| abstract |
The present invention relates to: a compound represented by chemical formula (1), a pharmaceutically acceptable salt thereof, a hydrate, a solvate, a prodrug, a tautomer, an enantiomer, or a pharmaceutically acceptable diastereomer, a method for preparing same, and a pharmaceutical composition containing same and having effects of treating or preventing metabolic diseases. In chemical formula (1), R1 to R3 and X1 to X4 are the same as defined in claim 1. |