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Geng W, Zhang Q, Liu L, Tai G, Gan X. Design, Synthesis, and Herbicidal Activity of Novel Tetrahydrophthalimide Derivatives Containing Oxadiazole/Thiadiazole Moieties. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:17191-17199. [PMID: 39054861 DOI: 10.1021/acs.jafc.4c01389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Protoporphyrinogen oxidase (PPO, EC 1.3.3.4) has a high status in the development of new inhibitors. To develop novel and highly effective PPO inhibitors, active substructure linking and bioisosterism replacement strategies were used to design and synthesize novel tetrahydrophthalimide derivatives containing oxadiazole/thiadiazole moieties, and their inhibitory effects on Nicotiana tobacco PPO (NtPPO) and herbicidal activity were evaluated. Among them, compounds B11 (Ki = 9.05 nM) and B20 (Ki = 10.23 nM) showed significantly better inhibitory activity against NtPPO than that against flumiclorac-pentyl (Ki = 46.02 nM). Meanwhile, compounds A20 and B20 were 100% effective against three weeds (Abutilon theophrasti, Amaranthus retroflexus, and Portulaca oleracea) at 37.5 g a.i./ha. It was worth observing that compound B11 was more than 90% effective against three weeds (Abutilon theophrasti, Amaranthus retroflexus, and Portulaca oleracea) at 18.75 and 9.375 g a.i./ha. It was also safer to rice, maize, and wheat than flumiclorac-pentyl at 150 g a.i./ha. In addition, the molecular docking results showed that compound B11 could stably bind to NtPPO and it had a stronger hydrogen bond with Arg98 (2.9 Å) than that of flumiclorac-pentyl (3.2 Å). This research suggests that compound B11 could be used as a new PPO inhibitor, and it could help control weeds in agricultural production.
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Affiliation(s)
- Wang Geng
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Qi Zhang
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Li Liu
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Gangyin Tai
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Xiuhai Gan
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
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2
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Almenhali AZ, Eissa S. Aptamer-based biosensors for the detection of neonicotinoid insecticides in environmental samples: A systematic review. Talanta 2024; 275:126190. [PMID: 38703483 DOI: 10.1016/j.talanta.2024.126190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/29/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
Neonicotinoids, sometimes abbreviated as neonics, represent a class of neuro-active insecticides with chemical similarities to nicotine. Neonicotinoids are the most widely adopted group of insecticides globally since their discovery in the late 1980s. Their physiochemical properties surpass those of previously established insecticides, contributing to their popularity in various sectors such as agriculture and wood treatment. The environmental impact of neonicotinoids, often overlooked, underscores the urgency to develop tools for their detection and understanding of their behavior. Conventional methods for pesticide detection have limitations. Chromatographic techniques are sensitive but expensive, generate waste, and require complex sample preparation. Bioassays lack specificity and accuracy, making them suitable as preliminary tests in conjunction with instrumental methods. Aptamer-based biosensor is recognized as an advantageous tool for neonicotinoids detection due to its rapid response, user-friendly nature, cost-effectiveness, and suitability for on-site detection. This comprehensive review represents the inaugural in-depth analysis of advancements in aptamer-based biosensors targeting neonicotinoids such as imidacloprid, thiamethoxam, clothianidin, acetamiprid, thiacloprid, nitenpyram, and dinotefuran. Additionally, the review offers valuable insights into the critical challenges requiring prompt attention for the successful transition from research to practical field applications.
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Affiliation(s)
- Asma Zaid Almenhali
- Department of Chemistry, Khalifa University of Science and Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates
| | - Shimaa Eissa
- Department of Chemistry, Khalifa University of Science and Technology, Abu Dhabi, P.O. Box 127788, United Arab Emirates; Center for Catalysis and Separations, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, United Arab Emirates.
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3
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Dobson LS, Zhang Q, McKay BA, Oke O, Isanbor C, Khan MF, Piscelli BA, Cordes DB, Cormanich RA, Murphy CD, O’Hagan D. Aryl (β,β',β″-Trifluoro)- tert-butyl: A Candidate Motif for the Discovery of Bioactives. Org Lett 2023; 25:6802-6807. [PMID: 37682007 PMCID: PMC10521027 DOI: 10.1021/acs.orglett.3c02236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Indexed: 09/09/2023]
Abstract
The (β,β',β″-trifluoro)-tert-butyl (TFTB) group has received very little attention in the literature. This work presents a direct synthesis of this group and explores its properties. The TFTB group arises when the methyl groups of a tert-butyl moiety are exchanged for fluoromethyl groups. Sequential fluoromethylations result in a decrease of Log P (increasing hydrophilicity), ultimately by 1.7 Log P units in the TFTB group relative to that of tert-butyl benzene itself. A focus is placed on synthetic transformations, conformational analysis, and metabolism of the TFTB group in the context of presenting a favorable profile as a motif for the discovery of bioactives.
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Affiliation(s)
- Luca S. Dobson
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Qingzhi Zhang
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Benjamin A. McKay
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Oluwayinka Oke
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
- Chemistry
Department, University of Lagos, Akoka, Lagos 101245, Nigeria
| | | | - Mohd Faheem Khan
- School
of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Bruno A. Piscelli
- Chemistry
Institute, University of Campinas, Monteiro Lobato Street, Campinas, Sao Paulo 13083-862, Brazil
| | - David B. Cordes
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Rodrigo A. Cormanich
- Chemistry
Institute, University of Campinas, Monteiro Lobato Street, Campinas, Sao Paulo 13083-862, Brazil
| | - Cormac D. Murphy
- School
of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - David O’Hagan
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
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Zhu K, Lu X, Li X, Han Q, Zou R, Yang Z, Li H, Duan H. Design and structure optimization of novel butenolide derivatives as low bee-toxicity candidates. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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5
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Sparks TC, Lorsbach BA. Insecticide discovery-"Chance favors the prepared mind". PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 192:105412. [PMID: 37105622 DOI: 10.1016/j.pestbp.2023.105412] [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: 02/08/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
New options for pest insect control, including new insecticides, are needed to ensure a plentiful food supply for an expanding global population. Any new insecticides must meet the increasingly stringent regulatory requirements for mammalian and environmental safety, and also address the need for new chemistries and modes of action to deal with resistance to available insecticides. As underscored by a paraphrase of a quote from Louis Pasteur "Chance favors the prepared mind", the agrochemical industry uses a variety of approaches that attempt to improve on "chance" for the discovery of new insecticides. Although there are a number of approaches to the discovery of new insecticidal active ingredients (AIs), historically most insecticides are based on a pre-existing molecule or product either from a competitor or from an internal company source. As such the first examples of a new insecticide representing a new type or class of AI (First-in-Class: FIC) are important as prototypes for other AIs stimulating further spectrum, efficacy, physicochemical, and environmental safety refinements. FIC insecticides also represent a measure of innovation. Understanding the origins of these FIC compounds and the approaches used in their discovery can provide insights into successful strategies for future new classes of insecticides. This perspective will focus on an analysis of the approaches that have been used for discovery of FIC insecticides highlighting those approaches that have been the most successful and providing a reference point for current and future directions.
