Antioxidative 7-oxodehydropodocarpane-type trinorditerpenes from the bark of Taiwania cryptomerioides

作者：Kuo YHN^*; Chien SC; Kuo CC

来源：Planta Medica, 2002, 68(11): 1020-1023.

DOI：10.1055/s-2002-35648

• Taiwania cryptomerioids
• Taxodiaceae
• podocarpane
• antioxidative activity

Five new 7-oxopodocarpane-type trinorditerpenes together with 1beta,13,14-trihydroxy-8,11,13-podocarpatrien-7-one (1) were isolated from the bark of Taiwania cryptomerioides. By using NMR and other spectral methods, the structures of five new compounds, 14-hydroxy-13-methoxy-8,11,13-podocarpatriene-3,7-dione (2), 1beta,14-dihydroxy-13-methoxy-8,11,13-podocarpatrien-7-one (3), 13,14-dihydroxy-8,11,13-podocarpatriene-3,7-dione (4), 30,13,14-trihydroxy-8,11,13-podocarpatrien-7-one (5), and 1beta,13,14-trihydroxy-8,11,13-podocarpatriene-2,7-dione (6), were elucidated. Compounds 1, 4, 5, and 6 exhibited strong antioxidative activity.