Metal Complexes Based on Tetrathiol Ligands and Their Use in Nuclear Medical Diagnostics and Endoradionuclide Therapy and Method For Producing Said Metal Complexes
申请人:Heinrich Tobias
公开号:US20080279770A1
公开(公告)日:2008-11-13
The aim of the invention is to provide radiolytically and metabolically stable metal complexes suitable for conjugation with biomolecules and, therefore, useful for nuclear medical diagnostics and in endoradionuclide therapy and to provide a method for their production. This is achieved by metal complexes based on tetrathiol ligands of formula (I), in which (CH—R
1
) represents substituted or unsubstituted methylene bridges, R
1
and H represent substituted or unsubstituted alkyl groups or substituted or unsubstituted aryl groups, m and n represent the number of methylene groups, the sum of m and n lying between 4 and 10, R
2
represents H, OR
1
or NHR
1
, Y represents 4 times H,
99m
TcO,
186
ReO,
188
ReO,
99m
TcN,
186
ReN or
188
ReN, X represents (CH)
2
, the unsubstituted amino group (N—H) or the substituted amino group (N-Z), the guanidyl unit of formula (II) or the urea group of formula (III), in which Z represents —(CH—R
1
)-A, p stands for the number of methylene groups and lies between 2 and 8, A represents a unit capable of conjugation, such as COOH, COR
3
, —NCS and R
3
represents OH, OR
1
or NHR
1
.