(R)-2-(5-(3-methylureido)-2',4'-dioxo-2,3-dihydrospiro[indene-1,5'-oxazolidin]-3'-yl)acetic acid 、
7-cyclopropyl-6,7,8,9-tetrahydro-5H-pyrido[4,3-c]azepine 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以60 mg的产率得到1-[(5R)-3-[2-(7-cyclopropyl-5,7,8,9-tetrahydropyrido[4,3-c]azepin-6-yl)-2-oxoethyl]-2,4-dioxospiro[1,3-oxazolidine-5,1'-2,3-dihydroindene]-5'-yl]-3-methylurea