Background: While granulatamides A and B have been previously isolated, their biological activities have been only partially examined. The aim of this study was to synthesize granulatamide B (4b), a tryptamine-derivative naturally occurring in Eunicella coral species, using the well-known procedure of Sun and Fürstner and its 12 structural analogues by modifying the side chain, which differs in length, degree
背景:虽然颗粒酰胺 A 和 B 之前已被分离出来,但它们的生物活性仅得到部分研究。本研究的目的是使用 Sun 和 Fürstner 的众所周知的程序,通过修饰长度不同的侧链来合成颗粒酰胺 B (4b),这是一种天然存在于 Eunicella 珊瑚物种中的色胺衍生物。 、饱和度以及双键的数量和共轭。方法:除了使用斑马鱼模型进行体内毒性评估外,还对所制备的化合物库进行了生物活性的综合评估,包括抗氧化、抗增殖和抗菌特性。化合物 4i 由视黄酸部分组成,对 ABTS 自由基表现出最强的清除活性(IC50 = 36 ± 2 μM)。此外,4b 和一些类似物(4a、4c 和 4i)主要含有不饱和链和共轭双键,表现出中等但非选择性的活性,某些 IC50 值在 20-40 μM 范围内。结果:相比之下,类似物4l(α-亚麻酸的衍生物)对正常细胞系的毒性最小。此外,4b 对革兰氏阳性枯草芽孢杆菌也具有高度活性,MIC
Tryptamine-derived alkaloids from Annonaceae exerting neurotrophin-like properties on primary dopaminergic neurons
作者:Fanny Schmidt、Gael Le Douaron、Pierre Champy、Majid Amar、Blandine Séon-Méniel、Rita Raisman-Vozari、Bruno Figadère
DOI:10.1016/j.bmc.2010.05.067
日期:2010.7
the compounds a combined neuroprotective and neuritogenic activity in the nanomolar range. The potent antioxidant activity of these natural products seems to be involved in part of their mechanism of action. This study provides the first description of natural neurotrophin mimetics present in Annonaceae extracts, and led to the biological characterization of compounds, which present a potential interest