1
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Peretz E, Musa S. Design, Synthesis, and Characterization of Novel Cannabidiol-Based Derivatives with Potent Antioxidant Activities. Int J Mol Sci 2024; 25:9579. [PMID: 39273525 PMCID: PMC11395037 DOI: 10.3390/ijms25179579] [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: 08/02/2024] [Revised: 08/28/2024] [Accepted: 09/03/2024] [Indexed: 09/15/2024] Open
Abstract
In recent years, extensive research has focused on cannabidiol (CBD), a well-studied non-psychoactive component of the plant-derived cannabinoids. CBD has shown significant therapeutic potential for treating various diseases and disorders, including antioxidants and anti-inflammatory effects. Due to the promising therapeutic effect of CBD in a wide variety of diseases, synthetic derivatization of this compound has attracted the attention of drug discovery in both industry and academia. In the current research, we focused on the derivatization of CBD by introducing Schiff base moieties, particularly (thio)-semicarbazide and aminoguanidine motifs, at the 3-position of the olivetolic ring. We have designed, synthesized, and characterized new derivatives based on CBD's framework, specifically aminoguanylhydrazone- and (thio)-semicarbazones-CBD-aldehyde compounds. Their antioxidant potential was assessed using FRAP and DPPH assays, alongside an evaluation of their effect on LDL oxidation induced by Cu2+ and AAPH. Our findings suggest that incorporating the thiosemicarbazide motif into the CBD framework produces a potent antioxidant, warranting further investigation.
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Affiliation(s)
- Eliav Peretz
- Department of Biotechnology, Tel-Hai Academic College, Kiryat Shmona 11016, Israel
- Natural Compounds and Organic Synthesis Laboratory, Migal-Galilee Research Institute, Kiryat Shmona 11016, Israel
| | - Sanaa Musa
- Department of Biotechnology, Tel-Hai Academic College, Kiryat Shmona 11016, Israel
- Natural Compounds and Organic Synthesis Laboratory, Migal-Galilee Research Institute, Kiryat Shmona 11016, Israel
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2
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Spitzer S, Wloka J, Pietruszka J, Kayser O. Generation of Cannabigerolic Acid Derivatives and Their Precursors by Using the Promiscuity of the Aromatic Prenyltransferase NphB. Chembiochem 2023; 24:e202300441. [PMID: 37690998 DOI: 10.1002/cbic.202300441] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
NphB is an aromatic prenyltransferase with high promiscuity for phenolics including flavonoids, isoflavonoids, and plant polyketides. It has been demonstrated that cannabigerolic acid is successfully formed by the reaction catalysed by NphB using geranyl diphosphate and olivetolic acid as substrates. In this study, the substrate specificity of NphB was further determined by using olivetolic acid derivatives as potential substrates for the formation of new synthetic cannabinoids. The derivatives differ in the hydrocarbon chain attached to C6 of the core structure. We performed in silico experiments, including docking of olivetolic acid derivatives, to identify differences in their binding modes. Substrate acceptance was predicted. Based on these results, a library of olivetolic acid derivatives was constructed and synthesized by using different organic synthetic routes. Conversion was monitored in in vitro assays with purified NphB versions. For the substrates leading to a high conversion olivetolic acid-C8, olivetolic acid-C2 and 2-benzyl-4,6-dihydroxybenzoic acid, the products were further elucidated and identified as cannbigerolic acid derivatives. Therefore, these substrates show potential to be adapted in cannabinoid biosynthesis.
