70201-42-2Relevant articles and documents
Towards redox-switchable organocatalysts based on bidentate halogen bond donors
Engelage,Hijazi,Gartmann,Chamoreau,Sch?llhorn,Huber,Fave
, p. 4344 - 4352 (2021/03/03)
Redox-active bidentate halogen bond donors based on halopyridinium groups as halogen-bond donating units were synthesized and their structures were elucidated by X-ray diffraction analyses and DFT calculations.Viareversible twofold reduction, these dicationic species can be transformed to neutral compounds which should be much weaker Lewis acids. The corresponding electrochemical data were obtained, and CV as well as UV-vis and NMR techniques were also used to determine binding constants of these halogen bond donors to halides. While all titrations agree on the relative order of binding strengths (with chloride being bound strongest), there are marked deviations in the overall affinity constants which are discussed. In contrast to earlier azo-bridge analogues, the ethylene-linked variants presented herein do not oxidize halides, and thus the novel halogen bond donors could also be used as Lewis acidic organocatalysts in a halide abstraction benchmark reaction, yielding a performance similar to bis(haloimidazolium)-derived catalysts.
HETEROCYCLIC COMPOUNDS, PROCESS FOR PREPARATION OF THE SAME AND USE THEREOF
-
Paragraph 0418; 0419; 0420, (2017/07/15)
The present invention provides a heterocyclic compound represented by the formula (I), its stereoisomers, or a pharmaceutically acceptable salt thereof, pharmaceutical compositions thereof, and their use in preparing a medicament for the prevention and/or treatment of central nervous system disease.
NAPHTHYLUREA DERIVATIVES AND MEDICAL APPLICATIONS THEREOF
-
Paragraph 0038-0040, (2016/08/17)
The present invention relates to naphthylurea derivatives. Such substances can significantly inhibit VEGFR2 and PDGFR-β receptor tyrosine kinase phosphorylation at nanomolar concentration levels. It is a novel type of tyrosine kinase inhibitors which can be used in the treatment of tyrosine kinase-mediated diseases or symptoms such as malignancies and ocular diseases accompanied with pathologic neovascularization
AMIDO-BENZYL SULFONE AND SULFOXIDE DERIVATIVES
-
Page/Page column 135, (2013/09/12)
The present invention relates to certain amido-benzyl sulfoxide and sulfone compounds, pharmaceutical compositions comprising such compounds, and methods of treatment using such compounds.
PYRIDINYL AND PYRIMIDINYL SULFOXIDE AND SULFONE DERIVATIVES
-
Page/Page column 86, (2013/09/12)
Disclosed are certain pyridinyl and pyrimidinyl sulfoxide and sulfone compounds, pharmaceutical compositions comprising such compounds and methods of treatment using such compounds.
AMIDO SPIROCYCLIC AMIDE AND SULFONAMIDE DERIVATIVES
-
Page/Page column 148, (2013/09/12)
Provided are amido spirocyclic amide and sulfonamide compounds, pharmaceutical compositions comprising such compounds, and methods of treatment using such compounds.
AMIDO-BENZYL SULFONE AND SULFONAMIDE DERIVATIVES
-
Page/Page column 64; 65, (2013/09/12)
Disclosed are certain amido-benzyl sulfone and sulfonamide compounds, pharmaceutical compositions comprising such compounds, land methods of treatment using such compounds.
AMIDO-BENZYL SULFOXIDE DERIVATIVES
-
Paragraph 0187, (2013/09/12)
The present invention relates to certain amido-benzyl sulfoxide compounds, pharmaceutical compositions comprising such compounds, and methods of treatment of an NAMPT-mediated disease or condition in a subject, selected from solid or liquid tumor, rheumat
Synthesis and in vitro photodynamic activities of water-soluble fluorinated tetrapyridylporphyrins as tumor photosensitizers
Ko, Yoon-Joo,Yun, Kyung-Jin,Kang, Min-Seok,Park, Jongmin,Lee, Kyung-Tae,Park, Seung Bum,Shin, Jung-Hyu
, p. 2789 - 2794 (2008/02/05)
A series of water-soluble fluorinated cationic porphyrins were designed, synthesized, and characterized. In vitro photocytotoxicity of these compounds was evaluated by MTT assay on HeLa cells. Their photocytotoxicity was dependent on the positions of the cations and the fluorines in the pyridine ring, and 5,10,15,20-tetrakis-(N-methyl-2-fluoro-pyridin-3-yl)-porphyrin (8) showed the most potent photo-induced cytotoxicity without photobleaching. PDT-induced ROS inside HeLa cells was measured with flow cytometry using ROS-sensitive fluorometric probe, 2,7-dichlorofluororescin (DCF), which revealed high correlations of ROS with cellular cytotoxicity. FACS analysis shows that PDT with porphyrin 8 induced apoptosis in HeLa cells. In summary, efficient generation of ROS, biological effectiveness, and good photostability of porphyrin 8 indicate its potential application in photodynamic therapy (PDT) in the near future.
Synthesis of difluorinated pyridinecarboxaldehyde via electrophilic fluorination
Ko, Yoon-Joo,Park, Kyung-Bae,Shim, Seung-Bo,Shin, Jung-Hyu
, p. 755 - 759 (2008/03/28)
An efficient synthesis of novel 3,5-difluoropyridine-4-carboxaldehyde using N-fluoro-benzenesulfonimide (NSFi) is described. Difluorination was achieved through the reaction of 3,5-dihalo-1,3-dioxolane pyridine with n-butyllithium followed by N-fluorobenzenesulfonimide at -120 °C in good to high yields. Maintaining the low temperature during the transmetallation was found to be critical for the selective formation of the difluoro-susbstitution over the monofluoro one.