Structural studies of chemical constituents of Thithonia Tagetiflora Desv (Asteraceae)

Vinh Ngoc Huynh, Thu Nguyen Thi Hoai, Kim Phi Phung Nguyen, Poul Erik Hansen

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Abstract

Tithonia tagetiflora Desv. (Asteraceae) is a widespread plant in Vietnam, and the species of Tithonia are known as plants containing many biologically active compounds. However, T. tagetiflora's chemical composition remains mostly unknown. Therefore, we now report the structural elucidation of two new sesquiterpene lactones, 8-angeloyloxy-2,14-epoxygermacra-4,10(1),11(13)-trien-6,12-olide (1) and 6-angeloyloxy-1-hydroxy-3,4-epoxygermacra-9,11(13)-dien-8,12-olide (2), together with three known compounds, including two norisoprenoids, (6S,9S)-vomifoliol or (6R,9R)-vomifoliol (3) and (6S,9S)-roseoside (4), and one glutinane type triterpene, epi-glutinol (5), from the leaves of T. tagetiflora. Their structures are established by 1D and 2D NMR spectroscopy, as well as ESI-MS analysis and comparison with literature data
OriginalsprogEngelsk
TidsskriftMagnetic Resonance in Chemistry
Vol/bind51
Udgave nummer7
Sider (fra-til)439-443
Antal sider5
ISSN0749-1581
DOI
StatusUdgivet - 2013

Emneord

  • NMR
  • norisoprenoid
  • sesquiterpene lactone
  • asteraceae

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