摘要:
The invention provides novel persistent free radicals useful in Overhauser MRI being triarylmethyl radicals having as at least one aryl group a group of formula (1) or (2), wherein each X which may be the same or different is an oxygen or sulphur atom or a group CO or S(O)n (where n is 1 to 3) with the proviso that at least one group X is a sulphur atom or an S(O)n group; R1 is a hydrogen atom or group of formula -M, -XM, -X-Ar2 where M is a water solubilising group, and Ar2 represents a 5-10 membered aromatic ring optionally substituted by a water solubilising group M; and each of the groups R7, which may be the same or different, is a hydrogen atom, or a hydrocarbon group or a water solubilising group M, or two groups R7 together with the atom to which they are bound represent a carbonyl group or a 5 to 8 membered cycloalkylidene, mono- or di-oxacycloalkylidene, mono or di-azacycloalkylidene or mono- or di-thiacycloalkylidene group optionally wit the ring attachment carbon replaced by a silicon atom, and R7 where it is other than hydrogen, is optionally substituted by a hydroxyl group, an optionally alkoxylated, optionally hydroxylated acyloxy or alkyl group or a water solubilising group M. The novel radicals have good stability, long relaxation times and good relaxivity.
摘要:
The invention provides iodinated bis phenyl compounds, useful as X-ray contrast agents, of formula (I) (wherein each C6R5 moiety may be the same or different; each R denotes a hydrogen or iodine atom or a group M, two or three non-adjacent R groups on each C6R5 moiety denoting iodine atoms and one, two or three R groups on each C6R5 moiety denoting M groups; X denotes a group providing a 1, 2 or 3 atom chain linking the two C6R5 groups, preferably where X is or contains in the bridging chain a carbonyloxy group each C6R5 group being a triodophenyl group or a group in which each R is other than hydrogen; and each M is independently a non-ionic hydrophilic moiety, M preferably being a non-ionic hydrophilic moiety comprising a monohydroxy- or polyhydroxy-alkyl group) and isomers, especially stereoisomers and rotamers, thereof.
摘要:
The invention provides iodinated bis phenyl compounds, useful as X-ray contrast agents, of formula (I) (wherein each C6R5 moiety may be the same or different; each R denotes a hydrogen or iodine atom or a group M, two or three non-adjacent R groups on each C6R5 moiety denoting iodine atoms and one, two or three R groups on each C6R5 moiety denoting M groups; X denotes a group providing a 1, 2 or 3 atom chain linking the two C6R5 groups, preferably where X is or contains in the bridging chain a carbonyloxy group each C6R5 group being a triodophenyl group or a group in which each R is other than hydrogen; and each M is independently a non-ionic hydrophilic moiety, M preferably being a non-ionic hydrophilic moiety comprising a monohydroxy- or polyhydroxy-alkyl group) and isomers, especially stereoisomers and rotamers, thereof.
摘要翻译:本发明提供了可用作式(I)的X射线造影剂的碘化双苯基化合物(其中每个C 6 R 5部分可以相同或不同;每个R表示氢或碘原子或M组,两个或三个非 在每个C 6 R 5部分上的相邻R基团表示碘原子和每个C 6 R 5部分上的一个,两个或三个R基团表示M基团; X表示提供连接两个C 6 R 5基团的1,2或3个原子链的基团,优选其中X是 或者在桥连链中含有羰氧基,每个C 6 R 5基团是三联苯基或其中每个R不是氢的基团;并且每个M独立地为非离子型亲水部分,M优选为非离子型亲水部分, 单羟基 - 或多羟基 - 烷基)和异构体,特别是其立体异构体和旋转异构体。