Antioxidant flavonoid glycosides from aerial parts of the fern Abacopteris penangiana.
Five new flavan-4-ol glycosides, abacopterins E-I ( 5- 9), and seven known flavonoid glycosides ( 3 and 10- 15) were isolated from the aerial parts of the fern Abacopteris penangiana. Their structures were elucidated on the basis of extensive spectroscopic analysis, including HSQC, HMBC, (1)H- (1)H COSY, and ROESY, and chemical evidence. The isolated glycosides were evaluated for their antioxidant activity using the TEAC assay, and compounds 3, 5- 8, 10, 11, 14, and 15 showed TEAC values of 1.03-1.91 mM.
Zhao
Zhongxiang
Z
School of Chinese Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, 510006, People's Republic of China.
Jin
Jing
J
Ruan
Jinlan
J
Zhu
Chenchen
C
Lin
Chaozhan
C
Fang
Wei
W
Cai
Yaling
Y
D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029624:Ferns / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*
D000975:Antioxidants; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D016166:Free Radical Scavengers; D006027:Glycosides