Poster presentation
176
STRUCTURAL ELUCIDATION OF TRITERPENE GLYCOSIDE
FROM THE ROOTS OF Allochrusa gypsophiloides
R.Z. Mamadalieva, V.U. Khujaev
Kokand State Pedagogical Institute, Kokand 713000, Turon str. 23, Uzbekistan
e-mail: rmamadalieva@yahoo.com
Allochrusa
is a genus in the
Caryophyllaceae
family
, which previously was included
in the genus
Acanthophyllum
.
Allochrusa gypsophiloides
(Regel) Schischk. is the best
known endemic saponin-bearing plant of Central Asia. This species has been known as
a valuable source of saponins in Uzbekistan and Kazakhstan and has been exported for a
long time.
Allochrusa
are a rich source of triterpene glycosides with diverse chemical
structures and physiological activities.
A. gypsophiloides
is represented natural resource of the metabolites, especially
triterpene saponins and polysaccharides. Although, there are some reports about
bisdesmoside glycosides (acanthophyllosides B, C, and D) in this plant, chemical
investigations have not completed on
A. gypsophiloides
yet. Therefore, the study of root
material led to the isolation of one triterpene glycosides not described previously in this
plant. The structural elucidation of this triterpenoid saponin was based on mass-, NMR
spectroscopic techniques.
The roots of
A. gypsophiloides
were grounded and powdered afterward. The saponins
were extracted using ultrasonic bath with MeOH (80%) at room temperature. The
extract was then filtered and evaporated. The dried methanol extract was subjected to
Diaion HP20 column chromatography, and the extract was eluted by H
2
O/MeOH
gradients with increasing polarity to 100% MeOH. Triterpene glycosides-containing
subfractions was chromatographed and compound
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