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Synthesis, Crystal Structure, Spectral Characterization and Antifungal Activity of Novel Phenolic Acid Triazole Derivatives.

ABSTRACT: At present, phenolic acid derivatives and triazole derivatives have a good antifungal effect, which has attracted widespread attention. A series of novel phenolic acid triazole derivatives were synthesized, and their structures were characterized by IR, MS, NMR, and X-ray crystal diffraction. Compound methyl 4-(2-bromoethoxy)benzoate, methyl 4-(2-(1H-1,2,4-triazol-1-yl) ethoxy)benzoate, 4-(2-(1H-1,2,4-triazol-1-yl)ethoxy)benzoic acid and 4-(2-(1H-1,2,4-triazol-1-yl) ethoxy)-3-methoxybenzoic acid crystallize in the monoclinic system with space group P2₁/n, the monoclinic system with space group P2₁, the monoclinic system with space group P2₁ and the orthorhombic system with space group Pca2₁, respectively. At a concentration of 100 μg/mL and 200 μg/mL, the antifungal activity against seven plant pathogen fungi was determined. Compound methyl 4-(2-bromoethoxy)benzoate has the best inhibitory effect on Rhizoctonia solani AG1, and the inhibitory rate reached 88.6% at 200 μg/mL. The inhibitory rates of compound methyl 4-(2-(1H-1,2,4-triazol-1-yl) ethoxy)benzoate against Fusarium moniliforme and Sphaeropsis sapinea at a concentration of 200 μg/mL were 76.1% and 75.4%, respectively, which were better than that of carbendazim.

SUBMITTER: Xiao PL

PROVIDER: S-EPMC10574244 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature

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Synthesis, Crystal Structure, Spectral Characterization and Antifungal Activity of Novel Phenolic Acid Triazole Derivatives.

Xiao Pan-Lei PL Song Xiu-Ying XY Xiong Xin-Ting XT Peng Da-Yong DY Nie Xu-Liang XL

Molecules (Basel, Switzerland) 20231007 19

At present, phenolic acid derivatives and triazole derivatives have a good antifungal effect, which has attracted widespread attention. A series of novel phenolic acid triazole derivatives were synthesized, and their structures were characterized by IR, MS, NMR, and X-ray crystal diffraction. Compound methyl 4-(2-bromoethoxy)benzoate, methyl 4-(2-(1H-1,2,4-triazol-1-yl) ethoxy)benzoate, 4-(2-(1H-1,2,4-triazol-1-yl)ethoxy)benzoic acid and 4-(2-(1H-1,2,4-triazol-1-yl) ethoxy)- ...[more]

PMID: 37836812

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Project description:BackgroundPlant fungi (e.g., Pellicularia sasakii, Gibberella zeae, Fusarium oxysporum, and Cytospora mandshurica and Phytophthora infestans) and bacteria (e.g., Ralstonia solanacearum) are extremely difficult to manage in agricultural production. The high incidence of plant mortality and the lack of effective control methods make P. sasakii and R. solanacearum two of the world's most destructive plant pathogens. Pathogenic fungi and bacteria are responsible for billions of dollars in economic losses worldwide each year. Thus, we designed an active amide structure and synthesized a series of novel amide derivatives containing a triazole moiety to discover new bioactive molecules and pesticides that can act against fungi and bacteria.ResultsA series of amide derivatives containing a triazole moiety were synthesized. All the obtained compounds were characterized through proton and carbon nuclear magnetic resonance spectroscopy, infrared spectroscopy, and elemental analysis. Preliminary antifungal activity test showed that some of the synthesized compounds exhibited moderate antifungal activity against P. sasakii, G. azeae, F. oxysporum, C. mandshurica, and P. infestans at 50 mg/L. Compound 4u displayed more potent antifungal activity against P. sasakii and G. azeae than hymexazol. Preliminary antibacterial activity results showed that some of the synthesized compounds exhibited high anti-bacterial activity against R. solanacearum at 200 mg/L. Compounds 4m and 4q displayed high antibacterial activity against R. solanacearum, with 71% and 65% inhibitory rates, respectively.ConclusionsA series of novel amide derivatives containing 1,2,4-triazole moiety were synthesized through the reaction of intermediate 3 with different acyl chlorides and anhydrous potassium carbonates in anhydrous tetrahydrofuran at 50°C, using 2,4-dichloroacetophenoneas as a starting material. The title compounds exhibited high inhibitory effects against P. sasakii, R. solanacearum, and G. azeae.

Dataset Information

Synthesis, Crystal Structure, Spectral Characterization and Antifungal Activity of Novel Phenolic Acid Triazole Derivatives.

Publications

Synthesis, Crystal Structure, Spectral Characterization and Antifungal Activity of Novel Phenolic Acid Triazole Derivatives.

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