[A new chromone glycoside from Cassia siamea lam].

AIM

To study the chemical constituents of the stem of Cassia siamea.

METHODS

The compounds were isolated by chromatography on silica gel, and identified on the basis of spectral analysis.

RESULTS

Five compounds were isolated and identified as: beta-sitosterol (I), sucrose (II), n-octacosanol (III), 2-methyl-5-(2'-hydroxypropyl)-7-hydroxy-chromone-2'-O-beta-D-glucopyranoside (IV) and piceatannol (V).

CONCLUSION

Compound IV is a new compound. Compounds II, III and V were obtained from this plant for the first time.