Dihydroroseoside, a new cyclohexanone glucoside, from the leaves of shirakamba (Betula platyphylla Sukatchev var.japonica Hara) |
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Authors: | YanBo Shen Minoru Terazawa |
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Institution: | (1) Faculty of Agriculture, Hokkaido University, 060-8587 Sapporo, Japan |
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Abstract: | A new cyclohexanone glucoside (II) and a known cyclohexenone glucoside roseoside I, (6S, 9S)-6-hydroxy-6-(9- -D-glucopyranosyloxy-trans-7-butenyl)-1,5,5-trimethyl-1-cyclohexenone] were isolated from an ethanol extract of shirakamba (Betula platyphylla Sukatchev var.japonica Hara) leaves. The structure ofII was determined to be (6S, 9R)-6-hydroxy-6-(9-O- -D-glucopyranosyloxy-trans-7-butenyl)-1, 5,5-trimethyl-1-cyclohexanone by1H-NMR and13C-NMR spectroscopic analyses. It was named dihydroroseoside. |
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Keywords: | Roseoside Dihydroroseoside Vomifoliol Dihydrovomifoliol Leaves Shirakamba Betulaplatyphylla Sukatchev var japonica Hara |
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