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.
Graphical Abstract
![](/cms/asset/63e5c64f-3342-455c-8295-4e0f35636f83/gnpl_a_1687478_uf0001_b.jpg)
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Disclosure statement
No potential conflict of interest was reported by the authors.