4-(1,3-dioxoisoindol-2-yl)-N-[2-(pyrrolidine-1-carbonyl)phenyl]butanamide

4,5,6,7-tetrahydrocyclopenta[b]pyran-2(3H)-one

3-(2-氧代环戊基)丙酸

3-(1-bromo-2-oxo-cyclopentyl)-propionic acid

醋酸叔丁酯