Phytochemistry 2002-Dec
A diterpene quinone from the bark of Cryptomeria japonica.
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A diterpene, cryptoquinone, was isolated from the bark of Cryptomeria japonica, the structure, 7,11,14-trioxoabieta-8,12-diene, was established by spectral analyses and X-ray crystallography. This diterpene quinone showed moderate antifungal activities against Pyricularia orizae and Alternaria alternata, and cytotoxic activity against mouse lymphoid neoplasm (P388) cells with an IC(50) of 0.26 microg/ml.
