作者:Yves Janin、Soizic Prado、Valérie Toum、Brigitte Saint-Joanis、Sylvie Michel、Michel Koch、Stewart Cole、François Tillequin
DOI:10.1055/s-2007-966019
日期:——
In the course of our work on the synthesis of analogues of the specific antimycobacterial 3,3-dimethyl-3H-benzofuro[3,2-f]chromene, we prepared the previously unreported 5-bromo-2,2-dimethyl-2H-chromen-6-ol. We wish to report here an original synthetic scheme using this compound. The preparation of various 5-bromo-2,2-dimethyl-6-(aryloxy)-2H-chromenes was first investigated. This was followed by a palladium-catalysed cyclisation reaction, which takes place only in the presence of air, and leads to 3,3-dimethyl-3H-benzofuro[3,2-f]chromenes or 3,3-dimethyl-3H-4,7-dioxa-10-aza-benzo[c]fluorene. The antimycobacterial properties of these analogues have been investigated.
在合成特定的抗分枝杆菌药物3,3-二甲基-3H-苯并呋喃并[3,2-f]苯并吡喃的类似物时,我们制备了以前未报道的5-溴-2,2-二甲基-2H-苯并吡喃-6-醇。我们想在此报告使用该化合物的原始合成方案。首先研究了各种5-溴-2,2-二甲基-6-(芳基氧基)-2H-苯并吡喃的制备。随后进行了钯催化的环化反应,该反应仅在有空气存在的情况下发生,并导致3,3-二甲基-3H-苯并呋喃并[3,2-f]苯并吡喃或3,3-二甲基-3H-4,7-二氧杂-10-氮杂苯并[c]芴。这些类似物的抗分枝杆菌特性已经过研究。