N-6-aminocaproic acid-N'-{4'-amino-4'-[2''-tert-(butoxycarbonyl)ethyl]-heptanoic acid-di-tert-butyloate}-amide 、
3,4,9,10-苝四羧酸二酐 在
咪唑 、 zinc diacetate 作用下,
反应 2.0h,
以78.5%的产率得到Ditert-butyl 4-[6-[18-[6-[[1,7-bis[(2-methylpropan-2-yl)oxy]-4-[3-[(2-methylpropan-2-yl)oxy]-3-oxopropyl]-1,7-dioxoheptan-4-yl]amino]-6-oxohexyl]-6,8,17,19-tetraoxo-7,18-diazaheptacyclo[14.6.2.22,5.03,12.04,9.013,23.020,24]hexacosa-1(23),2,4,9,11,13,15,20(24),21,25-decaen-7-yl]hexanoylamino]-4-[3-[(2-methylpropan-2-yl)oxy]-3-oxopropyl]heptanedioate