A New Stilbene from Cercis chinensis Bunge.

To study new natural products, we used ODS (YMC, Kyoto, Japan) and silica gel column chromatography to separate compounds in Cercis chinensis Bunge (Leguminosae). A new stilbene, trans-3, 5, 3′, 4′-tetrahydroxy-4-methylstilbene ( 1), along with 10 known compounds, namely piceatannol ( 2), dihydromyricetin ( 3), catechin ( 4), dihydrorobinetin ( 5), menisdaurin ( 6), lithospermoside ( 7), teatannin ( 8), dasycarponin ( 9), β-sitosterol ( 10), and daucosterin ( 11), was isolated from C. chinensis. Their structures were elucidated on the basis of spectroscopic evidence. Compounds 2–6 and 9 were isolated from the genus Cercis Linn. for the first time. (Managing editor: Wei) [ABSTRACT FROM AUTHOR]