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Bacopasides III-V: three new triterpenoid glycosides from Bacopa monniera
Ajit Kumar Chakravarty1, Saraswati Garai, Kazuo Masuda
1Indian Institute of Chemical Biology, Kolkata, India.
Chemical & Pharmaceutical Bulletin
|February 11, 2003
Abstract:
Three new saponins, designated as bacopasides III, IV and V have been isolated from Bacopa monniera WETTST. and their structures have been elucidated as 3-O-alpha-L-arabinofuranosyl (1-->2)-beta-D-glucopyranosyl jujubogenin (1), 3-O-beta-D-glucopyranosyl (1-->3)-alpha-L-arabinopyranosyl jujubogenin (2) and 3-O-beta-D-glucopyranosyl (1-->3)-alpha-L-arabinopyranosyl pseudojujubogenin (3) mainly on the basis of two dimensional (2D) NMR and other spectral analyses.