Apotirucallane triterpenoids from Luvunga sarmentosa (Rutaceae)

被引:11
作者
Lien, TP
Kamperdick, C
Schmidt, J
Adam, G
Sung, TV
机构
[1] Natl Ctr Nat Sci & Technol Vietnam, Inst Chem, Hanoi, Vietnam
[2] Inst Plant Biochem, D-06120 Halle Saale, Germany
关键词
Luvunga sarmentosa; Rutaceae; apotirucallane triterpenoids; luvungins A-G; 1 alpha-acetoxyluvungin A;
D O I
10.1016/S0031-9422(02)00156-5
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
The leaves of Luvungu sarmentosa (Bl.) Kurz. yielded eight apotirucallane triterpenoids named luvungins A-G. and 1alpha-acetoxyluvungin A. Characteristic of the structure arc the seven-membered lactone-ring A, the alpha-hydroxyl or alpha-acetoxyl group at C-7 and an oxygen bridge in the side chain giving five-, six- or seven-membered rings, respectively. Because of a hemiacetal function at C-21, luvungin C occurred as a mixture of 21-epimers. The structures have been elucidated on the basis of MS and NMR spectral data. In addition, two known coumarins ostruthin (6-geranyl-7-hydroxycoumarin) and 8-geranyl-7-hydroxycoumarin as well as five known triterpenes friedelin, flindissone, melianone. niloticin and limonin were isolated. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:747 / 754
页数:8
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