Five new glycosides from <Emphasis Type="Italic">Hypericum erectum</Emphasis> Thunb. |
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Authors: | Koichi Machida Erika Matsuoka Masao Kikuchi |
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Institution: | (1) Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai Miyagi, 981-8558, Japan |
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Abstract: | Five new glycosides, quercetin 3′-O-β-d-galactopyranoside (1), quercetin 3-O-(2″-acetyl)-β-d-glucopyranoside (2), 4,6-dihydroxy-2-methoxyphenyl 1-O-β-d-glucopyranoside (3), 4-hydroxy-2,6-dimethoxyphenyl 1-O-α-l-rhamnopyranosyl (1 → 6)-β-d-glucopyranoside (4) and 3-methyl-but-2-en-1-yl β-d-glucopyranosyl (1 → 6)-β-d-glucopyranoside (5), were isolated from Hypericum erectum Thunb. Their structures were established on the basis of spectral and chemical data. |
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Keywords: | Hypericum erectum Clusiaceae Glycoside |
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