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Chemistry of Natural Compounds

, Volume 6, Issue 1, pp 12–15 | Cite as

Structure of xanthalin

  • A. I. Sokolova
  • G. K. Nikonov
Article
  • 18 Downloads

Conclusions

1. Xanthalin has been shown to have the structure of 2′, 2′-dimethyl-3′, 4′,-diangeloyloxy-3′, 4′-dihydropyrano-5′, 6′:6, 7-coumarin on the basis of the preparation of a number of derivatives and cleavage products.

2. The following products of the alkaline hydrolysis of xanthalin have been isolated and characterized for the first time: (±)-3′, 4′-dihydroxy-3′, 4′-dihydroxanthyletin (isokhellactone), C14H14O5, with mp 213–215° C and (−)-trans-3′-hydroxy-4′-methoxy-3′, 4′-dihydroxanthyletin (isomethylkhellactone, C15H16O5, with mp 136.5–138° C and [α] D 20 −47.7 (ethanol).

Keywords

Sodium Carbonate Solution Platinum Oxide Coumarin Ring Combine Ether Extract Bromine Solution 

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References

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    A. I. Sokolova, G. K. Nikonov, M. E. Perel'son, G. P. Syrova, and Yu. N. Sheinker, KhPS [Chemistry of Natural Compounds], 280, 1968.Google Scholar
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    E. B. Zorin, G. K. Nikonov, and G. Yu. Pek, KhPS [Chemistry of Natural Compounds], 3, 1967.CrossRefGoogle Scholar
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    J. Lemmich, E. Lemmich, and B. E. Nielsen, Acta Chem. Send., 20, 1966.Google Scholar
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Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • A. I. Sokolova
    • 1
  • G. K. Nikonov
    • 1
  1. 1.All-Union Scientific-Research Institute of Medicinal PlantsUSSR

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