A new glycoside, gamma-pyranone-3-O-beta-D-[6'-(4'-hydroxy-3',5'-dimethyoxybenzoyl)]-glucopyranoside (erigeside D, 2), together with nine known compounds, viz., erigeside I (1), erigeside A (3), eriges...A new glycoside, gamma-pyranone-3-O-beta-D-[6'-(4'-hydroxy-3',5'-dimethyoxybenzoyl)]-glucopyranoside (erigeside D, 2), together with nine known compounds, viz., erigeside I (1), erigeside A (3), erigeside B (4), erigeside II (5), scopolin (6), icariside B-2 (7), blumenol C glucoside (8), (+)-syringaresinol O-beta-D-glucopyranoside (9) and scutellarein-7-O-beta-D-glucuronide methyl ester (10), was isolated from Erigeron breviscapus (Vant.) Hand.-Mazz. Their structures were established on the basis of spectral evidence. According to the beta-glucopyranosyl moiety in 7, the absolute configuration of 7 was determined by X-ray crystallographic analysis. Compounds 7, 8 and 9 were isolated for the first time from this genus, an compound 6 was first obtained from this plant.展开更多
文摘A new glycoside, gamma-pyranone-3-O-beta-D-[6'-(4'-hydroxy-3',5'-dimethyoxybenzoyl)]-glucopyranoside (erigeside D, 2), together with nine known compounds, viz., erigeside I (1), erigeside A (3), erigeside B (4), erigeside II (5), scopolin (6), icariside B-2 (7), blumenol C glucoside (8), (+)-syringaresinol O-beta-D-glucopyranoside (9) and scutellarein-7-O-beta-D-glucuronide methyl ester (10), was isolated from Erigeron breviscapus (Vant.) Hand.-Mazz. Their structures were established on the basis of spectral evidence. According to the beta-glucopyranosyl moiety in 7, the absolute configuration of 7 was determined by X-ray crystallographic analysis. Compounds 7, 8 and 9 were isolated for the first time from this genus, an compound 6 was first obtained from this plant.
