A new biologically active flavone glycoside from the seeds of Cassia Fistula (Linn.)

A new bioactive flavone glycoside 1 [mp 252-254°C, C₂₈H₃₂O₁₆, [M]⁺ 624 (EIMS)] was isolated from the acetone soluble fraction of the defatted seeds of Cassia fistula (Linn.). It was characterized as a new bioactive flavone glycoside 5,3',4'-tri-hydroxy-6-methoxy-7-O-f -L-rhamnopyranosyl-(1 M 2)-O- g -D-galactopyranoside by several colour reactions, spectral analysis and chemical degradations. Compound 1 showed anti-microbial activity.

Keywords:

• Cassia Fistula (Linn.)
• Leguminosae
• Flavonoid
• Antimicrobial Activity