Patent AT-E401306-T1: [Translated] PYRROLE DERIVATIVE

A novel pyrrole derivative represented by the following formula (1) and a salt thereof: <CHEM> wherein R<1> means substituted alkenyl, etc.; R<2> means substituted benzoyl, etc.; and R<3> to R<5> each means hydrogen, alkyl, halogeno, etc. The derivative and salt have antidiabetic activity.