A new isoflavone glycoside from Ceiba pentandra (L.) Gaertner.

From the 80% EtOH extract of the bark of Ceiba pentandra (L.) GAERTNER, a new isoflavone glycoside was isolated along with known isoflavones, vavain and vavain glucoside. The structure was elucidated by spectroscopic analysis as 5-hydroxy-7,4′,5′-trimethoxyisoflavone 3′-O-α-L-arabinofuranosyl(1→6)-β-D-glucopyranoside.