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Al-Mustafa A, Al-Zereini W, Ashram M, Al-Sha’er MA. Evaluation of antibacterial, antioxidant, cytotoxic, and acetylcholinesterase inhibition activities of novel [1,4] benzoxazepines fused to heterocyclic systems with a molecular modeling study. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02999-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Liu X, Yang D, Yin F, Li JQ, Xiao Y, Fu B, Qin Z. The application of "plug-in molecules" method in novel strobilurin fungicides screening. RSC Adv 2020; 10:42804-42809. [PMID: 35514912 PMCID: PMC9057997 DOI: 10.1039/d0ra06263d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/05/2020] [Indexed: 11/23/2022] Open
Abstract
Based on the “plug-in molecular” method, a series of novel strobilurin derivatives with aryloxypyridinyl-1-ethanone oxime side chains were designed, synthesized, and screened. The biological activity experiment showed that they had an excellent fungicidal effect on plant pathogens, especially Sclerotinia sclerotiorum. Compounds 5-01 and 5-09 had significant fungicidal activity and broad fungicidal spectrum. The structure–activity relationship indicates that the cis configuration, increasing the number of pharmacophores, substitution of the 2 position of the pyridine ring, and the introduction of chlorine atom on the benzene ring were not conducive to the fungicidal activity of such compounds. The model of 3D-QSAR indicated the introduction of large electropositive groups at the 4 position of the benzene ring and the introduction of small electronegative groups at the 2 position of the benzene ring were beneficial to the fungicidal activity, and compounds 6 were designed. Compared with azoxystrobin, compound 6-02 had a more effective fungicidal effect against Sclerotinia sclerotiorum (Lib.) de Bary. Cytotoxicity test and transmission electron microscopy showed that the modification of strobilurins fungicide by the “plug-in molecular” method would not affect its toxicity and mechanism. The “plug-in molecular” method is an efficient method for screening highly active compounds, which has important guiding significance for creating new pesticide molecules. In this study, the “plug-in molecular” method was firstly used to screen new strobilurin fungicides. The results indicated this is a highly efficient screening method for active compounds with guiding significance for the synthesis of new pesticides.![]()
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Affiliation(s)
- Xuelian Liu
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Dongyan Yang
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Fahong Yin
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Jia-Qi Li
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Yumei Xiao
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Bin Fu
- College of Sciences, China Agricultural University Beijing 100193 China
| | - Zhaohai Qin
- College of Sciences, China Agricultural University Beijing 100193 China
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Yang D, Wang H, Fan Z, Li Z, Zhou S, Hao Z, Lv Y, Kalinina TA, Glukhareva TV. Design, synthesis and antifungal activity of (E)-3-acyl-5-(methoxyimino)-1,5-dihydrobenzo[e][1,2]oxazepin-4(3H)-one analogues. Mol Divers 2020; 25:159-169. [PMID: 31965437 DOI: 10.1007/s11030-020-10035-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 01/08/2020] [Indexed: 12/18/2022]
Abstract
Nitrogen- or oxygen-containing organic compounds which have significant antifungal activity, twenty one novel nitrogen or oxygen-containing (E)-3-acyl-5-(methoxyimino)-1,5-dihydrobenzo[e][1,2]oxazepin-4(3H)-one analogues were designed and synthesized, and their structures were confirmed by 1H NMR, 13C NMR and HRMS. Preliminary bioassay showed that most of them exhibited certain-to-good antifungal activity. Compounds 5k-2, 5n, 5p and 5r exhibited over 80% inhibitory rate against Sclerotinia sclerotiorum at 50 μg/mL, and 5r exhibited good antifungal activity against S. sclerotiorum with EC50 of 7.21 μg/mL. Compounds 5a and 5r also showed over 90% inhibition against Botrytis cinerea. In particular, 5r showed significant higher activity with the lowest EC50 of 7.92 μg/mL than the positive control trifloxystrobin (21.96 μg/mL) and azoxystrobin (9.43 μg/mL). Providing a practical method for the synthesis of new scaffolds 1,2-Benzoxazepinone and systematically investigate their antifungal activity.
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Affiliation(s)
- Dongyan Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China
| | - Haixia Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China
| | - Zhijin Fan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China.
| | - Zhengming Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China.
| | - Shuang Zhou
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China
| | - Zesheng Hao
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China
| | - You Lv
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, No. 94, Weijin Road, Nankai District, Tianjin, 300071, People's Republic of China
| | - Tatiana A Kalinina
- The Ural Federal University Named After the First President of Russia B. N. Yeltsin, Ekaterinburg, Russia, 620002
| | - Tatiana V Glukhareva
- The Ural Federal University Named After the First President of Russia B. N. Yeltsin, Ekaterinburg, Russia, 620002.
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Shiva Kumar K, Naikawadi PK, Jatoth R, Dandela R. Bimetallic Cu/Pd-catalyzed three-component azide-alkyne cycloaddition/isocyanide insertion: synthesis of fully decorated tricyclic triazoles. Org Biomol Chem 2019; 17:7320-7324. [PMID: 31343035 DOI: 10.1039/c9ob01175g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The construction of fully decorated 1,2,3-triazole-fused 5-, 6- and 7-membered rings has been disclosed via a bimetallic relay-catalyzed cascade process combining azide-alkyne cycloaddition, C(sp2)-H functionalization of intermediary 1,2,3-triazoles and isocyanide insertion. The salient features of this methodology include simple starting materials, reduced synthetic steps, good substrate scope and high efficiency.
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Affiliation(s)
- K Shiva Kumar
- Department of Chemistry, Osmania University, Hyderabad-500 007, India.
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