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Abstract
A new acetylenic sesquiterpenoid, stereyne A (1), and its acetonide derivative, stereyne B (2), were isolated from cultures of the basidiomycete Stereum cf. hirsutum BCC 26597. The structures were elucidated by spectroscopic analysis and a chemical correlation. Their absolute configurations were determined by application of the modified Mosher’s method. They represent new structural type of sesquiterpenoids from Stereum.
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Disclosure statement
No potential conflict of interest was reported by the authors.
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Funding
This study was financially supported by National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA). Identification of the fungus used in this study was supported by National Biobank of Thailand.