Phytochemical Investigations of the Stem Bark of Senna Floribunda and Senna Didymobotrya
No Thumbnail Available
Date
1999-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
Anthraquinones and a naphthoquinone have been isolated and characterized from the stem barks of S. jloribllllda and S. didymobofJya.
The CH2CI2:MeOH (1:1) extract of the stem bark of S. jloribllllda yielded four
bianthraquinones: floribundone-l (43), 5,7'-physcion-fallacinol (53), 5,7'-physcionphyscion
anthrone (83), 5,5'-physcion-physcion anthrone (84) along with three common
anthraquinones: physcion, chrysophanol and emodin. The isolation of 5,7'-Physcionphyscion
anthrone and 5,5'-physcion-physcion anthrone is repOlied here for the first time.
The CH2CI2:MeOH (1: I) extract of S. didymoboflya bark yielded four compounds: 2-
methoxystypandrone (82), 10-( chrysophanol-7'-yl)-1 0-hydroxychrysophanol-9-anthrone
(70), fallacinol (6) and 1O,lO'-bichrysophanol (59) along with the three common
anthraquinones: physcion, chrysophanol and emodin.
The elucidation of the structures was based on spectroscopic data and in some cases by
direct TLC comparison with authentic samples.
Description
Keywords
Senna Floribunda and Senna Didymobotrya