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Chemistry of Natural Compounds

, Volume 12, Issue 5, pp 539–543 | Cite as

Polyphenols and acids of Ulugbekia tschimganica

  • M. A. Khasanova
  • G. K. Nikonov
Article
  • 22 Downloads

Summary

From the herbage ofUlugbekia tschimganica (B. Fedtsch.) Zak two new phenolcarboxylic acids have been isolated in the form of their methyl derivatives: methyl ulugbekate C19H18O6 (I) and methyl ulugbinate acid C20H22O7 (II), mp 228°C.

It has been established that (I) most probably has the structure of 1,5-bis(3′,4′-dihydroxyphenyl)-3-methoxycarbonylpent-1-ene and (II) that of 1,5-bis(2′,4′-dihydroxyphenyl)-3-methoxycarbonylpent-1-ene and (II) that of 1,5-bis(2′,4′-dihydroxyphenyl)-3-methoxycarbonyl-4-methoxypent-2-ene.

The presence of fumaric, caffeic, and chlorogenic acids, and also of mono and dimethyl fumarates has been established chromatographically.

The roots have yielded a new phenolic terpenoid, C16H20O4, for which 3-(2,4-dihydroxyphenyl)-1-(5,5-dimethyltetrahydropyran-2-ylidene)propene has been suggested as one of the most likely structures.

Keywords

Gossypol Phenolic Hydroxyl Dihydroxyphenyl Dimethyl Fumarate Tertiary Carbon Atom 

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • M. A. Khasanova
  • G. K. Nikonov

There are no affiliations available

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