160154-74-5Relevant articles and documents
Facile synthesis of polyhydroxycoumaronochromones with quinones: Synthesis of alkylpolyhydroxy- and alkoxycoumaronochromones from 2′-hydroxyisoflavones
Tsukayama, Masao,Oda, Akihiro,Kawamura, Yasuhiko,Nishiuchi, Masaki,Yamashita, Kazuyo
, p. 6163 - 6166 (2007/10/03)
4′,5,7-Trihydroxy- or 8-alkyl-4′,5,7-trihydroxycoumaronochromones were synthesized by oxidative cyclization of the corresponding 2′-hydroxyisoflavones with o-chloranil under mild conditions. By contrast, alkoxycoumaronochromones were synthesized by oxidative cyclization of the corresponding 2′-hydroxyisoflavones with DDQ.
Regioselective Synthesis of Prenylisoflavones. Syntheses of 2,3-Dehydrokievitone and Related Compounds
Tsukayama, Masao,Tsurumoto, Ken,Kishimoto, Kazuto,Higuchi, Daisuke
, p. 2101 - 2104 (2007/10/02)
The palladium-catalyzed coupling reaction of 2',4',5,7-tetrakis(benzyloxy)-8-iodoisoflavone with 2-methyl-3-butyn-2-ol gave the corresponding 8-(3-hydroxy-3-methylbutynyl)isoflavone 8.Dehydration of the benzoate obtained from 8 in two steps gave a mixture