meta-Selective C–H Borylation of Benzamides and Pyridines by an Iridium–Lewis Acid Bifunctional Catalyst
作者:Lichen Yang、Nao Uemura、Yoshiaki Nakao
DOI:10.1021/jacs.9b03138
日期:2019.5.15
We report herein the iridium-catalyzed meta-selective C-H borylation of benzamides by using a newly designed 2,2'-bipyridine (bpy) ligand bearing an alkylaluminum biphenoxide moiety. We also demonstrate the iridium-catalyzed C3-selective C-H borylation of pyridine with a 1,10-phenanthroline (Phen) ligand bearing an alkylborane moiety. It is proposed that the Lewisacid-base interaction between the
<i>para</i>
‐Selective C−H Borylation of (Hetero)Arenes by Cooperative Iridium/Aluminum Catalysis
作者:Lichen Yang、Kazuhiko Semba、Yoshiaki Nakao
DOI:10.1002/anie.201701238
日期:2017.4.18
para‐SelectiveC−H borylation of benzamides and pyridines has been achieved by cooperative iridium/aluminum catalysis. A combination of iridium catalysts commonly employed for arene C−H borylation and bulky aluminum‐based Lewis acid catalysts provides an unprecedented strategy for controlling the regioselectivity of C−H borylation to give variously substituted (hetero)arylboronates, which are versatile
Iridium-Catalyzed CH Activation versus Directed<i>ortho</i>Metalation: Complementary Borylation of Aromatics and Heteroaromatics
作者:Timothy E. Hurst、Todd K. Macklin、Maike Becker、Eduard Hartmann、Wolfgang Kügel、Jean-Christophe Parisienne-La Salle、Andrei S. Batsanov、Todd B. Marder、Victor Snieckus
DOI:10.1002/chem.201000401
日期:2010.7.19
Systematic studies are presented demonstrating the complementarity of directed ortho metalation (DoM) and Ir‐catalyzed strategies for the provision of borylated aromatics and their subsequent Suzuki–Miyaura coupling reactions. A new concept, the use of the TMS group, readily introduced by DoM, as a latent regiodirective moiety to overcome the otherwise problematic production of isomeric borylated product
进行了系统研究,证明了定向邻位金属化(D o M)和Ir催化策略的互补性,这些策略提供了硼化芳族化合物及其随后的Suzuki-Miyaura偶联反应。提出了一种新的概念,即由D o M容易引入的TMS基团作为潜在的区域定向基团,以克服异构化的硼酸酯化产物混合物的否则成问题的生产。附加电子试剂诱导的本位-deborylation和d ö的BPIN产品的M个反应说明。
[EN] SPIROCYCLIC HETEROCYCLIC DERIVATIVES AND METHODS OF THEIR USE<br/>[FR] DERIVES HETEROCYCLIQUES SPIROCYCLIQUES ET LEURS METHODES D'UTILISATION
申请人:ADOLOR CORP
公开号:WO2005033073A3
公开(公告)日:2005-07-28
Spirocyclic Delta Opioid Receptor Agonists for the Treatment of Pain: Discovery of <i>N</i>,<i>N</i>-Diethyl-3-hydroxy-4-(spiro[chromene-2,4′-piperidine]-4-yl) Benzamide (ADL5747)
作者:Bertrand Le Bourdonnec、Rolf T. Windh、Lara K. Leister、Q. Jean Zhou、Christopher W. Ajello、Minghua Gu、Guo-Hua Chu、Paul A. Tuthill、William M. Barker、Michael Koblish、Daniel D. Wiant、Thomas M. Graczyk、Serge Belanger、Joel A. Cassel、Marina S. Feschenko、Bernice L. Brogdon、Steven A. Smith、Michael J. Derelanko、Steve Kutz、Patrick J. Little、Robert N. DeHaven、Diane L. DeHaven-Hudkins、Roland E. Dolle
DOI:10.1021/jm900773n
日期:2009.9.24
Selective, nonpeptidic delta opioid receptor agonists have been the subject of great interest as potential novel analgesic agents. The discoveries of BW373U86 (1) and SNC80 (2) contributed to the rapid expansion of research in this field. However, poor drug-like properties and low therapeutic indices have prevented clinical evaluation of these agents. Doses of I and 2 similar to those required for analgesic activity produce convulsions in rodents and nonhuman primates. Recently, we described a novel series of potent, selective. and orally bioavailable delta opioid receptor agonists. The lead derivative, ADL5859 (4), is currently in phase It proof-of-concept studies for the management of pain. Further structure activity relationship exploration has led to the discovery of ADL5747 (36), which is approximately 50-fold more potent than 4 in an animal model of inflammatory pain. On the basis of its favorable efficacy, safety, and pharmacokinetic profile, 36 was selected as a clinical candidate for the treatment of pain.