Provided is a novel compound which has an NK1 receptor antagonistic action and which is useful in the prevention and treatment of nausea and vomiting accompanying the administration of antineoplastic drugs, which have a diminished CYP3A4 inhibitory action compared to aprepitant. That is to say, the present invention pertains to a cyclohexyl-pyridine derivative represented by formula (I), or a pharmacologically acceptable salt thereof. In the formula, ring A is 4-fluoro-2-methyl phenyl or the like, X is a hydrogen atom or the like, R1 is a carboxymethyl or the like, R2 is an alkyl or the like, Y is from 0-2 or the like, U is -N(CH3)COC(CH3)2-3,5- bis(trifluoromethyl)phenyl or the like.
