Catalyst-free three-component synthesis of highly functionalized 2,3-dihydropyrroles

Catalyst-free three-component synthesis of highly functionalized 2,3-dihydropyrroles

Dong Wang,a  Linna Li,a  Hairong Feng,a  Hua Sun,a  Fabrice Almeida-Veloso,b  Marine Charavin,b Peng Yua  and  Laurent Désaubry*abc 

 Author affiliations

*Corresponding authors

aSino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
E-mail: desaubry@unistra.fr

bLaboratory of Therapeutic Innovation (UMR 7200), University of Strasbourg-CNRS, Faculty of Pharmacy, 67400 Illkirch, France

cLaboratory of Biomolecules (UMR7203), Sorbonne University – CNRS, 4 place Jussieu, 75005 Paris, France

Abstract

An efficient synthesis of fully substituted 2,3-dihydropyrroles has been achieved in one step through the three-component reaction of amines, aromatic aldehydes and α-ketoamides. This atom-economical and catalyst-free reaction is highly stereoselective and generates underexplored heterocycles in a single step. These compounds were examined in an enzymatic assay that led to the identification of potent α-glucosidase inhibitors, thereby demonstrating the utility of this novel methodology in medicinal chemistry.

http://pubs.rsc.org/en/Content/ArticleLanding/2018/GC/C8GC00987B?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2FGC+%28RSC+-+Green+Chem.+latest+articles%29#!divAbstract

N-(4-Chlorophenyl)-2-oxopropanamide (3a) Cl H N O O 3a Using 4-chloroaniline (1.0 g, 7.8 mmol), in accordance with General Procedure A, the title compound 3a was obtained (810 mg, 52% yield) as a white solid. 1H NMR (400 MHz, CDCl3) δ 8.73 (s, 1H), 7.60 (d, J = 8.0 Hz, 2H), 7.34 (d, J = 8.0 Hz, 2H), 2.57 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 197.1, 157.6, 135.0, 130.6, 129.5, 121.1, 24.2. HRMS (ESI-TOF) m/z calcd. for C9H7NO2Cl- [M-H]- : 196.0171, found 196.0170

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