Stereoselective synthesis and fungicidal activities of (E)-α-(methoxyimino)-benzeneacetate derivatives containing 1,3,4-oxadiazole ring
作者:Yan Li、Jie Liu、Hongquan Zhang、Xiangping Yang、Zhaojie Liu
DOI:10.1016/j.bmcl.2006.01.026
日期:2006.4
Fifteen novel (E)-alpha-(methoxyimino)-benzeneacetate derivatives, the analogues of strobilurins, which contain two pharmacophoric substructures of (E)-methyl methoxyiminoacetate moiety and 1,3,4-oxadiazole ring were stereoselectively synthesized. It was first found that the coupling reaction could give stereoselectively the key intermediate (E) and (Z)-methyl 2-(hydroxyimino)-2-o-tolylacetate 2 with
立体选择性地合成了十五种新颖的(E)-α-(甲氧基亚氨基)-苯乙酸酯衍生物,它们是嗜球果伞素的类似物,其包含(E)-甲氧基亚氨基乙酸甲酯部分和1,3,4-恶二唑环的两个药效学亚结构。首先发现偶联反应可以以14:1的比例立体选择性地产生关键中间体(E)和2-(羟基亚氨基)-2-邻甲苯基乙酸酯(Z)-甲基。初步的生物测定表明,所有化合物1对茄根霉,灰葡萄孢,玉米赤霉菌,皮氏假单胞菌和双极性芽孢杆菌均显示出有效的杀真菌活性,并且所有测试化合物1a-1o均比Kresoxim-具有更强的对茄霉的杀真菌活性。甲基。