(17S)-2α,3α,18β,23,24-pentahydroxy-19(18→17)-abeo-28-norolean-12-en-21-one from the rhizome of Phlomis umbrosa

被引：4

作者：

Liu, P

Qiao, W

Jia, W

Teng, J

Duan, HQ ^{[1
]}

机构：

[1] Tianjin Med Univ, Sch Pharm, Tianjin 300070, Peoples R China

[2] Tianjin Univ, Coll Pharmaceut & Biotechnol, Tianjin 300072, Peoples R China

[3] Shanghai Jiao Tong Univ, Sch Pharm, Shanghai 200240, Peoples R China

来源：

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS | 2006年 / 62卷

关键词：

D O I：

10.1107/S1600536806003151

中图分类号：

O7 [晶体学];

学科分类号：

0702 [物理学]; 070205 [凝聚态物理]; 0703 [化学]; 080501 [材料物理与化学];

摘要：

A new nortriterpenoid, C29H48O6, with a novel skeleton was isolated from the rhizome of Phlomis umbrosa. The compound is composed of a linear array of four fused six-membered rings and a five-membered ring. The central ring has a slightly distorted half-chair conformation, while the other three six-membered rings adopt chair conformations. There are one intra- and four intermolecular hydrogen bonds, forming an extensive hydrogen-bonding network within the crystal structure.

引用

页码：O919 / O921

页数：3