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He J, Zhou B, Wang X, Chen Q, Jiang X, Kong T, Yao L, Zhao Y, Chen R, Xu Y, Dai H. Design, Synthesis and Bioactivities of Novel Pyridyl Containing Pyrazole Oxime Ether Derivatives. Molecules 2024; 29:2767. [PMID: 38930832 PMCID: PMC11206151 DOI: 10.3390/molecules29122767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
In this research, with an aim to develop novel pyrazole oxime ether derivatives possessing potential biological activity, thirty-two pyrazole oxime ethers, including a substituted pyridine ring, have been synthesized and structurally identified through 1H NMR, 13C NMR, and HRMS. Bioassay data indicated that most of these compounds owned strong insecticidal properties against Mythimna separata, Tetranychus cinnabarinus, Plutella xylostella, and Aphis medicaginis at a dosage of 500 μg/mL, and some title compounds were active towards Nilaparvata lugens at 500 μg/mL. Furthermore, some of the designed compounds had potent insecticidal effects against M. separata, T. cinnabarinus, or A. medicaginis at 100 μg/mL, with the mortalities of compounds 8a, 8c, 8d, 8e, 8f, 8g, 8o, 8s, 8v, 8x, and 8z against A. medicaginis, in particular, all reaching 100%. Even when the dosage was lowered to 20 μg/mL, compound 8s also expressed 50% insecticidal activity against M. separata, and compounds 8a, 8e, 8f, 8o, 8v, and 8x displayed more than 60% inhibition rates against A. medicaginis. The current results provided a significant basis for the rational design of biologically active pyrazole oxime ethers in future.
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Affiliation(s)
- Jie He
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Beibei Zhou
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Xinjuan Wang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Qi Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Xiaoqian Jiang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Ting Kong
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Long Yao
- Analysis and Testing Center, Nantong University, Nantong 226019, China
| | - Yingying Zhao
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Rong Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Ying Xu
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
| | - Hong Dai
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; (J.H.); (B.Z.); (X.W.); (Q.C.); (X.J.); (T.K.); (Y.Z.); (R.C.); (Y.X.)
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Shalaby MA, BinSabt MH, Rizk SA, Fahim AM. Novel pyrazole and imidazolone compounds: synthesis, X-ray crystal structure with theoretical investigation of new pyrazole and imidazolone compounds anticipated insecticide's activities against targeting Plodia interpunctella and nilaparvata lugens. RSC Adv 2024; 14:10464-10480. [PMID: 38567329 PMCID: PMC10985537 DOI: 10.1039/d4ra00602j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/11/2024] [Indexed: 04/04/2024] Open
Abstract
In this study, we synthesized (2-propoxyphenyl)(3-(p-tolyl)oxiran-2-yl)methanone through oxidizing the double bond of the respective chalcone via the Weitz-Scheffer epoxidation reaction. Additionally, the chalcone with an oxirane ring served as a fundamental building block for the synthesis of various pyrazole and imidazole derivatives, employing diverse nitrogen nucleophiles. All synthesized compounds were confirmed via analytical and spectroscopic analysis, such as FT-IR, 1H NMR, 13C NMR, and mass spectroscopy. Furthermore, all these nitrogen heterocycles were optimized via the DFT/B3LYP/6-31G(d,p) basis set and their physical descriptors were identified. Compound 11 was further confirmed using single-crystal X-ray diffraction with Hirshfeld analysis, and the results were correlated with the optimized structure by comparing their bond length and bond angle, which provided excellent correlation. Additionally, the insecticidal activities of the newly synthesized compounds were tested against P. interpunctella and Nilaparvata lugens. The heterocyclic compounds exhibited remarkable activity compared to the standard reference thiamethoxam. These findings were further confirmed through docking simulation with different proteins, namely PDBID 3aqy and 3wyw. The compounds interacted effectively within the protein pockets, displaying a higher binding energy with amino acids.
