Facile synthesis of norwogonin, isoscutellarein, and herbacetin
摘要:
An expeditious synthesis of norwogonin, isoscutellarein, and herbacetin, has been accomplished by a strategy featuring a borylation of sterically hindered aryl iodide and a one-pot oxidation to generate the C-3 and C-8 OH groups. The total synthesis gives excellent yields and conventional flash column chromatography is not needed for purification. (C) 2016 Elsevier Ltd. All rights reserved.