellent activity against sap-feeding insects recently discovered by Corteva. Our research program on this novel chemical class of insecticide was targeted to evaluate the importance of both the pyridyl and pyrazole moieties on the biological activity, properties, and structure-activity. Synthetic methodologies have been developed delivering our designed target compounds in moderate to good yields. In our attempt to rationalize the biological activity differences of tyclopyrazoflor analogues, a potential surface analysis based on a density functional theory (DFT) calculation and DFT-derived Multiwfn and VMD program model was performed. Furthermore, the SwissBioisostere online database was applied as a great source for inspiration for bioisosteric replacements.
Collapse
Affiliation(s)
- Meijun Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- CreInSol Consulting & Biocontrols, CH-4118 Rodersdorf, Switzerland
| |
Collapse
|
39
|
Lamberth C. Reversal of Functional Groups as a Useful Scaffold Hopping Tool in Agrochemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:11005-11010. [PMID: 35380820 DOI: 10.1021/acs.jafc.1c08009] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Reverting the orientation of a functional group by exchanging molecular parts of it is an important scaffold hopping manipulation, as biologically active compounds and their analogs, which underwent such a transformation, are often similar in shape and physicochemical properties and therefore likely in their potency as well. This review will demonstrate, how the inversion of carboxamides, sulfonamides, carbamates, oximes, hydrazones, O,S-acetals, and ethers led to the discovery of highly active agrochemicals.
Collapse
Affiliation(s)
- Clemens Lamberth
- Chemical Research, Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| |
Collapse
|
40
|
Current medicinal chemistry strategies in the discovery of novel HIV-1 ribonuclease H inhibitors. Eur J Med Chem 2022; 243:114760. [PMID: 36152387 DOI: 10.1016/j.ejmech.2022.114760] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/29/2022] [Accepted: 09/06/2022] [Indexed: 11/23/2022]
Abstract
During HIV-1 genome replication, the viral reverse transcriptase-associated ribonuclease H (RT-associated RNase H) activity hydrolyzes the RNA strand of RNA/DNA heteroduplex intermediates. As of today, HIV-1 RNase H inhibitors (RHIs) remain at an investigational level, although none of them reached clinical trials. Therefore, RNase H remains as an attractive target for drug design and development. In this paper, we review the current status of medicinal chemistry strategies aimed at the discovery of novel RHIs, while discussing problems encountered in their characterization and further development, thereby providing an update on recent progress in the field.
Collapse
|
41
|
Cao X, Qiu D, Zhang R, Li Z, Xu X. Synthesis, nematicidal evaluation, and SAR study of benzofuran derivatives containing 2-carbonyl thiophene. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
42
|
Lee S, Jena R, Odom AL. Substituted pyridines from isoxazoles: scope and mechanism. Org Biomol Chem 2022; 20:6630-6636. [PMID: 35924784 DOI: 10.1039/d2ob00779g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of isoxazoles with enamines leads to an inverse electron-demand hetero-Diels-Alder reaction that produces substituted pyridines in the presence of TiCl4(THF)2 and titanium powder. The reaction is highly regioselective with only a single isomer of the product observed by GC/MS and tolerant of many common functional groups. The transformation was examined computationally, and it was found that TiCl4 (or a similar Lewis acid) likely acts to catalyze the reaction. After the initial [4 + 2]-cycloaddition, the oxaza-[2.2.1]-bicycle produced likely ring opens before amine loss to give an N-oxide. The pyridine is then obtained after reduction with TiCl4 and titanium powder.
Collapse
Affiliation(s)
- Seokjoo Lee
- Michigan State University, Department of Chemistry, 578 S. Shaw Ln, East Lansing, Michigan 48824, USA.
| | - Rashmi Jena
- Michigan State University, Department of Chemistry, 578 S. Shaw Ln, East Lansing, Michigan 48824, USA.
| | - Aaron L Odom
- Michigan State University, Department of Chemistry, 578 S. Shaw Ln, East Lansing, Michigan 48824, USA.
| |
Collapse
|
43
|
Wang Y, Kou S, Huo J, Sun S, Wang Y, Yang H, Zhao S, Tang L, Han L, Zhang J, Chen L. Design, Synthesis, and Evaluation of Novel 4-Chloropyrazole-Based Pyridines as Potent Fungicide Candidates. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9327-9336. [PMID: 35856648 DOI: 10.1021/acs.jafc.2c02350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A rational molecular design approach was developed in our laboratory to guide the discovery of novel sterol biosynthesis inhibitors. Based on the application of bioactivities of heterocyclic rings and molecular docking targeting the sterol biosynthesis 14α-demethylase, a series of 4-chloropyrazole-based pyridine derivatives were rationally designed, synthesized, and characterized and their fungicidal activities were also evaluated. Bioassay results showed that 7e, 7f, and 7m exhibited commendable, diverse antifungal actions that are comparable to those of the positive controls imazalil and triadimefon. The active compounds' mode of action was further studied by microscopy observations, Q-PCR, and enzyme inhibition assay and discovered that target compounds affect fungal sterol biosynthesis via disturbing RcCYP51 enzyme system. These findings support that their fungicidal mode of action still targets the cytochrome P450-dependent 14α-demethylase as the molecular design did at first. The above results strongly suggest that our rational molecular design protocol is not only practical but also efficient.