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Affiliation(s)
- Mona A Shalaby
- Chemistry Department, Faculty of Science, University of Kuwait P.O. Box 5969, Safat 13060 Kuwait
| | - Mohammad H BinSabt
- Chemistry Department, Faculty of Science, University of Kuwait P.O. Box 5969, Safat 13060 Kuwait
| | - Sameh A Rizk
- Chemistry Department, Faculty of Science, Ain Shams University Abbassia, P.O. 11566 Cairo Egypt
| | - Asmaa M Fahim
- Green Chemistry Department, National Research Centre Dokki P.O. Box 12622 Cairo Egypt
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Chen D, Zhang M, Zhang D, Zhang Z, Shao X, Xu X, Li Z, Yang WL. Iridium/Acid Dual-Catalyzed Enantioselective Aza-ene-type Allylic Alkylation of Nitro Ketene Aminals with Racemic Allylic Alcohols. Org Lett 2024. [PMID: 38179928 DOI: 10.1021/acs.orglett.3c03939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
The enantioselective allylic alkylation of nitro ketene aminals with racemic allylic alcohols was realized by iridium/acid dual catalysis. An allyl group was installed on the α-position of nitro ketene aminals in a branched-selective manner in high efficiency with excellent enantioselectivities (93-99% ee). The protocol was applied to the late-stage modification of neonicotinoid insecticides, which directly furnished a novel neonicotinoid analogue with good insecticidal activity against Aphis craccivora (LC50 = 6.40 mg/L). On the basis of the control experiment, an aza-ene-type allylic alkylation reaction mechanism was proposed.
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Affiliation(s)
- Diancong Chen
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Man Zhang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Dongxu Zhang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Ziqi Zhang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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Han L, Yuan Z, Shao X, Xu X, Li Z. Synthesis, insecticidal activity and stability study of novel nitromethylene neonicotinoids with five-membered aromatic heterocycles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Alkhatib MM, Abdalha AA, Samir SS, Youssef ASA, Abou-Elmagd WSI, Haneen DSA. An efficient synthesis of some newly anthracene derivatives having effective insecticidal activity. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2087044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Musaab M. Alkhatib
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Abdelaal A. Abdalha
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Sandy S. Samir
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed S. A. Youssef
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | | | - David S. A. Haneen
- Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
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Ghareeb EA, Mahmoud NFH, El-Bordany EA, El-Helw EAE. Synthesis, DFT, and eco-friendly insecticidal activity of some N-heterocycles derived from 4-((2-oxo-1,2-dihydroquinolin-3-yl)methylene)-2-phenyloxazol-5(4H)-one. Bioorg Chem 2021; 112:104945. [PMID: 33964579 DOI: 10.1016/j.bioorg.2021.104945] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 04/17/2021] [Accepted: 04/22/2021] [Indexed: 10/21/2022]
Abstract
A new series of nitrogen heterocycles encompassing a quinoline scaffold such as imidazolone, benzimidazole, triazinone, triazole, and thiazole derivatives was synthesized utilizing the readily obtainable building block synthon, 4-((2-oxo-1,2-dihydroquinolin-3-yl)methylene)-2-phenyloxazol-5(4H)-one (3). It was interesting that the fused heterocycle, pyranoquinoline derivative 15 was successfully synthesized by different routes of reactions. The synthesized compounds were evaluated for their insecticidal activity and compounds 6, 17, and 20 were the most potent against both Mythimna separata and Nilaparvata lugens. The DFT study was performed for the most potent compounds.
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Affiliation(s)
- Eman A Ghareeb
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt
| | - Naglaa F H Mahmoud
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt
| | - Eman A El-Bordany
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt
| | - Eman A E El-Helw
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt.
