31044-86-7

Upstream product

• 31044-85-6 ethylidynetris(methyl) tris(benzenesulfonate) 
• 2387-43-1 2-methyl-2-((tosyloxy)methyl)propane-1,3-diyl bis(4-methylbenzenesulfonate) 
• 77-85-0 2-(hydroxymethyl)-2-methylpropane-1,3-diol 

Downstream Products

• 866775-52-2 α,α,α-tris[((triphenylphosphoranylidene)amino)methyl]ethane 
• 15995-42-3 1,1,1-Tris(aminomethyl)ethane 

Relevant academic research and scientific papers

Design, synthesis and photophysical properties of 8-hydroxyquinoline-functionalized tripodal molecular switch as a highly selective sequential pH sensor in aqueous solution

The development and photophysical properties of a biomimetic analogue of microbial siderophore from quinolobactin have been described. The putative analogue, 5,5′-(2(((8-hydroxyquinolin-5-yl)methylamino)methyl)2-methylpropane-1,3-diyl)-bis(azanediyl)-bis(methylene)diquinolin-8-ol (TAME5OX), was synthesized with three bidentate 8-hydroxyquinoline (8HQ) groups, connected to a 1,1,1-tris(aminomethyl)ethane framework, and was selected for its potential applications in chemical and biological fields. A combination of absorption and emission spectrophotometry, potentiometry, electrospray mass spectrometry, NMR, IR and theoretical investigation was used to fully characterize TAME5OX. The intense fluorescence from TAME5OX is quenched intermittently under acidic and basic conditions due to the photoinduced intramolecular electron transfer from excited N-pyridyl to hydroxyl moiety of 8HQ units. This renders the ligand an OFF-ON-OFF type of pH-dependent fluorescent sensor. DFT was employed for optimization and evaluation of vibrational modes, excitation and emission properties of the protonated, neutral, deprotonated states of the analogue. Anomalous enhancement observed in the fluorescence spectra of the neutral form of the sensor can be attributed to subtle structural differences from its cationic and anionic forms. Plausible explanations for low fluorescence of the acidic as well as basic form are provided. This journal is

Triamidetriamine bearing macrobicyclic and macrotricyclic ligands: Potential applications in the development of copper-64 radiopharmaceuticals

A versatile and straightforward synthetic approach is described for the preparation of triamide bearing analogues of sarcophagine hexaazamacrobicyclic cage ligands without the need for a templating metal ion. Reaction of 1,1,1-tris(aminoethyl)ethane (tame) with 3 equiv of 2-chloroacetyl chloride, yields the tris(α-chloroamide) synthetic intermediate 6, which when treated with either 1,1,1-tris(aminoethyl)ethane or 1,4,7-triazacyclononane furnished two novel triamidetriamine cryptand ligands (7 and 8 respectively). The Co(III) and Cu(II) complexes of cryptand 7 were prepared; however, cryptand 8 could not be metalated. The cryptands and the Co(III) complex 9 have been characterized by elemental analysis, 1H and 13C NMR spectroscopy, and X-ray crystallography. These studies confirm that the Co(III) complex 9 adopts an octahedral geometry with three facial deprotonated amido-donors and three facial amine donor groups. The Cu(II) complex 10 was characterized by elemental analysis, single crystal X-ray crystallography, cyclic voltammetry, and UV-visible absorption spectroscopy. In contrast to the Co(III) complex (9), the Cu(II) center adopts a square planar coordination geometry, with two amine and two deprotonated amido donor groups. Compound 10 exhibited a quasi-reversible, one-electron oxidation, which is assigned to the Cu2+/3+ redox couple. These cryptands represent interesting ligands for radiopharmaceutical applications, and 7 has been labeled with 64Cu to give 64Cu-10. This complex showed good stability when subjected to L-cysteine challenge whereas low levels of decomplexation were evident in the presence of L-histidine.

A new tripodal ligand system based on the iminophosphorane functional group. Part 1: Synthesis and characterization

Two tripodal alcohols, viz., 1,1,1-tris(hydroxymethyl)ethane and α,α,α-tris(hydroxymethyl)toluene were converted by an efficient multi-step pathway involving azide formation into the corresponding tris(iminophosphorane) scaffolds bearing cyclopentyl (Cp)

Peptide-based compounds

The invention relates to new peptide-based compounds for use as diagnostic imaging agents or as therapeutic agents wherein the agents comprise a targeting vector which binds to receptors associated with integrin receptors.