A Facile Synthetic Approach to Prenylated Flavanones: First Total Syntheses of (±)-Bonannione A and (±)-Sophoraflavanone A
作者:Yongqiang Wang、Wenfei Tan、Weidong Z. Li、Yulin Li
DOI:10.1021/np0001124
日期:2001.2.1
syntheses of both C-8 and C-6 prenylated flavonoids has been developed that features a highly regioselective prenylation of 2,4,6-trihydroxyacetophenone and regioselective cyclization of prenylated polyhydroxy chalcones. Thus, the first efficient total syntheses of (+/-)-sophoraflavanone A (1) and (+/-)-bonannione A (2), two naturally occurring geranylated flavanones with antibacterial activities,
已经开发了一种简便而有效的合成C-8和C-6戊烯基黄酮的方法,该方法具有2,4,6-三羟基苯乙酮的高区域选择性烯丙基化和异戊烯化多羟基查耳酮的区域选择性环化的特征。因此,从关键中间体3开始,已经实现了第一个有效的全合成(+/-)-磺基黄烷酮A(1)和(+/-)-苯并二酮A(2),这是两种具有抗菌活性的天然存在的香叶基黄烷酮。通过对geranylated四羟基查耳酮的区域选择性环化4。