scholarly journals Synthesis, Characterisation and Antifungal Activities of Some New Copper(II) Complexes of Isomeric 3,5,7,7,10,12,14,14-Octamethyl-1,4,8,11-Tetraazacyclotetradecanes

1997 ◽  
Vol 4 (5) ◽  
pp. 255-265 ◽  
Author(s):  
Saroj K. S. Hazari ◽  
Tapashi G. Roy ◽  
Benu K. Dey ◽  
Suvash C. Das ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structure ◽  
Antifungal Activity ◽  
Phytopathogenic Fungi ◽  
Antifungal Activities ◽  
X Ray ◽  
Conductance Data

Three isomeric Me8[14]anes, LA, LB and LC, undergo complexation with copper(II) salts to form a series of [CuLXn(H2O)x]Xy.(H2O)z complexes where L = LA, LB and LC; X = Cl, Br, NO3; n, x, y and z may have values of 0, 1 or 2. The complexes have been characterised on the basis of analytical, spectroscopic, magnetic and conductance data. Further, the X-ray crystal structure of one complex, [CuLB(OH2)2](NO3)2, has been determined. The antifungal activity of all three isomeric ligands and their complexes has been investigated against a range of phytopathogenic fungi.

scholarly journals Axial Addition in Diastereoisomeric [Ni(Me8[14]ane)](ClO4)2 Complexes and Their Antifungal Activities

2021 ◽  
Vol 41 (1) ◽  
pp. 122-147
Author(s):  
D Palit ◽  
L Dey ◽  
S Rabi ◽  
S Roy ◽  
A Alam ◽  
...  
Keyword(s):  
Phytopathogenic Fungi ◽  
Axial Ligand ◽  
Addition Reactions ◽  
Antifungal Activities ◽  
Conductance Data ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Ligand Addition

A series of diastereoisomeric square planar nickel(II) diperchlorate complexes, [Ni(L)](ClO4)2{L= isomeric Me8[14]ane (LAα, LBα or LCα)}undergo axial ligand addition reactions with NO3-, Cl-, Br-, SCN- or ClO4- to yield six coordinate octahedral derivatives [NiL(X)x(Y)y].z(H2O)(X=NO3,Cl, Br or SCN; Y= ClO4; x = 1 or 2; y = 1 or 0 and z = 0, 1 or 2). The products have been characterized on the basis of analytical, spectroscopic, magnetic and conductance data. All the derivatives are unstable in open air except one derivative and revert back to original square planar complexes. Antifungal activities of the ligands and their nickel(II) complexes  have been investigated against some phytopathogenic fungi. The Chittagong Univ. J. Sci. 40(1) : 122-147, 2019

Synthesis and Antifungal Activities of Some 2,6-Bis-(Un)Substituted Phenoxymethylpyridines

2010 ◽  
Vol 65 (7-8) ◽  
pp. 433-436
Author(s):  
Hui Xu ◽  
Huan Qu
Keyword(s):  
Antifungal Activity ◽  
Fusarium Oxysporum ◽  
Fusarium Graminearum ◽  
Broad Spectrum ◽  
Alternaria Alternata ◽  
Phytopathogenic Fungi ◽  
Alternaria Brassicae ◽  
Antifungal Activities

Several 2,6-bis-(un)substituted phenoxymethylpyridines were synthesized and evaluated in vitro against Fusarium graminearum, Helminthosporium sorokinianum, Alternaria brassicae, Alternaria alternata, and Fusarium oxysporum f. sp. vasinfectum. Among all derivatives, compound 3 a exhibited a broad-spectrum antifungal activity against the five phytopathogenic fungi.

scholarly journals Synthesis, crystal structure and antifungal activity of dihydroisoquinoline Oxaziridines Substitued in Position 1

