ORTHO-SUBSTITUTED NITROGEN-CONTAINING BIS-ARYL COMPOUNDS FOR USING AS POTASSIUM CHANNEL INHIBITORS AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEREOF

FIELD: organic chemistry, medicine, pharmacy. ^ SUBSTANCE: invention relates to new biologically active ortho-substituted nitrogen-containing bis-aryl compounds. Invention describes compounds of the formula (I): wherein A1, A2, A3, A4, A5, A6, A7 and A8 mean independently of one another nitrogen atom or -CH and wherein at least one or two (not above) these groups mean nitrogen atom; R(1) means -C(O)OR(9) or -COR(11) wherein R(9) and R(11) mean independently of one another CxH2x-R(14) wherein x has a value 0, 1, 2, 3 or 4 and R(14) means alkyl c 1, 3, 4, 5 or 6 carbon atoms, phenyl or isoxazolyl wherein phenyl and isoxazolyl are not substituted or substituted with 1, 2 or 3 substitutes chosen from the group consisting of F, Cl, Br, J, CF3, OCF3, alkyl with 1, 2, 3 or 4 carbon atoms and alkoxy-group with 1, 2, 3 or 4 carbon atoms; R(2) means hydrogen atom; R(3) means CyH2y-R(16) wherein y has a value 0, 1, 2, 3 or 4but y can't mean 0 if R(16) means -OR(17), and R(16) means alkyl with 1, 2, 3, 4, 5 or 6 carbon atoms, cycloalkyl with 3 carbon atoms, -OR(17), phenyl or pyridyl wherein phenyl and pyridyl are not substituted or substituted with 1, 2 or 3 substitutes chosen from the group consisting of F, Cl, Br, J and alkoxy-group with 1, 2, 3 or 4 carbon atoms; R(17) means hydrogen atom; or R(3) means -CHR(18)R(19) wherein R(18) means alkyl with 1, 2, 3, 4, 5 or 6 carbon atoms and R(19) means -CONH2; R(4) means hydrogen atom; R(30) and R(31) mean hydrogen atom, and their pharmaceutically acceptable salts also. Also, invention describes a pharmaceutical composition showing effect that inhibits K+-channel and comprising the effective amount of at least compound of the formula (I) and using compounds of the formula (I). Invention provides preparing new compounds possessing useful biological properties. ^ EFFECT: valuable medicinal properties of compounds and composition. ^ 10 cl, 8 tbl, 35 ex