GERMINATION AND GROWTH-INHIBITORY SESQUITERPENE LACTONES AND A FLAVONE FROM TITHONIA-DIVERSIFOLIA

被引：60

作者：

BARUAH, NC

SARMA, JC

BARUA, NC

SARMA, S

SHARMA, RP

机构：

[1] REG RES LAB,DIV NAT PROD CHEM,JORHAT 785006,INDIA

[2] GAUHATI UNIV,DEPT APPL BOT & BIOTECHNOL,GAUHATI 781014,INDIA

来源：

PHYTOCHEMISTRY | 1994年 / 36卷 / 01期

关键词：

TITHONIA DIVERSIFOLIA; ASTERACEAE; ALLELOPATHY; SESQUITERPENE LACTONES; HISPIDULIN;

D O I：

10.1016/S0031-9422(00)97006-7

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：

Inhibitory effects of two sesquiterpene lactones tagitinin A, tagitinin C and a flavonoid hispidulin isolated from Tithonia diversifolia were determined on germination of radish, cucumber and onion seeds. The flavonoid hispidulin was more toxic to the crop seeds tested and the activity of tagitinin C was weaker than that of tagitinin A and hispidulin. Seventeen derivatives have been prepared from tagitinin A and C by chemical transformation and their phytotoxicity has been compared with the parent compounds (all at 250 mu M) using radish seeds. The structural requirements related to their biological activity have also been delineated.

引用

页码：29 / 36

页数：8

共 19 条

[1] SESQUITERPENE LACTONES OF TITHONIA-DIVERSIFOLIA - STEREOCHEMISTRY OF THE TAGITININS AND RELATED COMPOUNDS [J].