Analysis of the iridals in rhizome extracts of Iris variegata Linn.

被引：6

作者：

Lamshöft, M ^{[1
]}

Marner, FJ ^{[1
]}

机构：

[1] Univ Cologne, Inst Biochem, D-50674 Cologne, Germany

来源：

NATURAL PRODUCT RESEARCH | 2005年 / 19卷 / 01期

关键词：

Iris variegata; Iridaceae; iridals; cycloiridals; triterpenoids;

D O I：

10.1080/14786410410001652334

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Fractionation of the lipid extract from rhizomes of Iris variegata Linn. resulted in the isolation of one new and four known iridals. The latter were identified by comparison with authentic standards and NMR-spectroscopic analyses as 21-hydroxyiridal 1, 21-hydroxy-10-deoxyiridal 2, 16-hydroxyiridal 3 and 22-methyl-gamma-cycloiridal 4. The (R) configuration of C21 in compound 2 was determined by the exciton chirality method. The same stereochemistry has previously been found for the appropriate moieties in 1 and 3. Based on its spectroscopic properties the new triterpenoid was shown to be the 23-hydroxyiridal 5.

引用

页码：57 / 60

页数：4

共 7 条

[1] GENERAL-METHOD FOR DETERMINING ABSOLUTE-CONFIGURATIONS OF ACYCLIC ALLYLIC ALCOHOLS [J].