Chemistry and Biodiversity 2004-Jun
Cancer chemopreventive activity of serratane-type triterpenoids from Picea jezoensis.
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To search for cancer chemopreventive agents from natural sources, 13alpha,14alpha-epoxy-21alpha-methoxyserratan-3-one, 21alpha-methoxyserrat-13-en-3-one, and 21alpha-hydroxy-3beta-methoxyserrat-14-en-30-al isolated from the cuticle of Picea jezoensis (Sieb. et Zucc.) Carr. var. jezoensis (Pinaceae) were investigated for inhibitory effects in a two-stage mouse skin carcinogenesis test on mouse skin with 7,12-dimethylbenz[a]anthracene (DMBA) as initiator and 12-O-tetradecanoylphorbol-13-acetate (TPA) as promoter. 21Alpha-hydroxy-3beta-methoxyserrat-14-en-30-al and 13alpha,14alpha-epoxy-21alpha-methoxyserratan-3-one were found to exhibit strong antitumor-promoting activities in the in vivo carcinogenesis test.
