[Structure identification of jujuboside D].
Fjalë kyçe
Abstrakt
OBJECTIVE
To study the chemical constituents of Ziziphus jujuba Mill var. Spinosa (Bunge) Hu ex. H. F. Chou.
METHODS
To separate the constituents by using various kinds of chromatography and identify their structures on the basis of spectral analysis.
RESULTS
Five compounds were isolated and their structures were established as jujuboside D (1), jujuboside A (2), 5,7,4'-trihydroxyflavonol-3-O-beta-D-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (3), 6'''-coumaroylspinosin (4) and phenylalanine (5).
CONCLUSIONS
Compound 1 is a new compound named jujuboside D, 4 is reported as rotamer for the first time, 3 and 5 isolated from this plant for the first time.