10-[4-(benzyloxycarbonyl)-1-ethyl-2-oxo-3-azabutyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid tri(tert-butyl) ester 在
palladium 10% on activated carbon 作用下,
以
异丙醇 为溶剂,
反应 12.0h,
以99%的产率得到10-(4-carboxy-1-ethyl-2-oxo-3-azabutyl)-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid tri(tert-butyl) ester