50877-42-4Relevant articles and documents
BTK Inhibitors and uses thereof
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Paragraph 1635-1640, (2020/05/02)
The invention discloses a bruton's tyrosine kinase (BTK) inhibitor and use thereof. Specifically, the invention provides heteroaromatic compounds or stereoisomers, geometrical isomers, tautomers, racemates, nitrogen oxides, hydrates, solvates, metabolites and pharmaceutically acceptable salts or prodrugs thereof, and pharmaceutical compositions containing the heteroaromatic compounds; the invention also discloses use of the heteroaromatic compounds or the pharmaceutical compositions containing the heteroaromatic compounds in preparation of medicines; the medicines can be used for treating autoimmune diseases, inflammatory diseases or proliferative diseases.
Copper-catalyzed and additive free decarboxylative trifluoromethylation of aromatic and heteroaromatic iodides
Johansen, Martin B.,Lindhardt, Anders T.
supporting information, p. 1417 - 1425 (2020/03/03)
A copper-catalyzed decarboxylative trifluoromethylation of (hetero)aromatic iodides has been developed. Importantly, this new copper-catalyzed reaction operates in the absence of any ligands and metal additives. The protocol shows good functional group tolerance and is compatible with heteroaromatic systems. The reaction proved scalable to a 15 mmol scale with increased yield. Finally, late-stage installation of the trifluoromethyl functionality afforded the N-trifluoroacetamide variant of the antidepressant agent, Prozac, demonstrating the applicability of the developed method.
Mechanism of Cu-catalyzed aryl boronic acid halodeboronation using electrophilic halogen: Development of a base-catalyzed iododeboronation for radiolabeling applications
Molloy, John J.,O'rourke, Kerry M.,Frias, Carolina P.,Sloan, Nikki L.,West, Matthew J.,Pimlott, Sally L.,Sutherland, Andrew,Watson, Allan J. B.
supporting information, p. 2488 - 2492 (2019/04/10)
An investigation into the mechanism of Cu-catalyzed aryl boronic acid halodeboronation using electrophilic halogen reagents is reported. Evidence is provided to show that this takes place via a boronate-driven ipso-substitution pathway and that Cu is not required for these processes to operate: General Lewis base catalysis is operational. This in turn allows the rational development of a general, simple, and effective base-catalyzed halodeboronation that is amenable to the preparation of 125I-labeled products for SPECT applications.
Transition-metal-free hydrogenation of aryl halides: From alcohol to aldehyde
Zheng, Hong-Xing,Shan, Xiang-Huan,Qu, Jian-Ping,Kang, Yan-Biao
supporting information, p. 5114 - 5117 (2017/11/07)
A transition-metal-and catalyst-free hydrogenation of aryl halides, promoted by bases with either aldehydes or alcohols, is described. One equivalent of benzaldehyde affords an equal yield as that of 0.5 equiv of benzyl alcohol. The kinetic study reveals that the initial rate of PhCHO is much faster than that of BnOH, in the ratio of nearly 4:1. The radical trapping experiments indicate the radical nature of this reaction. Based on the kinetic study, trapping and KIE experiments, and control experiments, a tentative mechanism is proposed. As a consequence, a wide range of (hetero)aryl iodides and bromides were efficiently reduced to their corresponding (hetero)arenes. Thus, for the first time, aldehydes are directly used as hydrogen source instead of other well-established alcohol-hydrogen sources.
A 1-alkyl-pyrazol-4-boronic acid frequency method for the synthesis of ester
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Paragraph 0062-0063, (2017/03/14)
The invention belongs to the field of organic chemical synthesis and provides a synthetic method of 1-alkylpyrazole-4-boronic acid pinacol ester. The synthetic method comprises the following three steps: 1. reacting pyrazole with iodine and hydrogen peroxide to generate 4-iodopyrazole A; 2. reacting the 4-iodopyrazole with alkyl halide to obtain an intermediate B; 3. preparing a Grignard reagent of the raw material by using 1-alkyl-4-iodopyrazole as a raw material and adopting an isopropyl Grignard reagent exchange method at 0-30 DEG C, with BE001 as a boron reagent, and reacting to obtain the final product. The technological method is accessible in raw materials, simple and convenient to operate and lower in cost and is a proper method for preparing 1-alkylpyrazole-4-boronic acid pinacol ester compounds.
