[Chemical constituents of Notopterygium forbesii Boiss]

Nine compounds were isolated from the under-ground part of Notopterygium forbesii. On the basis of physicochemical properties and spectroscopic analysis, they were identified as phellopterin, isoimperattorin, notopterol, nodakenitin, nodakenin, 6-O-trans-feruoylnodakenin, p-hydroxyphenethyl anisate, pregnenolone and beta-sitosteroi, of which phellopterin was obtained from the plant of Notopterygium genus for the first time.