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Abstract
A rare type of phenolic compound, namely, planchol E (1), was isolated from the cones and seeds of Pinus yunnanensis together with 16 known abietane diterpenoids (2–17). The structure of planchol E was established on the basis of extensive spectroscopic analysis, and it was found that the new compound did not show cytotoxic activity against several cancer cell lines.
Acknowledgements
This work was financially supported by National Natural Science Foundation of China (No. 30860365), the ‘Western Light’ Program of Chinese Academy of Sciences, and Natural Product Library Program of BioBioPha.