Six triterpenoid saponins from Maesa laxiflora

被引：19

作者：

Jiang, Z

Gallard, JF

Adeline, MT

Dumontet, V

Van Tri, M

Sévenet, T

Päis, M ^{[1
]}

机构：

[1] CNRS, Inst Chim Subst Nat, F-91198 Gif Sur Yvette, France

[2] NCST, Inst Chim, Hanoi, Vietnam

来源：

JOURNAL OF NATURAL PRODUCTS | 1999年 / 62卷 / 06期

关键词：

D O I：

10.1021/np990028s

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Six new triterpenoid saponins, maelaxins A-F (1-6), were isolated from a n-BuOH extract of the leaves of Maesa laxiflora. They possess 22-O-angeloyl-camelliagenin A, 16-O-acetyl, 22-O-angeloyl-camelliagenin A, or 22-O-(2Z)-hexenoyl-camelliagenin A as the aglycon. The pentasaccharide moiety linked to C-3 of the aglycon consists of D-glucuronic acid, L-rhamnose, D-glucose, and/or D-galactose. Their structures were elucidated by extensive NMR experiments including H-1-H-1 (COSY, 2D HOHAHA, NOESY) and H-1-C-13 (HMQC and HMBC) spectroscopy and chemical evidence.

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收藏

页码：873 / 876

页数：4

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