满天星中的黄酮类化合物及其抗氧化活性

Flavonoids from Gypsophila elegans and their antioxidant activities

摘要: 对石竹科花卉植物满天星(Gypsophila elegans)进行化学成分研究,通过波谱技术鉴定化合物结构,得到6 个黄酮苷化合物,分别为2″-O-α-L-阿拉伯糖异荭草苷(1)、芹黄素-6-C--7-O-β-D-吡喃葡萄糖苷(2)、芹黄素-8-C-β-D-吡喃葡萄糖苷(3)、肥皂草苷(4)、芹黄素-7-O-槐糖苷(5)、异牡荆素-2″-O-β-D -吡喃葡萄糖苷(6).除化合物4为首次从该植物中分离得到外,其它化合物均为首次从石竹科植物中分离得到.并采用DPPH自由基清除模型对分离得到的化合物进行了抗氧化活性筛选,化合物1显示出强抗氧化活性.

Abstract: The chemical constituents from Gypsophila elegans(Caryophyllaceae)were studied and six flavonoids were isolated.The structures of these compounds were identified by spectral data as isoorientin-2″-O-α-L-arabinopyranosyl (1),apigenin-6-C--7-O-β-D-glucopyranoside (2),apigenin-8-C-β-D-glucopyranoside (3),saponarin (4),apigenin-7-O-sophoroside (5) and isovitexin-2″-O-β-D-glucopyranoside (6). Compound (4) was first isolated from this plant and others five compounds were obtained from Caryophyllaceae family for the first time.Their antioxidant activities were also investigated by DPPH method,1 showed antioxidant activity.