The preparation of several oxazolines substituted at C-2 by an hetero substituted methyl group is reported. 2-Aminomethyl, 2-azidomethyl, 2-nitromethyl and 2-hydroxymethyl oxazolines were obtained by substitution of the corresponding 2-halogenomethyl oxazolines. On the other hand, 2-benzyloxycarbonylaminomethyl, 2-thiophenylmethyl, 2-selenophenylmethyl oxazolines were prepared by condensation of the appropriate iminoether with a beta-aminoalcohol.
The preparation of several oxazolines substituted at C-2 by an hetero substituted methyl group is reported. 2-Aminomethyl, 2-azidomethyl, 2-nitromethyl and 2-hydroxymethyl oxazolines were obtained by substitution of the corresponding 2-halogenomethyl oxazolines. On the other hand, 2-benzyloxycarbonylaminomethyl, 2-thiophenylmethyl, 2-selenophenylmethyl oxazolines were prepared by condensation of the appropriate iminoether with a beta-aminoalcohol.
A series of etacrynic acid derivatives was synthesized and screened for their in vitro activity against Plasmodium falciparum, as well as their activity against recombinantly expressed falcipain-2 and -3. The two most active compounds of the series displayed IC50 values of 9.0 and 18.8 μM against Plasmodia.
Simple Access to Highly Functional Bicyclic γ- and δ-Lactams: Origins of Chirality Transfer to Contiguous Tertiary/Quaternary Stereocenters Assessed by DFT
作者:Ronan Le Goff、Arnaud Martel、Morgane Sanselme、Ata Martin Lawson、Adam Daïch、Sébastien Comesse
DOI:10.1002/chem.201405094
日期:2015.2.9
Michael acceptors, which leads efficiently to bicyclic lactams. The process is compatible with unsymmetrical electron‐withdrawing groups on the Michael acceptor, which allows the formation of two contiguous and fully controlled tertiary and quaternarystereocenters. In the case of tetrasubstituted Michael acceptors, two adjacent quaternarystereocenters are formed in good yield. Starting from (R)‐phenylglycinol
Synthesis of Oxazolidin-4-ones: Domino <i>O</i>-Alkylation/Aza-Michael/Intramolecular Retro-Claisen Condensation
作者:Abderrahman El Bouakher、Ronan Le Goff、Jordan Tasserie、Jérôme Lhoste、Arnaud Martel、Sébastien Comesse
DOI:10.1021/acs.orglett.6b00851
日期:2016.5.20
An original and rapid domino reaction for access to oxazolidin-4-ones is presented. Simply by heating α-bromoamido alcohol in the presence of KNaCO3 and water with readily prepared Michael acceptors, an unprecedented molecular rearrangement is generated. This new methodology enables the hitherto unreported synthesis of functionalized oxazolidin-4-ones. The process was proved to be compatible with a
Indole derivatives, processes for their preparation, and their use as
申请人:Troponwerke GmbH & Co. KG
公开号:US04513004A1
公开(公告)日:1985-04-23
The invention relates to indole derivatives identified herein by Formula (I) and a method for their preparation. Also included in the invention are compositions containing said indoles and methods for their use as antiphlogistic agents.
Chemo-, Regio-, and Stereoselective Synthesis of Polysusbtituted Oxazolo[3,2-<i>d</i>][1,4]oxazepin-5(3<i>H</i>)ones via a Domino oxa-Michael/aza-Michael/Williamson Cycloetherification Sequence
作者:Abderrahman El Bouakher、Jordan Tasserie、Ronan Le Goff、Jérôme Lhoste、Arnaud Martel、Sébastien Comesse
DOI:10.1021/acs.joc.7b00629
日期:2017.6.2
proved to be chemo-, regio-, and stereoselective and allows the formation of a large diversity of highly functional 7-membered rings in good yields up to 95%. The complete shift of the regioselectivity of the intermediate enolate from a C–C to a C–O bond formation, contrary to the already known alkylations of such ambident nucleophiles, is mostly triggered by stericeffects. The last step of the sequence
提出了在温和条件下从α-溴酰胺基醇和Michael受体开始合成新的oxazolo [3,2- d ] [1,4] oxazepin-5(3 H)-的方法。事实证明,这种多米诺骨牌工艺具有化学选择性,区域选择性和立体选择性,并且可以形成高达95%的高收率的多种多样的高功能7元环。中间烯醇的区域选择性从C–C到C–O键形成的完全转变与这种环境友好的亲核试剂的已知烷基化相反,主要是由空间效应触发的。序列的最后一步是通过DFT建模的,从而给出了该C–C与C–O键移位的一些重要见解。