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Diterpenoids from the leaves of Juniperus chinensis var. kaizuka
1Department of Food Nutrition, Chung-Hwai College of Medical Technology, Tainan 717, Taiwan, Republic of China. cklee@mail.hwai.edu.tw
Journal of Natural Products
|April 28, 2001
Abstract:
Two diterpenoids based on novel carbon skeletons, namely, 8,19-dioxo-8,14-seco-chinan-14,11-olide (1) and 8-oxo-8,14-seco-abiet-12-en-14,19-dial (2), have been isolated, together with two new abietane diterpenoids, 13 beta,14 beta-epoxyabiet-7-en-19,6 beta-olide (3) and 7 beta-hydroxyabieta-8,11,13-trien-19-al (4), from the leaves of Juniperus chinensis. Their structures were determined by spectroscopic methods, including 2D NMR, and, in the case of 1, X-ray crystallographic analysis.