15469-97-3Relevant articles and documents
HETEROCYCLIC COMPOUND
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Paragraph 0480-0481, (2021/10/30)
Provided is a compound that can have an effect of inhibiting MALT1 and is expected as useful as a prophylactic or therapeutic drug for cancer, etc. A compound represented by formula (I) [wherein each symbol is as defined in the description], a salt thereo
Molecular tunability of surface-functionalized metal nanocrystals for selective electrochemical CO2 reduction
Pankhurst, James R.,Guntern, Yannick T.,Mensi, Mounir,Buonsanti, Raffaella
, p. 10356 - 10365 (2019/11/20)
Organic ligands are used in homogeneous catalysis to tune the metal center reactivity; in contrast, clean surfaces are usually preferred in heterogeneous catalysis. Herein, we demonstrate the potential of a molecular chemistry approach to develop efficient and selective heterogeneous catalysts in the electrochemical CO2 reduction reaction (CO2RR). We have tailor-made imidazolium ligands to promote the CO2RR at the surface of hybrid organic/inorganic electrode materials. We used silver nanocrystals for the inorganic component to obtain fundamental insights into the delicate tuning of the surface chemistry offered by these ligands. We reveal that modifying the electronic properties of the metal surface with anchor groups along with the solid/liquid interface with tail groups is crucial in obtaining selectivities (above 90% FE for CO), which are higher than the non-functionalized Ag nanocrystals. We also show that there is a unique dependency of the CO2RR selectivity on the length of the hydrocarbon tail of these ligands, offering a new way to tune the interactions between the metal surface with the electrolyte and reactants.
A process for preparing 7-bromo imidazo [2,1-f] [1, 2, 4] triazin-4-amine method
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Paragraph 0065-0068, (2016/11/24)
The invention discloses a method for preparing 7-bromoimidazo[2,1-f][1,2,4]triazin-4-amine. According to the invention, a compound IX is adopted as a a raw material, and is subjected to a reaction with a compound X under the effect of alkali, such that a
First selective CYP11B1 inhibitors for the treatment of cortisol-dependent diseases
Hille, Ulrike E.,Zimmer, Christina,Vock, Carsten A.,Hartmann, Rolf W.
supporting information; experimental part, p. 2 - 6 (2011/04/17)
Outgoing from an etomidate-based design concept, we succeeded in the development of a series of highly active and selective inhibitors of CYP11B1, the key enzyme of cortisol biosynthesis, as potential drugs for the treatment of Cushing's syndrome and rela
Asymmetric Copper(II)-catalysed nitroaldol (Henry) reactions utilizing a chiral C1-symmetric dinitrogen ligand
Zhou, Yirong,Gong, Yuefa
experimental part, p. 6092 - 6099 (2011/11/29)
A series of stable chiral C1-symmetric dinitrogen ligands were conveniently synthesized in high yields by condensation of chiral amines [(-)-exo-bornylamine or (+)-(1S,2S,5R)-menthylamine] with various substituted imidazolecarbaldehydes. With the assistance of base, the ligand L1 in combination with CuCl2·2H2O (2.5 mol-% or 5.0 mol-%) can efficiently promote nitroaldol (Henry) reactions between a variety of aldehydes and nitromethane. Both aromatic and aliphatic aldehydes were tolerated in our catalytic system, affording the expected nitroalcohol products in high yields (up to 97%) and with good enantioselectivities (up to 96%) under mild reaction conditions. A series of chiral C1-symmetric dinitrogen ligands were conveniently synthesized in high yields by condensations of chiralamines with various substituted imidazolecarbaldehydes. The ligand L1 in conjunction with CuCl2·2H2O can efficiently promote nitroaldol (Henry) reactions between various aldehydes and nitromethane in high yields (up to 97%) and with good enantioselectivities (up to 96%).
Synthesis and significant cytostatic activity of 7-hetaryl-7- deazaadenosines
Bourderioux, Aurelie,Nau?, Petr,Perlíková, Pavla,Pohl, Radek,Pichová, Iva,Votruba, Ivan,D?ubák, Petr,Kone?ny, Petr,Hajdúch, Marián,Stray, Kirsten M.,Wang, Ting,Ray, Adrian S.,Feng, Joy Y.,Birkus, Gabriel,Cihlar, Tomas,Hocek, Michal
supporting information; experimental part, p. 5498 - 5507 (2011/10/08)
A series of 7-aryl- and 7-hetaryl-7-deazaadenosines were prepared by the cross-coupling reactions of unprotected or protected 7-iodo-7-deazaadenosines with (het)arylboronic acids, stannanes, or zinc halides. Nucleosides bearing 5-membered heterocycles at
FRICTIONLESS MOLECULAR ROTARY MOTORS
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Page/Page column 28, (2010/02/17)
A rotaxane consisting of a cucurbituril and an uncharged guest molecule, having low or null affinity therebetween is provided as well as processes for providing the same. Various uses as energy converters (“frictionless” molecular motors), biochips and biosensors using the same are also provided.
The role of fluorine substitution in biphenyl methylene imidazole-type CYP17 inhibitors for the treatment of prostate carcinoma
Hu, Qingzhong,Negri, Matthias,Olgen, Sureyya,Hartmann, Rolf W.
scheme or table, p. 899 - 910 (2011/02/23)
It has been established that the growth of most prostate carcinomas depends on androgen stimulation. The inhibition of cytochrome P450-17 (CYP17) to block androgen biosynthesis is therefore regarded as a promising approach to therapy. Based on our previou
Preparation of phosphorothioate oligomers
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, (2008/06/13)
The present invention is directed to methods for solid phase nucleotide synthesis utilizing substituted imidazole catalysts.
Tetrazoles: XLIV. Synthesis and chemical properties of 5-substituted 2-triphenylmethyltetrazoles
Myznikov,Artamonova,Bel'skii,Stash,Skvortsov,Koldobskii
, p. 1360 - 1369 (2007/10/03)
Tritylation of tetrazole and its 5-substituted derivatives with triphenylmethyl chloride under conditions of phase-transfer catalysis regioselectively yields the corresponding 5-substituted 2-trityltetrazoles which can be used to protect N-H bonds in nitrogen-containing heterocycles and O-H bonds in primary alcohols. Thermolysis of 2-trityltetrazoles in benzonitrile leads to 3,6-disubstituted 1,2,4,5-tetrazines. Thermal transformation of the same compounds in dodecane follows a radically different mechanism, resulting in formation of difficultly accessible 8,8-diphenylheptafulvenes. The structure of the latter was proved by X-ray analysis.