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Affiliation(s)
- Saskia Spitzer
- Technical Biochemistry Laboratory, Technical University Dortmund, 44227, Dortmund, Germany
| | - Jasmin Wloka
- Institute of Bioorganic Chemistry, Heinrich-Heine University Düsseldorf, 52426, Jülich, Germany
| | - Jörg Pietruszka
- Institute of Bioorganic Chemistry, Heinrich-Heine University Düsseldorf, 52426, Jülich, Germany
| | - Oliver Kayser
- Technical Biochemistry Laboratory, Technical University Dortmund, 44227, Dortmund, Germany
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3
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Micheletti AC, Honda NK, Ravaglia LM, Matayoshi T, Spielmann AA. Antibacterial potencial of 12 Lichen species. AN ACAD BRAS CIENC 2021; 93:S0001-37652021000700904. [PMID: 34705932 DOI: 10.1590/0001-3765202120191194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 12/30/2019] [Indexed: 11/21/2022] Open
Abstract
Resistant bacterial infections are a major public health problem worldwide, which entails the need to search for new therapeutic agents. In this context, lichens stand out, provided that they are producers of structurally diverse compounds that have attractive biological properties, including antimicrobial activity. Thus, extracts of 12 lichen species were prepared and their potential to inhibit the growth of 5 bacterial strains was evaluated in this work. The chemical compositions of these extracts were examined using TLC and microcrystallization, being the identity of the active compounds in each extract attributed based on the bioautography technique. The most active extracts (and their identified active compounds) were from Cladonia borealis (usnic, barbatic and 4-O-demethylbarbatic acids), Cladina confusa (usnic and perlatolic acids), Stereocaulom ramulosum (atranorin, perlatolic and anziaic acids) and Canoparmelia cryptochlorophaea (cryptochlorophaeic and caperatic acids), with MICs ranging from 7.8 to 31.25 μg/mL, including for resistant clinical strains. MIC values were also obtained for substances isolated from lichens for comparison purposes. A group of four extracts containing usnic acid was analyzed by 1H NMR in order to correlate relative proportion of major metabolites and extracts activity. The less active extracts in this group, in fact, presented low proportion of usnic acid.
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Affiliation(s)
- Ana C Micheletti
- Universidade Federal de Mato Grosso do Sul, Instituto de Química, Av. Sen. Filinto Muller, 1555, 79074-460 Campo Grande, MS, Brazil
| | - Neli K Honda
- Universidade Federal de Mato Grosso do Sul, Instituto de Química, Av. Sen. Filinto Muller, 1555, 79074-460 Campo Grande, MS, Brazil
| | - Luciana M Ravaglia
- Universidade Federal de Mato Grosso do Sul, Instituto de Química, Av. Sen. Filinto Muller, 1555, 79074-460 Campo Grande, MS, Brazil
| | - Tatiana Matayoshi
- Universidade Federal de Mato Grosso do Sul, Instituto de Química, Av. Sen. Filinto Muller, 1555, 79074-460 Campo Grande, MS, Brazil
| | - Adriano A Spielmann
- Universidade Federal de Mato Grosso do Sul, Instituto de Biociências, Av. Costa e Silva, s/n, 79070-900 Campo Grande, MS, Brazil
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4
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Khallaf A, Wang P, Zhuo S, Zhu H, Liu H. Synthesis, insecticidal activities, and structure–activity relationships of 1,3,4‐oxadiazole‐ring‐containing pyridylpyrazole‐4‐carboxamides as novel insecticides of the anthranilic diamide family. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Abdalla Khallaf
- School of Chemistry & Chemical Engineering Shandong University of Technology Zibo China
- Department of Applied Chemistry, College of Chemistry and Molecular Engineering Nanjing Tech University Nanjing China
| | - Ping Wang
- School of Chemistry & Chemical Engineering Shandong University of Technology Zibo China
| | - Shuping Zhuo
- School of Chemistry & Chemical Engineering Shandong University of Technology Zibo China
| | - Hongjun Zhu
- Department of Applied Chemistry, College of Chemistry and Molecular Engineering Nanjing Tech University Nanjing China
| | - Hui Liu
- School of Chemistry & Chemical Engineering Shandong University of Technology Zibo China
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5
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Muthusamy S, Malarvizhi M, Suresh E. Catalyst-free synthesis of 3,1-benzoxathiin-4-ones/1,3-benzodioxin-4-ones. Org Biomol Chem 2021; 19:1508-1513. [PMID: 33538754 DOI: 10.1039/d0ob02543g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An unambiguous and precise method for the synthesis of 3,1-benzoxathiin-4-ones/1,3-benzodioxin-4-ones by the reaction of propargylic alcohols and salicylic/thiosalicylic acids under a catalyst-free and open-air atmosphere is described. This strategy is found to be quite general using various 2-mercapto and 2-hydroxybenzoic acids providing benzoxathiinones/benzodioxinones in good yields.
