申请人:Nycomed Imaging AS
公开号:US05322681A1
公开(公告)日:1994-06-21
The invention provides novel condensed macrocyclic chelants of formula [X(CR.sup.2 R.sup.3).sub.n ].sub.m, (wherein each X independently represents an oxygen or sulphur atom or a group of formula NH, N(CR.sup.2 R.sup.3).sub.p R.sup.4, N(CR.sup.2 R.sup.3).sub.p Y, or N(CR.sup.2 R.sup.3).sub.n- N((CR.sup.2 R.sup.3).sub.p Y).sub.2 ; each Y independently represents a group COZ, SO.sub.2 Z, POZ.sub.2, CON(OH)R.sup.2, CH.sub.2 SR.sup.2, CS.sub.2 R.sup.2 or CSZ; each Z independently represents a group OR.sup.2 or NR.sup.2 R.sup.2 ; n is an integer of 1 to 4; m is an integer of 3 to 8; p is an integer of 1 to 3; each R.sup.2 independently represents a hydrogen atom or a C.sub.1-8 alkyl group optionally mono- or poly-substituted by hydroxyl or C.sub.1-8 alkoxy groups and at least one pair of R.sup.2 groups, in each pair one being from a (CR.sup.2 R.sup.3).sub. n moiety and the other being from a (CR.sup.2 R.sup.3).sub.n or (CR.sup.2 R.sup.3).sub.p moiety, together with the intervening atoms represents a 5 to 8 membered, saturated fused ring optionally containing one or more ring heteroatoms selected from nitrogen, oxygen and sulphur, said fused ring optionally being substituted by a group R.sup.1 ; each R.sup.1 independently represents a group R.sup.4 or a nitrogen-attached group (CR.sup.2 R.sup.3).sub.p Y; each R.sup.3 independently represents a hydrogen atom or a C.sub.1-8 alkyl or C.sub.1-8 alkoxy group optionally mono or poly substituted by hydroxy or C.sub.1-8 alkoxy groups; and each R.sup.4 independently represents a hydrogen atom, a halogen atom or a hydroxyl group or an optionally mono- or poly-hydroxylated C.sub.1-8 alkyl, C.sub.1-8 alkoxy, (C.sub.1-8 alkoxy)-C.sub.1-8 alkyl or poly-(C.sub.1-8 alkoxy)-C.sub.1-8 alkyl group, a sulphonate group or a group (CR.sup.2 R.sup.3).sub.p Y; with the proviso that at least 2 Y groups are present). These chelants are useful in the preparation of diagnostic and therapeutic agents, in particular chelate complexes suitable for use as contrast agents for diagnostic imaging techniques, e.g. MRI.
本发明提供了新型的紧凑大环螯合剂,其化学式为[X(CR.sup.2 R.sup.3).sub.n ].sub.m,其中每个X独立地表示氧或硫原子或化学式NH、N(CR.sup.2 R.sup.3).sub.p R.sup.4、N(CR.sup.2 R.sup.3).sub.p Y或N(CR.sup.2 R.sup.3).sub.n- N((CR.sup.2 R.sup.3).sub.p Y).sub.2的基团;每个Y独立地表示COZ、SO.sub.2 Z、POZ.sub.2、CON(OH)R.sup.2、CH.sub.2 SR.sup.2、CS.sub.2 R.sup.2或CSZ的基团;每个Z独立地表示OR.sup.2或NR.sup.2 R.sup.2的基团;n为1至4的整数;m为3至8的整数;p为1至3的整数;每个R.sup.2独立地表示氢原子或C.sub.1-8烷基,可选择地单烷基或多烷基取代羟基或C.sub.1-8烷氧基,并且在每对R.sup.2基团中,一个来自(CR.sup.2 R.sup.3).sub. n基团,另一个来自(CR.sup.2 R.sup.3).sub.n或(CR.sup.2 R.sup.3).sub.p基团,与介在原子一起形成5至8成员的饱和融合环,可选择地含有氮、氧和硫等一个或多个环杂原子,所述融合环可选择地被基团R.sup.1取代;每个R.sup.1独立地表示基团R.sup.4或与氮相连的基团(CR.sup.2 R.sup.3).sub.p Y;每个R.sup.3独立地表示氢原子或C.sub.1-8烷基或C.sub.1-8烷氧基,可选择地单烷基或多烷基取代羟基或C.sub.1-8烷氧基;每个R.sup.4独立地表示氢原子、卤素原子或羟基,或可选择地单烷基、C.sub.1-8烷氧基、(C.sub.1-8烷氧基)-C.sub.1-8烷基或多-(C.sub.1-8烷氧基)-C.sub.1-8烷基基团、磺酸基团或基团(CR.sup.2 R.sup.3).sub.p Y;但至少存在2个Y基团。这些螯合剂在制备诊断和治疗剂方面非常有用,特别是用作诊断成像技术的对比剂的螯合物复合物,例如MRI。