1-[(2-amino-6-methoxy-1-benzothiophen-3-yl)carbonyl]-4'-oxo-3',4'-dihydrospiro[piperidine-4,2'-thiochromene]-6'-carbonitrile 、
乙酸酐 在
吡啶 作用下,
反应 2.0h,
以88%的产率得到N-{3-[(6'-cyano-4'-oxo-3',4'-dihydro-1H-spiro[piperidine-4,2'-thiochromen]-1-yl)carbonyl]-6-methoxy-1-benzothiophen-2-yl}acetamide