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Abstract
A new compound, chandonanol (1), along with four known compounds, chandonanthone (2), iso-chandonanthone (3), anastreptene (4), and (6R,7S)-sesquiphellandrene (5), was isolated from the MeOH extract of Bornean liverwort Chandonanthus hirtellus. The structure of the new metabolite was established by analyses of the spectroscopic data (1D NMR, 2D NMR, HRESIMS, and IR). These compounds were tested for their activity against antibiotic-resistant clinical strains. Chandonanol (1) exhibited potent bactericidal activity against Staphylococcus aureus and Escherichia coli.
Acknowledgments
We are grateful to the Sabah Parks for the support and assistance during field survey. The authors would also like to acknowledge Assoc. Prof. Dr Tatsufumi Okino for the HRMS measurements.
Disclosure statement
No potential conflict of interest was reported by the authors.