Sy L K, Brown G D
Chemistry Department, The University of Hong Kong, Pokfulam Road, Hong Kong.
J Nat Prod. 1998 Jul;61(7):907-12. doi: 10.1021/np980054a.
Twelve novel (1, 2, 4, 5, 7-14) and two known (3, 6) abietane diterpenes and have been isolated from the aerial parts of Illicium angustisepalum. These diterpenes are unusual in that they are oxygenated at the axial C-19 position of the gem-dimethyl group rather than the equatorial C-18 position.
从狭萼八角的地上部分分离出了12种新的（1、2、4、5、7 - 14）和2种已知的（3、6）枞酸型二萜。这些二萜的不同寻常之处在于，它们在偕二甲基的轴向C - 19位置而非赤道面的C - 18位置被氧化。
