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Phytochemical study of the trunk bark of Citharexylum spinosum L. growing in Tunisia: Isolation and structure elucidation of iridoid glycosides

Authors
  • Saidi, Ilyes
  • Waffo-Téguo, Pierre
  • Ayeb-Zakhama, Asma E. L.
  • Harzallah-Skhiri, Fethia
  • Marchal, Axel
  • Ben Jannet, Hichem
Publication Date
Jan 01, 2018
Identifiers
DOI: 10.1016/j.phytochem.2017.11.012
PMID: 29223063
OAI: oai:HAL:hal-02626223v1
Source
HAL-Descartes
Keywords
Language
English
License
Unknown
External links

Abstract

A phytochemical investigation of the trunk bark ethyl acetate extract of Citharexylum spinosum L. has led to the isolation of four previously undescribed iridoid glycosides, tunispinosides A-D, and five known phenylethanoid glycosides, verbascoside, leucosceptoside A, martynoside, isoverbascoside and plantainoside C, together with 4-hydroxy-2,6-dimethoxyphenyl 6'-O-vanilloyl-beta-D-glucopyranoside, two 8,3'-neolignan glycosides, plucheosides D-1-D-2, coniferyl aldehyde, vanillic acid, syringic acid, ferulic acid and tyrosol. All compounds were isolated for the first time from C. spinosum. Their isolation was carried out using silica gel column and high performance liquid chromatography (HPLC). Structures were established by spectroscopic means including 1D and 2D NMR experiments, and spectrometric ESI-HRMS analysis.

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