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Affiliation(s)
| | - Beth A Lorsbach
- Nufarm, 4020 Aerial Center Parkway Morrisville, NC 27560, USA
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6
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Application of Chiral Piperidine Scaffolds in Drug Design. PHARMACEUTICAL FRONTS 2023. [DOI: 10.1055/s-0043-1764218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
Chiral piperidine scaffolds are prevalent as the common cores of a large number of active pharmaceuticals in medical chemistry. This review outlined the diversity of chiral piperidine scaffolds in recently approved drugs, and also covers the scaffolds in leads and drug candidates. The significance of chiral piperidine scaffolds in drug design is also discussed in this article. With the introduction of chiral piperidine scaffolds into small molecules, the exploration of drug-like molecules can be benefitted from the following aspect: (1) modulating the physicochemical properties; (2) enhancing the biological activities and selectivity; (3) improving pharmacokinetic properties; and (4) reducing the cardiac hERG toxicity. Given above, chiral piperidine-based discovery of small molecules will be a promising strategy to enrich our molecules' library to fight against diseases.
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Zeng H, Zhang W, Wang Z, Gan X. Discovery of Novel Pyrazole Derivatives with Improved Crop Safety as 4-Hydroxyphenylpyruvate Dioxygenase-Targeted Herbicides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3950-3959. [PMID: 36848139 DOI: 10.1021/acs.jafc.2c07551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
As one of the essential herbicide targets, 4-hydroxyphenylpyruvate dioxygenase (HPPD) has recently been typically used to produce potent new herbicides. In continuation with the previous work, several pyrazole derivatives comprising a benzoyl scaffold were designed and synthesized, and their inhibitory effects on Arabidopsis thaliana hydroxyphenylpyruvate dioxygenase (AtHPPD) and herbicidal activities were comprehensively evaluated in this study. Compound Z9 showed top-rank inhibitory activity to AtHPPD with an half-maximal inhibitory concentration (IC50) value of 0.05 μM, which was superior to topramezone (1.33 μM) and mesotrione (1.76 μM). Compound Z21 exhibited superior preemergence inhibitory activity against Echinochloa crusgalli, with stem and root inhibition rates of 44.3 and 69.6%, respectively, compared to topramezone (16.0 and 53.0%) and mesotrione (12.8 and 41.7%). Compounds Z5, Z15, Z20, and Z21 showed excellent postemergence herbicidal activities at a dosage of 150 g ai/ha, along with distinct bleaching symptoms and higher crop safety than topramezone and mesotrione, and they all were safe for maize, cotton, and wheat with injury rates of 0 or 10%. In addition, the molecular docking analysis also revealed that these compounds formed hydrophobic π-π interactions with Phe360 and Phe403 to AtHPPD. This study suggests that pyrazole derivatives containing a benzoyl scaffold could be used as new HPPD inhibitors to develop pre- and postemergence herbicides and be applied to additional crop fields.
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Affiliation(s)
- Huanan Zeng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Wei Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhengxing Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xiuhai Gan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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8
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Blythe J, Earley FGP, Piekarska-Hack K, Firth L, Bristow J, Hirst EA, Goodchild JA, Hillesheim E, Crossthwaite AJ. The mode of action of isocycloseram: A novel isoxazoline insecticide. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 187:105217. [PMID: 36127059 DOI: 10.1016/j.pestbp.2022.105217] [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] [Received: 05/19/2022] [Revised: 08/17/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
Isocycloseram is a novel isoxazoline insecticide and acaricide with activity against lepidopteran, hemipteran, coleopteran, thysanopteran and dipteran pest species. Isocycloseram selectively targets the invertebrate Rdl GABA receptor at a site that is distinct to fiproles and organochlorines. The widely distributed cyclodiene resistance mutation, A301S, does not affect sensitivity to isocycloseram, either in vitro or in vivo, demonstrating the suitability of isocylsoseram to control pest infestations with this resistance mechanism. Detailed studies demonstrated that the binding sites relevant to the insecticidal activity of avermectins and isocycloseram are distinct. Isocycloseram was shown to compete for binding with metadiamide insecticides related to broflanilide. In addition, a G335M mutation in the third transmembrane domain of the Rdl GABA receptor, impaired the ability of both isocycloseram and metadiamides to block the GABA mediated response. As such the Insecticides Resistance Action Committee (IRAC) has classified isocycloseram in Group 30 "GABA-Gated Chloride Channel Allosteric Modulators".
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Affiliation(s)
- Judith Blythe
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Fergus G P Earley
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK.
| | - Katarzyna Piekarska-Hack
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Lucy Firth
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Julia Bristow
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Elizabeth A Hirst
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - James A Goodchild
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
| | - Elke Hillesheim
- Syngenta Crop Protection AG, Research Biology, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Andrew J Crossthwaite
- Syngenta, Bioscience, Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, UK
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9
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Chen D, Hao G, Song B. Finding the Missing Property Concepts in Pesticide-Likeness. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10090-10099. [PMID: 35971945 DOI: 10.1021/acs.jafc.2c02757] [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: 05/26/2023]
Abstract
Poor bioavailability of pesticides is one of the major bottlenecks in the development of pesticides. Applications of the concept of pesticide-likeness have been widely accepted as one of the ways to break the bottleneck. At present, the evaluation of pesticide-likeness is mainly based on absorption, distribution, metabolism, excretion, and toxicity (ADME-T) property concepts of pesticides. However, a few significant property concepts of pesticides are ignored in the research of pesticide-likeness. Herein, we summarize the current study of ADME-T and other property concepts and analyze physicochemical properties for pesticides in the last 30 years, such as Fsp3, log P, and chiral centers. On the basis of these analyses, we propose that molecular complexity and residual property concepts of pesticides should be considered in the pesticide-likeness study. We hope that this work can help pesticide researchers and students, who are less knowledgeable in the field, to assess pesticide-likeness.
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Affiliation(s)
- Dongyu Chen
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China
| | - Gefei Hao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China
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10
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Maki Y, Soejima H, Sugiyama T, Sato T, Yamaguchi J, Watahiki MK. Conjugates of 3-phenyllactic acid and tryptophan enhance root-promoting activity without adverse effects in Vigna angularis. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2022; 39:173-177. [PMID: 35937525 PMCID: PMC9300432 DOI: 10.5511/plantbiotechnology.21.1217a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 12/17/2021] [Indexed: 06/15/2023]
Abstract
3-Phenyllactic acid (PLA) is a common secondary product of Lactobacillus sp. and promotes adventitious-root formation in Azuki beans (Vigna angularis). Root promotion activity of PLA is synergistically enhanced by tryptophan (Trp). In this study, stereoisomers of PLA and Trp amide conjugates and their alkyl esters were synthesized to investigate the structure-activity relationships on root-promotion activity. The rooting activity of D-PLA-L-Trp conjugate shows more than 40 times higher than that of the mixture of D-PLA and L-Trp. Modification of PLA-Trp with ethyl ester showed the highest activity at 3,400 times of a mixture of D-PLA and L-Trp. However, L-or D-PLA-D-Trp conjugate and the isopropyl ester of PLA-Trp conjugates, both lost the root promotion activity and implicated that a requirement for steric structure for PLA related root promotion mechanism. Unlike auxin substances, which are commonly used as rooting agents that displayed high activity in low concentrations, PLA-Trp ethyl ester exhibited far less phytotoxicity at high concentration of 1 mM, despite its high rooting activity. Innovation of PLA-Trp ethyl ester may be expected for agricultural aspects with low environmental impact.
