Chemical constituents from the roots of Cassia fistula L.

Abstract

The chemical constituents in the roots of Cassia fistula L. were investigated with column chromatography. Nine teen compounds including seven anthraquinones, chrysophanol (1), physcion (2), emodin (3), aloe-emodin (4), 11-acetylaloe-emodin (5), rhein (6), citreorosein (7); four flavan-3-ols, (-)-epiafzelechin (8), (+)-afzelechin (9), (-)-epicatechin (10), (+)-catechin (11); three sterols, a mixture of β-sitosterol (12) and stigmasterol (13), β-sitosterol-3-O-β-glucopyanoside (14); one triterpene, lupeol (15); and four gly cer ides, a mixture of glycerol-1-tetraeicosanoate (16) and glycerol-1-pentaeicosanoate (17), trimyristin (18), and glyceryl trilinolate (19) were determined by spectroscopic analysis.