申请人:Mallinckrodt Medical, Inc.
公开号:US05187264A1
公开(公告)日:1993-02-16
The invention relates to a method of preparing technetium chelate of the general formula ##STR1## wherein x is a sulphur atom or an imino group, Z is a hydrogen atom, a carboxy group, an alkoxycarbonyl group having 1-4 carbon atoms, an aminocarbonyl group, a sulpho group, an aminosulphonyl group or a carboxymethylaminocarbonyl group, Tc represents technetium-99m, R.sub.1 is a hydrogen atom or an alkyl group having 1 or 2 carbon atoms, and R.sub.2, R.sub.4 and R.sub.5 are equal or different and represent hydrogen atoms or branched or non-branched alkyl groups having 1-4 carbon atoms, which alkyl groups are optionally substituted with an amino group, a hydroxy group, a mercapto group, a halogen atom, a carboxy group or an aminocarbonyl group, with the proviso that R.sub.3, R.sub.4 and R.sub.5 do not all three of them represent hydrogen atoms; as well as water-soluble salts of these compounds. The invention also relates to a tripeptide compound to be used for preparing said chelate and to a kit comprising a composition of said tripeptide compound.
本发明涉及一种制备通式为##STR1##的锝螯合物的方法,其中x是硫原子或亚胺基,Z是氢原子、羧基、具有1-4个碳原子的烷氧基羰基基团、氨基羰基基团、磺酰基、氨基磺酰基或羧甲基氨基羰基基团,Tc代表锝-99m,R.sub.1是氢原子或具有1或2个碳原子的烷基基团,R.sub.2、R.sub.4和R.sub.5相等或不同,代表氢原子或具有1-4个碳原子的支链或非支链烷基基团,这些烷基基团可以选择性地被氨基基团、羟基、巯基、卤素原子、羧基或氨基羰基基团取代,但要求R.sub.3、R.sub.4和R.sub.5三者中不全是氢原子;以及这些化合物的水溶性盐。本发明还涉及一种三肽化合物,用于制备上述螯合物,以及包括所述三肽化合物组成的试剂盒。