Xeractinol: a new flavanonol C-glucoside from Paepalanthus argenteus var. argenteus (Bongard) Hensold (Eriocaulaceae)

Journal of the Brazilian Chemical Society

Lavarda, Francisco¹  Universidade Estadual Paulista, Bauru, Brazil¹  Vilegas, Wagner¹  Dokkedal, Anne Lígia¹  Santos, Lourdes Campaner dos¹  Universidade Estadual Paulista, Araraquara, Brazil¹ 

关键词: Paepalanthus argenteus var. argenteus;    Eriocaulaceae;    dihydroflavonol;    xeractinol;    ab initio calculations;   

DOI  :  10.1590/S0103-50532007000200029

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

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.

【 授权许可】

Unknown