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Liu A, Ma D, Qian Y, Li J, Zhai S, Wang Y, Chen C. A powerful azomethine ylide route mediated by TiO 2 photocatalysis for the preparation of polysubstituted imidazolidines. Org Biomol Chem 2021; 19:2192-2197. [PMID: 33625413 DOI: 10.1039/d0ob02277b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lewis- and Brønsted-acid catalyzed 1,3-dipolar cycloaddition between azomethine ylides and unsaturated compounds is an important strategy to construct five-membered N-heterocycles. However, such a catalytic route usually demands substrates with an electron-withdrawing group (EWG) to facilitate the reactivity. Herein, we report a TiO2 photocatalysis strategy that can conveniently prepare five-membered N-heterocyclic imidazolidines from a common imine (N-benzylidenebenzylamine) and alcohols along the route of 1,3-dipolaron azomethine ylide but without pre-installed EWG substituents on the substrates. Our EPR results uncovered the previously unknown mutual interdependence between an azomethine ylide and TiO2 photo-induced hvb+/ecb- pair. This transformation exhibited a broad scope with 21 successful examples and could be scaled up to the gram level.
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Affiliation(s)
- Anan Liu
- Basic Experimental Centre for Natural Science, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing, 100083, China and School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Beijing, 100083, China
| | - Dongge Ma
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Yuhang Qian
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Jundan Li
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Shan Zhai
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Yi Wang
- Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Fucheng Road 11, Beijing, 100048, China.
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 100190, China
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Singh A, Leppanen C. Known Target and Nontarget Effects of the Novel Neonicotinoid Cycloxaprid to Arthropods: A Systematic Review. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2020; 16:831-840. [PMID: 32592520 DOI: 10.1002/ieam.4305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/05/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Neonicotinoids are the most widely used insecticide class worldwide, and unfortunately, the widely used neonicotinoid imidacloprid is problematic for pollinators and other nontarget organisms. These nontarget impacts and the development of resistance prompt the ongoing development and testing of new neonicotinoids. The novel neonicotinoid cycloxaprid was described in 2011 and registered in China in 2015. Studies investigating its use and effect on target and nontarget species are recent and ongoing, and empirical evidence has not yet been collectively considered. Therefore, a systematic review was performed to identify and summarize data associated with target and nontarget, lethal and sublethal impacts of cycloxaprid for its use as a new insecticide. We performed keyword literature searches in Web of Science, PubMed, Academic Search Complete, and Google Scholar and explored citations used in identified articles. The search strategy yielded 66 citations; 25 citations fulfilled eligibility criteria and were included in the review. Under experimental conditions, cycloxaprid reduced populations of plant-feeding insect pests, suppressed populations of sucking and biting insect pests, and affected reproduction, development time, longevity, growth, gene regulation and expression, and phloem-feeding behavior of various life stages of certain insects. Studies focus on pest control efficacy and comparison with imidacloprid. Five nontarget organisms have been evaluated: Apis mellifera, Chrysoperla sinica, Harmonia axyridis, Daphnia magna, and Eisenia fetida. Variation in study design, to date, precludes a metaanalysis. However, these results provide valuable insight into possible effects to target and nontarget arthropods. Because cycloxaprid is a new insecticide, additional research is needed to clarify the mechanism of action of cycloxaprid and its metabolites, and to determine if it harms natural enemies or other nontarget organisms, if resistance develops, and if it exhibits cross-resistance with other insecticides. Although research on target arthropods will inform some effects on nontarget organisms, studies focusing explicitly on impacts to nontarget organisms are needed. Integr Environ Assess Manag 2020;16:831-840. © 2020 SETAC.
