[Studies on the constituents of Aceraceae plants. I. Constituents in the leaves and the stem bark of Acer nikoense Maxim (author's transl)]
摘要：
Chemical constituents of the leaves and stem bark of Acer nikoense MAXIM. (Aceraceae) were examined. β-Amyrin, β-sitosterol contaminated with campesterol and stigmasterol, and β-sitosterol glucoside were obtained from both parts of the plant. β-Amyrin acetate, quercetin, quercitrin, and ellagic acid were isolated from the leaves, and scopoletin, (+)-rhododendrol (VIII), (+)-catechin, and two new glycosides named aceroside I (XI), C_H_O_8,mp 170-171° (from acetone), [α] D-7.7°, and epi-rhododendrin (XII), C_H_O_7,mp 81-84°, [α] D -15.5°, from the stem bark. The absolute configuration of VIII was proposed to be S from empirical rule on optical rotation-chirality relationship. Hydrolysis of aceroside I (XI) afforded acerogenin A (XIII) as its aglycone, whose structure has already been reported. The structure of epi-rhododendrin (XII) was elucidated to be (S)-4-(p-hydroxyphenyl) butan-2-ol 2-β-D-glucopyranoside from chemical and spectral evidences.
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关键词：
Acer nikoense MAXIM Aceraceae triterpenoids phytosterols flavonoids ellagic acid scopoletin rhododendrol structure of epi-rhododendrin aceroside I
DOI：
10.1248/yakushi1947.98.1_41
被引量：
年份：
1978
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