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J Med Chem. 2008 Dec 25;51(24):7731-6. doi: 10.1021/jm800758s.

Search for inhibitors of bacterial and human protein kinases among derivatives of diazepines[1,4] annelated with maleimide and indole cycles.

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Vavilov Institute of General Genetics, 3 Gubkin Street, Moscow 119991, Russia.


Aminomethylation of 9b,10-dihydro-1H-indolo[1,7:4,5,6]pyrrolo[3,4:2,3][1,4]diazepino-[1,7-a]indole-1,3(2H)-diones or 1H-indolo[1,7:4,5,6]pyrrolo[3,4:2,3][1,4]diazepino[1,7-a]indole-1,3(2H)-diones resulted in dialkylaminomethyl derivatives. Alkylation of the nitrogen atom of maleimide moiety of polyannelated diazepines with 1,3-dibromopropane and subsequent reaction with thiourea or its N-alkyl derivatives gave isothiourea-carrying compounds. The compounds containing isothiourea moiety were active against individual human serine/threonine and tyrosine kinases at low micromolar concentrations. Dialkylaminomethyl derivatives of diazepines sensitized Streptomyces lividans with overexpressed aminoglycoside phosphotransferase type VIII (aphVIII) to kanamycin by inhibiting serine/threonine kinase(s) mediated aphVIII phosphorylation.

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