Novel flavanes from Livistona halongensis

Abstract

A study of the chemical constituents of a methanolic extract of the roots of Livistona halongensis (Arecaceae) led to the isolation of two new flavanes, 2S,3S-3,5,7,3′-tetrahydroxy-5′-methoxyflavane (1) and 3,7,3′-trihydroxy-5′-methoxyflavane 5-O-β-glucopyranoside (2), together with trans-3,5,3′,5′-tetrahydroxy-4-methoxystilbene, saccharose and β-sitosterol-3-O-β-glucopyranoside. The structures of these compounds were elucidated on the basis of spectroscopic data.