Antioxidant constituents from Cotoneaster racemiflora.
A new lignan rhamnoside, racemiside (1), has been isolated from the ethyl acetate-soluble fraction of Cotoneaster racemiflora, along with scopoletin (2), 7,8-dimethoxy-6-hydroxycoumarin (3), 3,3',4'-tri-O-methylellagic acid (4), and cereotagloperoxide (5), reported for the first time from this species. All of them showed profound antioxidative activities in the DPPH assay.
Khan
Shafiullah
S
Pharmaceutical Research Centre, Karachi, Pakistan.
Riaz
Naheed
N
Afza
Nighat
N
Malik
Abdul
A
Aziz-ur-Rehman
Iqbal
Lubna
L
Lateef
Mehreen
M
D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D001713:Biphenyl Compounds; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D015394:Molecular Structure; D010154:Pakistan; D010851:Picrates / Q000494:pharmacology; D010946:Plants, Medicinal / Q000737:chemistry*; D027824:Rosaceae / Q000737:chemistry*; D012603:Scopoletin / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
D000975:Antioxidants; D001713:Biphenyl Compounds; D006027:Glycosides; D017705:Lignans; D010851:Picrates; C539302:racemiside; C004931:1,1-diphenyl-2-picrylhydrazyl; D012603:Scopoletin