Steryl esters and phenylethanol esters from Syringa komarowii

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Syringa komarowii is a plant species with potential medicinal properties.
• The chemical constituents of S. komarowii have not been extensively studied.
• Isolation and characterization of novel compounds can lead to new therapeutic discoveries.

Purpose of the Study:

• To isolate and elucidate the structures of new compounds from the aqueous ethanolic extract of Syringa komarowii whole plants.
• To identify known compounds present in the extract.
• To contribute to the phytochemical knowledge of the Syringa genus.

Main Methods:

• Extraction of the whole plant material using aqueous ethanol.
• Chromatographic techniques (e.g., column chromatography) for compound isolation.
• Spectroscopic methods (e.g., NMR, Mass Spectrometry) and chemical evidence for structure elucidation.

Main Results:

• Isolation of three new steryl esters: stigmastane-3beta,6alpha-diol 3-O-tetradecanoate (1), stigmastane-3beta,6alpha-diol 3-O-palmitate (2), and stigmastane-3beta,6alpha-diol 3-O-stearate (3).
• Isolation of one new phenylethanol ester: 2-(4-hydroxyphenyl)-ethyl dotriacontanoate (4).
• Identification of 22 known compounds from the extract.

Conclusions:

• The study successfully identified four novel compounds and 22 known compounds from Syringa komarowii.
• The elucidated structures provide valuable information on the phytochemical profile of S. komarowii.
• These findings may serve as a basis for further pharmacological investigations.