5-(2-甲氧基-2-氧代乙基)-1-(4-硝基苯基)-1H-1,2,3-噻唑-4-羧酸甲酯

5-hydroxy-4-methoxy-1-methyl-3H-pyridine-2,6-dione

甲基(5-氧代-4,5-二氢-1,2-恶唑-3-基)乙酸酯

methyl 2-[2-(2-oxoethyl)-1,3-dioxolan-2-yl]acetate

二甲基4-[2-(苄氧基)-4-氟苯基]-2,6-二异丙基-3,5-吡啶二羧酸酯