The present invention provides a pharmaceutical agent having cholesteryl ester transfer protein inhibitory action and useful as a blood lipid lowering agent and the like. The present invention relates to a compound represented by the formula
wherein Ar1 is an aromatic ring group optionally having substituents, Ar2 is an aromatic ring group having substituents, OR'' is an optionally protected hydroxyl group, R is an acyl group, R' is a hydrogen atom or a hydrocarbon group optionally having substituents, or a salt thereof, and a pharmaceutical composition containing a compound of the formula (I) or a salt thereof or a prodrug thereof.
The present invention provides a pharmaceutical agent having cholesteryl ester transfer protein inhibitory action and useful as a blood lipid lowering agent and the like. The present invention relates to a compound represented by the formula
1
wherein Ar
1
is an aromatic ring group optionally having substituents, Ar
2
is an aromatic ring group having substituents, OR″ is an optionally protected hydroxyl group, R is an acyl group, R′ is a hydrogen atom or a hydrocarbon group optionally having substituents, or a salt thereof, and a pharmaceutical composition containing a compound of the formula (I) or a salt thereof or a prodrug thereof.