Chemical constituents from Rhynchotechum ellipticum

The column chromatographic techniques were applied to isolate the constituents.The spectroscopie methods were used to identify the structures.Six compounds were isolated from the methyl hydroxide extract of Rhynchotechum ellipticumrbus,whose structures were elucidated as β-sitosterol(1),ursolic acid(2),stigmasterol(3),3-hydroxy-12-oleanane-3-O-β-D-glucopyranoside(4),β-daucosterol(5),octadecanoic acid(6).Compounds 1-6 were isolated for the first time from Rhynchotechum genus.