coadministered with antineoplastic agents, is an alternative approach for increasing the success rate of therapy regimes with different drug combinations. This report describes the isolation and structure elucidation of six new resin glycosides from moon vine seeds (Ipomoea alba) as potential mammalian multidrug-resistance-modifying agents. Albinosides IV–IX (1–6), along with the known albinosides I–III (7–9)
多药耐药性是一种或多种外排泵的表达,例如P-糖蛋白,是癌症治疗的主要障碍。与
抗肿瘤药共同使用的新型有效且无细胞毒性的外排泵调节剂是增加采用不同药物组合治疗方案成功率的替代方法。该报告描述了从月藤种子(Ipomoea alba)中分离出的六种新的
树脂糖苷,并对其结构进行了阐明,这些糖苷是潜在的哺乳动物多药耐药性改良剂。Albinosides IV-IX(1 - 6),与已知的albinosides I-III(沿7 - 9),从该纯化
氯仿3可溶
提取物。降解
化学反应结合NMR光谱和质谱用于阐明其结构。四个新的糖苷酸,albinosinic酸d-G(10 - 13),是由
天然产物的皂化释放3 - 6。它们表征为convolvulinolic的四糖(11 š -hydroxytetradecanoic)或jalapinolic(11 š -hydroxyhexadecanoic)酸。
长春碱的易感性