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学科主题: 药学
题名:
Four new triterpenoid saponins from Conyza blinii
作者: Su, YF1; Guo, D1; Guo, HZ1; Liu, JS1; Zheng, JH1; Koike, K1; Nikaido, T1
刊名: JOURNAL OF NATURAL PRODUCTS
发表日期: 2001
DOI: 10.1021/np000310v
卷: 64, 期:1, 页:32-36
收录类别: SCI ; IC
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Plant Sciences ; Chemistry, Medicinal ; Pharmacology & Pharmacy
研究领域[WOS]: Plant Sciences ; Pharmacology & Pharmacy
英文摘要:

Three new bisdesmosidic saponins named conyzasaponins A, B, and C (1-3) and one new monodesmosidic saponin, conyzasaponin G (4), were isolated from the aerial parts of Conyza blinii. Their structures were elucidated on the basis of extensive NMR (DEPT, DQF-COSY, HOHAHA, HMQC, HMBC, and NOESY) and MS studies. Compounds 1-3 share a common prosapogenin, bayogenin 3-O-beta -D-xylopyranosyl-(1-->3)-beta -D-glucopyranoside, which is identical with conyzasaponin G (4), and differ in the structures of the ester-linked sugar moieties at C-28. Conyzasaponin A (1) is the 28-O-beta -D-apiofuranosyl-(1-->3)-beta -D-xylopyranosyl-(1-->4)-alpha -L-rhamnopyranosyl-(1-->2)-alpha -L-arabinopyranosyl ester, conyzasaponin B (2), the 28-O-beta -D-apiofurano-syl-(1-->3)-beta -D-xylopyranosyl-(1-->4)-[alpha -L-arabinopyranosyl-(1-->3)]-alpha -L-rhamnopyranosyl-(1-->2)-alpha -L-arabnnopyranosyl ester, and conyzasaponin C (3), the 28-O-alpha -L-rhamnopyranosyl-(1-->3)-beta -D-xylopyranosyl-(1-->4)-[beta -D-apiofuranosyl-(1-->3)]-alpha -L-rhamnopyranosyl-(1-->2)-alpha -L-arabinopyranosyl ester of the prosapogenin, respectively.

语种: 英语
WOS记录号: WOS:000166696400008
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/50177
Appears in Collections:北京大学药学院_期刊论文

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作者单位: 1.Peking Univ, Sch Pharmaceut Sci, Beijing 100083, Peoples R China
2.Toho Univ, Sch Pharmaceut Sci, Chiba 2748510, Japan

Recommended Citation:
Su, YF,Guo, D,Guo, HZ,et al. Four new triterpenoid saponins from Conyza blinii[J]. JOURNAL OF NATURAL PRODUCTS,2001,64(1):32-36.
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