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Affiliation(s)
| | | | - Eringathodi Suresh
- Analytical Discipline and Centralized Instrumentation Facility, Central Salt & Marine Chemicals Research Institute, Bhavnagar-364 002, India
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6
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Gülck T, Booth JK, Carvalho Â, Khakimov B, Crocoll C, Motawia MS, Møller BL, Bohlmann J, Gallage NJ. Synthetic Biology of Cannabinoids and Cannabinoid Glucosides in Nicotiana benthamiana and Saccharomyces cerevisiae. JOURNAL OF NATURAL PRODUCTS 2020; 83:2877-2893. [PMID: 33000946 DOI: 10.1021/acs.jnatprod.0c00241] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Phytocannabinoids are a group of plant-derived metabolites that display a wide range of psychoactive as well as health-promoting effects. The production of pharmaceutically relevant cannabinoids relies on extraction and purification from cannabis (Cannabis sativa) plants yielding the major constituents, Δ9-tetrahydrocannabinol and cannabidiol. Heterologous biosynthesis of cannabinoids in Nicotiana benthamiana or Saccharomyces cerevisiae may provide cost-efficient and rapid future production platforms to acquire pure and high quantities of both the major and the rare cannabinoids as well as novel derivatives. Here, we used a meta-transcriptomic analysis of cannabis to identify genes for aromatic prenyltransferases of the UbiA superfamily and chalcone isomerase-like (CHIL) proteins. Among the aromatic prenyltransferases, CsaPT4 showed CBGAS activity in both N. benthamiana and S. cerevisiae. Coexpression of selected CsaPT pairs and of CHIL proteins encoding genes with CsaPT4 did not affect CBGAS catalytic efficiency. In a screen of different plant UDP-glycosyltransferases, Stevia rebaudiana SrUGT71E1 and Oryza sativa OsUGT5 were found to glucosylate olivetolic acid, cannabigerolic acid, and Δ9-tetrahydrocannabinolic acid. Metabolic engineering of N. benthamiana for production of cannabinoids revealed intrinsic glucosylation of olivetolic acid and cannabigerolic acid. S. cerevisiae was engineered to produce olivetolic acid glucoside and cannabigerolic acid glucoside.
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Affiliation(s)
- Thies Gülck
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - J K Booth
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, BC, Canada V6T 1Z4
| | - Â Carvalho
- River Stone Biotech ApS, Fruebjergvej 3, 2100 København Ø, Denmark
| | - B Khakimov
- Chemometrics & Analytical Technology, Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958 Frederiksberg C, Denmark
| | - C Crocoll
- Copenhagen Plant Science Centre, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - M S Motawia
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - B L Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
- Copenhagen Plant Science Centre, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - J Bohlmann
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, BC, Canada V6T 1Z4
| | - N J Gallage
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
- Octarine Bio, Fruebjergvej 3, 2100 København Ø, Denmark
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7
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Nugraha AS, Untari LF, Laub A, Porzel A, Franke K, Wessjohann LA. Anthelmintic and antimicrobial activities of three new depsides and ten known depsides and phenols from Indonesian lichen: Parmelia cetrata Ach. Nat Prod Res 2020; 35:5001-5010. [PMID: 32375511 DOI: 10.1080/14786419.2020.1761361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
An extensive phytochemical study of a foliose lichen from Indonesia, Parmelia cetrata, resulted in the successful isolation of 13 phenol and depside derivatives (1-13) including the previously unreported depsides 3'-hydroxyl-5'-pentylphenyl 2,4-dihydroxyl-6-methylbenzoate (7), 3'-hydroxyl-5'-propylphenyl 2,4-dihydroxyl-6-methylbenzoate (8) and 3'-hydroxyl-5'-methylphenyl 2-hydroxyl-4-methoxyl-6-propylbenzoate (9). The anti-infective activity of isolated compounds was evaluated against the gram-negative bacterium Aliivibrio fischeri and the nematode Caenorhabditis elegans. 2,4-Dihydroxyl-6-pentylbenzoate (5) and lecanoric acid (6) induced growth inhibition of A. fischeri with inhibition values of 49% and 100% at a concentration of 100 µM, respectively. The antibacterial activity might be due to their free carboxyl group. A phenolic group at C4 also contributed to the antimicrobial activity of the depsides as shown for compounds 7 and 8, which caused 89% and 96% growth inhibition at 100 µM, respectively. Lecanoric acid (6) in addition possesses significant anthelmintic effects causing 80% mortality of C. elegans at 100 µg/mL.
