申请人:Mallinckrodt Medical, Inc.
公开号:US05330737A1
公开(公告)日:1994-07-19
The present invention relates particularly to novel aminothiol ligands that are suitable for complexing with a radionuclide, such as Tc, Re, or Ga, and are useful as general imaging agents for diagnostic purposes. The ligands have the general formulae (I) and (II): ##STR1## wherein for formula I, R.sup.1 -R.sup.4, R.sup.6, R.sup.7 and R.sup.9 -R.sup.14 can each be one of H, alkyl, aryl, hydroxyalkyl, alkoxycarbonyl, etc.; R.sup.5 and R.sup.8 are suitable sulfur protecting groups; m and n are 1-3; B can be one of C(O)CHR.sup.6 CHR.sup.7 SR.sup.8, CHR.sup.9 CHR.sup.10 C(O)NHR.sup.11, or C(O)CHR.sup.12 CHR.sup.13 NHR.sup.14 ; and wherein for formula II, R.sup.15 -R.sup.18, R.sup.20 and R.sup.21 are defined in the same manner as R.sup.1 above; D and E are either C(O) or CHR.sup.17 ; F is either (CH.sub.2).sub.d NR.sup.18 (CH.sub.2).sub.e SR.sup.19 or CHNR.sup.20 R.sup.21 (CH.sub.2).sub.f SR.sup.22 ; R.sup.19 and R.sup.22 are defined in the same manner as R.sup.5 above; d, e and f are 1-3.
本发明特别涉及一种新型氨硫醇配体,适用于与放射性核素如Tc、Re或Ga络合,并用作诊断目的的通用成像剂。该配体具有一般式(I)和(II):##STR1## 其中对于式I,R.sup.1-R.sup.4、R.sup.6、R.sup.7和R.sup.9-R.sup.14可以是H、烷基、芳基、羟基烷基、烷氧羰基等;R.sup.5和R.sup.8是适当的硫保护基;m和n为1-3;B可以是C(O)CHR.sup.6 CHR.sup.7 SR.sup.8、CHR.sup.9 CHR.sup.10 C(O)NHR.sup.11或C(O)CHR.sup.12 CHR.sup.13 NHR.sup.14;对于式II,R.sup.15-R.sup.18、R.sup.20和R.sup.21的定义与R.sup.1相同;D和E可以是C(O)或CHR.sup.17;F可以是(CH.sub.2).sub.d NR.sup.18 (CH.sub.2).sub.e SR.sup.19或CHNR.sup.20 R.sup.21 (CH.sub.2).sub.f SR.sup.22;R.sup.19和R.sup.22的定义与R.sup.5相同;d、e和f为1-3。