4-氧代四氢呋喃-3-羧酸乙酯

6-溴-2-苯并呋喃羧酸乙酯

2-羟基-1-(4-甲基-1-哌嗪基)乙酮

3-氨基呋喃并2,3-c吡啶-2-羧酸乙酯

3-naphthalen-1-yl-1,3-oxazolidine-2,4-dione