Understanding the Interaction of Uranyl Cation with Two <i>C</i>-Pivot Tripodal Amides: Synthesis, Complexation, Microcalorimetry, and DFT Studies
作者:Seraj A. Ansari、Prasanta K. Mohapatra、Musharaf Ali Sk、Richard J. M. Egberink、Jurriaan Huskens、Willem Verboom
DOI:10.1021/acs.inorgchem.4c00083
日期:2024.4.8
Complexation of uranyl ions with two structurally related C-pivotal tripodal amides with varying spacer lengths, synthesized for the first time, was studied by optical spectroscopy. In the tripodal amides, the coordination was through the carbonyl O atoms where the carbonyl groups were away from the central C-atom by three spacer atoms (LI) and four spacer atoms (LII), respectively. Increasing the
通过光谱研究了首次合成的铀酰离子与两种结构相关的具有不同间隔基长度的C-枢轴三足酰胺的络合。在三足酰胺中,配位是通过羰基O原子进行的,其中羰基分别通过三个间隔原子 ( L I ) 和四个间隔原子 ( L II ) 远离中心C原子。从L I到L II增加间隔原子有利于与线性铀酰阳离子络合,并导致更强的络合物形成。通过微量热滴定直接测量铀酰阳离子和两个酰胺配体之间的络合热。与两种配体的络合是由放热焓和正熵变化驱动的。通过置换铀酰阳离子的主配位层中的水分子来形成络合物。两种配体形成双溶剂化(ML 2型)复合物,其中配体的一个单元以单齿方式结合,另一个单元以双齿方式结合。密度泛函理论计算进一步支持了我们的实验观察。
New Polypodal Polycarboxylic Ligands − Complexation of Rare-Earth Ions in Aqueous Solution
OLIGONUCLEOTIDE-LIGAND CONJUGATES AND PROCESS FOR THEIR PREPARATION
申请人:ALNYLAM PHARMACEUTICALS, INC.
公开号:US20160376585A1
公开(公告)日:2016-12-29
The present invention relates to ligand conjugates of oligonucleotides (e.g., iRNA agents) and methods for their preparation. The ligands are derived primarily from monosaccharides These conjugates are useful for the in vivo delivery of oligonucleotides.
RAPAMYCIN ANALOGS AND USES THEREOF
申请人:Navitor Pharmaceuticals, Inc.
公开号:US20210220339A1
公开(公告)日:2021-07-22
The present invention provides compounds, compositions thereof, and methods of using the same.