Isolation of 6-Hydroxydehydroabietinol and Hinokiol from the Leaves of Torreya nucifera Sieb. et Zucc

Abstract

6-Hydroxydehydroabietinol and hinokiol were isolated from the non-steam-volatile frac-tion of the leaves of Torreya nucifera Sieb. et Zucc. (Taxaceae) (Japanese name “Kaya”). The former was also isolated from the immature fruits of the same plant. This is the first report of the isolation of 6-hydroxydehydroabietinol from a natural source. This compound was prepared previously and reported to show marked estrogenic activity.