Liriodendrin, m. p. 269-270^0, C_(22) H_(46) O_Ω as one of the antihypertensive components was obtained from the cortex of Kalopanax pictum. Acid hydrolysis of liriodendrin yielided lirioresinol-A, -B and glucose. The stereochemistry of liriodendrin was established by the NMR spectrum of liriodrin octaacelate. The NMR spectrum of liriodendrin octaacetate showed that di-β-glucoside of lirioresinol-B type occurs in nature.