作者:Jeremy D. Pettigrew、Peter D. Wilson
DOI:10.1021/jo052371+
日期:2006.2.17
xyloketal A, B, C, D, and G have been prepared in a notably direct manner from 3-hydroxymethyl-2-methyl-4,5-dihydrofuran and a series of corresponding phenols. These syntheses featured a boron trifluoride diethyl etherate-promoted electrophilic aromatic substitution reaction as a key step. In the case of the synthesis of analogues of xyloketal A, the process was found to be highly efficient (up to 93% yield)
由3-羟甲基-2-甲基-4,5-二氢呋喃和一系列相应的酚以明显直接的方式制备了一系列天然产物木酮缩醛A,B,C,D和G的脱甲基类似物。这些合成的关键步骤是三氟化硼二乙基醚化物促进的亲电子芳族取代反应。在合成木酮缩醛A的类似物的情况下,发现该方法是高效的(产率高达93%)。考虑到该转化至少涉及六个单独的反应,这些反应产物的最佳分离产率是显着的。而且,这些合成研究为木酮缩醛天然产物的可能的生物起源提供了重要的见识。