2-[18-(2,7-Difluoro-3-hydroxy-6-oxoxanthen-9-yl)-2,5,8,11-tetraoxa-14-azabicyclo[13.4.0]nonadeca-1(15),16,18-trien-14-yl]acetic acid 、 O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 2.0h,
生成 (2,5-Dioxopyrrolidin-1-yl) 2-[18-(2,7-difluoro-3-hydroxy-6-oxoxanthen-9-yl)-2,5,8,11-tetraoxa-14-azabicyclo[13.4.0]nonadeca-1(15),16,18-trien-14-yl]acetate