ethyl 5-methoxy-2,3-diphenylindole-1-carboxylate

ethyl 5-ethoxy-1,3-oxazole-4-carboxylate

ethyl 4-methyl-2-oxoquinoline-1-carboxylate

ethyl 6-iodopyridine-3-carboxylate

N-(乙氧羰基)-N-(2-乙氧基-2-氧代乙基)-Β-丙氨酸乙酯