Design of organoruthenium complexes for nanoparticle functionalization
摘要:
In recent years, extensive research efforts have been focused on loading metal complexes onto macromolecular systems such as nanoparticles. We report a ligand with a catechol group based on a picolinamide which allows for coordination to organoruthenium moieties while the catechol group remains available for loading on nanoparticles as delivery vehicles towards tumors. All the compounds were characterized with standard analytical methods and the molecular structure of the ligand 1, and its Ru complexes 1a and 1b were determined by X-ray diffraction analysis. The crystal structure of 1a and 1b showed pseudo-tetrahedral geometry of the Ru center with "piano-stool" conformation and 1 coordinated as an N, O-bidentate ligand, however, the latter depending on the reaction conditions employed. The Ru complexes 1a-1c were effectively loaded on magnetite nanoparticles as characterized by inductively-coupled plasma mass spectrometry (ICP-MS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). (C) 2019 Elsevier B.V. All rights reserved.
Design of organoruthenium complexes for nanoparticle functionalization
摘要:
In recent years, extensive research efforts have been focused on loading metal complexes onto macromolecular systems such as nanoparticles. We report a ligand with a catechol group based on a picolinamide which allows for coordination to organoruthenium moieties while the catechol group remains available for loading on nanoparticles as delivery vehicles towards tumors. All the compounds were characterized with standard analytical methods and the molecular structure of the ligand 1, and its Ru complexes 1a and 1b were determined by X-ray diffraction analysis. The crystal structure of 1a and 1b showed pseudo-tetrahedral geometry of the Ru center with "piano-stool" conformation and 1 coordinated as an N, O-bidentate ligand, however, the latter depending on the reaction conditions employed. The Ru complexes 1a-1c were effectively loaded on magnetite nanoparticles as characterized by inductively-coupled plasma mass spectrometry (ICP-MS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). (C) 2019 Elsevier B.V. All rights reserved.
a Pd-catalyzed picolinamide-directed site-selective C(sp2)–H sulfonylation of amino acids and peptides with sodium sulfinates in moderate to good yields. Sulfonylation of levodopa and dopamine drug molecules and late-stage directed peptide sulfonylation are studied for the first time. Broad substrate scope having various functionalities, late-stage drug modifications, and various post synthetic utilities
Design of organoruthenium complexes for nanoparticle functionalization
作者:Saawan Kumar、Guillaume Gallician、Dennis Weidener、Matthew P. Sullivan、Tilo Söhnel、Muhammad Hanif、Christian G. Hartinger
DOI:10.1016/j.jorganchem.2019.03.020
日期:2019.8
In recent years, extensive research efforts have been focused on loading metal complexes onto macromolecular systems such as nanoparticles. We report a ligand with a catechol group based on a picolinamide which allows for coordination to organoruthenium moieties while the catechol group remains available for loading on nanoparticles as delivery vehicles towards tumors. All the compounds were characterized with standard analytical methods and the molecular structure of the ligand 1, and its Ru complexes 1a and 1b were determined by X-ray diffraction analysis. The crystal structure of 1a and 1b showed pseudo-tetrahedral geometry of the Ru center with "piano-stool" conformation and 1 coordinated as an N, O-bidentate ligand, however, the latter depending on the reaction conditions employed. The Ru complexes 1a-1c were effectively loaded on magnetite nanoparticles as characterized by inductively-coupled plasma mass spectrometry (ICP-MS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). (C) 2019 Elsevier B.V. All rights reserved.