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Diterpenes from the fruits of Vitex rotundifolia
1Research Institute of General Education and School of Agriculture, Kyushu Tokai University, Choyo 5435, Aso, Kumamoto 869-1404, Japan. mono@as.1.ktokai-u.ac.jp
Journal of Natural Products
|December 2, 1999
Abstract:
Eight new labdane-type diterpenes (1-8) were isolated from the fruit of Vitex rotundifolia along with two known abietane-type diterpenoids (9, 10), and their structures were characterized on the basis of spectroscopic data and X-ray crystallographic analysis. Among them, the abietane-type diterpenoid ferruginol (9) exhibited a stronger antioxidative activity than the standard antioxidant, 3-tert-butyl-4-hydroxyanisole (BHA), using a ferric thiocyanate method.