The present invention relates to new class of functionalized polyazamacrocycles including at least one phosphonic or phosphinic group linked to a nitrogen atom of the macrocyclic cage, and capable of chelating paramagnetic metal ions, their chelated complexes with metal ions and the use thereof as contrast agents, particularly suitable for Magnetic Resonance Imaging (MRI) analysis.
A new synthesis of cystamine modified Eu3+ DOTAM-Gly-Phe-OH: a conjugation ready temperature sensitive MRI contrast agent
作者:Mojmír Suchý、Alex X. Li、Robert Bartha、Robert H. E. Hudson
DOI:10.1039/b808282k
日期:——
Several approaches towards asymmetrically derivatized peptide-decorated cyclens that yield lanthanide metal chelators, in which three of the nitrogen atoms of cyclen share a common substituent and the fourth nitrogen atom is differentially substituted, have been evaluated. The most effective route consisted of selective monoalkylation followed by peralkylation with a second different electrophile. The unique substituent also possessed a masked sulfanyl group that was suitable for subsequent chemoselective conjugation chemistry.
New compounds are provided that may be used to chelute a metal. The compound comprise polyazamacrocyclic compound with at least one phosphonic group substituted on at least one of the aza groups of the polyazamacrocyclic compound. Methods for preparing the compounds are also provided. Methods for preparing a diagnostic imaging agent using the compounds and methods for diagnostic imaging are further provided. Methods for preparing a therapeutic agent using the compounds and methods for therapy are further provided.
Aminocarboxylate ligands having substituted aromatic amide moieties
申请人:——
公开号:US20030171561A1
公开(公告)日:2003-09-11
Novel metal-chelate complexes comprising aminocarboxylate ligands including substituted aromatic amide moieties, such as those having the formula
1
wherein R
13
, A
1
, R
1
and R
2
are as defined herein, are disclosed.