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- W2020147864 abstract "A rationale based upon coenzyme Q10 (CoQ10, ubiquinone) for the synthesis of potential antitumor agents constitutes a new approach in the search toward chemotherapy of cancer. The antitumor activities of 38 alkyl-1,4-benzoquinones, analogs of coenzyme Q, 24 of which are new compounds, are described. The 10 best antitumor analogs of CoQ all showed long-term cures of Walker carcinosarcoma 256 in rats. Particularly impressive were the 6-n-octylmercapto-5-chloro-2,3-dimethoxy-1,4-benzoquinone (NSC 252188), which cured six out of six rats with % TC = 584 at 3.13 mg/kg, 6-phytyl-5-hydroxy-2,3-dimethoxy-1,4-benzoquinone (NSC 277818) (four out of four cures, % TC = 923 at 50 mg/kg), and 5-phytyl-2,3-dimethoxy-1,4-benzoquinone (NSC 276371) (three out of six cures, % TC = 789 at 0.78 mg/kg). In general, a 5-chloro or 5-hydroxy group on the quinone nucleus or a side chain with unsaturation and branching, such as the phytyl side chain of NSC 277818 and NSC 276371, seemed to increase antitumor activity. Although a perfect correlation was not to be expected, many of the most potent antitumor analogs were also among the best in vitro inhibitors of the mitochondrial CoQ10-enzymes, succinoxidase, and NAD oxidase." @default.
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- W2020147864 date "1978-09-01" @default.
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- W2020147864 title "Synthesis, enzyme inhibition, and antitumor activity of new 1,4-benzoquinone analogs of coenzyme Q10" @default.
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- W2020147864 doi "https://doi.org/10.1016/0045-2068(78)90028-7" @default.
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