Regio- and Chemoselective Multiple Functionalization of Chloropyrazine Derivatives. Application to the Synthesis of Coelenterazine
作者:Marc Mosrin、Tomke Bresser、Paul Knochel
DOI:10.1021/ol901275n
日期:2009.8.6
Successive regio- and chemoselective metalations of chloropyrazines using TMPMgCl·LiCl and TMPZnCl·LiCl furnish, after trapping with electrophiles, highly functionalized pyrazines in high yields. Application to a synthesis of coelenterazine, a bioluminescent natural product in jellyfish Aequorea victoria, in nine steps (9% overall yield) is reported.
(EN) There are provided novel pyrazines and a method of making them by reacting 5-halo substituted pyrazines with an arylboronic acid, the novel pyrazines can be used in the synthesis of coelenterazine.(FR) On décrit de nouvelles pyrazines et un procédé de fabrication de ces dernières selon lequel on fait réagir des pyrazines 5-halo substituées avec un acide arylboronique. Les nouvelles pyrazines peuvent être utilisées dans la synthèse de la coelentérazine.