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Affiliation(s)
- Ari Satia Nugraha
- Drug Utilisation and Discovery Research Group, Faculty of Pharmacy, University of Jember, Jember, Indonesia.,Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle/Saale, Germany
| | | | - Annegret Laub
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle/Saale, Germany
| | - Andrea Porzel
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle/Saale, Germany
| | - Katrin Franke
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle/Saale, Germany
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle/Saale, Germany
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8
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Sahoo SR, Sarkar D. Revisiting the Addition of in-situ Nucleophiles to Allenic Ketones: An Entry Towards Synthesis of Benzodioxins. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sushree Ranjan Sahoo
- Department of Chemistry; National Institute of Technology; Pin-769008 Rourkela Odisha India
| | - Debayan Sarkar
- Department of Chemistry; National Institute of Technology; Pin-769008 Rourkela Odisha India
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9
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Rama Krishna B, Ramakrishna S, Rajendra S, Madhusudana K, Mallavadhani UV. Synthesis of some novel orsellinates and lecanoric acid related depsides as α-glucosidase inhibitors. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2019; 21:1013-1027. [PMID: 29968482 DOI: 10.1080/10286020.2018.1490274] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
Sixteen novel orsellinic esters (6a-l, 7a-d) along with four lecanoric acid related depsides (3a-c, 4) were synthesized and confirmed their structures by spectroscopic data (1H, 13C & HRMS). The synthesized compounds were evaluated for their in vitro α-glucosidase (Saccharomyces cerevisiae) inhibitory potential. Among the tested compounds, 3c (IC50: 140.9 μM) and 6c (IC50: 203.9 μM) displayed potent α-glucosidase inhibitory activity and found more active than the standard drug acarbose (IC50: 686.6 μM). Both the test compounds were subjected to in vivo antihyperglycemic activity using sucrose loaded model in Wistar rats and found compound 3c exhibited significant reduction in glucose levels.
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Affiliation(s)
- Boddu Rama Krishna
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
| | - Sistla Ramakrishna
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Department of Pharmacology & Toxicology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
| | - Sangaraju Rajendra
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Department of Pharmacology & Toxicology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
| | - Kuncha Madhusudana
- Department of Pharmacology & Toxicology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
| | - Uppuluri Venkata Mallavadhani
- Natural Products Chemistry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology , Hyderabad 500007 , India
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10
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Yang Z, Jiang T, Zhong H, Kang Y. Bulge oligonucleotide as an inhibitory agent of bacterial topoisomerase I. J Enzyme Inhib Med Chem 2018; 33:319-323. [PMID: 29281935 PMCID: PMC6009931 DOI: 10.1080/14756366.2017.1419218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Bacterial topoisomerase I (Btopo I) was defined as potential target for discovery of new antibacterial compounds. Various oligonucleotides containing bulge structure were designed and synthesised as inhibitors to Btopo I in this investigation. The results of this study demonstrated that the designed oligonucleotides display high inhibitory efficiency on the activity of Btopo I and the inhibitory effect could be modulated by the amount of bulge DNA bases. The most efficient one among them showed an IC50 value of 63.1 nM in its inhibition on the activity of Btopo I. In addition, our studies confirmed that the designed oligonucleotide would induce irreversible damages to Btopo I and without any effects occur to eukaryotic topoisomerase I. It is our hope that the results provided in these studies could provide a novel way to inhibit Btopo I.
