Synthesis of MeON-neoglycosides of digoxigenin with 6-deoxy- and 2,6-dideoxy- d -glucose derivatives and their anticancer activity
作者:Dong-dong Wang、Xiao-san Li、Yu-zhou Bao、Jie Liu、Xiao-kun Zhang、Xin-sheng Yao、Xue-Long Sun、Jin-Shan Tang
DOI:10.1016/j.bmcl.2017.06.008
日期:2017.8
Cardiac glycosides show anticancer activities and their deoxy-sugar chains are vital for their anticancer effects. In order to study the structure-activity relationship (SAR) of cardiac glycosides toward cancers and get more potent anticancer agents, a series of MeON-neoglycosides of digoxigenin was synthesized and evaluated. First, ten 6-deoxy- and 2,6-dideoxy-d-glucopyranosyl donors were synthesized
心脏苷具有抗癌活性,其脱氧糖链对其抗癌作用至关重要。为了研究强心苷与癌症的构效关系(SAR)并获得更有效的抗癌药,合成并评估了一系列洋地黄毒苷的MeON-新糖苷。首先,从甲基α - d-吡喃葡萄糖苷和2-deoxy- d开始合成十个6-deoxy-和2,6-dideoxy- d-吡喃葡萄糖基供体。-葡萄糖。同时,洋地黄毒苷是通过将市售的地高辛作为糖基受体进行酸性水解而获得的。然后,通过新糖基化方法成功地合成了地高辛配基的22人MeON-新糖苷文库。最后,评估了Nur77表达的诱导及其从细胞核到细胞质的转运以及这些MeON-新糖苷的细胞毒性。SAR分析表明,C3糖基化是诱导Nur77表达所必需的。此外,一些MeON-新糖苷(2b和8b)可显着诱导Nur77的表达及其从细胞核到细胞质的转运。然而,这些化合物对癌细胞的增殖没有抑制作用,表明它们可能不会诱导NIH-H460癌细胞的凋亡,其潜在的潜力和在癌细胞中的应用值得进一步研究。