[Chemical constituents of Ligularia dictyoneura].
Cuvinte cheie
Abstract
OBJECTIVE
To study the chemical constituents of Ligularia dictyoneura.
METHODS
Various chromatographic techniques were used to separate and purify the compounds. Their spectral data (MS, IR, NMR) were measured for structure elucidation.
RESULTS
Four sesquiterpenes were isolated from Ligularia dictyoneura and their structures were identified as ligudicin A (1), ligudicin C (2), ligudicin D (3) and isopetasin (4).
CONCLUSIONS
Compound 1 is a new compound, compound 2 is a new natural product, and compounds 3 and 4 are obtained from Ligularia dictyoneura for the first time.