Enantiospecific Syntheses of Hongoquercins A and B and Chromazonarol
作者:Dattatraya H. Dethe、Ganesh M. Murhade、Balu D. Dherange、Susanta Kumar Sau
DOI:10.1002/ejoc.201601503
日期:2017.2.17
Environmentally benign and highly atom economic catalytic Friedel-Crafts alkylation reaction and diastereoselective C-O bond formation reaction has been developed. The scope and generality of this reaction was amply illustrated by synthesis of chromazonarol, hongoquercin A and B and analogues thereof.
已开发出环境友好且具有高原子经济性的催化 Friedel-Crafts 烷基化反应和非对映选择性 CO 键形成反应。该反应的范围和一般性通过 chromazonarol、hongoquercin A 和 B 及其类似物的合成得到充分说明。
Deconstruction of 18β-glycyrrhetinic acid into gram scale multifunctional chiral synthons
The transformation of 18β-glycyrrhetinic acid into two significant chiral synthons has been successfully showcased employing gentle reaction conditions. The effectiveness of one of these chiral synthons has been exhibited by utilizing it as a key building block for the synthesis of tetracyclic meroterpenoid natural products (+)-hongoquercins A and B.
18β-甘草次酸转化为两个重要的手性合成子已在温和的反应条件下成功展示。这些手性合成子之一的有效性已通过将其用作合成四环类萜天然产物 (+)-红槲皮素 A 和 B 的关键构件而得到展示。