Novel quercetin glucosides from Helminthostachys zeylanica root and acceleratory activity of melanin biosynthesis
作者:Kosei Yamauchi、Tohru Mitsunaga、Irmanida Batubara
DOI:10.1007/s11418-012-0672-9
日期:2013.4
Two novel quercetin glucosides, namely 4′-O-β-d-glucopyranosyl-quercetin-3-O-β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside (compound 1) and 4′-O-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl-quercetin-3-O-β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside (compound 2), were isolated from Helminthostachys zeylanica root 50 % EtOH extract. Structural analysis of isolated compounds was achieved mainly by 600 MHz and 800 MHz NMR, UPLC–TOFMS and GC–MS. Of the two quercetin glucosides, compound 1 showed a high melanogenic acceleratory effect, 2.7 times higher than control, at 10 μM concentration in murine B16 melanoma cells, with no cytotoxic effect.
两种新型槲皮素葡萄糖苷、4′-O-β-d-glucopyranosyl-quercetin-3-O-β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside (化合物 1)和 4′-O-β-d-glucopyranosyl-(1→2)-β-d-glucopyranosyl-quercetin-3-O-β-d-glucopyranosyl-(1→4)-β-d-glucopyranoside (化合物 2)、从 Helminthostachys zeylanica 根 50 ;%EtOH提取物中分离得到。分离化合物的结构分析主要通过 600 MHz 和 800 MHz NMR、UPLC-TOFMS 和 GC-MS 来实现。在两种槲皮素葡萄糖苷中,化合物 1 在 10 μM 浓度下对小鼠 B16 黑色素瘤细胞具有较高的黑色素生成加速作用,是对照组的 2.7 倍,且无细胞毒性作用。