First Syntheses of 2,2-Dimethyl-7-(2′-methylbut-3′-en-2′-yl)-<i>2H</i>-chromen-6-ol and 2-(3′-Methylbut-2′-enyl)-5-(2′-methylbut-3′-en-2′-yl)-1,4-benzoquinone, Novel Prenylated Quinone Derivatives from the New Zealand Brown Alga <i>Perithalia capillaris</i>
作者:Catherine L. Coombes、Christopher J. Moody
DOI:10.1021/jo801057x
日期:2008.9.1
The first syntheses of 2,2-dimethyl-7-(2'-methylbut-3'-en-2'-yl)-2H-chromen-6-ol (1) and 2-(3'-methylbut-2'-enyl)-5-(2'-methylbut-3'-en-2'-yl)-1,4-benzoquinone (2), novel prenylated quinone derivatives from the New Zealand brown alga Perithalia capillaris, are reported, in which the key steps are consecutive Claisen rearrangements that proceed with both high chemo- and regioselectivity.
2,2-二甲基-7-(2'-甲基丁-3'-en-2'-基)-2H-苯并吡喃-6-醇(1)和2-(3'-甲基丁-2'的首次合成-enyl)-5-(2'-methylbut-3'-en-2'-yl)-1,4-苯醌 (2),一种来自新西兰褐藻 Perithalia capillaris 的新型异戊烯基醌衍生物,其中关键步骤是连续的克莱森重排,其具有高化学选择性和区域选择性。