38135-56-7Relevant academic research and scientific papers
Ultra-small cobalt nanoparticles from molecularly-defined Co-salen complexes for catalytic synthesis of amines
Beller, Matthias,Chandrashekhar, Vishwas G.,Gawande, Manoj B.,Jagadeesh, Rajenahally V.,Kalevaru, Narayana V.,Kamer, Paul C. J.,Senthamarai, Thirusangumurugan,Zbo?il, Radek
, p. 2973 - 2981 (2020/03/27)
We report the synthesis of in situ generated cobalt nanoparticles from molecularly defined complexes as efficient and selective catalysts for reductive amination reactions. In the presence of ammonia and hydrogen, cobalt-salen complexes such as cobalt(ii)-N,N′-bis(salicylidene)-1,2-phenylenediamine produce ultra-small (2-4 nm) cobalt-nanoparticles embedded in a carbon-nitrogen framework. The resulting materials constitute stable, reusable and magnetically separable catalysts, which enable the synthesis of linear and branched benzylic, heterocyclic and aliphatic primary amines from carbonyl compounds and ammonia. The isolated nanoparticles also represent excellent catalysts for the synthesis of primary, secondary as well as tertiary amines including biologically relevant N-methyl amines.
PYRIDOPYRAZINE AND PYRIDOTRIAZINE INHIBITORS OF INFLUENZA VIRUS REPLICATION
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Paragraph 00371, (2020/05/06)
Provided herein are compounds that can inhibit the replication of influenza viruses, reduce the amount of influenza viruses, and/or treat influenza. (I)
MOF-derived cobalt nanoparticles catalyze a general synthesis of amines
Jagadeesh, Rajenahally V.,Murugesan, Kathiravan,Alshammari, Ahmad S.,Neumann, Helfried,Pohl, Marga-Martina,Radnik, J?rg,Beller, Matthias
, p. 326 - 332 (2017/09/28)
The development of base metal catalysts for the synthesis of pharmaceutically relevant compounds remains an important goal of chemical research. Here, we report that cobalt nanoparticles encapsulated by a graphitic shell are broadly effective reductive amination catalysts. Their convenient and practical preparation entailed template assembly of cobaltdiamine- dicarboxylic acid metal organic frameworks on carbon and subsequent pyrolysis under inert atmosphere.The resulting stable and reusable catalysts were active for synthesis of primary, secondary, tertiary, and N-methylamines (more than 140 examples).The reaction couples easily accessible carbonyl compounds (aldehydes and ketones) with ammonia, amines, or nitro compounds, and molecular hydrogen under industrially viable and scalable conditions, offering cost-effective access to numerous amines, amino acid derivatives, and more complex drug targets.
Substituted indolizine-like compounds and methods of use
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, (2008/06/13)
Selected novel substituted indolizine-like compounds are effective for treatment of diseases, such as TNF-α, IL-1β, IL-6 and/or IL-8 mediated diseases, and other maladies, such as cancer, pain and diabetes. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for treatment of diseases and other maladies or conditions involving inflammation, cancer, pain, diabetes and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.
Substituted pyridine and pyridazine compounds and methods of use
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, (2008/06/13)
Selected novel substituted pyridine and pyridazine compounds are effective for prophylaxis and treatment of diseases, such as TNF-α, IL-1β, IL-6 and/or IL-8 mediated diseases, and other maladies, such as cancer, pain and diabetes. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for prophylaxis and treatment of diseases and other maladies or conditions involving inflammation, cancer, pain, diabetes and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.
Synthesis and histamine H2 agonistic activity of arpromidine analogues: replacement of the pheniramine-like moiety by non-heterocyclic groups
Buschauer, A,Friese-Kimmel A,Baumann, G,Schunack, W
, p. 321 - 330 (2007/10/02)
Analogues of the potent histamine H2 agonist arpromidine, characterized by non-hetrocyclic groups (phenyl, cyclohexyl, alkyl) instead of the pheniramine-like portion, were prepared and tested for their H2 agonistic and H1 antagonistic activity in the isolated guiea pig right atrium and ileum, respectively.In the diphenylpropylguanidine series an increase in H2 agonistic potency resulted from mono- or difluorination at one or both phenyl rings in the meta and/or para position (pD2 7.75 vs pD2 = 7.15 for the unsubstituted parent compound).Compounds chlorinated atboth phenyl rings were considerably less potent.Highest combined H2 agonistic/H1 antagonistic potency was found in the 4-fluorophenyl series.The arpromidine analogue with cyclohexyl and methyl group instead of phenyl and pyridine ring proved to be 30 times more potent than histamine in the atrium.The H1 antagonistic potency in cyclohexyl compounds was lower than in the diaryl series.Thus, aromatic rings appear not to be required for high H2 agonistic potency but are useful for combined H2 agonistic/H1 antagonistic activity. histamine / H2 receptor / H2 agonist / arpromidine / impromidine / H1 antagonist / antihistamine
