Cancer preventive agents, Part 2: Synthesis and evaluation of 2-phenyl-4-quinolone and 9-oxo-9,10-dihydroacridine derivatives as novel antitumor promoters |
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Authors: | Nakamura Seikou Kozuka Mutsuo Bastow Kenneth F Tokuda Harukuni Nishino Hoyoku Suzuki Madoka Tatsuzaki Jin Morris Natschke Susan L Kuo Sheng-Chu Lee Kuo-Hsiung |
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Institution: | Natural Products Laboratory, School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA. |
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Abstract: | 2-Phenyl-4-quinolone and 9-oxo-9,10-dihydroacridine derivatives were synthesized and screened as potential antitumor promoters by examining the ability of the compounds to inhibit Epstein-Barr virus early antigen (EBV-EA) activation induced by the tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) in Raji cells. Interestingly, compounds 14, 15, and 17 showed similar inhibitory effects (89-92%, 66-69%, and 24-29% at 1000, 500, and 100 mol ratio to TPA, respectively) against EBV-EA with potencies comparable to those of glycyrrhetic acid, a known natural antitumor-promoter. |
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