期刊论文

Wang Dawei

中文

化学学报

0567-7351

2015

73

1

29-35

10.6023/A14110805

National Key Technologies R&D Program of ChinaNational Key Technology R&D Program [2011BAE06B03]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21372093, 21172091]

本校为第一且通讯机构

对羟苯基丙酮酸双氧化酶(EC 1.13.11.27,HPPD)是一个重要的除草剂作用靶标.为了寻找具有高效除草活性的新型HPPD抑制剂,在前期研究的基础上设计合成了24个含有喹唑啉二酮结构的三酮类化合物9a~9x.所合成的化合物均经过~1H NMR,~(13)C NMR和HRMS的表征.以来源于拟南芥的HPPD(At HPPD)为测试对象进行酶抑制活性筛选,结果表明所合成的大部分化合物对At HPPD均表现出了较好的抑制效果,其中化合物9i的K_i值为0.005μmol/L,显著优于商品化对照药剂硝磺草酮(K_i=0.013μmol/L).进一步温室盆栽筛选结果表明,多数化合物在150 g ai/ha的剂量下对六种供试杂草中的至少一种表现出80%以上的防效,特别是化合物...

4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) is an important enzyme in the catabolism of tyrosine, catalyzing the conversion of 4-hydroxyphenyl pyruvic acid (HPPA) into homogentisic acid (HGA), belonging to the 2-his-1-carboxylate facial triad family of non-heme iron(II) enzymes. As an important enzyme in regulating the biosynthesis of tocopherols and plastoquinone in plants, HPPD is an important target for herbicides discovery. Previously, we have found that triketone-containing quinazoline-2,4-dione motif can be used as a novel l...