STUDIES ON THE TAXANE DITERPENES OF THE HEART WOOD FROM TAXUS MAIREI

A new taxane diterpene(1) and three known taxane diterpenes (2, 3, 4) were isolated from the heartwood of Taxus mairei grown in Fujian province of China and identified as 1-dehydroxy-baccatin Ⅵ(1),baccatin Ⅵ(2),1-dehydroxybaccatin Ⅳ(3),and taxinne J (4) on the basis of spectral data.