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Affiliation(s)
- Anisha Singh
- Department of Public Health, University of Tennessee, Knoxville, Tennessee, USA
| | - Christy Leppanen
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, USA
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Halim KNM, Ramadan SK, Rizk SA, El-Hashash MA. Synthesis, DFT study, molecular docking and insecticidal evaluation of some pyrazole-based tetrahydropyrimidine derivatives. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1720739] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Karema N. M. Halim
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Egypt
| | - Sayed K. Ramadan
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Egypt
| | - Sameh A. Rizk
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Egypt
| | - Maher A. El-Hashash
- Chemistry Department, Faculty of Science, Ain Shams University, Abassia, Egypt
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Ramadan SK, Halim KNM, Rizk SA, El-Hashash MA. Cytotoxic activity and density functional theory studies of some 1,3-diphenylpyrazolyltetrahydropyrimidine derivatives. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01880-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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11
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da Silva Mesquita R, Kyrylchuk A, Grafova I, Kliukovskyi D, Bezdudnyy A, Rozhenko A, Tadei WP, Leskelä M, Grafov A. Synthesis, molecular docking studies, and larvicidal activity evaluation of new fluorinated neonicotinoids against Anopheles darlingi larvae. PLoS One 2020; 15:e0227811. [PMID: 32023266 PMCID: PMC7001894 DOI: 10.1371/journal.pone.0227811] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 12/30/2019] [Indexed: 01/06/2023] Open
Abstract
Anopheles darlingi is the main vector of malaria in Brazil, characterized by a high level of anthropophilia and endophagy. Imidacloprid, thiacloprid, and acetamiprid are the most widespread insecticides of the neonicotinoid group. However, they produce adverse effects on the non-target insects. Flupyradifurone has been marketed as an alternative to non-fluorinated neonicotinoids. Neonicotinoids containing trifluoroacethyl substituent reveal increased insecticidal activity due to higher hydrophobicity and metabolic stability. We synthesized novel neonicotinoid insecticides containing fluorinated acceptor groups and their interactions were estimated with the nicotinic acetylcholine receptor (nAChR) binding site by molecular docking studies, to evaluate their larvicidal activity against A. darlingi, and to assess their outdoor photodegradation behavior. New neonicotinoid analogues were prepared and characterized by NMR and mass-spectrometry. The synthesized molecules were modelled by time-dependent density functional theory and analyzed, their interaction with nAChR was investigated by molecular docking. Their insecticide activity was tested on Anopheles larvae collected in suburban area of Manaus, Brazil. Four new fluorinated neonicotinoid analogs were prepared and tested against 3rd instars larvae of A. darlingi showing high larvicidal activity. Docking studies reveal binding modes of the synthesized compounds and suggest that their insecticidal potency is governed by specific interactions with the receptor binding site and enhanced lipophilicity. 2-Chloro-5-(2-trifluoromethyl-pyrrolidin-1-ylmethyl)pyridine 5 showed fast degradation in water maintaining high larvicidal activity. All obtained substances possessed high larvicidal activity in low concentrations in 48 hours of exposure, compared to commercial flupyradifurone. Such activity is connected to a unique binding pattern of the synthesized compounds to insect's nAChR and to their enhanced bioavailability owing to introduction of fluorinated amino-moieties. Therefore, the compounds in question have a high potential for application as control agents for insects transmitting tropical diseases, and they will be less persistent in the environment.
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Affiliation(s)
| | - Andrii Kyrylchuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Iryna Grafova
- Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Denys Kliukovskyi
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Andriy Bezdudnyy
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Alexander Rozhenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Wanderli Pedro Tadei
- Malaria and Dengue Laboratory, National Institute for Amazonian Research, Manaus, Amazonas, Brazil
| | - Markku Leskelä
- Department of Chemistry, University of Helsinki, Helsinki, Finland
| | - Andriy Grafov
- Department of Chemistry, University of Helsinki, Helsinki, Finland
