The one-pot total synthesis of evodiamine and itsanalogues is achieved using a three-component reaction. Through continuous biscyclization, various readily available substrates with good functional group tolerance were easily incorporated into biologically active quinazolinocarboline backbones. The use of triethoxymethane as a cosolvent was crucial for this quick and straightforward transformation
Synthesis of evodiamine and its derivatives through a visible-light-driven intramolecular C N cross-coupling reaction
作者:Linfeng Zhang、Dong Chen、Chao Zhou、Yutong Yin、Guixia Wang、Qiping Zhu、Shiqing Li、Xiangfei Kong
DOI:10.1016/j.tetlet.2022.154305
日期:2023.1
A visible-light-initiated CNcross-coupling reaction is described, featuring metal-free and photocatalyst-free, at ambient temperature, with air as the oxidant and pinacolborane as the reducing agent. The substrates with electron-withdrawing groups give higher yields than those with electron-donating groups, but the substituent position has a negligible influence on yields. Moreover, DFT calculations
描述了一种可见光引发的 C N交叉偶联反应,其特点是无金属和无光催化剂,在环境温度下,以空气为氧化剂,频哪醇硼烷为还原剂。具有吸电子基团的底物比具有给电子基团的底物具有更高的产率,但取代基位置对产率的影响可以忽略不计。此外,进行了DFT计算,结果与自由基反应机理相吻合。该反应为吴茱萸碱及其衍生物的合成提供了一种简单且环保的方法。
New Tricks for an Old Natural Product: Discovery of Highly Potent Evodiamine Derivatives as Novel Antitumor Agents by Systemic Structure–Activity Relationship Analysis and Biological Evaluations
Evodiamine is a quinazolinocarboline alkaloid isolated from the fruits of traditional Chinese herb Evodiae fructus. Previously, we identified N13-substituted evodiamine derivatives as potent topoisomerase I inhibitors by structure-based virtual screening and lead optimization. Herein, a library of novel evodiamine derivatives bearing various substitutions or modified scaffold were synthesized. Among them, a number of evodiamine derivatives showed substantial increase of the antitumor activity, with GI(50) values lower than 3 nM. Moreover, these highly potent compounds can effectively induce the apoptosis of A549 cells. Interestingly, further computational target prediction calculations in combination with biological assays confirmed that the evodiamine derivatives acted by dual inhibition of topoisomerases I and II. Moreover, several hydroxyl derivatives, such as 10-hydroxyl evodiamine (10j) and 3-amino-10-hydroxyl evodiamine (18g), also showed good in vivo antitumor efficacy and low toxicity at the dose of 1 mg/kg or 2 mg/kg. They represent promising candidates for the development of novel antitumor agents.
Discovery of evodiamine derivatives as potent insecticide candidates
作者:Jingbo Liu、Yabing Shi、Shuting Chen、Fengyun Li、Wen Wen、Yuanhong Wang
DOI:10.1016/j.bmc.2022.116727
日期:2022.5
search for novel more effective insecticides, natural products could be used as ideal template compounds due to their good environmental compatibility, various bioactivities, unique scaffolds and mode of action. We have found that natural product evodiamine, the main active component from the fruits of Evodia rutaecarpa (Juss.) Benth, displayed obvious insecticidal activities against lepidoptera pests