RT journal article
T1 Isolation and Structural Determination of Triterpenoid Glycosides from the Aerial Parts of Alsike Clover (Trifolium hybridum L.)
A1 J. Pérez, Andy
A1 Kowalczyk, Mariusz
A1 Simonet Morales, Ana María
A1 Macías Domínguez, Francisco Antonio
A1 Oleszek, Wieslaw
A1 Stochmal, Anna
A2 Química Orgánica
K1 alsike clover
K1 Trifolium hybridum L.
K1 triterpenoid saponins
K1 azukisapogenol
K1 structural elucidation
K1 HRESIMS
K1 ESI−MS/MS
K1 NMR
AB Five azukisapogenol glycosides (1−5) have been isolated from the aerial parts of alsike clover (Trifolium hybridumL.), and their structures were elucidated by combined spectroscopic, spectrometric (1D and 2D NMR; HRESIMS, ESI−MS/MS), and chemical methods. Three of them are new compounds and were identified as 3-O-[-α-L-arabinopyranosyl(1→2)]-β-Dglucuronopyranosyl azukisapogenol (1), 3-O-[-β-D-glucuronopyranosyl(1→2)-β-D-glucuronopyranosyl]-29-O-β-D-glucopyranosyl azukisapogenol (2), and 3-O-[-α-L-arabinopyranosyl(1→2)-β-D-glucuronopyranosyl]-29-O-β-D-glucopyranosyl azukisapogenol (3). The remaining two (4, 5) are known compounds but have not been previously described as saponins constituents of the genus Trifolium. Also, azukisapogenol is reported here as a triterpenoid aglycone for the first time in this genus. Finally, the main chemotaxonomic features that may be recognized as specific of Trifolium species were discussed.
PB JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
YR 2013
FD 2013-02
LK http://hdl.handle.net/10498/20269
UL http://hdl.handle.net/10498/20269
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026