876918-26-2Relevant articles and documents
Synthesis and bioevaluation of 1-phenylimidazole-4-carboxylic acid derivatives as novel xanthine oxidoreductase inhibitors
Li, Jing,Li, Xiaolei,Li, Yuanyuan,Zhang, Lei,Zhou, Haiyan,Zhu, Xinying
, (2019/12/30)
As part of a continuing study, we designed and synthesized four series of 1-phenylimidazole-4-carboxylic acid derivatives as xanthine oxidoreductase (XOR) inhibitors, evaluated their in vitro inhibitory potencies against XOR and hypouricemic effects in mi
A method for preparing [...]
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Paragraph 0034; 0042; 0046-0047; 0052; 0056-0057; 0062; 0066, (2019/02/13)
The invention discloses a method for preparing [...], relates to a pharmaceutical technical field of chemical synthesis, comprising the following steps: to adjacent bromobenzylcyanide as raw materials with the isobutyl alcohol in the etherification reaction under alkaline conditions, to obtain 2 - [...]; to hydrogen peroxide/hydrogen bromic acid system for the oxidation of bromide, 2 - [...] oxidation bromination reaction, to obtain 2 - isobuoxy - 5 - bromobenzylcyanide; the 2 - isobuoxy - 5 - bromobenzylcyanide with 2 - boric acid - 4 - methyl - 1, 3 - thiazole - 5 - carboxylic acid ethyl ester in Suziki coupling reaction, to obtain 2 - [3 - cyano - 4 - isobuoxy phenyl] - 4 - methyl thiazole - 5 - carboxylic acid ethyl ester; the 2 - [3 - cyano - 4 - isobuoxy phenyl] - 4 - methyl thiazole - 5 - carboxylic acid ethyl ester under basic condition to obtain [...]. The invention routes and novel and short synthetic route, requires only four-step reaction can be to obtain the target product, used in the preparation raw materials are cheap and easy to obtain, environmental protection, mild reaction conditions, the operation is convenient and controllable, the prepared [...] high purity, high yield.
Phenylimidazole XOR (Xanthine Oxidoreductase) inhibitor and preparation and application thereof
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Paragraph 0070-0072, (2019/09/17)
The invention belongs to the technical field of pharmaceutical and chemical industries and discloses a phenylimidazole XOR (Xanthine Oxidoreductase) inhibitor and the preparation and the application of the phenylimidazole XOR inhibitor. The structure of t
Process Development of Febuxostat Using Palladium- and Copper-Catalyzed C-H Arylation
Dohi, Masahiko,Kato, Yoshiaki,Komiyama, Masato,Kurokawa, Masayuki,Minamizono, Kunio,Sato, Yoshinori,Teramoto, Mitsuru,Tsuchiya, Hideyoshi,Tsuchiya, Naoki,Yajima, Naoki
, p. 1306 - 1311 (2018/09/21)
There is significant interest in the development of process routes for active pharmaceutical ingredients using C-H arylation methodology. An efficient and practical synthetic route for febuxostat (1), which is the first non-purine-type xanthine oxidase inhibitor, was established via palladium- and copper-catalyzed C-H arylation of thiazole with aryl bromide. The catalyst loading was reduced to 0.1 mol percent for the intermolecular C-H arylation, and a three-step synthesis produced febuxostat in 89percent overall yield with excellent selectivity.
