INDOLOCARBAZOLE DERIVATIVES, PROCESSES FOR THE PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

Novel indolocarbazole derivatives of the general formula I in which R and R are identical or different and denote hydrogen, a straight-chain or branched alkyl group having 1 to 6 C atoms, a benzyl group, an unsubstituted or substituted aminoalkyl group having up to 12 C atoms, an alkoxycarbonylalkyl radical having up to 6 C atoms, a radical -CH2-CO-NR R in which R and R are identical or different and represent hydrogen, an alkyl group having 1 to 4 C atoms or a benzyl group, or R and/or R denote a haloalkyl, hydroxyalkyl or alkoxyalkyl radical each having up to 6 C atoms, a benzoyloxyalkoxyalkyl, acetyloxyalkoxyalkyl or hydroxyalkoxyalkyl radical each having up to 11 C atoms, or an acyl group having 1 to 4 C atoms or R and R together denote an alkylene group having 2 to 4 C atoms, optionally substituted by hydroxyl, C1-4-alkoxy or amino, X and Y are either identical and in each case both denote hydrogen, or X and Y are different, one of the radicals X or Y representing hydrogen and the other of the two radicals denoting a hydroxyl or an alkoxy group having up to 4 C atoms, with the proviso that not all radicals R , R , X and Y simultaneously denote hydrogen, and their pharmacologically acceptable salts, process for the preparation of the compounds I or of regioisomer mixtures of two of these compounds I and medicines containing at least one of the compounds I.