3,8-Diamino-6-(3-carboxy-phenyl)-5-methyl-phenanthridinium; chloride 、
tert-butyl (S)-24-amino-3,7-bis((2-nitrophenyl)sulfonyl)-12,15,19-trioxo-13-(3-(3-((2,2,5,7,8-pentamethylchroman-6-yl)sulfonyl)guanidino)propyl)-3,7,11,14,18-pentaazatetracosanoate 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
1-羟基苯并三唑 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以50%的产率得到tert-butyl 2-[3-[3-[[(2S)-5-[[amino-[(2,2,5,7,8-pentamethyl-3,4-dihydrochromen-6-yl)sulfonylamino]methylidene]amino]-2-[3-[6-[[3-(3,8-diamino-5-methylphenanthridin-5-ium-6-yl)benzoyl]amino]hexanoylamino]propanoylamino]pentanoyl]amino]propyl-(2-nitrophenyl)sulfonylamino]propyl-(2-nitrophenyl)sulfonylamino]acetate;chloride