Design and Synthesis of Novel 4-Hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one Derivatives for Use as Herbicides and Evaluation of Their Mode of Action
作者:Kang Lei、Pan Li、Xue-Fang Yang、Shi-Ben Wang、Xue-Kun Wang、Xue-Wen Hua、Bin Sun、Lu-Sha Ji、Xiao-Hua Xu
DOI:10.1021/acs.jafc.9b03109
日期:2019.9.18
its great potential as a herbicide. More importantly, studying the molecular mode of action of compound II15 revealed that the novel triketone structure is a proherbicide of its corresponding phenoxyacetic acid auxin herbicide, which has a herbicidal mechanism similar to that of 2,4-D. The present work indicates that the 4-hydroxyl-3-(2-phenoxyacetyl)-pyran-2-one motif may be a potential lead structure
为了开发含有β-三酮基序的新型除草剂,设计并合成了一系列4-羟基-3-(2-苯氧基乙酰基)-吡喃-2-酮衍生物。生物测定结果表明,即使剂量为187.5 g ha –1,化合物II15也具有良好的芽前除草活性。此外,与商业除草剂2,4-二氯苯氧基乙酸(2,4-D)相比,化合物II15的杂草控制范围更广,并且对小麦和玉米具有良好的农作物安全性。当以375 g ha –1施用时在出苗前的条件下,表明其作为除草剂的巨大潜力。更重要的是,研究化合物II15的分子作用方式表明,新的三酮结构是其相应的苯氧乙酸生长素除草剂的除草剂,其除草机理与2,4-D相似。目前的工作表明4-羟基-3-(2-苯氧基乙酰基)-吡喃-2-酮基序可能是潜在的铅结构,用于进一步开发新型的生长素型除草剂。