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Affiliation(s)
- Yuko Maki
- Snow Brand Seed Co. Ltd., Horonai 1066-5, Naganuma, Hokkaido 069-1464, Japan
| | - Hiroshi Soejima
- Snow Brand Seed Co. Ltd., Horonai 1066-5, Naganuma, Hokkaido 069-1464, Japan
| | - Tamizi Sugiyama
- Department of Agricultural Chemistry, Meiji University, Higashimita 1-1-1, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Kita-ku N10-W8, Sapporo, Hokkaido 060-0810, Japan
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Kita-ku N10-W8, Sapporo, Hokkaido 060-0810, Japan
| | - Masaaki K. Watahiki
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Kita-ku N10-W8, Sapporo, Hokkaido 060-0810, Japan
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11
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Sabri Bens M, Dassamiour S, Hambaba L, Akram Mela M, Sami R, M. Al-Mush AA, Benajiba N, Al Masoudi LM. In silico Investigation and BSA Denaturation Inhibitory Activity of Ethyl Acetate and N-butanol Extracts of Centaurea tougourensis Boiss. and Reut. INT J PHARMACOL 2022. [DOI: 10.3923/ijp.2022.1296.1308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Luong HNB, Kalogeridi M, Vontas J, Denecke S. Using tissue specific P450 expression in Drosophila melanogaster larvae to understand the spatial distribution of pesticide metabolism in feeding assays. INSECT MOLECULAR BIOLOGY 2022; 31:369-376. [PMID: 35118729 DOI: 10.1111/imb.12765] [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] [Received: 05/25/2021] [Revised: 01/25/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
Drug metabolizing enzymes such as cytochrome P450s have often been implicated in influencing levels of pesticide toxicology and resistance. Consequently, a variety of different P450 genes and variants have been linked to pesticide metabolism. Substantially less is known in regards to which tissues these P450s contribute to pesticide metabolism. Here, we isolate the effect of different tissues in pesticide toxicology by driving the model P450 Cyp6g1 in specific tissues of Drosophila melanogaster. Fluorescent and luminescent assays were used to compare the strength of GAL4 lines specific to the midgut (Mex-GAL4), Malpighian tubules (UO-GAL4) and the fat body (LSP2-GAL4) with the widely used HR-GAL4 line which drives GAL4 expression in all three tissues simultaneously. These data suggested that GAL4 drivers specific for the midgut and fat body were of approximately equal strength to the HR-GAL4 line, while the Malpighian tubule specific line was significantly weaker. Multiple toxicology assays using the pesticides bendiocarb, imidacloprid and malathion were then performed to assess which tissues provide the most chemoprotection. In the long-term feeding assay, transgenic expression of Cyp6g1 specifically in the midgut accounted for the majority of the resistance caused by Cyp6g1 overexpression with the HR-GAL4 driver. Real-time toxicology assays on third instar larvae were also performed and showed variable contributions of tissues to acute toxicology response depending on which pesticide was used. These data suggest a strong influence of bioassay parameters such as life stage and dosing method on outcome but suggest a prominent role for the midgut in larval toxicology.
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Affiliation(s)
- Hang Ngoc Bao Luong
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
| | - Maria Kalogeridi
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
| | - John Vontas
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
- Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Shane Denecke
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, Heraklion, Crete, Greece
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13
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Shafat Z, Hamza A, Deeba F, Parvez MK, Parveen S. Molecular insights into the Y-domain of hepatitis E virus using computational analyses. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2021. [DOI: 10.1186/s43088-021-00154-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract
Background
Hepatitis E virus (HEV) of the family Hepeviridae is a major causative agent of acute hepatitis in developing countries. The Y-domain is derived from multi-domain non-structural polyprotein encoded by open reading frame 1 (ORF1). Previous studies have demonstrated the essentiality of Y-domain sequences in HEV life cycle; however, its function remains completely unexplored. The following study was thus conceptualized to examine the detailed computational investigation for the putative Y-domain to estimate its phylogenetic assessment, physiochemical properties, structural and functional characteristics using in silico analyses.
Results
The phylogenetic assessment of Y-domain with a vast range of hosts indicated that the protein was very well conserved throughout the course of evolution. The Y-domain was found to be unstable, hydrophilic and basic in nature with high thermostability value. Structural analysis of Y-domain revealed mixed α/β structural fold of the protein having higher percentage of alpha-helices. The three-dimensional (3D) protein model generated through homology modelling revealed the presence of clefts, tunnels and pore. Gene ontology analysis predicted Y-domain protein’s involvement in several binding and catalytic activities as well as significant biological processes. Mutations in the conserved amino acids of the Y-domain suggested that it may stabilize or de-stabilize the protein structure that might affect its structure–function relationship.
Conclusions
This theoretical study will facilitate towards deciphering the role of unexplored Y-domain, thereby providing better understanding towards the pathogenesis of HEV infection.
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Gang F, Li X, Yang C, Han L, Qian H, Wei S, Wu W, Zhang J. Synthesis and Insecticidal Activity Evaluation of Virtually Screened Phenylsulfonamides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11665-11671. [PMID: 32975932 DOI: 10.1021/acs.jafc.0c02153] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The fastest and most effective way to control pests is to use pesticides. However, with the accumulation of pesticide resistance and the difficulties of rapidly producing new pesticides, it is of great significance to create new pesticides through new synthetic methods. In this study, we report a computer-aided drug design (CADD)-assisted method to obtain two lead sulfonamides by homology modeling and virtual screening. On this basis, the lead compounds were synthesized from p-chlorocresol by four steps of esterification, sulfonation, sulfonamidation, and amidation. Further, 71 derivatives were synthesized by optimizing the lead compounds, and their insecticidal activities against Mythimna separata were evaluated by the leaf-dipping method. Notably, seven sulfonamides (5a, 5g, 5h, 5m, 6b, 6g, and 6m) with excellent insecticidal activity were obtained, and the possible binding modes between receptors and active groups in sulfonamides were verified by structure-activity relationship and docking simulation, which provided theoretical support for the subsequent development of these novel candidate insecticides.
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Affiliation(s)
- Fangli Gang
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Xiaoting Li
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
- Shanxi Normal University, Linfen, Shanxi 041004, P. R. China
| | - Chaofu Yang
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Lijuan Han
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Hao Qian
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
| | - Shaopeng Wei
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, P. R. China
| | - Wenjun Wu
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, P. R. China
| | - Jiwen Zhang
- College of Chemistry & Pharmacy, Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, P. R. China
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15
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Ju C, Dong S, Zhang H, Yao S, Wang F, Cao D, Xu S, Fang H, Yu Y. Subcellular distribution governing accumulation and translocation of pesticides in wheat (Triticum aestivum L.). CHEMOSPHERE 2020; 248:126024. [PMID: 32004891 DOI: 10.1016/j.chemosphere.2020.126024] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/19/2020] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Root uptake, translocation, and subcellular distribution of six pesticides (dinotefuran, thiamethoxam, imidacloprid, imazethapyr, propiconazole, and chlorpyrifos) with Kow ranging from -0.549 to 4.7 were investigated in wheat to study transportation and accumulation of pesticides. The root bioconcentration factor (RCF) of pesticides decreased with water solubility (R2 = 0.6121) and increased with hydrophobicity (when the pH-adjusted log Kow > 2, R2 = 0.925), respectively. The translocation of neutral pesticides from roots to shoots increased positively with water solubility (R2 > 0.6484) but decreased with hydrophobicity (R2 > 0.8039). The subcellular fraction concentration factor (SFCF) increased linearly with hydrophobicity of the tested pesticides (R2 > 0.958). The log RCF was positively correlated with log SFCF in root cell walls (R2 = 0.9894) and organelles (R2 = 0.9786). Transportation of the pesticides from roots to stems and stems to leaves was adversely affected by the log SFCF of cell walls and organelles of roots (R2 > 0.7997) and stems (R2 > 0.6666), respectively. Hydrophobicity-dependent SFCF is a factor governing accumulation of pesticides in roots after uptake and their subsequent upward translocation.
