Spirocyclization reactions and antiproliferative activity of indole phytoalexins 1-methoxybrassinin and its 1-substituted derivatives
作者:Mariana Budovská、Martina Bago Pilátová、Viera Tischlerová、Ján Mojžiš
DOI:10.24820/ark.5550190.p009.958
日期:——
The effect of the reaction temperature and the solvent on the diastereoselectivity of the spirocyclization of 1-methoxybrassinin leading to 1-methoxyspirobrassinol methyl ether was studied. 1-Acyl derivatives of 1-methoxyspirobrassinol and 1-methoxyspirobrassinol methyl ether were prepared by the bromine-mediated spirocyclization reactions of derivatives of brassinin bearing an acyl group on the indole
also prepared from 5-bromoindole (IX) following the sequence for the synthesis 1-methoxyspirobrassinol methyl ether (V) from indoline. In addition, the new related 5-bromospiroindoline derivatives XX–XXIII were synthesised and their biological activity on human tumour cell lines was examined. The presence of bromine in the indole or indoline skeleton at the C-5 position resulted in the partial increase
亲电子芳族取代是有机化学中最深入研究的反应之一。在本文中,通过在各种溴化剂存在下亲电取代吲哚啉在C-5位置的芳族核,获得了5溴化螺螺芥子醇甲基醚VII,VIII。按照由二氢吲哚合成1-甲氧基螺芥菜籽油甲基醚(V)的顺序,也由5-溴吲哚(IX)制备相同的产物。此外,新的相关5-溴螺吲哚啉衍生物XX–XXIII合成了它们,并检查了它们对人肿瘤细胞系的生物学活性。在C-5位置的吲哚或二氢吲哚骨架中存在溴会导致对白血病细胞系(Jurkat,CEM)的抗癌活性部分提高。新制备的产品的结构通过1 H和13 C NMR光谱测定,包括HSQC,HMBC,COSY,NOESY和DEPT测量。
10.3998/ark.5550190.p009.958
作者:Budovská, Mariana、Pilátová, Martina Bago、Tischlerová, Viera、Mojžiš, Ján