Triple CH functionalization: Palladium‐catalyzed synthesis of benzofurans and coumarins by reacting phenols and unactivated olefins is described. The reaction comprises sequential CH functionalization and shows diverse functional group compatibility. Preliminary mechanistic studies shed light into the possible mechanisms.
Modular Construction of 2-Substituted Benzo[b]furans from 1,2-Dichlorovinyl Ethers
作者:Laina M. Geary、Philip G. Hultin
DOI:10.1021/ol902307m
日期:2009.12.3
(E)-1,2-Dichlorovinyl ethers and amides are easily accessible from trichloroethylene via nucleophilic addition across in situ synthesized dichloroacetylene. A one-pot, sequential Suzuki-Miyaura coupling/intramolecular direct arylation between dichlorovinyl ethers and organoboronic acids provides easy access to a variety of benzofurans in only two steps from inexpensive commercially available compounds. The method is extendable to the preparation of indoles from the analogous dichlorovinyl amides.
2-Substituted Benzo[b]furans from (E)-1,2-Dichlorovinyl Ethers and Organoboron Reagents: Scope and Mechanistic Investigations into the One-Pot Suzuki Coupling/Direct Arylation
作者:Laina M. Geary、Philip G. Hultin
DOI:10.1002/ejoc.201000787
日期:2010.10
phenols, boronic acids or other organoboron reagents, and trichloroethylene. The overall process requires only two synthetic steps, with the key step being a one-pot sequential Suzukicross-coupling/direct arylationreaction. The method tolerates many useful functional groups and does not require the installation of any other activating functionality. The modular nature of the process permits the rapid
MAO Inhibitory Activity of 2-Arylbenzofurans versus 3-Arylcoumarins: Synthesis, in vitro Study, and Docking Calculations
作者:Giulio Ferino、Enzo Cadoni、Maria João Matos、Elias Quezada、Eugenio Uriarte、Lourdes Santana、Santiago Vilar、Nicholas P. Tatonetti、Matilde Yáñez、Dolores Viña、Carmen Picciau、Silvia Serra、Giovanna Delogu
DOI:10.1002/cmdc.201300048
日期:2013.6
Monoamine oxidase (MAO) is an important drug target for the treatment of neurological disorders. Several 3‐arylcoumarin derivatives were previously described as interesting selective MAO‐B inhibitors. Preserving the trans‐stilbene structure, a series of 2‐arylbenzofuran and corresponding 3‐arylcoumarin derivatives were synthesized and evaluated as inhibitors of both MAO isoforms, MAO‐A and MAO‐B. In general
单胺氧化酶(MAO)是治疗神经系统疾病的重要药物靶标。以前有几种3-芳基香豆素衍生物被描述为有趣的选择性MAO-B抑制剂。保留了反式二苯乙烯结构,合成了一系列的2-芳基苯并呋喃衍生物和相应的3-芳基香豆素衍生物,并将其评估为MAO-A和MAO-B的抑制剂。通常,发现两种类型的衍生物都是选择性的MAO-B抑制剂,IC 50值在纳摩尔至微摩尔范围内。5-硝基-2-(4-甲氧基苯基)苯并呋喃(8)是苯并呋喃系列中活性最高的化合物,具有MAO-B选择性和可逆抑制作用(IC 50 = 140 n M)。具有与化合物8相同的取代模式的3-(4'-甲氧基苯基)-6-硝基香豆素(15)被发现是香豆素系列中活性最高的MAO-B抑制剂(IC 50 = 3 n M) 。但是,3-苯基香豆素14的活性在相同范围内(IC 50 = 6 n M),可逆,并且选择性也比化合物15高出几倍。将最具活性的化合物对接到MAO