| 摘要 |
Biphenyl derivatives represented by the following formula (1): wherein R<1 >represents a C5-7 alkyl group, R<2 >represents a substituted or unsubstituted aromatic hydrocarbon, or cycloalkyl group, R<3 >represents a tetrazolyl group, -NHCOCF3, -NHSO2CF3 or -SO2NHCONHR<4 >in which R<4 >represents a substituted or unsubstituted aromatic hydrocarbon group, and Z represents a single bond, a C1-4 alkylene group or -SO2NH-, and salts thereof; and ACAT inhibitors and medicines containing them as active ingredients. The compounds according to the present invention possess excellent ACAT inhibitory activities, and are useful as preventives and/or therapeutics for diseases cased by the enhancement of ACAT activity, for example, hypercholesterolemia, atherosclerosis and the like.
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