Synthesis 2001(5): 0768-0772
DOI: 10.1055/s-2001-12764
PAPER
© Georg Thieme Verlag Stuttgart · New York

2,6-Diamino-3,5-diaryl-1,4-pyrazine Derivatives as Novel Antioxidants

Jean-François Cavaliera, Maggi Burtonb, Catherine De Tollenaerea, Frédérique Dussarta, Cécile Marchandb, Jean-François Reesb, Jacqueline Marchand-Brynaert*a
a Unité de Chimie Organique et Médicinale, Université Catholique de Louvain, Bâtiment Lavoisier, place L. Pasteur 1, 1348 Louvain-la-Neuve, Belgium
b Unité de Biologie Animale, Université Catholique de Louvain, Bâtiment Carnoy, place Croix du Sud 4, 1348 Louvain-la-Neuve, Belgium
Fax: +32(010)474168; e-Mail: marchand@chor.ucl.ac.be;
Further Information

Publication History

Received 18 September 2000
Publication Date:
28 September 2004 (online)

Abstract

The coupling of arylboronic acids with 2,6-diamino-3,5-dibromo-1,4-pyrazine (6) gave 2,6-diamino-3,5-diaryl-1,4-pyrazines (7). The reaction of 7 with methyl glyoxal in aqueous EtOH-HCl led to the N,N"-disubstituted products 8, instead of the expected bicyclic imidazolopyrazinones 1. The 2,6-bis[1-(ethoxycarbonyl)-ethylamino]-3,5-diaryl-1,4-pyrazines 8 are powerful inhibitors of the AAPH-induced linoleate peroxidation.