乌干达沃氏吴茱萸叶中的黄酮醇苷

Flavonol glycosides of Warburgia ugandensis leaves.

作者信息

Manguro Lawrence O Arot, Ugi Ivar, Lemmen Peter, Hermann Rudolf

机构信息

Nairobi University, Chemistry Department, PO Box 30197, Nairobi, Kenya.

出版信息

Phytochemistry. 2003 Oct;64(4):891-6. doi: 10.1016/s0031-9422(03)00374-1.

DOI:10.1016/s0031-9422(03)00374-1

PMID:14559287

Abstract

Four new flavonol gycosides: kaempferide 3-O-beta-xylosyl (1-->2)-beta-glucoside, kaempferol 3-O-alpha-rhamnoside-7,4'-di-O-beta-galactoside, kaempferol 3,7,4'-tri-O-beta-glucoside and quercetin 3-O-[alpha-rhamnosyl (1-->6)] [beta-glucosyl (1-->2)]-beta-glucoside-7-O-alpha-rhamnoside, were characterized from a methanolic leaf extract of Warburgia ugandensis. The known flavonols: kaempferol, kaempferol 3-rhamnoside, kaempferol 3-rutinoside, myricetin, quercetin 3-rhamnoside, kaempferol 3-arabinoside, quercetin 3-glucoside, quercetin, kaempferol 3-rhamnoside-4'-galactoside, myricetin 3-galactoside and kaempferol 3-glucoside were also isolated. Structures were established by spectroscopic and chemical methods and by comparison with authentic samples.

摘要

从乌干达沃伯格氏树叶的甲醇提取物中鉴定出了四种新的黄酮醇苷

山柰酚3 - O - β - 木糖基（1→2）- β - 葡萄糖苷、山奈酚3 - O - α - 鼠李糖苷 - 7,4'- 二 - O - β - 半乳糖苷、山奈酚3,7,4'- 三 - O - β - 葡萄糖苷和槲皮素3 - O - [α - 鼠李糖基（1→6）][β - 葡萄糖基（1→2）]- β - 葡萄糖苷 - 7 - O - α - 鼠李糖苷。还分离出了已知的黄酮醇：山奈酚、山奈酚3 - 鼠李糖苷、山奈酚3 - 芸香糖苷、杨梅素、槲皮素3 - 鼠李糖苷、山奈酚3 - 阿拉伯糖苷、槲皮素3 - 葡萄糖苷、槲皮素、山奈酚3 - 鼠李糖苷 - 4'- 半乳糖苷、杨梅素3 - 半乳糖苷和山奈酚3 - 葡萄糖苷。通过光谱和化学方法并与标准样品比较确定了其结构。