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Chemistry of Natural Compounds

, Volume 11, Issue 6, pp 744–750 | Cite as

The structure of the flavonoids from Rhodiola algida. II

  • T. T. Pangarova
  • G. G. Zapesochnaya
Article

Summary

New flavonoid glycosides have been obtained from the roots ofRhodiola algida: rhodalgin (I), composition C20H18O11, mp 239–240°C; acetylrhodalgin (II) C22H20O12, mp 223–224°C; diacetylrhodalgin (III), C24H22O13, mp 208–209°C; and triacetylrhodalgin (IV), C26H24O14, mp 230–231°C.

It has been established that they have the following structures: (I), 3,4′,5,7,8-pentahydroxyflavone 8-O-α-L-arabinopyranoside; (II), 3,4′,5,7,8-pentahydroxyflavone 8-O-(3″-O-acetyl-α-L-arabinopyranoside; (III), 3,4′,5,7,8-pentahydroxyflavone 8-O-(2″,3″-di-O-acetyl)-β-D-xylopyranoside; and (IV), 3,4′,5,7,8-pentahydroxyflavone 8-O-(2″,3″4″-tri-O-acetyl)-β-D-xylopyranoside. The α-L-arabinopyranose and β-D-xylopyranose are present in these compounds in the C1 conformations.

In the performance of this investigation, the authors consulted O. S. Chizhov, and M. B. Zoltarev (N. D. Zelinskii Institute of Organic Chemistry of the Academy of Sciences of the USSR) and V. I. Sheichenko (All-Union Institute of Medicinal plants).

Keywords

Glycoside Myricetin Anomeric Proton Acetoxy Group Pentahydroxyflavone 

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Copyright information

© Plenum Publishing Corporation 1976

Authors and Affiliations

  • T. T. Pangarova
  • G. G. Zapesochnaya

There are no affiliations available

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