ISSN:
1573-1561
Keywords:
Vitex fisherii
;
Verbenaceae
;
phytoecdysteroid
;
vitexirone
;
20-hydroxyecdysone
;
ajugasterone C
;
turkesterone
;
pink bollworm
;
Pectinophora gossypiella
;
Lepidoptera
;
Gelechiidae
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract A novel phytoecdysteroid, vitexirone, has been isolated from a MeOH extract of the root bark of the East African medicinal plantVitex fisherii by recycling high-performance liquid chromatography on a semipreparative scale. In addition, three known phytoecdysteroids, 20-hydroxyecdysone, ajugasterone C, and turkesterone, also were isolated. The structure of vitexirone has been established spectroscopically. The position and stereochemistry of the 11-α-hydroxy group of ajugasterone C and vitexirone were confirmed by the1H-1H homonuclear COSY NMR data. These phytoecdysteroids disrupt the molting process of the pink bollwormPectinophora gossypiella.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01017480
Permalink