Chinese Journal of Organic Chemistry >
Design, Synthesis, Fungicidal Activity and Molecular Docking Study of Novel 2-(1-Methyl-1H-pyrazol-4-yl)pyrimidine-4-carboxamides
Received date: 2022-06-07
Revised date: 2022-07-11
Online published: 2022-09-02
Supported by
Natural Science Foundation of Shandong Province(ZR2020MB110)
Abstract In order to develop novel pyrimidine fungicides, thirteen 2-(1-methyl-1H-pyrazol-4-yl) pyrimidine-4-carboxami- des were synthesized from 2-chloropyrimidine-4-carboxylic acid, 1-methyl-4-pyrazole borate pinacol ester, substituted anilines or substituted benzylamines as starting materials. The structures of target compounds were characterized by 1H NMR, 13C NMR, IR, HRMS, and the crystal structure of N-benzyl-2-(1-methyl-1H-pyrazol-4-yl)pyrimidine-4-carboxamide (4h) was also determined by X-ray diffraction method. The preliminary fungicidal activities against three plant fungi were evaluated, and the results showed that at a dosage of 100 mg/L, N-(4-methyl)phenyl-2-(1-methyl-1H-pyrazol-4-yl)pyrimidine-4-carboxamide (4f) and N-(4-chlorobenzyl)-2-(1-methyl-1H-pyrazol-4-yl)pyrimidine-4-carboxamide (4j) possessed relatively high activities against Rhizoctonia solani with inhibitory rates of 85.3% and 79.1%, respectively. Molecular docking study showed that 4f can form two hydrogen bonds and one cation-π interaction with succinate dehydrogenase.
Changxing Sun , Fuhao Zhang , Huan Zhang , Penghui Li , Lin Jiang . Design, Synthesis, Fungicidal Activity and Molecular Docking Study of Novel 2-(1-Methyl-1H-pyrazol-4-yl)pyrimidine-4-carboxamides[J]. Chinese Journal of Organic Chemistry, 2023 , 43(1) : 229 -235 . DOI: 10.6023/cjoc202206008
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