Copper-Catalyzed Direct Transformation of Secondary Allylic and Benzylic Alcohols into Azides and Amides: An Efficient Utility of Azide as a Nitrogen Source
作者:Balaji V. Rokade、Karthik Gadde、Kandikere Ramaiah Prabhu
DOI:10.1002/ejoc.201500010
日期:2015.4
synthesis of amides has been explored by using secondary alcohols, Cu(ClO4)2·6H2O as a catalyst, and trimethylsilyl azide (TMSN3) as a nitrogen source in the presence of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) at ambient temperature. This method has been successfully adapted to the preparation of azides directly from their corresponding alcohols and offers excellent chemoselectivity in the formation
The embodiments provide compounds of the general Formulas I-IV, as well as compositions, including pharmaceutical compositions, comprising a subject compound. The embodiments further provide treatment methods, including methods of treating a hepatitis C virus infection and methods of treating liver fibrosis, the methods generally involving administering to an individual in need thereof an effective amount of a subject compound or composition.
Direct transformation of arylpropynes to acrylamides via a three-step tandem reaction
作者:Jun Qiu、Ronghua Zhang
DOI:10.1039/c3ob42444h
日期:——
arylpropynes and hydroxylamine hydrochloride through sp3 C–H and C–C bond cleavage has been achieved with DDQ as an oxidant. The mechanistic study shows that the acrylamides are formed through a three-step tandem sequence, including cross-dehydrogenative-coupling (CDC) reaction, aza-Meyer–Schuster rearrangement and Beckmannrearrangement.
Synthesis of a series of unsaturated ketone derivatives as selective and reversible monoamine oxidase inhibitors
作者:Ji Won Choi、Bo Ko Jang、Nam-chul Cho、Jong-Hyun Park、Seul Ki Yeon、Eun Ji Ju、Yong Sup Lee、Gyoonhee Han、Ae Nim Pae、Dong Jin Kim、Ki Duk Park
DOI:10.1016/j.bmc.2015.08.012
日期:2015.10
We have synthesized three categories of alpha,beta-unsaturated carbonyl derivatives and evaluated their MAO-A and MAO-B inhibitory activities. Among them, compound 10b including alpha, beta-unsaturated ketone group showed the most potent and selective MAO-B inhibitory activity (IC50 human MAO-B 16 nM, >6000-fold selective vs MAO-A) and compound 10b exhibited good reversibility compared with selegiline, a well-known irreversible MAO-B inhibitor. However, both a, b-unsaturated amide and ester derivatives exhibited weaker MAO-B inhibition potencies. The docking studies provided insights into the possible binding modes and the key interaction sites of the synthesized MAO-B inhibitors. (C) 2015 Elsevier Ltd. All rights reserved.
Design, synthesis, antiviral evaluation, and In silico studies of acrylamides targeting nsP2 from Chikungunya virus
作者:Beatriz Gois de Souza、Shweta Choudhary、Gabriel Gomes Vilela、Gabriel Felipe Silva Passos、Clara Andrezza Crisóstomo Bezerra Costa、Johnnatan Duarte de Freitas、Grazielle Lobo Coelho、Júlia de Andrade Brandão、Leticia Anderson、Ênio José Bassi、João Xavier de Araújo-Júnior、Shailly Tomar、Edeildo Ferreira da Silva-Júnior