Preparation and evaluation of <sup>99m</sup>Tc-labeled porphyrin complexes prepared using PNP and HYNIC cores: studying the effects of core selection on pharmacokinetics and tumor uptake in a mouse model
作者:Mohini Guleria、Tapas Das、Kusum Vats、Jeyachitra Amirdhanayagam、Anupam Mathur、Haladhar D. Sarma、Ashutosh Dash
DOI:10.1039/c8md00559a
日期:——
Demonstration of the effect of using two different 99mTc-cores for radiolabeling of the same ligand: differential in vivo outcome.
使用两种不同的99mTc-核素标记相同配体的效果演示:不同的体内结果。
Chemistry of the Strong Electrophilic Metal Fragment [<sup>99</sup>Tc(N)(PXP)]<sup>2+</sup> (PXP = Diphosphine Ligand). A Novel Tool for the Selective Labeling of Small Molecules
Monosubstituted [M(N)Cl(2)(POP)] [M = Tc, 1; Re, 2] and [M(N)Cl(2)(PNP)] [M = Tc, 3; Re, 4] complexes were prepared by reaction of the precursors [M(N)Cl(4)](-) and [M(N)Cl(2)(PPh(3))(2)] (M = Tc, Re) with the diphosphine ligands bis(2-diphenylphosphinoethyl)ether (POP) and bis(2-diphenylphosphinoethyl)methoxyethylamine (PNP) in refluxing dichloromethane/methanol solutions. In these compounds, the
单取代 [M(N)Cl(2)(POP)] [M = Tc, 1; Re, 2] 和 [M(N)Cl(2)(PNP)] [M = Tc, 3; Re, 4] 配合物是通过前体 [M(N)Cl(4)](-) 和 [M(N)Cl(2)(PPh(3))(2)] (M = Tc, Re)与二膦配体双(2-二苯基膦乙基)醚(POP)和双(2-二苯基膦乙基)甲氧基乙胺(PNP)在回流的二氯甲烷/甲醇溶液中反应。在这些化合物中,二膦作为螯合配体通过两个磷原子与金属中心结合。还考虑到位于连接两个 P 原子的碳骨架中间的杂原子(N 或 O)的弱相互作用,我们发现二膦配体的配位排列可以被视为经向 (m) 或面 (f ),以及作为伪八面体的结果几何。如代表性化合物 2m 和 4f 的 X 射线衍射分析所确定的,二膦配体的杂原子总是位于氮键的反式。密度泛函理论计算表明,在 POP 型配合物中,mer 形式受到大约 6
heterocomplexes of generalformula [M(N)(DTC)(PNP)]+ (where M is 99Tc or Re, DTC is the mono-anionic form of a dithiocarbamate ligand, and PNP is a diphosphane ligand with a tertiary amine-containing five-membered spacer) were prepared by ligand-exchange reactions with the labile precursors [M(N)Cl2(PPh3)2] in dichloromethane/alcohol mixtures. The molecular structure of the representative rhenium complex [Re(N)(dedc)(pnp2)][PF6]
Radiosynthesis and evaluation of a 99mTc-folic acid radiotracer prepared using [99mTcN(PNP)]2+ metal fragment
作者:Kusum Vats、Suresh Subramanian、Anupam Mathur、Haladhar Dev Sarma、Sharmila Banerjee
DOI:10.1016/j.bmcl.2016.03.090
日期:2017.3
clearance of labeled folicacid could be effected via the hepatic route, the in vitro studies of the folic acid-cysteine conjugate carried out in KB-31 cells, did not show much promise with reduction in receptor affinity in comparison with the native folicacid. The route followed herein to prepare a folic-acid based radiotracer constitutes the first report of radiolabeling folicacid using the [99mTcN(PNP)]2+
Radioactive transition metal nitride heterocomplex
申请人:——
公开号:US20020048549A1
公开(公告)日:2002-04-25
The present invention provides a single radioactive transition metal nitride heterocomplex which permits labeling of a physiologically active substance such as a peptide, hormone or the like without impairing the activity of the substance. The radioactive transition metal nitride heterocomplex of the present invention is represented by the following formula (I):
(M═N)XY (I)
wherein a radioactive transition metal M is radioactive technetium or radioactive rhenium, N is a nitrogen atom, X is a diphosphine compound or a diarsine compound, and Y is a bindentate ligand having a combination of electron-donating atoms.