Advertisement

Journal of Chemical Crystallography

, Volume 40, Issue 2, pp 110–115 | Cite as

Absolute Configuration of Two Eudesmane Derivatives from Verbesina turbacensis H.B.K.

  • Julia Bruno-Colmenárez
  • Juan M. Amaro-Luis
  • Irama Ramírez
  • Paulino Delgado-Méndez
  • Graciela Díaz de Delgado
ORIGINAL PAPER

Abstract

Two compounds isolated from the aerial parts of Verbesina turbacensis H.B.K, are reported in this work. Both compounds crystallize in the orthorhombic system, space group P212121. Compound (1), 6β-[cinnamoyloxy]-3β,4α-dihydroxyeudesmane, formula C24H34O4, has unit cell parameters a = 9.6234(2), b = 12.3137(3) and c = 18.6277(5) Å, V = 2207.38(9) Å3, Z = 4. On the other hand, 6β-[cinnamoyloxy]-eudesman-15-oic acid (2), formula C24H32O4, has cell parameters a = 8.7035(3), b = 14.2020(4), c = 17.1590(5) Å, V = 2120.97(11) Å3, Z = 4.

Graphical Abstract

Extensive and interesting hydrogen bond patterns are present in the structure of two eudesmane derivatives from Verbesina Turbasencis H.B.K.

Keywords

Verbesina derivatives Eudesmane Sesquiterpenes Crystal structure 

Notes

Acknowledgments

The authors would like to thank Dr. Maren Pink of Indiana University for data collection. We also thank CDCHT-ULA and the support of FONACIT through grant LAB-97000821 for Laboratorio Nacional de Difracción de Rayos-X (LNDRX).

References

  1. 1.
    Amaro-Luis J, Ramírez I, Delgado-Mendez P, Zacarias J (2002) J Braz Chem Soc 13:352–357CrossRefGoogle Scholar
  2. 2.
    Allen FH (2002) Acta Crystallogr B 58:380–388CrossRefGoogle Scholar
  3. 3.
    Murillo R, Briceño A, Mora A, Delgado G (2007) Acta Crystallogr E 63:o2951CrossRefGoogle Scholar
  4. 4.
    Bruker-AXS (1999) SMART Bruker-AXS Inc., Madison, Wisconsin, USAGoogle Scholar
  5. 5.
    Bruker-AXS (1999) SAINT Bruker-AXS Inc., Madison, Wisconsin, USAGoogle Scholar
  6. 6.
    Sheldrick GM (2008) Acta Crystallogr A 64:112–122CrossRefGoogle Scholar
  7. 7.
    Flack HD (1983) Acta Crystallogr A 39:876–881CrossRefGoogle Scholar
  8. 8.
    Spek AL (2003) J Appl Crystallogr 36:7–13CrossRefGoogle Scholar
  9. 9.
    Brandenburg K (2004) DIAMOND Release 3.0a. Crystal Impact GbR. Bonn, GermanyGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Julia Bruno-Colmenárez
    • 1
  • Juan M. Amaro-Luis
    • 2
  • Irama Ramírez
    • 2
  • Paulino Delgado-Méndez
    • 2
  • Graciela Díaz de Delgado
    • 1
  1. 1.Laboratorio de Cristalografía-LNDRX, Departamento de Química, Facultad de CienciasUniversidad de Los AndesMéridaVenezuela
  2. 2.Laboratorio de Productos Naturales, Departamento de Química, Facultad de CienciasUniversidad de Los AndesMéridaVenezuela

Personalised recommendations