作者:Gustavo Seoane、Gabriel Sagrera
DOI:10.1055/s-0029-1217064
日期:——
Treatment of (benzyloxy)chalcones with trifluoroacetic acid in refluxing chloroform gave several new benzyl(hydroxy)flavanones in high yields and good regioselectivities. By using this procedure, we prepared the natural compound chamanetin in good yield from readily available reagents. benzylation - rearrangements - protecting groups - chamanetin - chalcones
在回流的氯仿中用三氟乙酸处理(苄氧基)查耳酮以高收率和良好的区域选择性得到了几种新的苄基(羟基)黄酮。通过使用此程序,我们从容易获得的试剂中以高收率制备了天然化合物Chamanetin。 苄基化-重排-保护基-香豆素-查尔酮