The present invention relates to pyrrolidinone derivatives. The pyrrolidinone derivatives are GPR119 modulators and useful for the prevention and/or treatment of diabetes, obesity, dyslipidemia and related disorders. The invention furthermore relates to the use of pyrrolidinone derivatives as active ingredients in pharmaceuticals, and pharmaceutical compositions comprising them.本發明係有關一種吡咯啶酮衍生物。該吡咯啶酮衍生物係GPR119調控劑,且適用於預防與/或治療糖尿病、肥胖、血脂異常及相關疾病。本發明進一步有關一種以吡咯啶酮衍生物做為醫藥之活性成份之用途,及含其之醫藥組成物。