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Affiliation(s)
- Chao Ju
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Suxia Dong
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Hongchao Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Shijie Yao
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Feiyan Wang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Duantao Cao
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Shiji Xu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China.
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16
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Alzaydi KM, Saleh TS. 2-Aryl hydrazonopropanal pharmacophores as potent cytotoxic agents against human hepatocellular carcinoma cell line. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02473-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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17
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Swale DR. Perspectives on new strategies for the identification and development of insecticide targets. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 161:23-32. [PMID: 31685193 DOI: 10.1016/j.pestbp.2019.07.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 06/10/2023]
Abstract
The discovery and development of new active ingredients to control arthropod populations and circumvent the inevitable evolution of insecticide resistance has been of consistent interest to the field of insecticide science. This interest has resulted in a slow, but steady increase in the diversity of chemical scaffolds and biochemical target sites within the insecticide arsenal over the past 70 years with growth from three biochemical target sites in the 1950s to 22 distinct biochemical targets in 2018. Despite this growth, the number of biochemical target sites for insecticides remains relatively limited when compared to human pharmaceuticals, which has approximately 700 distinct biochemical targets that are targeted by FDA approved drugs. Potential reasons for this large discrepancy between two closely related fields and putative mechanisms to enhance the identification of tractable biochemical targets for insecticides are discussed. Next, this perspective discusses the movement of insecticide science into the "genomic era" and for comparative purposes, I provide a retrospective analysis of the impact the release of the human genome had to human pharmaceutical development. Based on this analysis and because the fields of insecticide science and human pharmaceuticals mirror each other, researchers in the field of insecticide science would do well to heed the lessons learned by the human pharmaceutical industry and to carefully consider the challenges that arise from genomic approaches for chemical development. Lastly, I pose the question if the field of insecticide science would benefit from adapting an industry-academia model through the generation of industry-sponsored centers of excellence. The goal of this article is not to definitively describe strategies to enhance insecticide development, but rather present different thoughts on agrochemical development that will foster discussions among academic, government, and industry scientists to address current and future problems in the field of insecticide science.
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Affiliation(s)
- Daniel R Swale
- Department of Entomology, Louisiana State University AgCenter, Baton Rouge, LA 70803, United States of America.
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18
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Lim HJ, Lee WH, Park SJ. Synthesis, Physicochemical Properties, and Biological Activities of 4-( S-Methyl- N-(2,2,2-Trifluoroacetyl)Sulfilimidoyl) Anthranilic Diamide. Molecules 2019; 24:molecules24193451. [PMID: 31547559 PMCID: PMC6804157 DOI: 10.3390/molecules24193451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/03/2019] [Accepted: 09/19/2019] [Indexed: 11/21/2022] Open
Abstract
Novel anthranilic diamides with sulfilimidoyl and sulfoximidoyl functionalities were successfully prepared. Among newly-prepared organosulfur compounds, 3-bromo-1-(3-chloropyridin-2-yl)-N-(2-methyl-6-(methylcarbamoyl)-4-(methylthio)phenyl)-1H-pyrazole-5-carboxamide and (S,E)-3-bromo-1-(3-chloropyridin-2-yl)-N-(2-methyl-4-(S-methyl-N-(2,2,2-trifluoroacetyl)sulfinimidoyl)-6-(methylcarbamoyl)phenyl)-1H-pyrazole-5-carboxamide showed good levels of efficacy and a strong correlation between insecticidal activities and physical properties, respectively. In particular, available data indicated that the N-trifluoroacetyl sulfilimine moiety could be an appealing structural scaffold for the discovery of a new crop-protecting agent.
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Affiliation(s)
- Hwan Jung Lim
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea.
| | - Won Hyung Lee
- Central Research Institute, Kyung Nong Co. Ltd., 34-14 Summeori-gil, Kyongju 38175, Kyongsangbuk-do, Korea.
| | - Seong Jun Park
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea.
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19
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Tu L, Li Z, Feng T, Yu S, Huang R, Li J, Wang W, Zheng Y, Liu J. Access to Imidazolidines via 1,3-Dipolar Cycloadditions of 1,3,5-Triazinanes with Aziridines. J Org Chem 2019; 84:11161-11169. [DOI: 10.1021/acs.joc.9b01959] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Zhenghui Li
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Tao Feng
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Shuyan Yu
- College of Pharmacy, Inner Mongolia Medical University, Hohhot 010010, China
| | - Rong Huang
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jing Li
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Wenxuan Wang
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
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20
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Khan SA, Asiri AM, Basisi HM, Asad M, Zayed ME, Sharma K, Wani MY. Synthesis and evaluation of Quinoline-3-carbonitrile derivatives as potential antibacterial agents. Bioorg Chem 2019; 88:102968. [DOI: 10.1016/j.bioorg.2019.102968] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/26/2019] [Accepted: 04/29/2019] [Indexed: 12/24/2022]
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21
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Malik MA, Raza MK, Dar OA, Amadudin, Abid M, Wani MY, Al-Bogami AS, Hashmi AA. Probing the antibacterial and anticancer potential of tryptamine based mixed ligand Schiff base Ruthenium(III) complexes. Bioorg Chem 2019; 87:773-782. [PMID: 30974300 DOI: 10.1016/j.bioorg.2019.03.080] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/19/2019] [Accepted: 03/30/2019] [Indexed: 12/26/2022]
Abstract
Development of new chemotherapeutic agents to treat microbial infections and recurrent cancers is of pivotal importance. Metal based drugs particularly ruthenium complexes have the uniqueness and desired properties that make them suitable candidates for the search of potential chemotherapeutic agents. In this study, two mixed ligand Ru(III) complexes [Ru(Cl)2(SB)(Phen] (RC-1) and [Ru(Cl)2(SB)(Bipy)] (RC-2) were synthesised and characterized by elemental analysis, IR, UV-Vis, 1H, 13C NMR spectroscopic techniques and their molecular structure was confirmed by X-ray crystallography. Antibacterial activity evaluation against two Gram-positive (S. pneumonia and E. faecalis) and four Gram-negative strains (P. aurogenosa, K. pneumoniae, S. enterica, and E. coli) revealed their moderate antibacterial activity with MIC value of ≥250 μg/mL. Anticancer activity evaluation against a non-small lung cancer cell line (H1299) revealed the tremendous anticancer activity of these complexes which was further validated by DNA binding and docking results. DNA binding profile of the complexes studied by UV-Visible and fluorescence spectroscopy showed an intercalative binding mode with CT-DNA and an intrinsic binding constant in the range of 3.481-1.015× 105 M-1. Both the complexes were also found to exert weak toxicity to human erythrocytes by haemolytic assay compared to cisplatin. Potential of these complexes as anticancer agents will be further delineated by in vivo studies.
