Novel 3,3′-diindolylmethane derivatives: Synthesis and cytotoxicity, structural characterization in solid state

A series of 3,3′-dindolylmethane derivatives have been synthesized and their structures were characterized in solid state by 13C CP/MAS NMR and two of them by X-ray diffraction measurements. They exhibited well expressed cytotoxicity against human melanoma cell lines. Derivatives bearing fluoro, bromo, iodo, and nitro substituents in indole or benzene rings caused 50% inhibition of the viability of ME18 and ME18/R cell lines at concentration ranging 9.7–17.3 μM.

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