期刊
CHEMICAL & PHARMACEUTICAL BULLETIN
卷 57, 期 3, 页码 276-279出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.57.276
关键词
Otostegia limbata; Lamiaceae; flavonol glycoside; chemotaxonomy
资金
- Higher Education Commission (HEC)
A BuOH-soluble part of the methanolic extract from the roots of Otostegia limbata yielded two new flavonol glycosides; kaempferol 3-O-[beta-D-glucopyranosyl-(1 -> 2)-{beta-D-glucopyranosyl-(1 -> 3)}-{beta-D-glucopyranosyl-(1 -> 4)}-alpha-L-rhamnopyranoside]-7-O-[alpha-L-rhamnopyranoside] (1) and kaempferol 3-O-[beta-D-glucopyranosyl-(1 -> 4)-beta-D-6 ''''''[4-hydroxy (E)-cinnamoyl]glucopyranosyl-(1 -> 3)-{beta-D-glucopyranosyl-(1 -> 2)}-alpha-L-rhamnopyranoside ]-7-O-[alpha-L-rhamnopyranoside] (2). The structures of these compounds were elucidated by spectroscopic and chemical means. To the best of our knowledge, these are the largest flavonoids derivatives described so far from the genus Otostegia.
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