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Affiliation(s)
- Zhaoqi Yang
- a School of Pharmaceutical Sciences , Jiangnan University , Jiangsu , People's Republic of China.,b Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University , Jiangsu , People's Republic of China
| | - Tuoyu Jiang
- b Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University , Jiangsu , People's Republic of China
| | - Hanshi Zhong
- b Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University , Jiangsu , People's Republic of China
| | - Yu Kang
- b Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University , Jiangsu , People's Republic of China
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11
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He X, Li Y, Wang M, Chen HX, Chen B, Liang H, Zhang Y, Pang J, Qiu L. Highly efficient synthesis of benzodioxins with a 2-site quaternary carbon structure by secondary amine-catalyzed dual Michael cascade reactions. Org Biomol Chem 2018; 16:5533-5538. [DOI: 10.1039/c8ob01029c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Employing salicylic acids and substituted 3-butyn-2-ones as the substrates, a morpholine catalyzed tandem dual Michael addition afforded a benzodioxin skeleton.
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Affiliation(s)
- Xuefeng He
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Yongsu Li
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Meng Wang
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Hui-Xuan Chen
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Bin Chen
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Hao Liang
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Yaqi Zhang
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Jiyan Pang
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
| | - Liqin Qiu
- School of Chemistry
- The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center
- Sun Yat-sen University
- Guangzhou 510275
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12
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Yu X, Zhang M, Annamalai T, Bansod P, Narula G, Tse-Dinh YC, Sun D. Synthesis, evaluation, and CoMFA study of fluoroquinophenoxazine derivatives as bacterial topoisomerase IA inhibitors. Eur J Med Chem 2016; 125:515-527. [PMID: 27689733 DOI: 10.1016/j.ejmech.2016.09.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 09/16/2016] [Accepted: 09/17/2016] [Indexed: 10/21/2022]
Abstract
New antibacterial agents with novel target and mechanism of action are urgently needed to combat problematic bacterial infections and mounting antibiotic resistances. Topoisomerase IA represents an attractive and underexplored antibacterial target, as such, there is a growing interest in developing selective and potent topoisomerase I inhibitors for antibacterial therapy. Based on our initial biological screening, fluoroquinophenoxazine 1 was discovered as a low micromolar inhibitor against E. coli topoisomerase IA. In the literature, fluoroquinophenoxazine analogs have been investigated as antibacterial and anticancer agents, however, their topoisomerase I inhibition was relatively underexplored and there is little structure-activity relationship (SAR) available. The good topoisomerase I inhibitory activity of 1 and the lack of SAR prompted us to design and synthesize a series of fluoroquinophenoxazine analogs to systematically evaluate the SAR and to probe the structural elements of the fluoroquinophenoxazine core toward topoisomerase I enzyme target recognition. In this study, a series of fluoroquinophenoxazine analogs was designed, synthesized, and evaluated as topoisomerase I inhibitors and antibacterial agents. Target-based assays revealed that the fluoroquinophenoxazine derivatives with 9-NH2 and/or 6-substituted amine functionalities generally exhibited good to excellent inhibitory activities against topoisomerase I with IC50s ranging from 0.24 to 3.9 μM. Notably, 11a bearing the 6-methylpiperazinyl and 9-amino motifs was identified as one of the most potent topoisomerase I inhibitors (IC50 = 0.48 μM), and showed broad spectrum antibacterial activity (MICs = 0.78-7.6 μM) against all the bacteria strains tested. Compound 11g with the 6-bipiperidinyl lipophilic side chain exhibited the most potent antituberculosis activity (MIC = 2.5 μM, SI = 9.8). In addition, CoMFA analysis was performed to investigate the 3D-QSAR of this class of fluoroquinophenoxazine derivatives. The constructed CoMFA model produced reasonable statistics (q2 = 0.688 and r2 = 0.806). The predictive power of the developed model was obtained using a test set of 7 compounds, giving a predictive correlation coefficient r2pred of 0.767. Collectively, these promising data demonstrated that fluoroquinophenoxazine derivatives have the potential to be developed as a new chemotype of potent topoisomerase IA inhibitors with antibacterial therapeutic potential.
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Affiliation(s)
- Xufen Yu
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Mingming Zhang
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | | | - Priyanka Bansod
- Department of Chemistry & Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Gagandeep Narula
- Department of Chemistry & Biochemistry, Florida International University, Miami, FL 33199, USA
| | - Yuk-Ching Tse-Dinh
- Department of Chemistry & Biochemistry, Florida International University, Miami, FL 33199, USA; Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA
| | - Dianqing Sun
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawaii at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA.
