繁缕中的黄酮碳苷类化合物(英文)

目的:研究繁缕中的黄酮类化合物。方法:95%的乙醇提取物的水混悬液依次用石油醚、乙酸乙酯和正丁醇萃取,各种柱层析进行分离纯化,UV,NMR等波谱数据进行结构鉴定。结果:从中分离得到14个黄酮碳苷类化合物,其结构鉴定为:芹菜素(apigenin)(1),芹菜素-6,8-二-C-β-D-吡喃葡萄糖苷(2),即新西兰牡荆苷-2[vicenin-Ⅱ(6,8-二-C-β-D-glucopyranosylapigenin)],芹菜素-6-C-β-D-葡萄糖-8-C-β-D-半乳糖苷(8-C-β-D-galactopyranosylisovitexin(6-C-β-D-glucopyra-nosyl-8-C-β-D-galactopyranosylapigenin)(3),芹菜素-6-C-β-D-半乳糖-8-C-β-D-葡萄糖苷(6-C-β-D-galactopyranosylvitexin6-C-β-D-galactopyranosyl-8-C-β-D-glucopyranosylapigenin)(4),芹菜素-6,8-二-C-α-L-阿拉伯糖苷(6,8-di-C-α-L-arabinopyranosylapi-genin)(5),芹菜素-6-C-β-D-葡萄糖-8-C-α-L-阿拉伯糖苷[schaftoside(6-C-β-D-glucopyranosyl-8-C-α-L-arabinosylapigenin)](6),芹菜素-6-C-α-L-阿拉伯糖-8-C-β-D-葡萄糖苷[isoschaftoside(6-C-α-L-arabinosyl-8-C-β-D-glucopyranosylapigenin)](7),芹菜素-6-C-β-D-半乳糖-8-C-α-L-阿拉伯糖苷(6-C-β-D-galactopyranosyl-8-C-α-L-arabinosylapigenin)(8),芹菜素-8-C-β-D-半乳糖(8-C-β-D-galactosylapigenin)(9),牡荆素[vitexin(8-C-β-D-glucopyranosylapigenin)](10),异牡荆素[isovitexin(6-C-β-D-glucopyra-nosylapigenin)](11),麦黄酮-6,8-二-C-β-D葡萄糖苷(tricetin6,8-di-C-β-D-glucopyranoside)(12),麦黄酮-6-C-α-L-阿拉伯糖-8-C-β-D-葡萄糖苷[tricetin6-C-α-L-arabinosyl-8-C-β-D-galactopyranoside](13),7-O-β-D-葡萄糖基-6-C-β-D-葡萄糖(6″-乙酰基)芹菜素[7-O-β-D-glucopyranosyl-6-C-β-D-6″-acetyl-glucopyranosylapigenin](14)。结论:9个化合物(3～8及12、13)为首次从该植物中分离得到,化合物14为新化合物。