BOC-甘氨酸 、 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
三乙胺 作用下,
反应 2.0h,
以54%的产率得到N-[2-[13-[4-[13-[4-[13-[2-[[1-hydroxy-2-[[hydroxy-[(2-methylpropan-2-yl)oxy]methylidene]amino]ethylidene]amino]ethyl]-5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),2,4(16),8,10-pentaen-6-yl]-2,3,5,6-tetramethylphenyl]-5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),2,4(16),8,10-pentaen-6-yl]-2,3,5,6-tetramethylphenyl]-5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1(15),2,4(16),8,10-pentaen-6-yl]ethyl]-2-[[hydroxy-[(2-methylpropan-2-yl)oxy]methylidene]amino]ethanimidic acid