FIELD: pharmaceutical industry. SUBSTANCE: phenoxylphenylacetic acid derivatives of formula: R1,R2,R3a,R3b wherein OR7 are hydrogen, F, Cl, Br, J, R1 and R2, or at adjacent carbon atoms are combined to form cyclic structure -Y-[C(R6)(R6)]s-Y-, wherein A is -C(R4)=C(R5)-C(R4)=C(R5)-, R4,R5,R6, s=1 or 2, Y is are hydrogen or pharmaceutically acceptable salts thereof are suitable as nonpeptide endotheline antagonists. EFFECT: improved properties of the title compounds. 14 cl, 101 ex, 3 tbl
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