Design, synthesis and mechanism study of novel natural-derived isoquinoline derivatives as antifungal agents
作者:Wei Chen、Rui Zhang、Yang Chen、Pingbing Yu、Yuxin Lan、Haojian Xu、Simin Lei
DOI:10.1007/s11030-022-10463-z
日期:——
dehydrogenase than 8f. 9f could be used as a novel antifungal lead compound for further study. Graphical abstract Two series of novel isoquinoline derivatives 8, 9 containing 3-aryl were rational designed and synthesized based on quaternary isoquinoline alkaloids. The bioassay and interaction mechanism studies indicated that 9f should be considered as potential antifungal lead.
在天然杀菌先导化合物的筛选中,以血根碱、白屈菜红碱和小檗碱为基础,设计合成了两个系列的新型3-芳基异喹啉衍生物8和9 。它们的结构通过一维、二维核磁共振和高分辨质谱得到证实。大多数标题化合物在 50 mg/L 浓度下表现出中等至优异的体外抗真菌活性,其活性比先导血根碱高得多。其中,9f对茄病链格孢(80.4%)、链格孢(88.2%)和梨轮纹孢(93.8%)的效果最好。此外, 9f (3.651 mg/L) 对P. piricola的EC 50略好于百菌清 (3.869 mg/L)。在苹果上研究了9f对P. piricola的体内抗真菌活性。50和100mg/L剂量的治疗和保护效果分别为70.45~81.67%和64.96~80.34%,与百菌清的80.30~86.67%、73.08~76.92%相当。分子静电势和分子对接分析表明,9f被正电位轮廓完全覆盖,比8f更容易与琥珀酸脱氢酶的负氨基