Bicyclic pyrrole derivatives useful as agonists of gpr120

A compound of formula (I)

• wherein
• R1 is selected from the group consisting of phenyl and pyridinyl;
• wherein the phenyl or pyridinyl is optionally substituted with one to three substituents independently selected from the group consisting of halogen, cyano, carboxy, —C(O)O—(C1-4alkyl), —C(O)—(C1-4alkyl), C1-4alkyl, fluoro substituted C1-4alkyl, C1-4 alkoxy and fluoro substituted C1-4alkoxy;
• R2 is selected from the group consisting of hydrogen, halogen, cyano, C1-4alkyl and fluoro substituted C1-4alkyl;
• a is in integer from 0 to 3;
• each R3 is independently selected from the group consisting of halogen, C1-4alkyl, fluoro substituted C1-4alkyl, and cyano;
• provided that when a is 2 or 3, then only one R3 can be cyano;
• R4 is selected from the group consisting of hydrogen and methyl;
• R5 is selected from the group consisting of —CH2OH and —C(O)OH;
• or a pharmaceutically acceptable salt thereof.