Indol derivatives, the method for preparing thereof and composition for the prevention and treatment of metabolic disorder containing the same as an active ingredient

An indole derivative represented by the following Chemical Formula 1 or a pharmaceutically acceptable salt thereof:

• wherein,
• R1 is one selected from a group consisting of COORa, CONRbRc and C1˜C4 alkyl,
• wherein Ra is H or C1˜C4 alkyl, and
• Rb and Rc are independently selected from a group consisting of C1˜C5 alkyl bearing a 5-7 atom-membered heteroalkyl group containing N, O or S or a 5-7 atom-membered heterocyclic group containing N, O or S;
• H;
• and C1˜C5 alkyl;
• R2 is selected from a group consisting of C5˜C7 aryl C1˜C5 alkyl, di-C1˜C5 alkylamino C1˜C5 alkyl, C1˜C5 alkylcarbonyl, C1˜C5 alkyl C1˜C5 alkoxycarbonyl, C5˜C7 aryl C1˜C5 alkylsulfonyl, and thiophene C1˜C5 alkylsulfonyl;
• and
• the symbol designates a single bond or a double bond.