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
