AI Article Synopsis
- - A series of novel thiourea compounds, designed using a sulfonylurea bridge, showed promising herbicidal activity against specific weeds like Digitaria adscendens and Amaranthus retroflexus, particularly compounds 4d and 4f.
- - Compound 4d inhibited root growth of Brassica napus L. by 81.5%, while compound 4f inhibited root growth of Digitaria adscendens by 81%, outperforming the commercial herbicide bensulfuron-methyl against Echinochloa crus-galli.
- - All tested compounds inhibited the AHAS enzyme, with compound 4d having the highest inhibition rate of 44.4%, and molecular docking
Article Abstract
According to the pharmacophore binding strategy and principle of bioelectronic isobaric, used the sulfonylurea bridge as the parent structure, a series of novel thiourea compounds containing aromatic-substituted pyrimidines were designed and synthesized. The preliminary herbicidal activity tests showed that some compounds had good herbicidal activity against Digitaria adscendens, Amaranthus retroflexus, especially for compound 4d and 4f. The results showed that compound 4d had an inhibition rate of 81.5% on the root growth of Brassica napus L. at the concentration of 100 mg L, and compound 4f had an inhibition rate of 81% on the root growth of Digitaria adscendens at the concentration of 100 mg L. Compounds 4d and 4f had higher comparative activity on Echinochloa crus-galli than the commercial herbicide bensulfuron-methyl. The preliminary structure-activity relationship (SAR) was also summarized. We also tested the in vivo AHAS enzyme activity inhibition experiment of 14 compounds at 100 mg L, and the results showed that they all have inhibitory activity on the enzyme, with the highest inhibition rate reaching 44.4% (compound 4d). Based on the results of molecular docking to yeast acetohydroxyacid synthase (AHAS), the possible herbicidal activity mechanism of these compounds was evaluated.
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| http://dx.doi.org/10.1016/j.pestbp.2020.104766 | DOI Listing |
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