Phytochemical Investigations of the Stem Bark of Senna Floribunda and Senna Didymobotrya

No Thumbnail Available

Date

1999-08

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

Citation

Collections