Collapse
Affiliation(s)
- Ying Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Song Kou
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Susu Sun
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Yanen Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Hongwei Yang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Shiyong Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lijun Han
- College of Science, China Agricultural University, Beijing 100193, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
- Biological Control Center of Plant Diseases and Plant Pests of Hebei Province, Baoding 071001, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| |
Collapse
|
44
|
Li G, Xiao K, Shi M, Shuai J, Xu Z, Li Z, Cheng J. 4-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-d]pyrimidine derivatives: design, synthesis, insecticidal assay and binding mode studies. Chem Biodivers 2022; 19:e202200236. [PMID: 35781793 DOI: 10.1002/cbdv.202200236] [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: 03/15/2022] [Accepted: 07/02/2022] [Indexed: 11/09/2022]
Abstract
A series of 4-oxo-4,5,6,7-tetrahydro-1 H -pyrazolo[3,4- d ]pyrimidine derivatives were designed and synthesized based on the fipronil low energy conformation by scaffold hopping strategy. Physicochemical properties calculation, insecticidal activities evaluation and binding mode studies were also performed. As a result, the insecticidal activities of the target compounds were lower than that of fipronil. The differences in binding mode between these compounds and fipronil may be the major reason for reduced insecticidal activities.
Collapse
Affiliation(s)
- Guanglong Li
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, 200237, Shanghai, CHINA
| | - Keya Xiao
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, Shanghai, CHINA
| | - Man Shi
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, Shanghai, CHINA
| | - Jing Shuai
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, Shanghai, CHINA
| | - Zhiping Xu
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, Shanghai, CHINA
| | - Zhong Li
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, Shanghai, CHINA
| | - Jiagao Cheng
- East China University of Science and Technology, School of pharmacy, Meilong Road 130, 200237, Shanghai, CHINA
| |
Collapse
|
45
|
Lamberth C. Latest Research Trends in Agrochemical Fungicides: Any Learnings for Pharmaceutical Antifungals? ACS Med Chem Lett 2022; 13:895-903. [DOI: 10.1021/acsmedchemlett.2c00113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/04/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Clemens Lamberth
- Research Chemistry, Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| |
Collapse
|
46
|
Sun S, Chen L, Huo J, Wang Y, Kou S, Yuan S, Fu Y, Zhang J. Discovery of Novel Pyrazole Amides as Potent Fungicide Candidates and Evaluation of Their Mode of Action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3447-3457. [PMID: 35282681 DOI: 10.1021/acs.jafc.2c00092] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A rational molecule design strategy based on scaffold hopping was applied to discover novel leads, and then a series of novel pyrazole amide derivatives were designed, synthesized, characterized, and evaluated for their antifungal activities. Bioassay results indicated that some target compounds such as S3, S12, and S26 showed good in vivo antifungal activities; among them, S26 exhibited commendable in vivo protective activity with an 89% inhibition rate against Botrytis cinerea on cucumber at 100 μg/mL that is comparable to positive controls boscalid, isopyrazam, and fluxapyroxad. Microscopy observations suggested that S26 affects the normal fungal growth. Fluorescence quenching analysis and SDH (succinate dehydrogenase) enzymatic inhibition studies validated that S26 may not be an SDH inhibitor. Based on induction of plant defense responses testing, S26 enhanced the accumulation of RBOH, WRKY6, WRKY30, PR1, and PAL defense-related genes expression and the defense-associated enzyme phenylalanine ammonia lyase (PAL) expression on cucumber. These findings support that S26 not only displayed direct fungicidal activity but also exhibited plant innate immunity stimulation activity, and it could be used as a promising plant defense-related fungicide candidate.
