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Novel inhibitors of epidermal growth factor receptor: (4-(Arylamino)-7H-pyrrolo[2,3-d]pyrimidin-6-yl)(1H-indol-2-yl)methanones and (1H-indol-2-yl)(4-(phenylamino)thieno[2,3-d]pyrimidin-6-yl)methanones. 2012
Thomas Beckers, and
Andreas Sellmer, and
Emerich Eichhorn, and
Herwig Pongratz, and
Christoph Schächtele, and
Frank Totzke, and
Gerhard Kelter, and
Rebekka Krumbach, and
Heinz-Herbert Fiebig, and
Frank-D Böhmer, and
Siavosh Mahboobi
Department of Pharmaceutical Chemistry I, University of Regensburg, D-93040 Regensburg, Germany.
Several members of the quinazoline class of known tyrosine kinase inhibitors are approved anticancer agents, often showing selectivity for receptors of the HER/ErbB-family. Combining structural elements of this class with the bisindolylmethanone-structure led to a series of novel compounds. These compounds inhibited EGFR in the nanomolar range. Moreover, inhibition of EGFR autophosphorylation in intact A431 cells was shown, with IC(50) values ranging form 0.3-1μM for compound 42, and 0.1-0.3μM for 45. In a panel of 42 human tumor cell lines the sensitivity profile of the novel compounds was shown to be similar to that of the quinazoline class of tyrosine kinase inhibitors lapatinib and erlotinib (Tarceva®).
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