作者:Si-Yuan Luo、Zhuo-Ya Tang、Qingjiang Li、Jiang Weng、Sheng Yin、Gui-Hua Tang
DOI:10.1021/acs.joc.1c00229
日期:2021.3.19
of rare natural polyphenols biosynthetically derived from [4 + 2]-cycloaddition of chalcones and dehydroprenylphenols. In this study, kuwanons G (1) and H (2), two bioactive MDAAs with unique dehydroprenylflavonoid dienes, were totally synthesized for the first time in a biomimetic manner. The key features of the convergent route include the use of the Baker–Venkataraman rearrangement, alkylation of
桑树Diels–Alder型加合物(MDAAs)是一组生物合成的稀有天然多酚,它们是由查耳酮和脱氢异戊烯基酚的[4 + 2]-环加成衍生而成的。在这项研究中,kuwanons G(1)和H(2),两个具有独特的脱氢异戊二烯类黄酮二烯的生物活性MDAAs首次完全以仿生方式合成。聚合路线的关键特征包括使用Baker-Venkataraman重排,β-二酮烷基化,分子内环化以及Suzuki-Miyaura偶联以实现亚单元二烯。