Synthesis of 3,4-dihydroisoquinolin-1(2<i>H</i>)-one derivatives and their antioomycete activity against the phytopathogen <i>Pythium recalcitrans</i>
作者:Delong Wang、Min Li、Jing Li、Yali Fang、Zhijia Zhang
DOI:10.1039/d3ra00855j
日期:——
effort to exploit the bioactive natural scaffold 3,4-dihydroisoquinolin-1(2H)-one for plant disease management, 59 derivatives of this scaffold were synthesized using the Castagnoli–Cushman reaction. The results of bioassay indicated that their antioomycete activity against Pythium recalcitrans was superior to the antifungal activity against the other 6 phytopathogens. Compound I23 showed the highest in
为了开发具有生物活性的天然支架 3,4-二氢异喹啉-1(2 H )-one 用于植物病害防治,使用 Castagnoli-Cushman 反应合成了该支架的 59 种衍生物。生物测定结果表明,它们对Pythium recalcitrans 的抗卵菌活性优于对其他6 种植物病原体的抗真菌活性。化合物I23显示出最高的体外对抗P. recalcitrans 的效力,其 EC 50值为 14 μM,高于商品恶霉唑 (37.7 μM)。此外,I23在体内表现出在 2.0 毫克/罐的剂量下,预防效果为 75.4%,与恶霉唑处理 (63.9%) 相比没有显着差异。当剂量为每盆5.0毫克时,I23达到96.5%的预防效果。生理生化分析、超微结构观察和脂质组学分析结果表明I23的作用方式可能是破坏P. recalcitrans的生物膜系统. 此外,在三维定量构效关系(3D-QSAR)研究中建立的具有合理统