Microwave-assisted synthesis and antifungal activity of novel fused Osthole derivatives
作者:Ming-Zhi Zhang、Rong-Rong Zhang、Jia-Qun Wang、Xiang Yu、Ya-Ling Zhang、Qing-Qing Wang、Wei-Hua Zhang
DOI:10.1016/j.ejmech.2016.08.012
日期:2016.11
the microwave-assisted synthetic protocol developed in our previous work, we have synthesized a series of novel furo[3,2-c]coumarins as fused Osthole derivatives, via the reaction of 4-hydroxycoumarins and β-ketoesters catalyzed by DMAP. All the target compounds were evaluated in vitro for their antifungal activity against six phytopathogenic fungi, some compounds exhibited potential activity in the
基于我们先前工作中开发的微波辅助合成方案,我们通过DMAP催化的4-羟基香豆素与β-酮酸酯的反应,合成了一系列新型的呋喃并[3,2- c ]香豆素作为稠合的Osthole衍生物。体外评估了所有目标化合物对六种植物病原真菌的抗真菌活性,其中一些化合物在主要试验中表现出潜在的活性。尤其是化合物6c,7b,8b和8c(如图1所示)是活性最高的化合物,这四种化合物对辣椒炭疽菌,灰葡萄孢的EC 50值进一步研究了茄子和根瘤菌。6c被确定为最有前途的候选物,对灰葡萄孢的EC 50值为0.110μM,对辣椒炭疽菌的EC 50值分别为0.040μM,与常规杀真菌剂Azoxystrobin相比具有更好的抗真菌活性。