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?-Sistosterol and ?-sitostenone from Eucalyptus deglupta
Author :Khun Nay Win Tun a,b, Nanik Siti Aminah *a, Alfinda Novi Kristanti a, Haninda Iffatuz Zahrah c, Indriani d, Yoishiaki Takaya e and Hnin Thanda Aung f
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ABSTRACT
Research on natural products has been rapidly increasing recently, as isolation and synthetic techniques have progressed, and a wide variety of biological properties have been found. This work is planned to analyze the phytochemical constituents of the stem of Eucalyptus deglupta. Two known compounds, β-sitosterol (K-1) and β-sitostenone (K-2), were isolated from the hexane extract of Eucalyptus deglupta. Two compounds have been identified by extensive techniques of spectroscopy (IR, NMR, and high-resolution MS) and by comparison with the literature data. The two compounds are known and isolated from other plants, but they are recorded for the first time from this plant. In addition, β-sitostenone (K-2) was isolated for the first time in genus Eucalyptus.
KEYWORD
Eucalyptus deglupta, Myrtaceae, spectroscopic techniques, β-sitosterol, β-sitostenone