515863-75-9Relevant academic research and scientific papers
Regioselective synthesis of 6-prenylpolyhydroxyisoflavone (wighteone) and wighteone hydrate with hypervalent iodine
Hossain, Mohammad M.,Tokuoka, Takanori,Yamashita, Kazuyo,Kawamura, Yasuhiko,Tsukayama, Masao
, p. 1201 - 1211 (2007/10/03)
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. Copyright Taylor & Francis Group, LLC.
Regioselective synthesis of 6-alkyl- and 6-prenylpolyhydroxyisoflavones and 6-alkylcoumaronochromone derivatives
Tsukayama, Masao,Wada, Hironari,Kawamura, Yasuhiko,Yamashita, Kazuyo,Nishiuchi, Masaki
, p. 1285 - 1289 (2007/10/03)
The palladium-catalyzed coupling reaction of 6-iodoisoflavone, prepared from 3′-iodoacetophenone derivative, with 2-methyl-3-butyn-2-ol gave 6-alkynylisoflavone derivative, which was hydrogenated to give 6-alkylhydroxyisoflavone (luteone hydrate) (2). Dehydration of 2 gave 2′,4′,5,7-tetrahydroxy-6-prenylisoflavone (luteone) (1). Wighteone hydrate (3) was also synthesized from 6-iodotris(benzyloxy)isoflavone in a similar manner. 6-Alkyl-4′5,7-trihydroxy-coumaronochromone (4) was synthesized by oxidative cyclization of 2 with o-chloranil.
