4-bromoacetyl-2,3,4,5-tetrahydro-1,4-benzothiazepine 、 1-(2',4'-dioxo-2,3-dihydrospiro[indene-1,5'-oxazolidin]-5-yl)-3-methylurea 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
生成 1-[(5S)-3-[2-(3,5-dihydro-2H-1,4-benzothiazepin-4-yl)-2-oxoethyl]-2,4-dioxospiro[1,3-oxazolidine-5,1'-2,3-dihydroindene]-5'-yl]-3-methylurea 、 1-[(5R)-3-[2-(3,5-dihydro-2H-1,4-benzothiazepin-4-yl)-2-oxoethyl]-2,4-dioxospiro[1,3-oxazolidine-5,1'-2,3-dihydroindene]-5'-yl]-3-methylurea