Bulletin of the Chemical Society of Japan p. 136 - 141 (1985)
Update date:2022-08-04
Topics:
Tsukayma, Masao
Fujimoto, Kunihiro
Horie, Tokunaru
Masumura, Mitsuo
Nakayama, Mitsuru
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.
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