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Oryza sativa  L. (Family Poaceae) is cultivated in tropical regions as a staple food all over the world. The rice grain husk is considered as a tonic and administered orally to relieve dysentery. The air-dried seeds husks of  O. sativa  were exhaustively extracted with methanol in a Soxhlet apparatus. The concentrated methanol extract was adsorbed on silica gel and chromatographed on a silica gel column. The column was eluted with petroleum ether, chloroform and methanol successively to isolate four phytoconstituents characterised as 7-ketostigmasterol ( 1 ), 3β-benzyloxy-stigmast-7-one-22-en-19-oic acid 29-ethyleneglycol ether ( 2 ), sesquaurs-11-en- 2β, 3β,5α-triol ( 3 ) and 2′-(1′′β-hydroxypropyl)-7,4′-dimethoxyapigenin ( 4 ). These phytoconstituents were identified on the basis of spectral data analysis.

Chemical constituents from the seed husks of Oryza sativa L.