[Chemical constituents of Ligularia songarica].
Cuvinte cheie
Abstract
OBJECTIVE
To study the chemical constituents of Ligularia songarica.
METHODS
Isolation and purification were carried out on repeated silica gel column chromatography. The compounds structures were identified by physico-chemical properties and spectral analyses.
RESULTS
Ten compounds were isolated and identified as benzofuranoeremophil-2-ene (1), 6-angeloyloxy-1,10-epoxy-euryopsin (2), 2-hydroxyplatyphyllide (3), 1β-hydroxy-6,9-dien-8-oxoeremophy-11-nor-11-ketone (4), 2-isopropenyl-6-acetyl-8-methoxy-13-benzodioxin-4-one (5), 1β-hydroxy-6,9-dien-8-oxo-11-nor-11-hydroxyeremophilane (6), isopetasin (7), 6β,10α-dihydroxy-1-oxoeremophila-7 (11), 8(9)-diene-8,12-olide (8), 10α-hydroxy-1-oxo-eremophila-7 (11), 8(9)-diene-8,12-olide (9) and 6β-angeloyloxy-1β,10β-epoxy-9-oxo-furaneremophilane (10).
CONCLUSIONS
Compounds 2-9 are obtained from this plant for the first time.