rhenium-based radiopharmaceuticals was conveniently synthesized in high yields through direct reductive N-alkylations of aminoacids and their analogues with aldehydes, using NaBH(OAc)3 as an efficient reagent. The mono-, di-, tetra- and even mixed alkylated aminoacid derivatives were all prepared in one-pot synthesis.
[EN] TECHNETIUM- AND RHENIUM-BIS(HETEROARYL) COMPLEXES, AND METHODS OF USE THEREOF<br/>[FR] COMPLEXES DE TECHNETIUM- ET RHENIUM-BIS(HETEROARYLE), ET LEURS PROCEDES D'UTILISATION
申请人:MOLECULAR INSIGHT PHARM INC
公开号:WO2005079865A1
公开(公告)日:2005-09-01
One aspect of the invention relates to complexes of a radionuclide with various heteroaryl ligands, e.g., imidazolyl and pyridyl ligands, and their use in radiopharmaceuticals for a variety of clinical diagnostic and therapeutic applications. Another aspect of the invention relates to imidazolyl and pyridyl ligands that form a portion of the aforementioned complexes. Methods for the preparation of the radionuclide complexes are also described. Another aspect of the invention relates to imidazolyl and pyridyl ligands based on derivatized lysine, alanine and bis-amino acids for conjugation to small peptides by solid phase synthetic methods. Additionally, the invention relates to methods for imaging regions of a mammal using the complexes of the invention.
Solid-phase synthesis of peptide Mn(<scp>i</scp>)–carbonyl bioconjugates and their CO release upon visible light activation
作者:Yi Zhou、Yonglu Chen、Chunmao He
DOI:10.1039/d1dt00395j
日期:——
A one-pot synthetic route has been developed for the assembly of peptide Mn(I)–carbonyl bioconjugates. It allows the installation of a variety of chelating agents at the late stage, and after just one purification step the TAT–MnCO complexes can be obtained. The resulting bioconjugates showed different and tunable CO releasing kinetics upon visible light activation.
已经开发了一种用于组装肽 Mn( I )-羰基生物共轭物的一锅法合成路线。它允许在后期安装各种螯合剂,只需一个纯化步骤即可获得 TAT-MnCO 复合物。所得生物共轭物在可见光激活后显示出不同且可调节的 CO 释放动力学。
Fluorous ligand capture (FLC): a chemoselective solution-phase strategy for isolating 99mTc-labelled compounds in high effective specific activity
作者:Justin W. Hicks、Laura E. Harrington、John F. Valliant
DOI:10.1039/c1cc11079a
日期:——
A new approach for preparing 99mTc-labelled compounds in high effective specific activity was developed by utilizing a novel fluorous ligand capture (FLC) agent and a chemoselective filtration strategy. This paradigm eliminates the need to use HPLC to obtain technetium(I) based molecular imaging probes free from residual precursor.
Cell-Permeable [<sup>99m</sup>Tc(CO<sub>3</sub>)]-Labeled Fluorogenic Caspase 3 Substrate for Dual-Modality Detection of Apoptosis
作者:Chiyi Xiong、Wei Lu、Rui Zhang、Mei Tian、William Tong、Juri Gelovani、Chun Li
DOI:10.1002/chem.200900766
日期:2009.9.14
To image apoptosis in vivo, a small, membrane‐permeable probe comprising a caspase 3 substrate, a fluorogenic dye, and a radionuclide was synthesized (see scheme). This dual‐modality probe was specifically cleaved by caspase 3 upon exposure to apoptotic cells, allowing the imaging of caspase 3 activities (see figure) and apoptosis by using both optical and nuclear imaging techniques.