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Affiliation(s)
- Manzoor Ahmad Malik
- Bioinorganic Lab., Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Md Kausar Raza
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ovas Ahmad Dar
- Bioinorganic Lab., Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Amadudin
- Medicinal Chemistry Lab., Department of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Mohammad Abid
- Medicinal Chemistry Lab., Department of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Mohmmad Younus Wani
- Chemistry Department, Faculty of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia.
| | - Abdullah Saad Al-Bogami
- Chemistry Department, Faculty of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Athar Adil Hashmi
- Bioinorganic Lab., Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India.
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22
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Wang MY, Wang F, Hao GF, Yang GF. FungiPAD: A Free Web Tool for Compound Property Evaluation and Fungicide-Likeness Analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:1823-1830. [PMID: 30677302 DOI: 10.1021/acs.jafc.8b06596] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The increasing prevalence of fungal diseases, continual development of resistance, and stringent environmental regulations have revealed an urgent need to develop more selective, safer, resistance-breaking, and cost-effective fungicides. However, most new fungicidal lead compounds fail in their late stages of development as a result of poor solubility or permeability, meaning that they have suboptimal physicochemical properties. Hence, the exploration of advanced technologies for compound "fungicide-likeness" assessment might overcome these obstacles and bring more chemical entities to market. FungiPAD ( http://chemyang.ccnu.edu.cn/ccb/database/FungiPAD/ ) is a free platform employed to predict physicochemical properties, bioavailability, and fungicide-likeness swiftly and powerfully using comprehensive approaches, such as physicochemical radars and qualitative and quantitative analyses. This platform contains data for over 16 000 physicochemical descriptors and the results of 2200 qualitative and 1100 quantitative analyses of marketed fungicides and provides comprehensive fungicide-likeness analysis for different compounds. The user-friendly interface facilitates interpretation and manipulation by non-computational scientists in support of fungicide discovery.
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Affiliation(s)
| | | | - Ge-Fei Hao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Research and Development Center for Fine Chemicals , Guizhou University , Guiyang , Guizhou 550025 , People's Republic of China
| | - Guang-Fu Yang
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , People's Republic of China
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23
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Denecke S, Swevers L, Douris V, Vontas J. How do oral insecticidal compounds cross the insect midgut epithelium? INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2018; 103:22-35. [PMID: 30366055 DOI: 10.1016/j.ibmb.2018.10.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/09/2018] [Accepted: 10/21/2018] [Indexed: 06/08/2023]
Abstract
The use of oral insecticidal molecules (small molecules, peptides, dsRNA) via spray or plant mediated applications represents an efficient way to manage damaging insect species. With the exception of Bt toxins that target the midgut epithelium itself, most of these compounds have targets that lie within the hemocoel (body) of the insect. Because of this, one of the greatest factors in determining the effectiveness of an oral insecticidal compound is its ability to traverse the gut epithelium and enter the hemolymph. However, for many types of insecticidal compounds, neither the pathway taken across the gut nor the specific genes which influence uptake are fully characterized. Here, we review how different types of insecticidal compounds enter or cross the midgut epithelium through passive (diffusion) or active (transporter based, endocytosis) routes. A deeper understanding of how insecticidal molecules cross the gut will help to best utilize current insecticides and also provide for more rational design of future ones.
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Affiliation(s)
- Shane Denecke
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 73100, Heraklion, Greece.
| | - Luc Swevers
- Insect Molecular Genetics and Biotechnology Research Group, Institute of Biosciences & Applications, NCSR "Demokritos", Athens, Greece
| | - Vassilis Douris
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 73100, Heraklion, Greece
| | - John Vontas
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 73100, Heraklion, Greece; Department of Crop Science, Pesticide Science Lab, Agricultural University of Athens, Athens, Greece
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24
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Mukhopadhyay S, Pan SC. Organocatalytic asymmetric synthesis of 2,4-disubstituted imidazolidines via domino addition-aza-Michael reaction. Chem Commun (Camb) 2018; 54:964-967. [PMID: 29319067 DOI: 10.1039/c7cc08338f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The first highly diastereo- and enantioselective synthesis of 2,4-disubstituted imidazolidines has been developed via a formal [3+2] cyclization reaction. Bidentate aminomethyl enones and N-tosyl imines were used as the reaction partners in the reaction. Bifunctional squaramide catalysts were found to be efficient for this reaction and few transformations of the products have been demonstrated.
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25
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Patel M, Chilton ML, Sartini A, Gibson L, Barber C, Covey-Crump L, Przybylak KR, Cronin MTD, Madden JC. Assessment and Reproducibility of Quantitative Structure–Activity Relationship Models by the Nonexpert. J Chem Inf Model 2018; 58:673-682. [DOI: 10.1021/acs.jcim.7b00523] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mukesh Patel
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Martyn L. Chilton
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Andrea Sartini
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Laura Gibson
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Chris Barber
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Liz Covey-Crump
- Lhasa Limited, Granary Wharf House, 2 Canal Wharf, Leeds LS11 5PS, England
| | - Katarzyna R. Przybylak
- School of Pharmacy and Chemistry, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England
| | - Mark T. D. Cronin
- School of Pharmacy and Chemistry, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England
| | - Judith C. Madden
- School of Pharmacy and Chemistry, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, England
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26
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Xie Y, Peng W, Ding F, Liu SJ, Ma HJ, Liu CL. Quantitative structure-activity relationship (QSAR) directed the discovery of 3-(pyridin-2-yl)benzenesulfonamide derivatives as novel herbicidal agents. PEST MANAGEMENT SCIENCE 2018; 74:189-199. [PMID: 28762622 DOI: 10.1002/ps.4693] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/12/2017] [Accepted: 07/25/2017] [Indexed: 05/17/2023]
Abstract
BACKGROUND Agrochemicals have been crucial to the production of food, and the need for the development of novel agrochemicals continues unceasing owing to the loss of existing produces via the growth of resistance and the desire for products with more propitious environmental and toxicological patterns. RESULTS The results of both CoMFA and CoMSIA models indicated that biological activity can effectively be improved through the structural optimisation and molecular design of these synthetic compounds from the aspects of steric, electrostatic, hydrophobic, hydrogen bond donor and acceptor fields. Data of postemergence herbicidal activity in the greenhouse explained that most new 3-(pyridin-2-yl)benzenesulfonamide derivatives (4c-4 t) could control highly effectively against barnyardgrass, foxtail, vetleaf, and youth and old age (herbicidal activity ≥90%); for example, compounds 4q-4 t exhibit excellent biological activity equivalent/superior to commercial saflufenacil/sulcotrione at the low concentration of 37.5 g a.i./ha, and in particular, the herbicidal activity of compound 4 t for four experimental plant species is found to be notably greater than saflufenacil (3.75 g a.i./ha). Meanwhile, compound 4 t also has good crop selectivity for weed control in maize. CONCLUSION The novel compounds such as 4 t have remarkable biological activity after the structural optimisation utilising the constructed 3D-QSAR models, i.e. such QSAR models have great accuracy. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Yong Xie
