title: New polyglucopyranosyl and polyarabinopyranosyl of fatty acid derivatives from the fruits of Lycium chinense and its antioxidant activity.
abstract: Four new compounds 3,4-dihydroxy benzoic acid 3-octadecanoyl-4-O-α-L-arabinopyranosyl (2a→1b)-2a-O-α-L-arabinopyranosyl-(2b→1c)-2b-O-α-L-arabinopyranoside (1), 2,6,10-trimethyl-n-dodec-2-en-1-oyl-1-O-α-L-arabinopyranosyl-(2a→1b)-2a-O-α-L-arabinopyranosyl-(2b→1c)-2b-O-α-L-arabinopyranosyl-(2c→1d)-2c-O-α-L-arabinopyranosyl-(2d→1e)-2d-O-α-L-arabinopyranosyl-(2e→1f)-2e-O-α-L-arabinopyranosyl-(2f→1g)-2f-O-α-L-arabinopyranoside (2), n-docos-9,12-dienoyl-α-D-glucopyranosyl-(2a→1b)-2a-O-α-D-glucopyranosyl-(2b→1c)-2b-O-α-D-glucopyranosyl-(2c→1d)-2c-O-α-D-glucopyranosyl-(2d→1e)-2d-O-α-D-glucopyranosyl-(2e→1f)-2e-O-α-D-glucopyranoside (3), β-D-glucopyranosyl-(2a→1b)-2a-O-β-L-arabinopyranosyl-(2b→1c)-2b-O-β-L-arabinopyranosyl-(2c→1d)-2c-O-β-L-arabinopyranosyl-(2d→1e)-2d-O-β-L-arabinopyranosyl-(2e→1f)-2e-O-β-L-arabinopyranoside (4) along with some know compounds, were isolated and identified from a methanol extract Lycium chinense fruits. Their structures were determined of the new compounds using one- and two-dimensional NMR spectroscopies in combination by IR, FAB/MS and HR-FAB/MS. The compounds 1-4 were investigated for the antioxidant potential using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and the phosphomolybdenum activity and the results demonstrate that the compounds (2 and 3) has potential as a natural antioxidant whereas the compound (4) exhibited moderate activity and the compound (1) exhibited weak antioxidant activity.
authors.affiliation: Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 143 701, South Korea.
authors.forename: Ill-Min
authors.initials: IM
authors.lastname: Chung
authors.affiliation: Faculty of Pharmacy, Hamdard University, New Delhi 110 062, India.
authors.forename: Mohd
authors.initials: M
authors.lastname: Ali
authors.affiliation: Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 143 701, South Korea.
authors.forename: Nagella
authors.initials: N
authors.lastname: Praveen
authors.affiliation: Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 143 701, South Korea.
authors.forename: Bo-Ra
authors.initials: BR
authors.lastname: Yu
authors.affiliation: Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 143 701, South Korea.
authors.forename: Seung-Hyun
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul 143 701, South Korea. Electronic address: ateeque97@gmail.com.
authors.forename: Ateeque
authors.initials: A
authors.lastname: Ahmad
mesh_terms: D000975:Antioxidants; D005227:Fatty Acids / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D032305:Lycium / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*
chemical_list: D000975:Antioxidants; D005227:Fatty Acids
keywords: Antioxidant activity; Lycium chinense Miller; New constituents; Solanaceae