N-{4-[5-(2,4-diamino-6(1H)-pyrimidinon-5-yl)-1-(dimethylhydrazono)pent-2-yl]benzoyl}-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamic acid hexa-tert-butyl ester 在
copper dichloride 作用下,
以
四氢呋喃 、 phosphate buffer 为溶剂,
反应 1.5h,
以48%的产率得到N-{4-[4-(2,4-diamino-6(1H)-pyrimidinon-5-yl)-1-formyl-but-2-yl]benzoyl}-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamyl-L-γ-glutamic acid hexa-tert-butyl ester