3-{[(5-chlorothiophen-2-yl)formamido]methyl}-1-oxo-7-(2-oxopiperidin-1-yl)-1H,3H,3aH,4H,5H-[1,3]oxazolo[3,4-a]quinoxaline-5-carboxylic acid t-butyl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
以95.3%的产率得到5-chloro-N-((1-oxo-7-(2-oxopiperidin-1-yl)-3,3a,4,5-tetrahydro-1H-oxazolo[3,4-a]quinoxalin-3-yl)methyl)thiophene-2-carboxamide