- Laboratory for Computational Biochemistry & Molecular Design, Department of Phytomedicine, Qingdao Agricultural University, Qingdao, China
- State Key Laboratory of the Discovery and Development of Novel Pesticide, Shenyang Sinochem Agrochemicals R&D Co. Ltd., Shenyang, China
| | - Wei Peng
- Laboratory for Computational Biochemistry & Molecular Design, Department of Phytomedicine, Qingdao Agricultural University, Qingdao, China
- Key Laboratory of Integrated Crop Pest Management of Shandong Province, Qingdao, China
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
- Department of Chemistry, China Agricultural University, Beijing, China
| | - Fei Ding
- Laboratory for Computational Biochemistry & Molecular Design, Department of Phytomedicine, Qingdao Agricultural University, Qingdao, China
- Key Laboratory of Integrated Crop Pest Management of Shandong Province, Qingdao, China
| | - Shu-Jie Liu
- State Key Laboratory of the Discovery and Development of Novel Pesticide, Shenyang Sinochem Agrochemicals R&D Co. Ltd., Shenyang, China
| | - Hong-Juan Ma
- State Key Laboratory of the Discovery and Development of Novel Pesticide, Shenyang Sinochem Agrochemicals R&D Co. Ltd., Shenyang, China
| | - Chang-Ling Liu
- State Key Laboratory of the Discovery and Development of Novel Pesticide, Shenyang Sinochem Agrochemicals R&D Co. Ltd., Shenyang, China
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27
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Zhang S, Li D, Song Z, Zang C, Zhang L, Song X, Li S. "Carbon Assimilation" Inspired Design and Divergent Synthesis of Drimane Meroterpenoid Mimics as Novel Fungicidal Leads. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9013-9021. [PMID: 28949528 DOI: 10.1021/acs.jafc.7b03126] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
With structural diversity and versatile biological properties, drimane meroterpenoids have drawn remarkable attention in drug development. The stagnant progress made in the structure optimization and SAR study of this kind of natural product for agrochemicals was mainly a result of inefficient construction. Compared with the reported challenging coupling reaction ("1 + 1" tactic), "carbon assimilation" was conceived and used for the rapid construction of drimanyl meroterpenoid mimics, in which the newly formed covalent bond was directly from the old one of the drimanyl subunit ("2 + 0" tactic), which features atom economy, step economy, and facile preparation. The accompanying introduction of versatile heterocycles and application of easily available feedstocks are beneficial for novel green agrochemical discovery, in view of economic efficiency and improvement of physicochemical properities. Heterocyclic mimics 3a and 3c are presented as potent fungicidal leads with novel skeletons against Botrytis cinerea, >25-fold and >40-fold more promising than the commercial fungicide carbendazim, respectively. Our design was also rationalized by the 6-step synthesis and antifungal assay of the original model of natural meroterpenoids. This tactic can also be fostered or transferred directly to the design of novel natural product mimics for medicinal chemistry or other related biological exploration.
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Affiliation(s)
- Shasha Zhang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Dangdang Li
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Zehua Song
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Chuanli Zang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Lu Zhang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Xiushi Song
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Shengkun Li
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University , Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University , Guiyang 550025, People's Republic of China
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28
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Gholivand K, Ebrahimi Valmoozi AA, Rahimzadeh Dashtaki M, Mohamadpanah F, Dusek M, Eigner V, Pooyan M, Bonsaii M, Sharifi M, Ghadamyari M. Synthesis, Crystal Structure, Fluorescence Assay, Molecular Docking and QSAR/QSPR Studies of Temephos Derivatives as Human and Insect Cholinesterase Inhibitors. ChemistrySelect 2017. [DOI: 10.1002/slct.201701157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | | | - Michal Dusek
- Institute of Physics of the ASCR v.v.i.; Na Slovance 2 182 21 Praha 8 Czech Republic
| | - Vaclav Eigner
- Institute of Physics of the ASCR v.v.i.; Na Slovance 2 182 21 Praha 8 Czech Republic
| | - Mahsa Pooyan
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
| | - Mahyar Bonsaii
- Department of Chemistry; Islamic Azad University, North Tehran Branch; Tehran Iran
| | - Mahboobeh Sharifi
- Department of Plant Protection; Faculty of Agricultural Science; University of Guilan; Rasht Iran
| | - Mohammad Ghadamyari
- Department of Plant Protection; Faculty of Agricultural Science; University of Guilan; Rasht Iran
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Nain-Perez A, Barbosa LCA, Maltha CRÁ, Forlani G. Natural Abenquines and Their Synthetic Analogues Exert Algicidal Activity against Bloom-Forming Cyanobacteria. JOURNAL OF NATURAL PRODUCTS 2017; 80:813-818. [PMID: 28319393 DOI: 10.1021/acs.jnatprod.6b00629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Abenquines are natural quinones, produced by some Streptomycetes, showing the ability to inhibit cyanobacterial growth in the 1 to 100 μM range. To further elucidate their biological significance, the synthesis of several analogues (4f-h, 5a-h) allowed us to identify some steric and electronic requirements for bioactivity. Replacing the acetyl by a benzoyl group in the quinone core and also changing the amino acid moiety with ethylpyrimidinyl or ethylpyrrolidinyl groups resulted in analogues 25-fold more potent than the natural abenquines. The two most effective analogues inhibited the proliferation of five cyanobacterial strains tested, with IC50 values ranging from 0.3 to 3 μM. These compounds may be useful leads for the development of an effective strategy for the control of cyanobacterial blooms.
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Affiliation(s)
- Amalyn Nain-Perez
- Department of Chemistry, Universidade Federal de Minas Gerais , Avenida Pres. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Luiz Cláudio Almeida Barbosa
- Department of Chemistry, Universidade Federal de Minas Gerais , Avenida Pres. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil
- Department of Chemistry, Federal University of Viçosa , 36570-000, Viçosa, MG, Brazil
| | | | - Giuseppe Forlani
- Department of Life Science and Biotechnology, University of Ferrara , Via L. Borsari 46, I-44121 Ferrara, Italy
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Salgado VL, David MD. Chance and design in proinsecticide discovery. PEST MANAGEMENT SCIENCE 2017; 73:723-730. [PMID: 27976502 DOI: 10.1002/ps.4502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/07/2016] [Accepted: 12/07/2016] [Indexed: 06/06/2023]
Abstract
Many insecticides are inactive on their target sites in the form that is sold and applied, needing first to be bioactivated. This proinsecticide strategy has often been achieved by design, through systematic derivatization of intrinsically active molecules with protecting groups that mask their toxic effects until their selective removal in target insects by metabolic enzymes generates the toxiphore. Proinsecticides can be designed to gain selectivity between target and non-target organisms, or to improve bioavailability by enhancing plant or insect uptake. In most cases, however, chance trumps design in proinsecticide discovery: most first-in-class products that we now know to be proinsecticides were only discovered a posteriori to be such, often after having been on the market for years. Knowing the active form of an insecticide is essential to mode of action identification, and early mode of action studies on novel chemotypes should take into account the possibility that the compounds might be proinsecticides. This paper reviews examples of proinsecticides in the marketplace, strategies for making proinsecticides and techniques for unmasking proinsecticides in mode of action studies. Our analysis of global agrochemical sales data shows that 34% of the dollar value of crop insecticides used in 2015 were proinsecticides. © 2016 Society of Chemical Industry.
