Eight compounds were isolated from the aerial parts of Chuanminshen violaceum Sheh et Shan. Seven of them were elucidated as 4 hydroxymethyl 5 methoxycarbonylethyl 6 methoxy benzofuran 7 O β D glucoside(1), 6 methoxy...Eight compounds were isolated from the aerial parts of Chuanminshen violaceum Sheh et Shan. Seven of them were elucidated as 4 hydroxymethyl 5 methoxycarbonylethyl 6 methoxy benzofuran 7 O β D glucoside(1), 6 methoxymellein(2), isopimpinellin(3), byakangelicin(4), oxypeucedanin hydrate(5), rutaretin(6) and rutin(7) by spectral evidence. Compound 1 is a novel 4,5,6,7 tetrasubstituted benzofuran compound isolated from natural origins and named chuanminshenoside.展开更多
S trobilurin类杀菌剂是在具有杀菌活性的天然β-甲氧基丙烯酸酯衍生物的基础上研发出来的,具有广谱、高效、安全的特点。主要以粘噻唑为例综述了该类杀菌剂作用靶标及作用位点的研究过程及最新进展。生化作用机理的研究明确了粘噻唑作...S trobilurin类杀菌剂是在具有杀菌活性的天然β-甲氧基丙烯酸酯衍生物的基础上研发出来的,具有广谱、高效、安全的特点。主要以粘噻唑为例综述了该类杀菌剂作用靶标及作用位点的研究过程及最新进展。生化作用机理的研究明确了粘噻唑作用于线粒体呼吸链bc1复合物中的细胞色素b及铁硫蛋白,阻止了从细胞色素b到细胞色素c1的电子传递,从而抑制线粒体的呼吸作用;蛋白质晶体学研究明确了粘噻唑的作用位点(Qo位点)是通过氢键与铁硫蛋白及细胞色素b的残基结合的。其他strobilurin类杀菌剂和粘噻唑具有相同的靶标,但由于各化合物之间存在一定的结构差异,其具体作用位点亦有一定的差别。展开更多
文摘Eight compounds were isolated from the aerial parts of Chuanminshen violaceum Sheh et Shan. Seven of them were elucidated as 4 hydroxymethyl 5 methoxycarbonylethyl 6 methoxy benzofuran 7 O β D glucoside(1), 6 methoxymellein(2), isopimpinellin(3), byakangelicin(4), oxypeucedanin hydrate(5), rutaretin(6) and rutin(7) by spectral evidence. Compound 1 is a novel 4,5,6,7 tetrasubstituted benzofuran compound isolated from natural origins and named chuanminshenoside.
