申请人:Dibra S.p.A.
公开号:US06417354B1
公开(公告)日:2002-07-09
1,4,7,10-tetraazacyclododecane-1,4-diacetic acid of formula (I):
as well as its chelated complex salts with bi-valent metal ions having atomic numbers from 20 to 31, 39, 42, 43, 44, 49, or from 57 to 83, as well as their salts with anions of physiologically acceptable organic acid selected from acetate, succinate, citrate, fumarate, maleate, oxalate, or with anions of inorganic acids selected from halo acids ions. The compounds are intermediates for preparing 1,4,7,10-tetraaza-cyclododecane chelating agents.
1,4,7,10-四氮杂环十二烷-1,4-二乙酸(化学式(I))及其与具有原子序数从20到31、39、42、43、44、49或从57到83的双价金属离子形成的螯合络合物盐,以及其与从乙酸盐、琥珀酸盐、柠檬酸盐、富马酸盐、马来酸盐、草酸盐中选择的生理上可接受的有机酸阴离子,或与从卤酸离子中选择的无机酸阴离子形成的盐。这些化合物是制备1,4,7,10-四氮杂环十二烷螯合剂的中间体。