Collapse
Affiliation(s)
- Susu Sun
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Ying Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Song Kou
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Shitao Yuan
- Agricultural Science and Education Center of Hebei Agricultural University, Baoding 071001, P. R. China
| | - Yining Fu
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
- Biological Control Center of Plant Diseases and Plant Pests of Hebei Province, Baoding 071001, P. R. China
| |
Collapse
|
47
|
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
| |
Collapse
|
48
|
Gao W, Zhang Y, Ye R, Qi X, Chen L, Liu X, Tang L, Chen L, Chen H, Fan Z. Discovery of Novel Triazolothiadiazines as Fungicidal Leads Targeting Pyruvate Kinase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1047-1057. [PMID: 35077164 DOI: 10.1021/acs.jafc.1c07022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Pyruvate kinase (PK) was discovered as a potent new target for novel fungicide development. A series of novel triazolothiadiazine derivatives were rationally designed and synthesized by a ring expansion strategy and computer-aided pesticide design using the 3D structure of Rhizoctonia solani PK (RsPK) obtained by homology modeling as a receptor and our previously discovered lead YZK-C22 as a ligand. The in vitro bioassay results indicated that compounds 4g, 6h, 6m, 6n, 6o, and 6p exhibited good activity against R. solani with the EC50 values falling between 10.99 and 72.76 μM. Especially, 6m showed similar potency to YZK-C22 (10.99 vs 11.97 μM of the EC50 value, respectively). The in vivo bioassay results suggested that 6m against R. solani at a concentration of 200 μg/mL displayed a numerically higher inhibition than YZK-C22 (70 vs 60%, respectively). A field experiment validated that 6m at an application rate of 120 g ai/ha showed comparable efficacy against R. solani to thifluzamide at an application rate of 80 g ai/ha (77.80 vs 84.5%, respectively). Enzymatic inhibition suggested that the potency of 6m was about twofold lower than that of YZK-C22 (67.30 vs 32.64 μM of IC50, respectively). Fluorescence quenching studies validated that RsPK was quenched by both 6m and YZK-C22, implying that they both might act at the same target site of PK. A possible binding conformation of 6m in the RsPK active site was depicted by molecular docking. Our studies suggest that 6m could be a fungicidal lead targeting PK.
Collapse
Affiliation(s)
- Wei Gao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yue Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Rong Ye
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xin Qi
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lei Chen
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xiaoyu Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Liangfu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Hongyu Chen
- The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
- Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
49
|
Nakano H, Miyao T, Swarit J, Funatsu K. Sparse Topological Pharmacophore Graphs for Interpretable Scaffold Hopping. J Chem Inf Model 2021; 61:3348-3360. [PMID: 34264667 DOI: 10.1021/acs.jcim.1c00409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The aim of scaffold hopping (SH) is to find compounds consisting of different scaffolds from those in already known active compounds, giving an opportunity for unexplored regions of chemical space. We previously demonstrated the usefulness of pharmacophore graphs (PhGs) for this purpose through proof-of-concept virtual screening experiments. PhGs consist of nodes and edges corresponding to pharmacophoric features (PFs) and their topological distances. Although PhGs were effective in SH, they are hard to interpret as they are complete graphs. Herein, we introduce an intuitive representation of a molecule, termed as sparse pharmacophore graphs (SPhG) by keeping the topological distances among PFs as much as possible while reducing the number of edges in the graphs. Several benchmark calculations quantitatively confirmed the sparseness of the graphs and the preservation of topological distances among pharmacophoric points. As proof-of-concept applications, virtual screening (VS) trials for SH were conducted using active and inactive compounds from ChEMBL and PubChem databases for three biological targets: thrombin, tyrosine kinase ABL1, and κ-opioid receptor. The performances of VS were comparable with using fully connected PhGs. Furthermore, highly ranked SPhGs were interpretable for the three biological targets, in particular for thrombin, for which selected SPhGs were in agreement with the structure-based interpretation.
Collapse
Affiliation(s)
- Hiroshi Nakano
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Tomoyuki Miyao
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan.,Data Science Center, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Jasial Swarit
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan.,Data Science Center, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Kimito Funatsu
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan.,Data Science Center, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan.,Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
50
|
Comprehensive machine learning based study of the chemical space of herbicides. Sci Rep 2021; 11:11479. [PMID: 34075109 PMCID: PMC8169684 DOI: 10.1038/s41598-021-90690-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 05/17/2021] [Indexed: 11/23/2022] Open
Abstract
Widespread use of herbicides results in the global increase in weed resistance. The rotational use of herbicides according to their modes of action (MoAs) and discovery of novel phytotoxic molecules are the two strategies used against the weed resistance. Herein, Random Forest modeling was used to build predictive models and establish comprehensive characterization of structure–activity relationships underlying herbicide classifications according to their MoAs and weed selectivity. By combining the predictive models with herbicide-likeness rules defined by selected molecular features (numbers of H-bond acceptors and donors, logP, topological and relative polar surface area, and net charge), the virtual stepwise screening platform is proposed for characterization of small weight molecules for their phytotoxic properties. The screening cascade was applied on the data set of phytotoxic natural products. The obtained results may be valuable for refinement of herbicide rotational program as well as for discovery of novel herbicides primarily among natural products as a source for molecules of novel structures and novel modes of action and translocation profiles as compared with the synthetic compounds.
Collapse
|