Design, synthesis and herbicidal activity study of aryl 2,6-disubstituted sulfonylureas as potent acetohydroxyacid synthase inhibitors
作者:Wei Wei、Shaa Zhou、Dandan Cheng、Yuxin Li、Jingbo Liu、Yongtao Xie、Yonghong Li、Zhengming Li
DOI:10.1016/j.bmcl.2017.06.007
日期:2017.8
for their herbicidal activities. Most of these compounds showed excellent inhibitory rates against both monocotyledonous and dicotyledonous weeds, especially 10a, 10h and 10i. They exhibited equivalent or superior herbicidal efficiency than commercial chlorsulfuron at the dosage of 15 g/ha and the preliminary SAR was summarized. In order to illuminate the molecular mechanism of several potent compounds
设计,合成和评估了一系列含有2,6-二取代的芳基部分的磺酰脲衍生物的除草活性。这些化合物中的大多数对单子叶和双子叶杂草均表现出优异的抑制率,尤其是10a,10h和10i。在15 g / ha的剂量下,它们表现出与商业氯磺隆同等或更高的除草效率,并总结了初步的SAR。为了阐明几种有效化合物的分子机理,拟南芥的表观抑制常数(K i app)测定了乙酰羟酸合酶(AHAS),结果证实这些化合物均为有效的AHAS抑制剂。10i的K i app为11.5 nM,约为氯磺隆(52.4 nM)的4倍。