alexa Synthesis and cytotoxic activity of carboxamide derivatives of benzo[b][1,6]naphthyridines.
Chemistry

Chemistry

Medicinal Chemistry

Author(s): Deady LW, Rodemann T, Zhuang L, Baguley BC, Denny WA

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Abstract The reaction of 4-dimethylaminomethylene-6-methyl-4H-pyrano[4,3-b]quinoline-1,3-dione with a range of primary amines gave rise to a series of 2-substituted 6-methyl-1-oxo-1,2-dihydrobenzo[b][1,6]naphthyridine-4-carboxylic acids. The derived 4-N-[2-(dimethylamino)ethyl]carboxamides were tested for growth inhibitory properties against murine P388 leukemia, Lewis lung carcinoma (LLTC), and human Jurkat leukemia cell lines. Most compounds were potent cytotoxins, with some having IC(50) values less than 10 nM. Five were tested in vivo against subcutaneous colon 38 tumors in mice, and a single dose (3.9 mg/kg) proved to be curative for the 2-methyl and 2-(3,4-dimethoxyphenyl) derivatives in this refractory model. This article was published in J Med Chem and referenced in Medicinal Chemistry

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