tert-butyl N-({3-[(6-fluoro-4-oxo-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidin]-1'-yl)carbonyl]-7-methoxy-1-benzothiophen-2-yl}carbamoyl)-D-alaninate 在
三氟乙酸 作用下,
反应 1.0h,
以94%的产率得到N-({3-[(6-fluoro-4-oxo-3,4-dihydro-1'H-spiro[chromene-2,4'-piperidin]-1'-yl)carbonyl]-7-methoxy-1-benzothiophen-2-yl}carbamoyl)-D-alanine