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Youssef YM, El‐Sayed AA, Azab ME. Utility of Benzoxazin‐4‐one and 3‐Aminoquinazolin‐4‐one Derivatives as Precursors for Construction of Potent Insecticidal Heterocycles. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Youssef M. Youssef
- Synthetic Organic Chemistry Laboratory, Chemistry Department, Faculty of ScienceAin Shams University, Abbassia Cairo 11566 Egypt
| | - Amira A. El‐Sayed
- Synthetic Organic Chemistry Laboratory, Chemistry Department, Faculty of ScienceAin Shams University, Abbassia Cairo 11566 Egypt
| | - Mohammad E. Azab
- Synthetic Organic Chemistry Laboratory, Chemistry Department, Faculty of ScienceAin Shams University, Abbassia Cairo 11566 Egypt
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Condition‐Based Selective Synthesis of 3,4,5‐Trisubstituted Isoxazoline N
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oxides, 4,5‐Dihydroisoxazoles and Isoxazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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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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Qi S, Wang D, Zhu L, Teng M, Wang C, Xue X, Wu L. Neonicotinoid insecticides imidacloprid, guadipyr, and cycloxaprid induce acute oxidative stress in Daphnia magna. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 148:352-358. [PMID: 29096261 DOI: 10.1016/j.ecoenv.2017.10.042] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/26/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
Cycloxaprid (CYC) and guadipyr (GUA) are two new and promising neonicotinoid insecticides whose effects on Daphnia magna are as yet unknown. In this study, the acute toxicities of CYC and GUA to D. magna, including immobilization and embryo-hatching inhibition, and their effects on antioxidant enzymes and related gene expression were determined after a 48-h exposure. Imidacloprid (IMI) was evaluated at the same time as a reference agent. The 48-h EC50 values of IMI, GUA, and CYC for neonate immobilization were 13.0-16.5mg/L and for embryo hatching were 11.3-16.2mg/L. The specific activity of the enzymes superoxide dismutase (SOD) and catalase (CAT) were interfered by IMI, but not by GUA and CYC, while the activity of acetylcholinesterase (AChE) was significantly increased by IMI, but inhibited by GUA and CYC. The relative expressions of the Sod-Cu/Zn, Sod-Mn, Cat, and Ache genes were usually inhibited by IMI, GUA, and CYC, except for Cat by CYC, Ache by GUA, and Sods by IMI. For vitellogenin genes with a SOD-like domain (Vtg1/2-sod), relative expression was increased by IMI and inhibited by GUA and CYC, indicating that IMI, GUA, and CYC have potential toxicity toward reproduction. CYC and GUA are highly active against IMI-resistant pests, and considering the similar toxicity of IMI to D. magna, CYC and GUA are suitable for use in future integrated pest management systems.
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Affiliation(s)
- Suzhen Qi
- Risk Assessment Laboratory for Bee Products Quality and Safety of Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China; College of Sciences, China Agricultural University, Beijing 100093, PR China
| | - Donghui Wang
- College of Life Sciences, Peking University, 5 Yiheyuan Road, Beijing 100871, PR China
| | - Lizhen Zhu
- College of Sciences, China Agricultural University, Beijing 100093, PR China
| | - Miaomiao Teng
- College of Sciences, China Agricultural University, Beijing 100093, PR China
| | - Chengju Wang
- College of Sciences, China Agricultural University, Beijing 100093, PR China
| | - Xiaofeng Xue
- Risk Assessment Laboratory for Bee Products Quality and Safety of Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China
| | - Liming Wu
- Risk Assessment Laboratory for Bee Products Quality and Safety of Ministry of Agriculture, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, PR China.
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Design, Synthesis and Bioactivities of Novel Isoxazole-Containing Pyrazole Oxime Derivatives. Molecules 2017; 22:molecules22122000. [PMID: 29186906 PMCID: PMC6149770 DOI: 10.3390/molecules22122000] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 11/24/2017] [Accepted: 11/24/2017] [Indexed: 11/17/2022] Open
Abstract
In this study, in order to find novel biologically active pyrazole oxime derivatives, twenty-eight new pyrazole oxime compounds containing a substituted isoxazole ring were synthesized and evaluated for their acaricidaland insecticidal activities. Bioassays exhibited that some target compounds indicated good acaricidal and insecticidal activities against Tetranychus cinnabarinus, Aphis medicaginis, Mythimna separata, and Nilaparvata lugens. Especially, compounds 9c, 9h, 9u, and 9v showed 100.00%, 90.56%, 90.78%, and 90.62% insecticidal activities against A. medicaginis at the concentration of 20 μg/mL, respectively, compounds 9k and 9u had 70.86% and 100.00% insecticidal activities against M. separata at 20 μg/mL, respectively.
