(1,5-dihydro-4-methoxy-2-oxo-2H-pyrrol-1-yl)acetamide

2-(4-羟基-2-氧代吡咯烷-1-基)乙酸甲酯

4-acetoxy-N-cyanomethyl-2-pyrrolidinone

4-acetoxy-N-methoxycarbonylmethyl-2-pyrrolidinone

2-(4-(benzyloxy)-2-oxopyrrolidin-1-yl)acetamide