A series of heteroaromatic analogs of pregabalin has been identified that possess anticonvulsant activity in the DBA/2 mouse model. The methods of synthesis and preliminary pharmacology are discussed herein. (C) 2005 Elsevier Ltd. All rights reserved.
Palladium-acetate catalyst for regioselective direct arylation at C2 of 3-furanyl or 3-thiophenyl acrylates with inhibition of Heck type reaction
作者:Lu Chen、Christian Bruneau、Pierre H. Dixneuf、Henri Doucet
DOI:10.1016/j.tet.2012.12.061
日期:2013.6
efficient catalyticsystem for the directarylation of thiophene and furan derivatives bearing an acrylate at C3. The selectivity of the reaction strongly depends on the nature of the coordinating base. Na2CO3 and Li2CO3 favours the Heck type reaction; whereas the use of KOAc or CsOAc promotes regioselective arylation at C2 of the heteroarene and inhibits the Heck type reaction. The directarylation products
已发现Pd(OAc)2 / KOAc是一种有效的催化体系,用于在C3处带丙烯酸酯的噻吩和呋喃衍生物直接芳基化。反应的选择性很大程度上取决于配位碱的性质。Na 2 CO 3和Li 2 CO 3有利于Heck型反应。而使用KOAc或CsOAc则可促进杂芳烃C2的区域选择性芳基化并抑制Heck型反应。仅使用0.1mol%的催化剂以中等至良好的产率获得直接芳基化产物。芳基溴上的吸电子取代基,如乙酰基,甲酰基,酯基,腈基或硝基,有利于反应;而给电子体的人是不利的。
METHODS OF TREATMENT USING ARYLCYCLOPROPYLAMINE COMPOUNDS
申请人:Duke University
公开号:US20130178520A1
公开(公告)日:2013-07-11
Described herein are methods of treating Parkinson's disease using arylcyclopropylamine compounds.
本文描述了使用芳基环丙胺化合物治疗帕金森病的方法。
Photoinduced Regioselective Olefination of Arenes at Proximal and Distal Sites
作者:Argha Saha、Srimanta Guin、Wajid Ali、Trisha Bhattacharya、Sheuli Sasmal、Nupur Goswami、Gaurav Prakash、Soumya Kumar Sinha、Hediyala B. Chandrashekar、Sanjib Panda、S. S. Anjana、Debabrata Maiti
DOI:10.1021/jacs.1c12311
日期:2022.2.2
regioselectivity. Often, the high thermal energy required to promote olefination leads to multiple site functionalizations. To this aim, we established a photoredox catalytic system constituting a merger of palladium/organo-photocatalyst (PC) that forges oxidative olefination in an explicit regioselective fashion with diverse arenes and heteroarenes. Visible light plays a significant role in executing “regioresolved”
Combining a <i>Clostridial</i> Enzyme Exhibiting Unusual Active Site Plasticity with a Remarkably Facile Sigmatropic Rearrangement: Rapid, Stereocontrolled Entry into Densely Functionalized Fluorinated Phosphonates for Chemical Biology
作者:Kaushik Panigrahi、Gregory A. Applegate、Guillaume Malik、David B. Berkowitz
DOI:10.1021/jacs.5b00022
日期:2015.3.18
absolute stereochemistry and (ii) a new [3,3]-sigmatropic rearrangement of the thiono-Claisen variety that is among the fastest sigmatropic rearrangements yet reported. Here, a pronounced rate enhancement is achieved by distal fluorination. This rearrangement is completely stereoretentive, parlaying the enzymatically established β-C-O stereochemistry in the substrate into the δ-C-S stereochemistry in the