Synthesis and evaluation of cardiac glycoside mimics as potential anticancer drugs
作者:Marie Jensen、Steffen Schmidt、Natalya U. Fedosova、Jan Mollenhauer、Henrik H. Jensen
DOI:10.1016/j.bmc.2011.02.016
日期:2011.4
core linked to a labile trisaccharide, has been used for centuries for the treatment of congestive heart failure. The well known pharmacological effect is a result of the ability of cardiac glycosides to inhibit the Na+, K+-ATPase. Within recent years cardiac glycosides have furthermore been suggested to possess valuable anticancer activity. To mimic the labile trisaccharide of digitoxin with a stabile
心脏糖苷洋地黄毒毒素由连接到不稳定的三糖的类固醇核心组成,已经使用了多个世纪,用于治疗充血性心力衰竭。众所周知的药理作用是强心苷抑制Na +,K + -ATPase的能力的结果。在最近几年中,心脏糖苷还被建议具有有价值的抗癌活性。为了模拟具有稳定的碳水化合物替代物的洋地黄毒素不稳定的三糖,我们使用了不同长度的硫连接的乙二醇部分(单,二,三或四乙二醇),此外,还使用了这些接头作为合成的处理方法二价类固醇。评价制备的化合物抑制Na +,K的能力+ -ATPase及其对癌细胞MCF-7的细胞毒性作用。在抑制作用和细胞毒性作用上均观察到明显趋势,其中生物活性随大小增加而降低。最有效的Na +,K + -ATPase抑制剂是具有最短的乙二醇链(K app为0.48μM)和硫指氧还蛋白(K app为0.42μM)的化合物,两者均与洋地黄毒苷(K app为0.52μM )相当。对于癌细胞活力测定法,发现