Phytochemical investigation of the twigs of Syringa oblata var. diatata led to the isolation of two new secoiridoid glucosides, dilatioside A–B (1–2), along with thirteen known ones (3–15). The structures were determined by spectroscopic methods including one and two dimensional (1- and 2D-) NMR techniques, high resolution (HR)-FAB-MS, and chemical methods. The isolated compounds (1–15) were tested for the induction of nerve growth factor (NGF) secretion in a C6 rat glioma cell line and their cytotoxicity against four human cancer cell lines (A549, SK-OV-3, SK-MEL-2, HCT15) in vitro using a sulforhodamine B bioassay. Compounds 5, 7, 8, 10, and 14 were found to induce upregulation of NGF secretion without causing significant cell toxicity.
Diatata 变种的小枝进行了植物
化学研究,分离出了两种新的琥珀苷--地拉地苷 A-B (1-2),以及 13 种已知的琥珀苷 (3-15)。这些化合物的结构是通过光谱方法(包括一维和二维核磁共振技术)、高分辨率(HR)-FAB-MS 和
化学方法确定的。利用磺基
罗丹明 B 生物测定法测试了分离出的化合物(1-15)在 C6 大鼠胶质瘤
细胞系中诱导神经生长因子(NGF)分泌的情况,以及它们在体外对四种人类癌
细胞系(A549、SK-OV-3、SK-ME
L-2 和 HCT15)的细胞毒性。结果发现,化合物 5、7、8、10 和 14 能诱导 NGF 分泌上调,但不会对细胞造成明显毒性。