乙酸酐 、
1-<4-(Aminocarbonyl)imino-3,4-dihydro-3-methyl-2-oxo-1(2H)-pyrimidinyl>-1,6-didesoxy-6-serylamino-4-thioheptofuranuronsaeure 以
吡啶 为溶剂,
反应 16.0h,
以45%的产率得到2-O-Acetyl-1-<4-(aminocarbonyl)imino-3,4-dihydro-3-methyl-2-oxo-1(2H)-pyrimidinyl>-1,5,6-tridesoxy-6-(N,O-diacetylL-seryl)amino-4-thio-β-D-xylo-hept-5-enofuranurono-7,3-lacton