2014 ◽  
Vol 10 (4) ◽  
pp. 2551-2557 ◽  
Author(s):  
Mouna Bouzid ◽  
Raed Abdennabi ◽  
Chakib Hrizi ◽  
Neji Gharsallah ◽  
Majed Kammoun
Keyword(s):  
Crystal Structure ◽  
Antifungal Activity ◽  
Nitro Group ◽  
Oxidizing Agent ◽  
X Ray ◽  
X Ray Crystallography

We report here the synthesis and the X-ray crystallography of dihydroisoquinoline oxaziridines with methyl substitute in position 1 and with nitro group in position 7 (compound 3b). We also synthesized the compound 3a without nitro. These compounds have been prepared by the peracidic oxidation of imines with m-chloroperbenzoic (m-CPBA) like oxidizing agent. This two compounds exhibit higher antifungal activity.

scholarly journals Antifungal Activity of β-Pinene-Based Hydronopyl Quaternary Ammonium Salts Against Phytopathogenic Fungi

2020 ◽  
Vol 15 (8) ◽  
pp. 1934578X2094836
Author(s):  
Xue Zhen Feng ◽  
Zhuanquan Xiao ◽  
Li Zhang ◽  
Shengliang Liao ◽  
Shangxing Chen ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Plant Pathogens ◽  
Value Added ◽  
Structure Activity Relationship ◽  
Phytopathogenic Fungi ◽  
Activity Relationship ◽  
Resonance Spectroscopy ◽  
Antifungal Activities ◽  
Structure Activity ◽  
Diethyl Ammonium

β-Pinene can be used as a cheap source to synthesize a large number of high value-added derivatives. In this study, a series of β-pinene derivatives was prepared, and the antifungal activities of the compounds were assessed against phytopathogenic fungi. Eight N-alkyl hydronopyl diethyl ammonium halide salts were synthesized by the reaction of hydronopyl diethyl ammonium halide with 8 halogenated alkanes. The structures of the synthesized products were characterized by Fourier-transform infrared spectroscopy and nuclear magnetic resonance spectroscopy and mass spectrometry. The antifungal activities of these derivatives were tested against 11 plant pathogens, and the preliminary structure-activity relationship is discussed. Some derivatives exhibited moderate to significant antifungal activity due to the fusion of the hydronopyl, a long-chain alkyl, bromine, and iodine anionic groups. In contrast to the structure-activity relationship of compounds 2a, 2b, and 2c, iodine ions in 2f, 2g, and 2f had a significant effect on enhancing the antifungal activity against Colletotrichum gloeosporioides, S clerotinia sclerotiorum, Phytophthora capsici, Phomopsis, Sphaeropsis sapinea, Glomerella cingulata, and Fusicoccum aesculi. A higher molecular weight could increase the antifungal activity against Fusarium proliferatum, Alternaria kikuchiana, Sclerotinia sclerotiorum, P. capsici, Phomopsis, and S. sapinea. Compounds 2d and 2e exhibited broad-spectrum antifungal activity against the tested strains. These derivatives are expected to be used as precursor molecules for novel pesticide development in further research.

Studies via X-ray analysis on intermolecular interactions and energy frameworks based on the effects of substituents of three 4-aryl-2-methyl-1H-imidazoles of different electronic nature and their in vitro antifungal evaluation

2018 ◽  
Vol 74 (11) ◽  
pp. 1447-1458 ◽  
Author(s):  
Mario A. Macías ◽  
Nerith-Rocio Elejalde ◽  
Estefanía Butassi ◽  
Susana Zacchino ◽  
Jaime Portilla
Keyword(s):  
Crystal Structure ◽  
Antifungal Activity ◽  
Crystal Structures ◽  
Intermolecular Interactions ◽  
Acid Base ◽  
Electronic Nature ◽  
Aryl Ring ◽  
X Ray ◽  
Base Properties