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17
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Design, synthesis, and bioactivities of novel oxadiazole-substituted pyrazole oximes. Bioorg Med Chem Lett 2017; 27:950-953. [DOI: 10.1016/j.bmcl.2016.12.083] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/18/2016] [Accepted: 12/29/2016] [Indexed: 11/21/2022]
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18
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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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19
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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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20
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Dai H, Ge S, Li G, Chen J, Shi Y, Ye L, Ling Y. Synthesis and bioactivities of novel pyrazole oxime derivatives containing a 1,2,3-thiadiazole moiety. Bioorg Med Chem Lett 2016; 26:4504-4507. [DOI: 10.1016/j.bmcl.2016.07.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 07/08/2016] [Accepted: 07/28/2016] [Indexed: 02/03/2023]
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21
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Dai H, Li G, Chen J, Shi Y, Ge S, Fan C, He H. Synthesis and biological activities of novel 1,3,4-thiadiazole-containing pyrazole oxime derivatives. Bioorg Med Chem Lett 2016; 26:3818-21. [PMID: 27324978 DOI: 10.1016/j.bmcl.2016.04.094] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/25/2016] [Accepted: 04/28/2016] [Indexed: 01/05/2023]
Abstract
A new library of 1,3,4-thiadiazole-containing pyrazole oximes was designed and synthesized. Their acaricidal and insecticidal activities were evaluated. Bioassay results indicated that some target compounds exhibited good acaricidal and insecticidal properties. Especially, compound 8m had 80% acaricidal activity against Tetranychus cinnabarinus at the concentration of 50μg/mL, compound 8f displayed 100% insecticidal activities against Aphis craccivora at the concentration of 50μg/mL, compounds 8r and 8w showed 100% insecticidal activities against Plutella xylostella at the concentration of 50μg/mL. Furthermore, compounds 8r (LC50=19.61μg/mL) and 8w (LC50=9.78μg/mL) possessed comparable or even better insecticidal activities than the control Pyridalyl (LC50=17.40μg/mL) against P. xylostella.
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Affiliation(s)
- Hong Dai
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China
| | - Gang Li
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China
| | - Jia Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China
| | - Yujun Shi
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China.
| | - Shushan Ge
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China
| | - Chongguang Fan
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China
| | - Haibing He
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China.
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22
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Dai H, Chen J, Li H, Dai B, He H, Fang Y, Shi Y. Synthesis and Bioactivities of Novel Pyrazole Oxime Derivatives Containing a 5-Trifluoromethylpyridyl Moiety. Molecules 2016; 21:276. [PMID: 26927054 PMCID: PMC6273062 DOI: 10.3390/molecules21030276] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 11/29/2022] Open
Abstract
In this study, in order to find novel biologically active pyrazole oxime compounds, a series of pyrazole oxime derivatives containing a 5-trifluoromethylpyridyl moiety were synthesized. Preliminary bioassays indicated that most title compounds were found to display good to excellent acaricidal activity against Tetranychus cinnabarinus at a concentration of 200 μg/mL, and some designed compounds still showed excellent acaricidal activity against Tetranychus cinnabarinus at the concentration of 10 μg/mL, especially since the inhibition rates of compounds 8e, 8f, 8l, 8m, 8n, 8p, and 8q were all 100.00%. Interestingly, some target compounds exhibited moderate to good insecticidal activities against Plutella xylostella and Aphis craccivora at a concentration of 200 μg/mL; furthermore, compounds 8e and 8l possessed outstanding insecticidal activities against Plutella xylostella under the concentration of 50 μg/mL.
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Affiliation(s)
- Hong Dai
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Jia Chen
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Hong Li
- Nantong Fengtian Chemical Industry Co. Ltd., Nantong 226005, China.
| | - Baojiang Dai
- School of Chemical and Biological Engineering, Nantong Vocational University, Nantong 226007, China.
| | - Haibing He
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Yuan Fang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Yujun Shi
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
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23
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Sun F, Shao X, Li Z. Access to indenofurans and indenopyridines via annulation of heterocyclic ketene aminals, o-phthalaldehyde and cyclic 1,3-diketones. RSC Adv 2016. [DOI: 10.1039/c5ra23393c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Access of indenofurans and indenopyridines through a one pot, three-component protocol.