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Affiliation(s)
| | - Michael D David
- BASF Global Insecticide Research, Research Triangle Park, NC, USA
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31
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Sengoden M, Bhowmick A, Punniyamurthy T. Stereospecific Copper-Catalyzed Domino Ring Opening and sp3 C–H Functionalization of Activated Aziridines with N-Alkylanilines. Org Lett 2016; 19:158-161. [DOI: 10.1021/acs.orglett.6b03458] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mani Sengoden
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Abhisikta Bhowmick
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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32
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Satheesh V, Sengoden M, Punniyamurthy T. “On Water” C(sp3)–H Functionalization/C–O/C–N Bonds Formations: Synthesis of Functionalized Oxazolidines and Imidazolidines. J Org Chem 2016; 81:9792-9801. [DOI: 10.1021/acs.joc.6b01850] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vanaparthi Satheesh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Mani Sengoden
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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33
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A New Class of Glucosyl Thioureas: Synthesis and Larvicidal Activities. Molecules 2016; 21:molecules21070925. [PMID: 27438819 PMCID: PMC6274248 DOI: 10.3390/molecules21070925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/04/2016] [Accepted: 07/12/2016] [Indexed: 11/17/2022] Open
Abstract
A novel series of glucosyl thioureas were synthesized in good overall yields (up to 37% over four steps) from d-glucose and primary amines, and their larvicidal activities toward Mythimna separata Walker were also investigated. This new class of glucosyl thioureas demonstrated low to moderate growth inhibition activity of Mythiman separata Walker, with a growth inhibitory rate of up to 47.5% at a concentration of 100.0 mg/L in acetone.
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34
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SHIRAI O, KITAZUMI Y, KANO K. Relation between Membrane Transport and Transport within Body Fluid on the Expression of Pharmacological Activities of Drugs — Mass Transfer in the Quantitative Structure-activity Relationship (QSAR) —. BUNSEKI KAGAKU 2016. [DOI: 10.2116/bunsekikagaku.65.249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Osamu SHIRAI
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
| | - Yuki KITAZUMI
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
| | - Kenji KANO
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University
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Rao H, Huangfu C, Wang Y, Wang X, Tang T, Zeng X, Li Z, Chen Y. Physicochemical Profiles of the Marketed Agrochemicals and Clues for Agrochemical Lead Discovery and Screening Library Development. Mol Inform 2015; 34:331-8. [DOI: 10.1002/minf.201400143] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 02/21/2015] [Indexed: 12/31/2022]
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Raphemot R, Rouhier MF, Swale DR, Days E, Weaver CD, Lovell KM, Konkel LC, Engers DW, Bollinger SF, Hopkins C, Piermarini PM, Denton JS. Discovery and characterization of a potent and selective inhibitor of Aedes aegypti inward rectifier potassium channels. PLoS One 2014; 9:e110772. [PMID: 25375326 PMCID: PMC4222822 DOI: 10.1371/journal.pone.0110772] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 09/16/2014] [Indexed: 12/12/2022] Open
Abstract
Vector-borne diseases such as dengue fever and malaria, which are transmitted by infected female mosquitoes, affect nearly half of the world's population. The emergence of insecticide-resistant mosquito populations is reducing the effectiveness of conventional insecticides and threatening current vector control strategies, which has created an urgent need to identify new molecular targets against which novel classes of insecticides can be developed. We previously demonstrated that small molecule inhibitors of mammalian Kir channels represent promising chemicals for new mosquitocide development. In this study, high-throughput screening of approximately 30,000 chemically diverse small-molecules was employed to discover potent and selective inhibitors of Aedes aegypti Kir1 (AeKir1) channels heterologously expressed in HEK293 cells. Of 283 confirmed screening ‘hits’, the small-molecule inhibitor VU625 was selected for lead optimization and in vivo studies based on its potency and selectivity toward AeKir1, and tractability for medicinal chemistry. In patch clamp electrophysiology experiments of HEK293 cells, VU625 inhibits AeKir1 with an IC50 value of 96.8 nM, making VU625 the most potent inhibitor of AeKir1 described to date. Furthermore, electrophysiology experiments in Xenopus oocytes revealed that VU625 is a weak inhibitor of AeKir2B. Surprisingly, injection of VU625 failed to elicit significant effects on mosquito behavior, urine excretion, or survival. However, when co-injected with probenecid, VU625 inhibited the excretory capacity of mosquitoes and was toxic, suggesting that the compound is a substrate of organic anion and/or ATP-binding cassette (ABC) transporters. The dose-toxicity relationship of VU625 (when co-injected with probenecid) is biphasic, which is consistent with the molecule inhibiting both AeKir1 and AeKir2B with different potencies. This study demonstrates proof-of-concept that potent and highly selective inhibitors of mosquito Kir channels can be developed using conventional drug discovery approaches. Furthermore, it reinforces the notion that the physical and chemical properties that determine a compound's bioavailability in vivo will be critical in determining the efficacy of Kir channel inhibitors as insecticides.
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Affiliation(s)
- Rene Raphemot
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Matthew F. Rouhier
- Department of Entomology, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH, United States of America
| | - Daniel R. Swale
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States of America
| | - Emily Days
- Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - C. David Weaver
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Kimberly M. Lovell
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Department of Chemistry, Vanderbilt University School of Medicine, Nashville TN, United States of America
| | - Leah C. Konkel
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Department of Chemistry, Vanderbilt University School of Medicine, Nashville TN, United States of America
| | - Darren W. Engers
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Department of Chemistry, Vanderbilt University School of Medicine, Nashville TN, United States of America
| | - Sean F. Bollinger
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Department of Chemistry, Vanderbilt University School of Medicine, Nashville TN, United States of America
| | - Corey Hopkins
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Institute for Global Health, Vanderbilt University, Nashville, TN, United States of America
- Department of Chemistry, Vanderbilt University School of Medicine, Nashville TN, United States of America
| | - Peter M. Piermarini
- Department of Entomology, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, OH, United States of America
- * E-mail: (PMP); (JSD)
| | - Jerod S. Denton
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States of America
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
- Institute for Global Health, Vanderbilt University, Nashville, TN, United States of America
- * E-mail: (PMP); (JSD)
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Avram S, Funar-Timofei S, Borota A, Chennamaneni SR, Manchala AK, Muresan S. Quantitative estimation of pesticide-likeness for agrochemical discovery. J Cheminform 2014; 6:42. [PMID: 25264458 PMCID: PMC4173135 DOI: 10.1186/s13321-014-0042-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 09/01/2014] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND The design of chemical libraries, an early step in agrochemical discovery programs, is frequently addressed by means of qualitative physicochemical and/or topological rule-based methods. The aim of this study is to develop quantitative estimates of herbicide- (QEH), insecticide- (QEI), fungicide- (QEF), and, finally, pesticide-likeness (QEP). In the assessment of these definitions, we relied on the concept of desirability functions. RESULTS We found a simple function, shared by the three classes of pesticides, parameterized particularly, for six, easy to compute, independent and interpretable, molecular properties: molecular weight, logP, number of hydrogen bond acceptors, number of hydrogen bond donors, number of rotatable bounds and number of aromatic rings. Subsequently, we describe the scoring of each pesticide class by the corresponding quantitative estimate. In a comparative study, we assessed the performance of the scoring functions using extensive datasets of patented pesticides. CONCLUSIONS The hereby-established quantitative assessment has the ability to rank compounds whether they fail well-established pesticide-likeness rules or not, and offer an efficient way to prioritize (class-specific) pesticides. These findings are valuable for the efficient estimation of pesticide-likeness of vast chemical libraries in the field of agrochemical discovery. Graphical AbstractQuantitative models for pesticide-likeness were derived using the concept of desirability functions parameterized for six, easy to compute, independent and interpretable, molecular properties: molecular weight, logP, number of hydrogen bond acceptors, number of hydrogen bond donors, number of rotatable bounds and number of aromatic rings.