HETEROARYL COMPOUNDS AND PHARMACEUTICAL APPLICATIONS THEREOF
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Paragraph 00555, (2016/01/25)
The present invention provides herein is a heteroaryl compound or a stereoisomer, a geometric isomer, a tautomer, a racemate, an N-oxide, a hydrate, a solvate, a metabolite, a pharmaceutically acceptable salt or a prodrug thereof, as well as a pharmaceutical composition containing the compound disclosed herein. The present invention also provides herein is use of the compound or the pharmaceutical composition thereof disclosed herein in the manufacture of a medicine for treating autoimmune diseases or proliferative diseases.
2-(HETERO)ARYL-BENZIMIDAZOLE AND IMIDAZOPYRIDINE DERIVATIVES AS INHIBITORS OF ASPARAGIME EMETHYL TRANSFERASE
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Page/Page column 160; 161, (2014/09/03)
Substituted benzimidazole and 3H-imidazo[4,5-b]pyridines or formula I: where X and Y respectively are selected from: (i) N and N; and (ii) N and CR4; A2 is selected from:, a C5 heteroarylene group, containing 2 or 3 ring heteroatoms, where the bonds to L1 and the core are β to one another; L1 is selected from: (i)A1-O-CH2-A2; (ii)A1-CH2-O-A2; (iii)A1-C(=O)-NH-A2; (iv)A1-CH(OH)-A2; (v)A1-CH2-NH-C(=O)-A2; (vi) A1-S-CH2-A2; (vii)A1- CH2-S-A2; (viii)A1-CH2-A2; and (ix)A1-CH(CH3)-O-A2; A1 is phenyl, optionally substituted by F or CF3; their use as pharmaceuticals, and in particular, in treating cancer and hemoglobinopathies.
[1,2,4]TRIAZOLO[4,3-B][1,2,4]TRIAZINE COMPOUND, PREPARATION METHOD AND USE THEREOF
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Paragraph 0109; 0110; 0111, (2013/11/05)
The present invention relates to a structurally novel [1,2,4]triazolo[4,3-b][1,2,4]triazine compounds represented by formula (I) or formula (II), pharmaceutically acceptable salts thereof, prodrugs thereof, hydrates or solvates thereof, and also relates to a preparation method of the compounds, a pharmaceutical composition comprising a therapeutically effective amount of the compounds, as well as the use thereof as protein tyrosine kinase inhibitors, particularly as c-Met inhibitors, in the preparation of medicaments for the prevention and/or treatment of diseases associated with c-Met abnormality.
Reductive iodonio-Claisen rearrangement of iodothiophene diacetates with allylsilanes: Formal synthesis of Plavix
Nguyen, Hai,Khatri, Hem Raj,Zhu, Jianglong
supporting information, p. 5464 - 5466 (2013/09/23)
Iodothiophene diacetates react with allyltrimethylsilanes in the presence of boron trifluoride diethyl etherate to afford corresponding ortho-allyliodothiophenes via reductive iodonio-Claisen rearrangement. This method has been successfully applied to the synthesis of Plavix, a blood clot inhibitor used to reduce the risk of heart attack and stroke.
Carbazole inhibitors of histamine receptors for the treatment of disease
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Page/Page column 56-57, (2012/01/04)
The present invention relates to carbazole compounds, pharmaceutical compositions comprising them, and methods which may be useful as inhibitors of H1R and/or H4R for the treatment or prevention of inflammatory, autoimmune, allergic, and ocular diseases.