The crystal structures of 2-methyl-4-phenyl-1H-imidazole, C10H10N2, (3a), 4-(4-chlorophenyl)-2-methyl-1H-imidazole hemihydrate, C10H9ClN2·0.5H2O, (3b), and 4-(4-methoxyphenyl)-2-methyl-1H-imidazole, C11H12N2O, (3c), have been analyzed. It was found that the electron-donating/withdrawing tendency of the substituent groups in the aryl ring influence the acid–base properties of the 2-methylimidazole nucleus, changing the strength of the intermolecular N—H...N interactions. This behaviour not only influences the crystal structure but also seems to have an important effect on the antifungal activity. Considering the substituent groups, that is, H in (3a), Cl in (3b) and OMe in (3c), the formation of strong N—H...N connections has the probability (3a) > (3b) > (3c), while compound (3c) proves to be more active than (3a) and (3b) at all concentrations against C. neoformans.

Synthesis and antifungal activities of novel polyheterocyclic spirooxindole derivatives

2015 ◽  
Vol 13 (17) ◽  
pp. 4967-4975 ◽  
Author(s):  
Jia-Shou Wu ◽  
Xue Zhang ◽  
Ying-Lao Zhang ◽  
Jian-Wu Xie
Keyword(s):  
Antifungal Activity ◽  
Phytopathogenic Fungi ◽  
Antifungal Activities ◽  
Mild Conditions ◽  
Michael Reactions ◽  
Antifungal Effects

A series of spirooxindole tetrahydrofuran derivatives were obtained in moderate to good yields via base-mediated cascade [3+2] double Michael reactions under mild conditions. Their antifungal effects on selected five target phytopathogenic fungi were investigated, and their structure antifungal activity relationships were also discussed.

A new CoIIcomplex of diniconazole: synthesis, crystal structure and antifungal activity

2015 ◽  
Vol 71 (10) ◽  
pp. 889-893 ◽  
Author(s):  
Teng Xi ◽  
Jie Li ◽  
Biao Yan ◽  
Mingyan Yang ◽  
Jirong Song ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Antifungal Activity ◽  
Water Molecules ◽  
Dimensional Chain ◽  
X Ray Diffraction ◽  
Octahedral Structure ◽  
One Dimensional ◽  
X Ray ◽  
Solvent Water ◽  
Crystal Structural

A new CoIIcomplex of diniconazole, namely diaqua[(E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl-κN4)pent-1-en-3-ol]cobalt(II) dinitrate dihydrate, [Co(C15H17Cl2N3O)3(H2O)2](NO3)2·2H2O, was synthesized and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal structural analysis shows that the centrosymmetric CoIIcation is coordinated by four diniconazole ligands and two water molecules, forming a six-coordinated octahedral structure. There are also two free nitrate counter-anions and two additional solvent water molecules in the structure. Intermolecular O—H...O hydrogen bonds link the complex cations into a one-dimensional chain. In addition, the antifungal activity of the complex againstBotryosphaeria ribis,Gibberella nicotiancola,Botryosphaeria berengrianaandAlternariasolaniwas studied. The results indicate that the complex shows a higher antifungal activity forBotryosphaeria ribisandBotryosphaeria berengrianathan diniconazole, but a lower antifungal activity forGibberella nicotiancolaandAlternariasolani.

scholarly journals Síntesis de nanopartículas de cobre para el control de hongos fitopatógenos

2018 ◽  
pp. 109-116
Keyword(s):  
Antifungal Activity ◽  
Fusarium Oxysporum ◽  
Fusarium Solani ◽  
Agricultural Sector ◽  
Low Cost ◽  
Fusarium Verticillioides ◽  
Phytopathogenic Fungi ◽  
X Ray Diffraction ◽  
Antifungal Effect ◽  
X Ray

