Telomerase Inhibitors from Cyanobacteria: Isolation and Synthesis of Sulfoquinovosyl Diacylglycerols from<i>Microcystis aeruguinosa</i>PCC 7806
作者:Malika Makhlouf Brahmi、Cyril Portmann、Danilo D'Ambrosio、Tom M. Woods、Damiano Banfi、Patrick Reichenbach、Laeticia Da Silva、Emilie Baudat、Gerardo Turcatti、Joachim Lingner、Karl Gademann
DOI:10.1002/chem.201203296
日期:2013.4.2
By using the Telospot assay, 27 different extracts of cyanobacteria were evaluated for telomerase inhibition. All extracts showed varying, but significant activity. We selected Microcystis aeruguinosa PCC 7806 to identify the active compound and a bioassay guided fractionation led us to isolate mixtures of sulfoquinovosyl diacylglycerols (SQDGs), which were identified by 2D NMR and MS/MS experiments
通过使用Telospot分析,评估了27种不同的蓝细菌提取物对端粒酶的抑制作用。所有提取物均显示出变化,但活性显着。我们选择了铜绿微囊藻PCC 7806来鉴定活性化合物,生物测定指导的分馏使我们分离了磺基喹喔基二酰基甘油(SQDG)的混合物,该混合物通过2D NMR和MS / MS实验鉴定。然后合成纯的SQDG衍生物。该IC 50纯合成sulfoquinovosyl dipalmitoylglycerol的值和针对monopalmitoylated端粒酶衍生物被确定为17和40μ中号, 分别。通过结构-活性关系研究,可以鉴定具有改进的亲脂性酰基的化合物,从而显示出更高的活性。