Process for preparing amine-substituted benzofurans
申请人:——
公开号:US20040054185A1
公开(公告)日:2004-03-18
The present invention relates to processes for preparing amine substituted benzofurans, and more particularly 4-(2-{2-[(2R)-2-methyl-1-pyrrolidinyl]ethyl}-1-benzofuran-5-yl)benzonitrile, and salts thereof. Compounds prepared by the processes of the invention have demonstrated activity as histamine-3 receptor ligands.
Cell-Surface Receptor–Ligand Interaction Analysis with Homogeneous Time-Resolved FRET and Metabolic Glycan Engineering: Application to Transmembrane and GPI-Anchored Receptors
transfer between receptorglycans and fluorescently labeled ligands. We describe GlycoFRET for a GPI-anchored receptor, a G-protein-coupled receptor, and a heterodimeric cytokine receptor in livingcells with excellent sensitivity and high signal-to-background ratios. In contrast to previously described methods, GlycoFRET does not require genetic engineering or antibodies to labelreceptors. Given that
A Facile and Scaleable Synthesis of ABT-239, A Benzofuranoid H<sub>3</sub> Antagonist
作者:Yu-Ming Pu、Timothy Grieme、Ashok Gupta、Daniel Plata、Ashok V. Bhatia、Marlon Cowart、Yi-Yin Ku
DOI:10.1021/op049809c
日期:2005.1.1
scaleable synthesis of a potent and selective histamine H3 receptor antagonist, ABT-239 (1), was developed starting from commercially available 4‘-hydroxy-biphenyl-4-carbonitrile (2). The synthesis comprised four chemical steps and a salt formation step with an overall yield of 40%. A highly selective monoiodination of a phenol was developed and used to prepare iodophenol (3b) in near quantitative
从市场上可买到的4'-羟基-联苯-4-腈(2)开始开发了一种有效且选择性的有效的选择性组胺H 3受体拮抗剂ABT-239(1)的合成方法。该合成包括四个化学步骤和一个成盐步骤,总产率为40%。苯酚的高选择性单碘化反应得到了发展,并用于在少量H 2 SO 4存在的情况下在OH中使用NIS在OH中以接近定量的产率制备碘代苯酚(3b)。碘酚(3b)与丁炔醇(4a)的钯催化交叉偶联反应提供了苯并呋喃(5),一步一步即可获得> 80%的收率,然后转到1。该新方法无需在整个合成过程中进行色谱纯化,并已成功放大证明可制备出1.7千克的目标ABT-239(1)。