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- Title
Synthesis, Antifungal Activity and QSAR of Some Novel Carboxylic Acid Amides.
- Authors
Shijie Du; Huizhe Lu; Dongyan Yang; Hong Li; Xilin Gu; Chuan Wan; Changqing Jia; Mian Wang; Xiuyun Li; Zhaohai Qin
- Abstract
A series of novel aromatic carboxylic acid amides were synthesized and tested for their activities against six phytopathogenic fungi by an in vitro mycelia growth inhibition assay. Most of them displayed moderate to good activity. Among them N-(2-(1H-indazol-1- yl)phenyl)-2-(trifluoromethyl)benzamide (3c) exhibited the highest antifungal activity against Pythium aphanidermatum (EC50 = 16.75 μg/mL) and Rhizoctonia solani (EC50 = 19.19 μg/mL), compared to the reference compound boscalid with EC50 values of 10.68 and 14.47 μg/mL, respectively. Comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were employed to develop a three-dimensional quantitative structure-activity relationship model for the activity of the compounds. In the molecular docking, a fluorine atom and the carbonyl oxygen atom of 3c formed hydrogen bonds toward the hydroxyl hydrogens of TYR58 and TRP173.
- Subjects
CARBOXYLIC acids; COMPARATIVE molecular field analysis; AMINO acid amides; PHYTOPATHOGENIC fungi; TRIFLUOROMETHYL compounds; BENZAMIDE; PYTHIUM aphanidermatum
- Publication
Molecules, 2015, Vol 20, Issue 3, p4071
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules20034071