Flexible and enantioselective access to jaspine B and biologically active chain-modified analogues thereof
作者:Yahya Salma、Stéphanie Ballereau、Carine Maaliki、Sonia Ladeira、Nathalie Andrieu-Abadie、Yves Génisson
DOI:10.1039/c004218h
日期:——
Whereas the all-cis tetrahydrofuran framework of the cytotoxic anhydrophytosphingosine jaspine B is considered as a relevant pharmacophore, little is known about the influence of the aliphatic chain of this amphiphilic molecule on its activity. We developed a synthetic strategy allowing flexible introduction of various lipophilic fragments in the jaspine's skeleton. The route was validated with two distinct approaches to jaspine B. Five chain-modified analogues were also prepared. Biological evaluation of these derivatives demonstrated a good correlation between their cytotoxicity and their capacity to inhibit conversion of ceramide into sphingomyelin in melanoma cells. A series of potent and selective inhibitors of sphingomyelin production was thus identified. Furthermore, the good overall potency of an ω-aminated analogue allowed us to dissociate of the pharmacological action of jaspine B from its amphiphilic nature.
尽管细胞毒性物质anhydrophytosphingosine jaspine B的全顺式四氢呋喃骨架被认为是相关药效基团,但对于这种两亲性分子中的脂肪链对其活性的影响却知之甚少。我们开发了一种合成策略,允许在jaspine的骨架中灵活引入各种亲脂性片段。这条路线通过两种不同的方法验证了jaspine B的合成。我们还制备了五个经过链修饰的类似物。这些衍生物的生物学评价显示,它们的细胞毒性与抑制黑色素瘤细胞中神经酰胺转化为鞘磷脂的能力之间存在良好的相关性。因此,我们鉴定出一组强效且选择性的鞘磷脂生产抑制剂。此外,一个ω-氨基化类似物表现出的良好整体效能,使我们能够将jaspine B的药理作用与其两亲性本质分离。