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13
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Ristić S, Ranković B, Kosanić M, Stanojković T, Stamenković S, Vasiljević P, Manojlović I, Manojlović N. Phytochemical study and antioxidant, antimicrobial and anticancer activities of Melanelia subaurifera and Melanelia fuliginosa lichens. Journal of Food Science and Technology 2016; 53:2804-16. [PMID: 27478237 DOI: 10.1007/s13197-016-2255-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/12/2016] [Accepted: 05/17/2016] [Indexed: 10/21/2022]
Abstract
The aim of this study was to investigate antioxidant, antimicrobial and anticancerous activity of Melanelia subaurifera and Melanelia fuliginosa. The phytochemical analysis was determined by HPLC-UV method. Antioxidant activity was evaluated by DPPH and reducing power assay while antimicrobial activity was determined by minimal inhibitory concentration. The cytotoxic activity was tested using MTT method. The method for quantification of 2'-O-methyl anziaic acid and lecanoric acid in these lichens using RF-HPLC was also developed and validated. The depsides (lecanoric acid, gyrophoric acid, atranorin, anziaic acid and 2'-O-methyl anziaic acid), and dibenzofurane (usnic acid) were identified in these lichens. The antioxidant activity (IC50) of lichens extracts ranged from 121.52 to 424.51 μg/ml. 2'-O-Methyl anziaic acid showed the highest antimicrobial activity with MIC ranging from 0.0625 to 1 mg/ml. M. subaurifera extract showed the highest cytotoxic activity against the tested cell lines (IC50 = 9.88 to 31.64 μg/ml).
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Affiliation(s)
- Svetlana Ristić
- Department of Biology, Faculty of Science, University of Kragujevac, Kragujevac, 34000 Serbia
| | - Branislav Ranković
- Department of Biology, Faculty of Science, University of Kragujevac, Kragujevac, 34000 Serbia
| | - Marijana Kosanić
- Department of Biology, Faculty of Science, University of Kragujevac, Kragujevac, 34000 Serbia
| | | | - Slaviša Stamenković
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Nis, 18000 Serbia
| | - Perica Vasiljević
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Nis, 18000 Serbia
| | - Ivana Manojlović
- Department of Pharmacy, Faculty of Medicinal Sciences, University of Kragujevac, Kragujevac, 34000 Serbia
| | - Nedeljko Manojlović
- Department of Pharmacy, Faculty of Medicinal Sciences, University of Kragujevac, Kragujevac, 34000 Serbia
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14
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Yang X, Matsui T, Kodama T, Mori T, Zhou X, Taura F, Noguchi H, Abe I, Morita H. Structural basis for olivetolic acid formation by a polyketide cyclase from Cannabis sativa. FEBS J 2016; 283:1088-106. [PMID: 26783002 DOI: 10.1111/febs.13654] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/06/2016] [Accepted: 01/12/2016] [Indexed: 11/27/2022]
Abstract
UNLABELLED In polyketide biosynthesis, ring formation is one of the key diversification steps. Olivetolic acid cyclase (OAC) from Cannabis sativa, involved in cannabinoid biosynthesis, is the only known plant polyketide cyclase. In addition, it is the only functionally characterized plant α+β barrel (DABB) protein that catalyzes the C2-C7 aldol cyclization of the linear pentyl tetra-β-ketide CoA as the substrate, to generate olivetolic acid (OA). Herein, we solved the OAC apo and OAC-OA complex binary crystal structures at 1.32 and 1.70 Å resolutions, respectively. The crystal structures revealed that the enzyme indeed belongs to the DABB superfamily, as previously proposed, and possesses a unique active-site cavity containing the pentyl-binding hydrophobic pocket and the polyketide binding site, which have never been observed among the functionally and structurally characterized bacterial polyketide cyclases. Furthermore, site-directed mutagenesis studies indicated that Tyr72 and His78 function as acid/base catalysts at the catalytic center. Structural and/or functional studies of OAC suggested that the enzyme lacks thioesterase and aromatase activities. These observations demonstrated that OAC employs unique catalytic machinery utilizing acid/base catalytic chemistry for the formation of the precursor of OA. The structural and functional insights obtained in this work thus provide the foundation for analyses of the plant polyketide cyclases that will be discovered in the future. DATA DEPOSITION Structural data reported in this paper are available in the Protein Data Bank under the accession numbers 5B08 for the OAC apo, 5B09 for the OAC-OA binary complex and 5B0A, 5B0B, 5B0C, 5B0D, 5B0E, 5B0F and 5B0G for the OAC His5Q, Ile7F, Tyr27F, Tyr27W, Val59M, Tyr72F and His78S mutant enzymes, respectively.
