(-)-Saframycin A and its nineteen analogues were prepared from L-tyrosine in 24 steps, and their structures were confirmed through NMR and HRMS. The cytotoxicities of these compounds were tested against HCT-8, BEL-7402, Ketr3, A2780, MCF-7, A549, BGC-803, Hela, HELF and KB cell lines. The IC(50) values of the cytotoxicity of most compounds were at the level of nM. Compound 7d with 2-furan amide side chain showed the most potent cytotoxicity of all these compounds with an average IC(50) value of 6.06 nM.
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