Studies on the Constituents of Japanese and Chinese Crude Drugs. IV. On the Constituents of Pueraria Root. (2)

Authors:
  • TMTakao Murakami
    Takao Murakami
  • YNYoshihiro Nishikawa
    Yoshihiro Nishikawa
  • TAToshio Ando
    Toshio Ando
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Abstract
Puerarin, C21H20O9 m.p. 187°(decomp.), and the substance f, which were isolated from Pueraria root were studied to establish their structure. puerarin was proved to be 8-D-glucopyranosyl-4', 7-dihydroxyisoflavone (=8-D-glucopyranosyldaidzein) by oxidation of its dimethyl ether with sodium iodate to 8-formyl-4', 7-dimethoxyisoflavone and by ozonolysis of puerarin to D-glucose and D-arabinose. On hydrolysis with sulfuric acid, the substance f yielded puerarin and D-xylose.