申请人:Guerbet S.A.
公开号:US05712389A1
公开(公告)日:1998-01-27
Poly(amino acid) derivatives, which are chelating agents of paramagnetic metal ions, in which at least 3 of the donor nitrogen atoms carry identical or different substituents, of formula CH (R.sub.1) --X, in which X represents CO.sub.2 R.sub.a, CONR.sub.b R.sub.c or P(R.sub.d)O.sub.2 H and R.sub.a, R.sub.b and R.sub.c, which are identical or different, represent H or optionally hydroxylated (C.sub.1 -C.sub.8)alkyl, R.sub.d represents OH, (C.sub.1 -C.sub.8)alkyl or (C.sub.1 -C.sub.8)alkoxy and R.sub.1 represents a hydrophilic group with a molecular weight greater than 200 containing at least 3 oxygen atoms, with the proviso that at least 3 of the X groups are optionally salified acid functional groups.
聚(氨基酸)衍生物,是顺磁金属离子的螯合剂,其中至少有3个供体氮原子携带相同或不同的取代基,其化学式为CH(R.sub.1)--X,其中X代表CO.sub.2R.sub.a,CONR.sub.bR.sub.c或P(R.sub.d)O.sub.2H,而R.sub.a、R.sub.b和R.sub.c是相同或不同的,代表H或可选择羟基化的(C.sub.1-C.sub.8)烷基,R.sub.d代表OH,(C.sub.1-C.sub.8)烷基或(C.sub.1-C.sub.8)烷氧基,R.sub.1代表具有分子量大于200的至少3个氧原子的亲水基团,但至少3个X基团是可选择盐化的酸功能基团。