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Affiliation(s)
- Xinmei Yang
- Institute of Natural Medicine, University of Toyama, Japan
| | - Takashi Matsui
- Institute of Natural Medicine, University of Toyama, Japan
| | - Takeshi Kodama
- Institute of Natural Medicine, University of Toyama, Japan
| | - Takahiro Mori
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan
| | - Xiaoxi Zhou
- Institute of Natural Medicine, University of Toyama, Japan
| | - Futoshi Taura
- Graduate School of Medicine and Pharmaceutical Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, University of Toyama, Japan
| | - Hiroshi Noguchi
- School of Pharmaceutical Sciences, University of Shizuoka, Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Japan
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15
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Targeting bacterial topoisomerase I to meet the challenge of finding new antibiotics. Future Med Chem 2016; 7:459-71. [PMID: 25875873 DOI: 10.4155/fmc.14.157] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Resistance of bacterial pathogens to current antibiotics has grown to be an urgent crisis. Approaches to overcome this challenge include identification of novel targets for discovery of new antibiotics. Bacterial topoisomerase I is present in all bacterial pathogens as a potential target for bactericidal topoisomerase poison inhibitors. Recent efforts have identified inhibitors of bacterial topoisomerase I with antibacterial activity. Additional research on the mode of action and binding site of these inhibitors would provide further validation of the target and establish that bacterial topoisomerase I is druggable. Bacterial topoisomerase I is a potentially high value target for discovery of new antibiotics. Demonstration of topoisomerase I as the cellular target of an antibacterial compound would provide proof-of-concept validation.
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16
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Yang Z, Jiang T, Zhong H, Liu Y. Portion mismatch in duplex oligonucleotides as inhibitors of bacterial topoisomerase I. RSC Adv 2016. [DOI: 10.1039/c6ra23304j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The activities of bacterial topoisomerase I can be modulated by non-perfect match duplex oligonucleotides.
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Affiliation(s)
- Zhaoqi Yang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
- China
- School of Pharmaceutical Sciences
| | - Tuoyu Jiang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
- China
| | - Hanshi Zhong
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
- China
| | - Yuanfa Liu
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
- China
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17
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Ravishankar S, Ambady A, Awasthy D, Mudugal NV, Menasinakai S, Jatheendranath S, Guptha S, Sharma S, Balakrishnan G, Nandishaiah R, Ramachandran V, Eyermann CJ, Reck F, Rudrapatna S, Sambandamurthy VK, Sharma UK. Genetic and chemical validation identifies Mycobacterium tuberculosis topoisomerase I as an attractive anti-tubercular target. Tuberculosis (Edinb) 2015; 95:589-98. [PMID: 26073894 DOI: 10.1016/j.tube.2015.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/30/2015] [Accepted: 05/13/2015] [Indexed: 12/21/2022]
Abstract
DNA topoisomerases perform the essential function of maintaining DNA topology in prokaryotes. DNA gyrase, an essential enzyme that introduces negative supercoils, is a clinically validated target. However, topoisomerase I (Topo I), an enzyme responsible for DNA relaxation has received less attention as an antibacterial target, probably due to the ambiguity over its essentiality in many organisms. The Mycobacterium tuberculosis genome harbors a single topA gene with no obvious redundancy in its function suggesting an essential role. The topA gene could be inactivated only in the presence of a complementing copy of the gene in M. tuberculosis. Furthermore, down-regulation of topA in a genetically engineered strain of M. tuberculosis resulted in loss of bacterial viability which correlated with a concomitant depletion of intracellular Topo I levels. The topA knockdown strain of M. tuberculosis failed to establish infection in a murine model of TB and was cleared from lungs in two months post infection. Phenotypic screening of a Topo I overexpression strain led to the identification of an inhibitor, thereby providing chemical validation of this target. Thus, our work confirms the attractiveness of Topo I as an anti-mycobacterial target.
