申请人:Nycomed Imaging AS
公开号:US05631368A1
公开(公告)日:1997-05-20
The present invention relates to tribenzylcyclen compounds of formula I ##STR1## (where R is hydrogen, or a C.sub.1-12 alkyl group optionally substituted by hydroxy, alkoxy or aryl groups or R is an amphiphilic aralkyl group comprising a N, S, O or P interrupted C.sub.2-25 alkylene chain, e.g. a polyalkylene oxide chain or R provides a bridge to a second tribenzylcyclen group, but with the proviso that R is other than benzyl; X is CHR.sub.1, or where R is hydrogen two X groups may each represent CO groups; and R.sub.1 is hydrogen, a C.sub.1-6 alkyl group optionally substituted by hydroxy, alkoxy or carboxy groups or an aralkyl group having 1 to 6 carbons in the alkyl moiety and optionally substituted in the aryl moiety by alkyl, alkoxy, hydroxy or isothiocyanate groups). These compounds are useful in the preparation of DO3A, N-substituted-1,4,7,10-tetraazacyclododecane-N',N",N"'-triacetic acids, and the phosphonic acid analogs.
本发明涉及式I的三苄基环己烷化合物 ##STR1##(其中R为氢,或者是一个C.sub.1-12烷基基团,可选择地被羟基、烷氧基或芳基基团取代,或者R是一个含有N、S、O或P中断的C.sub.2-25烷基链的疏水亲脂芳基基团,例如聚烷氧基链,或者R提供桥连接到第二个三苄基环己烷基团,但需注意R不是苄基;X为CHR.sub.1,或者当R为氢时,两个X基团可以分别表示CO基团;而R.sub.1为氢,一个C.sub.1-6烷基基团,可选择地被羟基、烷氧基或羧基团取代,或者一个含有1至6碳的烷基部分的芳基基团,并且在芳基部分可选择地被烷基、烷氧基、羟基或异硫氰酸酯基团取代)。这些化合物在DO3A、N-取代-1,4,7,10-四氮杂环十二烷-N',N",N"'-三乙酸和磷酸类似物的制备中是有用的。