3-(二氢-2-氧代-3(2H)-呋喃亚基)-3,4-二氢-2(1H)-喹喔啉酮

(3Z)-3-(2-氧代四氢呋喃-3-亚基)-1,4,4a,5,6,7,8,8a-八氢喹喔啉-2-酮

ethyl 5-bromo-2-oxopentanoate

methyl 5-bromo-2-oxopentanoate