82458-45-5Relevant academic research and scientific papers
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.
Synthesis of Licoisoflavone A and Related Compounds
Tsukayma, Masao,Fujimoto, Kunihiro,Horie, Tokunaru,Masumura, Mitsuo,Nakayama, Mitsuru
, p. 136 - 141 (2007/10/02)
2',4',5,7-Tetrahydroxyisoflavone was partially benzoylated with benzoyl chloride to give 7-benzoyloxy-2',4',5-trihydroxyisoflavone.The condensation of the 7-(benzoyloxy)isoflavone with 2-methyl-3-buten-2-ol, followed by the hydrolysis of the resultant 3'-(3-methyl-2-butenyl)isoflavone gave licoisoflavone A.Its 5'-(3-methyl-2-butenyl) isomer was also synthesized from 5-benzoyloxy-2',4',7-trihydroxyisoflavone in a similar manner.
SYNTHESES OF LICOISOFLAVONE A AND 5'-ALKENYL ISOMER
Tsukayama, Masao,Fujimoto, Kunihiro,Horie, Tokunaru,Yamashita, Yoshiro,Masumura, Mitsuo,Nakayama, Mitsuru
, p. 675 - 678 (2007/10/02)
2',4',5,7-Tetrahydroxyisoflavone was partially benzoylated with benzoyl chloride to give 7-benzoyloxy-2',4',5-trihydroxyisoflavone.The condensation of 7-benzoyloxyisoflavone with 2-methyl-3-buten-2-ol, followed by the hydrolysis of the resultant 3'-(3-met