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Affiliation(s)
- Sudha Ravishankar
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India.
| | - Anisha Ambady
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | - Disha Awasthy
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | | | | | | | - Supreeth Guptha
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | - Sreevalli Sharma
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | | | - Radha Nandishaiah
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | | | - Charles J Eyermann
- AstraZeneca Infection, Innovative Medicines, 35 Gatehouse Drive, Waltham, MA 02451, United States
| | - Folkert Reck
- AstraZeneca Infection, Innovative Medicines, 35 Gatehouse Drive, Waltham, MA 02451, United States
| | - Suresh Rudrapatna
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
| | | | - Umender K Sharma
- AstraZeneca India Pvt. Ltd., Bellary Road, Hebbal, Bangalore 560024, India
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18
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Lugiņina J, Bizdēna Ē, Leonciks A, Kumpiņš V, Grīnšteine I, Turks M. Synthesis and Antibacterial Activity of 5-Phthalate and 5-Glutarate Derivatives of Milbemycins A3/A4*. Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1604-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Feng L, Maddox MM, Alam MZ, Tsutsumi LS, Narula G, Bruhn DF, Wu X, Sandhaus S, Lee RB, Simmons CJ, Tse-Dinh YC, Hurdle JG, Lee RE, Sun D. Synthesis, structure-activity relationship studies, and antibacterial evaluation of 4-chromanones and chalcones, as well as olympicin A and derivatives. J Med Chem 2014; 57:8398-420. [PMID: 25238443 PMCID: PMC4207537 DOI: 10.1021/jm500853v] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
![]()
On
the basis of recently reported abyssinone II and olympicin A, a series
of chemically modified flavonoid phytochemicals were synthesized and
evaluated against Mycobacterium tuberculosis and
a panel of Gram-positive and -negative bacterial pathogens. Some of
the synthesized compounds exhibited good antibacterial activities
against Gram-positive pathogens including methicillin resistant Staphylococcus aureus with minimum inhibitory concentration
as low as 0.39 μg/mL. SAR analysis revealed that the 2-hydrophobic
substituent and the 4-hydrogen bond donor/acceptor of the 4-chromanone
scaffold together with the hydroxy groups at 5- and 7-positions enhanced
antibacterial activities; the 2′,4′-dihydroxylated A
ring and the lipophilic substituted B ring of chalcone derivatives
were pharmacophoric elements for antibacterial activities. Mode of
action studies performed on selected compounds revealed that they
dissipated the bacterial membrane potential, resulting in the inhibition
of macromolecular biosynthesis; further studies showed that selected
compounds inhibited DNA topoisomerase IV, suggesting complex mechanisms
of actions for compounds in this series.
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Affiliation(s)
- Li Feng
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo , 34 Rainbow Drive, Hilo, Hawaii 96720, United States
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20
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Liu Q, Chen K, Wang Q, Ni J, Li Y, Zhu H, Ding Y. Synthesis, insecticidal activity, structure–activity relationship (SAR) and density functional theory (DFT) of novel anthranilic diamides analogs containing 1,3,4-oxadiazole rings. RSC Adv 2014. [DOI: 10.1039/c4ra06356b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A series of anthranilic diamides analogs (5a–x) containing 1,3,4-oxadiazole rings were synthesized, and their insecticidal activities were evaluated. The density functional theory (DFT) studies was used to understand the various insecticidal activities.
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Affiliation(s)
- Qi Liu
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
| | - Kai Chen
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
| | - Qiang Wang
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
| | - Jueping Ni
- Jiangsu Pesticide Research Institute Co Ltd
- Nanjing 210047, P. R. China
| | - Yufeng Li
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
| | - Hongjun Zhu
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
| | - Yuan Ding
- Department of Applied Chemistry
- College of Science
- Nanjing Tech University
- Nanjing 211816, P. R. China
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