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6-Deoxyjacareubin.

A C Doriguetto1, M H Santos, J A Ellena

  • 1Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369 - CEP 13560-970, São Carlos, SP, Brazil. dorigue@if.sc.usp.br

Acta Crystallographica. Section C, Crystal Structure Communications
|October 6, 2001
PubMed
Summary

Researchers isolated 6-deoxyjacareubin, a natural compound from Vismia latifolia leaves. Its unique four-ring structure and hydrogen bonding were detailed through crystallographic analysis.

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Area of Science:

  • Natural Product Chemistry
  • Organic Chemistry
  • Crystallography

Background:

  • The Guttiferae family, including Vismia latifolia, is a known source of diverse natural compounds.
  • Xanthone derivatives, such as 6-deoxyjacareubin, often exhibit significant biological activities.
  • Understanding the structural characteristics of natural products is crucial for their potential applications.

Purpose of the Study:

  • To isolate and characterize the natural compound 5,10-dihydroxy-2,2-dimethylpyrano[3,2-b]xanthen-6(2H)-one (6-deoxyjacareubin).
  • To elucidate the molecular structure and crystal packing of 6-deoxyjacareubin.
  • To provide insights into the chemical properties of compounds isolated from Vismia latifolia.

Main Methods:

  • Isolation of the natural compound from the leaves of Vismia latifolia.

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  • Chemical characterization using spectroscopic methods (implied).
  • X-ray crystallography to determine the solid-state structure and hydrogen bonding.

    • Main Results:

    • The natural compound 6-deoxyjacareubin (C(18)H(14)O(5)) was successfully isolated.
    • The molecule possesses a complex structure with four six-membered rings, including planar benzenoid and pyranoid rings, and one distorted pyranoid ring.
    • Crystallographic analysis revealed the presence of one intramolecular and one intermolecular hydrogen bond stabilizing the crystal structure.

    Conclusions:

    • The study successfully isolated and structurally characterized 6-deoxyjacareubin from Vismia latifolia.
    • The detailed structural information, including ring conformations and hydrogen bonding, provides a foundation for further research.
    • This work contributes to the phytochemical knowledge of the Guttiferae family and xanthone derivatives.