Síntesis de nanopartículas de cobre para el control de hongos fitopatógenos Nicolaza Pariona1, L. A. Hermida-Montero1, Arturo I. Mtz-Enriquez2, D. Sánchez-Rangel1,3, Gloria Carrión1, Daniel Lopez-Lima1, Greta Rosas-Saito1, Benjamin Rodriguez-Hass1 y Zelene Duran-Barradas1. 1 Red de Estudios Moleculares Avanzados, Instituto de Ecología A.C., Carretera Antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, México. 2 Centro de Investigación y de Estudios Avanzados del IPN Unidad Saltillo, Av. Industria Metalúrgica 1062, Parque Industrial Ramos Arizpe, 25900 Coahuila, México 3 Cátedra CONACYT en el Instituto de Ecología A.C., 91070 Xalapa, Veracruz, México. Recibido 11 de noviembre del 2018, Revisado el 12 de diciembre de 2018. Aceptado el 14 de diciembre de 2018 DOI: https://doi.org/10.33017/RevECIPeru2018.0017/ Resumen Los hongos fitopatógenos son uno de los mayores problemas que afecta al sector agrícola, causando pérdidas que sobrepasan miles de millones de dólares al año. Aunado a esto, la resistencia antifúngica dificulta el control de los hongos fitopatógenos y es necesario encontrar alternativas de control de bajo costo y no contaminen el ambiente. Por lo anterior, el objetivo principal de este proyecto fue sintetizar nanopartículas de cobre (NPs-Cu) y evaluar su actividad antifúngica contra diferentes hongos fitopatógenos. Las NPs-Cu se sintetizaron por el método de reducción y se caracterizaron mediante la técnica de Difracción de Rayos X (DRX) y Microscopía Electrónica de Barrido (MEB). La evaluación de actividad antifúngica de las NPs-Cu se realizaron contra cinco especies de hongos fitopatógenos (Fusarium solani, Fusarium verticillioides, Verticillium dahlie, Neofusicoccum sp. y Fusarium oxysporum). Los resultados demostraron que el efecto antifúngico de las NPs-Cu depende de la concentración utilizada y especie de hongo. Por lo tanto, las NPs-Cu obtenidas tienen potencial aplicación el control de agentes fitopatógenos. Descriptores: Nanopartículas, antifúngicos, Fusarium Abstract Phytopathogenic fungi are one of the biggest problems affecting the agricultural sector, causing losses that exceed billions of dollars per year. In addition to this, antifungal resistance hinders the control of phytopathogenic fungi and it is necessary to find control alternatives of low cost that do not contaminate the environment. Therefore, the main objective of this project was to synthesize copper nanoparticles (NPs-Cu) and evaluate their antifungal activity against different phytopathogenic fungi. NPs-Cu were synthesized by the reduction method and characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The antifungal activity evaluation of the NPs-Cu was carried out against five species of phytopathogenic fungi (Fusarium solani, Fusarium verticillioides, Verticillium dahlie, Neofusicoccum sp, and Fusarium oxysporum). The results showed that the antifungal effect of NPs-Cu depends on the concentration used and species of fungus. Therefore, the NPs-Cu obtained have potential application to control phytopathogenic agents. Keywords: Nanoparticles, antifungal, Fusarium.

Synthesis and Antifungal Activities of 2-(N-Arylsulfonylindol-3-yl)-3-aryl-1,3-thiazinan-4-ones

2013 ◽  
Vol 68 (3-4) ◽  
pp. 77-81 ◽  
Author(s):  
Huan Qu ◽  
Rui Zhang ◽  
Ying Hu ◽  
Yazhen Ke ◽  
Zhinan Gao ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Fusarium Graminearum ◽  
Alternaria Alternata ◽  
Alternaria Solani ◽  
Phytopathogenic Fungi ◽  
Pyricularia Oryzae ◽  
Alternaria Brassicae ◽  
Antifungal Activities ◽  
Valsa Mali

4j A series of 2-(N-arylsulfonylindol-3-yl)-3-aryl-1,3-thiazinan-4-one derivatives were synthesized and evaluated in vitro against seven phytopathogenic fungi, namely Fusarium graminearum, Alternaria solani, Fusarium oxysporium f. sp. vasinfectum, Alternaria brassicae, Valsa mali, Alternaria alternata, and Pyricularia oryzae. Among all derivatives, especially compound exhibited a potential antifungal activity against four phytopathogenic fungi.

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