Phytochemical investigation of the methanolic extract of the tubers of Cyperus rotundus L. (Cyperaceae) led to the isolation of one new keto alcohol characterized as n-tricont-1-ol-21-one, two new triterpenic glucosides 18α-H-urs- 12-en-3 β-ol- β-D-glucuronopyranoside (18-epi-α-amyrin glucuronoside) and 3 β-hydroxyolean-12-en-28-oic acid α-D-arabinofuranoside (oleanolic acid arabinoside) along with the known compounds Urs-12-en-3β–ol-3-β-Dglucopyranoside (α -Amyrin glucopyranoside), Olean-12-en-3β–ol-3-β-D- glucopyranoside (β -Amyrin glucopyranoside). The structures of all these phytoconstituents have been elucidated on the basis of 1H NMR, 13C NMR, and FAB MS spectral data analysis and chemical reactions.