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Affiliation(s)
- Feilong Sun
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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24
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Dai H, Ye L, Zhuang H, Dai B, Fang Y, Shi Y. Design, Synthesis and Bioactivities of Novel Dichloro-Allyloxy-Phenol-Containing Pyrazole Oxime Derivatives. Molecules 2015; 20:21870-80. [PMID: 26670221 PMCID: PMC6332197 DOI: 10.3390/molecules201219811] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 11/27/2015] [Accepted: 12/02/2015] [Indexed: 11/21/2022] Open
Abstract
In this study, in order to find novel biologically active pyrazole oxime compounds, a number of dichloro-allyloxy-phenol-containing pyrazole oximes were designed and synthesized according to the method of active group combination. All of the target compounds were confirmed by 1H-NMR, 13C-NMR and elemental analysis. In addition, bioassays showed that all of the newly synthesized compounds had no acaricidal activity against Tetranychus cinnabarinus and low insecticidal activity against Aphis craccivora at tested concentrations. However, most of them displayed excellent insecticidal activity against Oriental armyworm at a concentration of 500 μg/mL, and some designed compounds still exhibited potent insecticidal activity against Oriental armyworm even at the dose of 20 μg/mL, especially compounds 7f, 7n and 7p had 100%, 90% and 90% inhibition rates, respectively, which were comparable to that of the control pyridalyl.
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Affiliation(s)
- Hong Dai
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Linyu Ye
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Huiyang Zhuang
- Nantong Nanshen Plant Protection Science and Technology Development Co. Ltd., Nantong 226017, China.
| | - Baojiang Dai
- School of Chemical and Biological Engineering, Nantong Vocational University, Nantong 226007, China.
| | - Yuan Fang
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
| | - Yujun Shi
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
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25
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Design, synthesis, and insecticidal bioactivities evaluation of pyrrole- and dihydropyrrole-fused neonicotinoid analogs containing chlorothiazole ring. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.03.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Zou MM, Zhu FJ, Tian X, Ren LP, Shao XS, Li Z. A novel and facile synthesis of 2-oxo-1,2-dihydropyridine-fused 1,3-diazaheterocycles via heterocyclic ketene aminals and Konevenagel adducts formed by phthalic anhydride and ethyl cyanacetate. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Xu R, Luo M, Xia R, Meng X, Xu X, Xu Z, Cheng J, Shao X, Li H, Li Z. Seven-membered azabridged neonicotinoids: synthesis, crystal structure, insecticidal assay, and molecular docking studies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11070-11079. [PMID: 25347284 DOI: 10.1021/jf504014y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To study the influence of the ring sizes, 37 novel seven-membered azabridged neonicotinoid analogues were synthesized by reactions of nitromethylene analogues, succinaldehyde, and aniline hydrochlorides. Most of the title compounds presented higher insecticidal activities than that of imidacloprid (IMI), cycloxaprid (CYC), and eight-membered compounds against cowpea aphid (Aphis craccivora), armyworm (Pseudaletia separata Walker), and brown planthopper (Nilaparvata lugens), which indicated that introducing the structure of a seven-membered azabridge could significantly improve the insecticidal activities of neonicotinoid analogues. Docking study and binding mode analysis also revealed that introducing methyl group into position 2 of phenyl ring could increase the hydrophobic interactions with receptor, which implied that position 2 might be the key site to get high insecticidal compounds.
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Affiliation(s)
- Renbo Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology , Shanghai 200237, China
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28
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Chen N, Zou M, Tian X, Zhu F, Jiang D, Cheng J, Shao X, Li Z. Isomerization of Ninhydrin-Heterocyclic Ketene Aminal Adducts: Kinetic versus Thermodynamic Control, Solvent Dependency and Mechanism. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402677] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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