Artigo
Xeractinol - A new flavanonol C-glucoside from Paepalanthus argenteus var. argenteus (Bongard) Hensold (Eriocaulaceae)
Fecha
2007-01-01Registro en:
Journal of the Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 18, n. 2, p. 437-439, 2007.
0103-5053
10.1590/S0103-50532007000200029
S0103-50532007000200029
WOS:000246443800028
2-s2.0-34247512970
WOS000246443800028.pdf
7927877224326837
0000-0003-3032-2556
Autor
Universidade Estadual Paulista (Unesp)
Resumen
New compound isolated from methanolic extract from the leaves of Paepalanthus argenteus var. argenteus (Bongard) Hensold was characterized as xeractinol, a new dihydroflavonol C-glucoside. The structure was elucidated on the basis of extensive spectroscopic analysis (1D and 2D NMR, MS, HREIMS, IR and UV). Ab initio electronic structure calculations support our proposal to the molecular structure. The dihydroflavonol herein isolated may serve as taxonomic marker of Paepalanthus subgenus Xeractis, because this flavonoid have not been reported in any other taxon of Eriocaulaceae.