Regioselective Synthesis of 6‐Prenylpolyhydroxyisoflavone (Wighteone) and Wighteone Hydrate with Hypervalent Iodine
作者:Takanori Tokuoka、Kazuyo Yamashita、Yasuhiko Kawamura、Masao Tsukayama、Mohammad M. Hossain
DOI:10.1080/00397910500514121
日期:2006.5
The oxidative rearrangement of 3'-iodotetraalkoxychalcone with [hydroxyl(tosyloxy)iodo]benzene, followed by cyclization of the resultant acetal gave 6-iodotrialkoxyisoflavone. The coupling reaction of the isoflavone with 2-methyl-3-butyn-2-ol gave 6-alkynylisoflavone, whose hydrogenation gave wighteone hydrate. Wighteone was synthesized by dehydration of wighteone hydrate.