Synthesis and bioevaluation of 1-phenyl-pyrazole-4-carboxylic acid derivatives as potent xanthine oxidoreductase inhibitors
Li, Jing,Wu, Fangping,Liu, Xingguo,Zou, Yake,Chen, Huixiong,Li, Zheng,Zhang, Lei
, p. 20 - 30 (2017/09/19)
A diverse library of 1-phenyl-pyrazole-4-carboxylic acid derivatives were synthesized and evaluated for their inhibitory potency against xanthine oxidoreductase (XOR) in vitro and vivo, and the structure-activity relationship (SAR) analyses were also pres
Facile one-pot transformation of arenes into aromatic nitriles under metal-cyanide-free conditions
Tamura, Toshiyuki,Moriyama, Katsuhiko,Togo, Hideo
, p. 2023 - 2029 (2015/03/18)
Electron-rich arenes bearing methyl or methoxy groups on the aromatic ring were treated with dichloromethyl methyl ether and ZnBr2, and then with molecular iodine and aq. ammonia to give the corresponding aromatic nitriles in good yields. Using this method, febuxostat was efficiently prepared from 4-bromophenol in four steps. The method can be used for the preparation of aromatic nitriles from arenes in one pot under metal-cyanide-free conditions. Various electron-rich arenes could be effectively converted into the corresponding aromatic nitriles in good yields, by treatment with ZnBr2 and dichloromethyl methyl ether, followed by reaction with molecular iodine and aq. ammonia.
Facile one-pot transformation of phenols into o-cyanophenols
Nakai, Yuhta,Moriyama, Katsuhiko,Togo, Hideo
, p. 6077 - 6083 (2015/03/30)
The treatment of phenols with paraformaldehyde in the presence of MgCl2 and Et3N in THF at 80 C, followed by reaction with molecular iodine and aq. ammonia at room temperature provided the corresponding o-cyanophenols in moderate to good yields. The present reaction is a one-pot transformation of phenols into o-cyanophenols using much less expensive reagents than are typically used; the reaction is free of both transition-metals and cyanide. The utility of this reaction was highlighted during our preparation of Febuxostat from p-bromophenol.
HTS followed by NMR based counterscreening. Discovery and optimization of pyrimidones as reversible and competitive inhibitors of xanthine oxidase
Even?s, Johan,Edfeldt, Fredrik,Lepist?, Matti,Svitacheva, Naila,Synnergren, Anna,Lundquist, Britta,Gr?nse, Mia,R?nnholm, Anna,Varga, Mikael,Wright, John,Wei, Min,Yue, Sherrie,Wang, Junfeng,Li, Chong,Li, Xuan,Chen, Gang,Liao, Yong,Lv, Gang,Tj?rnebo, Ann,Narjes, Frank
supporting information, p. 1315 - 1321 (2014/03/21)
The identification of novel, non-purine based inhibitors of xanthine oxidase is described. After a high-throughput screening campaign, an NMR based counterscreen was used to distinguish actives, which interact with XO in a reversible manner, from assay artefacts. This approach identified pyrimidone 1 as a reversible and competitive inhibitor with good lead-like properties. A hit to lead campaign gave compound 41, a nanomolar inhibitor of hXO with efficacy in the hyperuricemic rat model after oral dosing.
Direct oxidative conversion of methylarenes into aromatic nitriles
Tsuchiya, Daisuke,Kawagoe, Yuhsuke,Moriyama, Katsuhiko,Togo, Hideo
, p. 4194 - 4197 (2013/09/12)
A variety of methylarenes were successfully converted into the corresponding aromatic nitriles in good to moderate yields by the treatment with NBS or DBDMH in the presence of a catalytic amount of AIBN or BPO, followed by the reaction with molecular iodine in aq NH3 in a one-pot procedure. The present reaction is a useful and practical transition-metal-free method for the preparation of aromatic nitriles from methylarenes.
METHOD FOR PRODUCING PHENYL-SUBSTITUTED HETEROCYCLIC DERIVATIVE BY MEANS OF COUPLING METHOD USING PALLADIUM COMPOUND
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Paragraph 0304; 0305; 0306, (2013/06/28)
The present invention provides a method for producing a xanthine oxidase inhibitor, which is a therapeutic agent for hyperuricemia, or intermediates of the same, said method being efficient and using a short process. The present invention is a novel coupling method for obtaining a compound represented by formula (3) by bringing about a coupling reaction between a compound represented by formula (1) and a compound represented by formula (2), in the presence of a palladium compound, a ligand capable of coordinating to the palladium compound, a base, a C1-C40 carboxylic acid, and at least one kind of additive.