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Affiliation(s)
- Sorin Avram
- Department of Computational Chemistry, Institute of Chemistry of Romanian Academy Timisoara, 24 Mihai Viteazul Avenue, 300223 Timisoara, Romania
| | - Simona Funar-Timofei
- Department of Computational Chemistry, Institute of Chemistry of Romanian Academy Timisoara, 24 Mihai Viteazul Avenue, 300223 Timisoara, Romania
| | - Ana Borota
- Department of Computational Chemistry, Institute of Chemistry of Romanian Academy Timisoara, 24 Mihai Viteazul Avenue, 300223 Timisoara, Romania
| | - Sridhar Rao Chennamaneni
- GVK Biosciences Pvt. Ltd., S1, Phase-1, Technocrats Industrial Estate, Balanagar Hyderabad, 500 037 India
| | - Anil Kumar Manchala
- GVK Biosciences Pvt. Ltd., S1, Phase-1, Technocrats Industrial Estate, Balanagar Hyderabad, 500 037 India
| | - Sorel Muresan
- Food Control Department, Banat's University of Agricultural Sciences and Veterinary Medicine, Calea Aradului 119, 300645 Timisoara, Romania
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Zakharov A, Peach ML, Sitzmann M, Nicklaus MC. A new approach to radial basis function approximation and its application to QSAR. J Chem Inf Model 2014; 54:713-9. [PMID: 24451033 PMCID: PMC3985791 DOI: 10.1021/ci400704f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Indexed: 01/19/2023]
Abstract
We describe a novel approach to RBF approximation, which combines two new elements: (1) linear radial basis functions and (2) weighting the model by each descriptor's contribution. Linear radial basis functions allow one to achieve more accurate predictions for diverse data sets. Taking into account the contribution of each descriptor produces more accurate similarity values used for model development. The method was validated on 14 public data sets comprising nine physicochemical properties and five toxicity endpoints. We also compared the new method with five different QSAR methods implemented in the EPA T.E.S.T. program. Our approach, implemented in the program GUSAR, showed a reasonable accuracy of prediction and high coverage for all external test sets, providing more accurate prediction results than the comparison methods and even the consensus of these methods. Using our new method, we have created models for physicochemical and toxicity endpoints, which we have made freely available in the form of an online service at http://cactus.nci.nih.gov/chemical/apps/cap.
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Affiliation(s)
- Alexey
V. Zakharov
- CADD
Group, Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes
of Health, DHHS, NCI-Frederick, , 376 Boyles St., Frederick, Maryland 21702, United
States
| | - Megan L. Peach
- Basic
Science Program, Leidos Biomedical, Inc., Computer-Aided Drug Design Group, Chemical Biology Laboratory, Frederick
National Laboratory for Cancer Research, 376 Boyles St., Frederick, Maryland 21702, United States
| | - Markus Sitzmann
- CADD
Group, Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes
of Health, DHHS, NCI-Frederick, , 376 Boyles St., Frederick, Maryland 21702, United
States
| | - Marc C. Nicklaus
- CADD
Group, Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes
of Health, DHHS, NCI-Frederick, , 376 Boyles St., Frederick, Maryland 21702, United
States
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Jeschke P, Nauen R, Beck ME. Nicotinic acetylcholine receptor agonists: a milestone for modern crop protection. Angew Chem Int Ed Engl 2013; 52:9464-85. [PMID: 23934864 DOI: 10.1002/anie.201302550] [Citation(s) in RCA: 174] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Indexed: 11/08/2022]
Abstract
The destruction of crops by invertebrate pests is a major threat against a background of a continuously rising demand in food supply for a growing world population. Therefore, efficient crop protection measures in a vast range of agricultural settings are of utmost importance to guarantee sustainable yields. The discovery of synthetic agonists selectively addressing the nicotinic acetylcholine receptors (nAChRs), located in the central nervous system of insects, for use as insecticides was a major milestone in applied crop protection research. These compounds, as a result of their high target specificity and versatility in application methods, opened a new innovative era in the control of some of the world's most devastating insect pests. These insecticides also contributed massively to extending our knowledge of the biochemistry of insect nicotinic acetylcholine receptors. The global economic success of synthetic nAChR agonists as insecticides renders the nicotinic acetylcholine receptor still one of the most attractive target sites for exploration in insecticide discovery.
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Affiliation(s)
- Peter Jeschke
- Bayer CropScience AG, BCS AG R&D-SMR-PC-PCC C2, Alfred-Nobel-Strasse 50, Building 6510, 40789 Monheim am Rhein, Germany.
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Jeschke P, Nauen R, Beck ME. Nicotinische Acetylcholinrezeptor-Agonisten: ein Meilenstein für den modernen Pflanzenschutz. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302550] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Wang ZW, Huang J, Chen JY, Li FL. Time-dependent movement and distribution of chlorothalonil and chlorpyrifos in tomatoes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 93:107-111. [PMID: 23639722 DOI: 10.1016/j.ecoenv.2013.03.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 03/16/2013] [Accepted: 03/29/2013] [Indexed: 06/02/2023]
Abstract
Determining the distribution of pesticides in fruits is essential to eliminate pesticide residues during food processing. In this study, the dynamic distribution of two pesticides, chlorothalonil (CHT) and chlorpyrifos (CHP), were determined in different tomato parts following immersion in pesticide solutions. The concentrations of CHT and CHP in tomato followed an order of cuticle>plasma>pulp. However, the plasma initially accumulated the highest pesticide concentration. And the ratio of CHT concentration to that of CHP in plasma was about 2.1:1, similar to the ratio in solution, which suggested carpopodium as the entry site for the pesticides tested. The ratio in the cuticle was 0.02:1-0.06:1. This was consistent with the ratio of Kow for the two pesticides, manifesting the direct pesticide transfer from solution to cuticle. Following pesticide injection into tomato, the degradation of CHT over 96h was described by a first-order decay equation, Ctomato(t)CHT=C0×e(-0.0239t). The CHP concentration in tomato remained nearly constant with little degradation detected. Deducting the amount of degradation and migration, volatilization appeared to contribute the most amount of migration of CHT and CHP in tomato.
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Affiliation(s)
- Zhi-Wei Wang
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
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Synthesis of imidacloprid derivatives with a chiral alkylated imidazolidine ring and evaluation of their insecticidal activity and affinity to the nicotinic acetylcholine receptor. Bioorg Med Chem 2012; 20:6305-12. [DOI: 10.1016/j.bmc.2012.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 09/02/2012] [Accepted: 09/05/2012] [Indexed: 11/24/2022]
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Berhanu WM, Pillai GG, Oliferenko AA, Katritzky AR. Quantitative Structure-Activity/Property Relationships: The Ubiquitous Links between Cause and Effect. Chempluschem 2012. [DOI: 10.1002/cplu.201200038] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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44
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Structural determinants of imidacloprid-based nicotinic acetylcholine receptor inhibitors identified using 3D-QSAR, docking and molecular dynamics. J Mol Model 2011; 18:2279-89. [DOI: 10.1007/s00894-011-1293-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Accepted: 10/24/2011] [Indexed: 10/15/2022]
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