TY - JOUR
T1 - Lignans from the fruits of the red pepper (Capsicum annuum L.) and their antioxidant effects
AU - Lee, Dae Young
AU - Lee, Do Gyeong
AU - Cho, Jin Gyeong
AU - Bang, Myun Ho
AU - Lyu, Ha Na
AU - Lee, Youn Hyung
AU - Kim, Se Young
AU - Baek, Nam In
PY - 2009/10
Y1 - 2009/10
N2 - The fruits of Capsicum annuum were extracted using 80% aqueous MeOH, and fractionated using EtOAc and water. Repeated column chromatography using silica gel, octadecyl silica gel, and Sephadex LH-20 for the EtOAc fraction led to the isolation of a new lignan glycoside and a known one, icariside E5. From the results of spectroscopic data, including EIMS, FABMS, UV, IR, 1H and 13C-NMR, DEPT, and 2D-NMR (COSY, HSQC, HMBC), the chemical structure of the new lignan glycoside was determined as (8R)-isodehydrodiconiferyl alcohol-4'-O-(6"-vanilloyl)-β-D- glucopyranoside named vanilloylicariside E5. All isolated compounds were tested for antioxidant activities using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Icariside E5 (2) and (8R)-Isodehydrodiconiferyl alcohol (3) exhibited a strong scavenging effect on DPPH (2: IC50=42.1 μM, 3: IC50=4.5 μM).
AB - The fruits of Capsicum annuum were extracted using 80% aqueous MeOH, and fractionated using EtOAc and water. Repeated column chromatography using silica gel, octadecyl silica gel, and Sephadex LH-20 for the EtOAc fraction led to the isolation of a new lignan glycoside and a known one, icariside E5. From the results of spectroscopic data, including EIMS, FABMS, UV, IR, 1H and 13C-NMR, DEPT, and 2D-NMR (COSY, HSQC, HMBC), the chemical structure of the new lignan glycoside was determined as (8R)-isodehydrodiconiferyl alcohol-4'-O-(6"-vanilloyl)-β-D- glucopyranoside named vanilloylicariside E5. All isolated compounds were tested for antioxidant activities using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Icariside E5 (2) and (8R)-Isodehydrodiconiferyl alcohol (3) exhibited a strong scavenging effect on DPPH (2: IC50=42.1 μM, 3: IC50=4.5 μM).
KW - (8R)- Isodehydrodiconiferyl alcohol
KW - Antioxidant activity
KW - Capsicum annuum L.
KW - DPPH
KW - Icariside E
KW - Vanilloylicariside E
UR - http://www.scopus.com/inward/record.url?scp=70450183639&partnerID=8YFLogxK
U2 - 10.1007/s12272-009-2001-8
DO - 10.1007/s12272-009-2001-8
M3 - Article
C2 - 19898795
AN - SCOPUS:70450183639
SN - 0253-6269
VL - 32
SP - 1345
EP - 1349
JO - Archives of Pharmacal Research
JF - Archives of Pharmacal Research
IS - 10
ER -