Synthesis of 5-arylated N-arylthiazole-2-amines as potential skeletal muscle cell differentiation promoters
摘要:
A series of N-arylthiazole-2-amines was prepared and their biological activity for the promotion of skeletal muscle cell differentiation was investigated, a process of significant importance in muscle regeneration. A versatile new synthetic route towards the target compounds was developed and the substrate scope of this methodology was investigated. Introduction of the 2-aminoaryl substituent was carried out via nucleophilic substitution reactions in excellent yields. Furthermore, the aryl in 5-position was introduced applying a direct arylation reaction, a major improvement compared to reported synthetic routes regarding atom efficiency and sustainability. (C) 2011 Elsevier Ltd. All rights reserved.
Generating Active “L-Pd(0)” via Neutral or Cationic π-Allylpalladium Complexes Featuring Biaryl/Bipyrazolylphosphines: Synthetic, Mechanistic, and Structure–Activity Studies in Challenging Cross-Coupling Reactions
作者:A. J. DeAngelis、Peter G. Gildner、Ruishan Chow、Thomas J. Colacot
DOI:10.1021/acs.joc.5b01005
日期:2015.7.2
are efficient for a wide array of challenging C–C and C–X (X = heteroatom) cross-coupling reactions. Their high activity is correlated to their facile activation to a 12-electron-based “L-Pd(0)” catalystunder commonly employed conditions for cross-coupling reactions, noninhibitory byproduct release upon activation, and suppression of the off-cycle pathway to form dinuclear (μ-allyl)(μ-Cl)Pd2(L)2 species
common structure found in drug agents, natural products and fine chemicals. Reported herein is an alternative access to heteroarylamine via radical-radical cross-coupling pathway, powered by visible light catalysiswithout any aid of externaloxidant and reductant. Only by visible light irradiation of a photocatalyst such as a metal-free photocatalyst, a cascade single electron transfer event of amines
[EN] THIAZOLE AND PYRAZOLE DERIVATIVES AS FLT-3 KINASE INHIBITORS<br/>[FR] DERIVES DE THIAZOLE ET DE PYRAZOLE EN TANT QU'INHIBITEURS DE LA KINASE FLT-3
申请人:NOVARTIS AG
公开号:WO2005047273A1
公开(公告)日:2005-05-26
The invention relates to thiazole and pyrazole derivatives of formula (I) wherein Q is S and X is C, or Q is CH and X is N; R1 is unsubtituted or substituted phenyl; and R2 is unsubstituted or substituted aryl or heteroaryl; oa a salt of the said compounds, and to processes for the preparation thereof, to pharmaceutical compositions comprising such derivatives and to the use of such derivatives for the preparation of pharmaceutical compositions for the treatment especially of a proliferative disease, such as a tumour disease, in particular such diseases which respond to an inhibition of the FIt-3 kinase.
A palladium(II) complex of formula (1) or a palladium(II) complex of formula (3).
Also, processes for the preparation of the complexes, and their use in carbon-carbon and carbon-heteroatom coupling reactions.
shown that the introduction of substituents to both the thiazole and amine moieties of the compounds under study strongly influences their UV/Vis spectra. Initial substances and obtained hybridcompounds have been tested in vitro as anticancer agents. Target compounds showed selectivity towards M-HeLa tumor cell lines and were found to be more active than starting benzofuroxan and aminothiazoles. Furthermore
通过芳香亲核取代反应合成了一系列含有苯并呋喃和2-氨基噻唑部分的新型杂化化合物。可能的反应途径已经被量子化学地考虑,这使我们能够建议最可能的产物。属于合成系列的一种化合物的 X 射线数据证实了量子化学结果。结果表明,在所研究的化合物的噻唑和胺部分中引入取代基会强烈影响其紫外/可见光谱。初始物质和获得的杂化化合物已作为抗癌剂进行了体外测试。目标化合物对 M-HeLa 肿瘤细胞系表现出选择性,并且被发现比起始苯并呋喃酮和氨基噻唑更具活性。此外,与阿莫昔芬相比,它们对正常肝细胞的毒性要小得多。所研究的化合物的作用机制可能与细胞凋亡的诱导有关,细胞凋亡沿着线粒体途径进行。因此,新的苯并呋喃杂化物是作为抗癌剂进一步开发的有希望的候选者。