Antioxidant flavonoids from the seed of Oroxylum indicum

作者：Yan, Ren-yi; Cao, Yang-yang; Chen, Cheng-yu; Dai, Hui-qing; Yu, Sheng-xian; Wei, Jie-lin; Li, Hua; Yang, Bin^*

来源：Fitoterapia, 2011, 82(6): 841-848.

DOI：10.1016/j.fitote.2011.04.006

• Oroxylum indicum
• Bignoniaceae
• Flavonoid
• Antioxidant activity
• DPPH
• ORAC

Three new flavonoid glycosides (1-3) and nineteen known compounds (4-22) were isolated from the aqueous ethanolic extract of the seed of Oroxylum indicum. The structures of 1-3 were elucidated on the basis of spectroscopic analysis. Antioxidant activities of all the isolated compounds were evaluated using a DPPH and an ORAC assay. Compounds 3, 5-7, 9 and 12 exhibited potent antioxidant activity in the DPPH assay, while compounds 3-15 showed potent antioxidant capacity in the ORAC assay, and seven antioxidant flavonoids (4-6, 8, 9, 11, 12) were detected as the main ingredients in the methanolic extract of seed of O. indicum using an HPLC analysis.

• 出版日期2011-9
• 单位中国中医科学院