Five new glycosides from Hypericum erectum Thunb.
Five new glycosides, quercetin 3'-O-beta-D: -galactopyranoside (1), quercetin 3-O-(2''-acetyl)-beta-D: -glucopyranoside (2), 4,6-dihydroxy-2-methoxyphenyl 1-O-beta-D: -glucopyranoside (3), 4-hydroxy-2,6-dimethoxyphenyl 1-O-alpha-L: -rhamnopyranosyl (1 --> 6)-beta-D: -glucopyranoside (4) and 3-methyl-but-2-en-1-yl beta-D: -glucopyranosyl (1 --> 6)-beta-D: -glucopyranoside (5), were isolated from Hypericum erectum Thunb. Their structures were established on the basis of spectral and chemical data.
Machida
Koichi
K
Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi, Japan.
Matsuoka
Erika
E
Kikuchi
Masao
M
D006027:Glycosides / Q000302:isolation & purification*; D020902:Hypericum / Q000737:chemistry*; D008518:Medicine, East Asian Traditional; D010936:Plant Extracts / Q000737:chemistry*; D013057:Spectrum Analysis
D006027:Glycosides; D010936:Plant Extracts