FIELD: organic chemistry, chemical technology, pharmacy.
SUBSTANCE: invention describes novel compounds of the general formula (I): 
wherein R1 means quinolinyl possibly substituted with (C1-C5)-alkoxy-group, isoquinolinyl, quinoxalinyl, pyridinyl, pyrazinyl, benzyl possibly substituted with halogen atom, naphthalinyl, thiophenyl, furanyl, cinnolyl, phenylvinyl, quinolylvinyl or 4-oxo-4H-chromenyl possibly substituted with halogen atom, (C1-C5)-alkyl or (C1-C5)-alkoxy-group; R2, R5, R8 and R11 mean hydrogen atom; R3 and R4 mean halogen atom, (C1-C5)-alkoxy-group; R6 and R7 mean hydrogen atom (H) or (C1-C5)-alkyl or form in common radical -CH2-CH2-; R9 and R10 mean (C1-C5)-alkoxy-group; m and n mean a whole number from 0 to 4 independently; X means -CH2- or sulfur atom (S). Also, invention describes their pharmaceutically acceptable salts, a method for their preparing and pharmaceutical composition based on thereof. Proposed compounds are inhibitors of P-glycoprotein, enhance bioavailability of anti-cancer drug and can be used in medicine.
EFFECT: improved preparing method, valuable medicinal properties of compounds and pharmaceutical composition.
7 cl, 3 tbl, 33 ex
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