A series of 3,3'-dindolylmethane derivatives have been synthesized and their structures were characterized in solid state by C-13 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 mu M. (C) 2009 Elsevier Masson SAS. All rights reserved.
Synthesis of Unnatural Arundines Using a Magnetically Reusable Copper Ferrite Catalyst
We report a method for copper ferrite-catalyzed coupling of indoles and N , N -dimethylacetamide (DMA) to afford Arundine derivatives. Halogen, methoxy, boronate ester, and trimethylsilyl functionalities are compatible with reaction conditions. Unprotected or sterically hindered indoles are also competent substrates. Indoles containing competitively reactive pyrazoles deliver the desired products in