Synthesis of C-functionalized trans-cyclohexyldiethylenetriaminepenta-acetic acids for labelling of monoclonal antibodies with the bismuth-212 α-particle emitter
摘要:
Several C-functionalized cyclohexyldiethylenetriaminepenta-acetic acid derivatives have been prepared from (+/-)-4-nitrophenylalanine and (+/-)-trans-cyclohexane-1,2-diamine to produce two sets of diastereoisomeric enantiomers. A modification of this synthesis has been employed to prepare a single enantiomer in order to define the absolute configurations of the products.
Stereochemical influence on the stability of radio-metal complexes in vivo. Synthesis and evaluation of the four stereoisomers of 2-(p-nitrobenzyl)-trans-CyDTPA
stability of the two diastereomeric C-Functionalized CyDTPA chelatingagents, (CHX-A DTPA and CHX-B DTPA, both racemates), as recently reported prompted further investigation as to why differences in configuration produced striking effects on the in vivo stability of their yttrium complexes. To this end, the four individual component stereoisomers of CHX-A and CHX-B were synthesized and ability to bind
METHOD OF PREPARING MACROMOLECULAR CONTRAST AGENTS AND USES THEREOF
申请人:Brechbiel Martin W.
公开号:US20100056776A1
公开(公告)日:2010-03-04
Disclosed are methods of preparing a macromolecular conjugated ligand and a metal complex thereof. The metal complex is targeted for use as a contrast agent, for example, in MRI. The method of preparing a macromolecular conjugated ligand comprises: (a) providing a compound of formula (I)
wherein R, A, and Pg are as defined herein, (b) reacting the compound of formula (I) with a macromolecular compound (e.g., dendrimer) in an organic solvent medium which is substantially free of water to obtain a macromolecular conjugated compound, and (c) removing the carboxyl-protecting groups to obtain a carboxyl-deprotected macromolecular conjugated compound. The metal complex can be prepared by reacting the carboxyl-deprotected macromolecular conjugated compound with an ion (e.g., Gd(III)). Also disclosed are two carboxyl-protected 1B4M-DTPA intermediate compounds.
RADIOIMMUNOCONJUGATE FOR USE IN TREATING BONE MARROW ASSOCIATED DISEASES
申请人:TheraPharm GmbH
公开号:US20220401594A1
公开(公告)日:2022-12-22
The present invention relates to the use of radioimmunoconjugates for the treatment of bone marrow associated diseases, particularly AL-amyloidosis.