Triterpenoid saponins from Hedyotis nudicaulis

被引：23
|
作者：
Konishi, M
Hano, Y
Takayama, M
Nomura, T
Hamzah, AS
Ahmad, RB
Jasmani, H
机构：
[1] Toho Univ, Fac Pharmaceut Sci, Funabashi, Chiba 274, Japan
[2] Inst Teknologi MARA, Sch Appl Sci, Shah Alam 40450, Selangor, Malaysia
来源：
PHYTOCHEMISTRY | 1998年 / 48卷 / 03期
关键词：
Hedyotis nudicaulis; Rubiaceae; nudicaucins A; B and C; triterpenoid saponin;
D O I：
10.1016/S0031-9422(98)00038-7
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Three new triterpenoid saponins, nudicaucins A, B and C and a known saponin guaiacin D have been isolated from the n-butanol extract of Hedyotis nudicaulis. The structures of nudicaucins A, B and C were elucidated to be beta-D-glucopyranosyl 3-O-[beta-D-galactopyranosyl(1 --> 3)alpha-L-arabinopyranosyl]-30-norolean-12,20(29)-dien-28-oate, beta-D-glucopyranosyl 3-O-[beta-D-galactopyranosyl( 1 --> 3)alpha-L-arabinopyranosyl]oleanoate and beta-D-glucopyranosyl 3-O-[alpha-L-rhamnopyranosyl( 1 --> 2)alpha-L-arabinopyranosyl(3 --> 1)beta-D-glucopyranosyl]oleanoate, respectively, on the basis of NMR spectroscopic analysis and comparison of the spectral data with those of known saponins. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：525 / 528
页数：4
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