Four new spiroaxane sesquiterpenes and one new rosenonolactone derivative from cultures of Basidiomycete Trametes versicolor

Four new spiroaxane sesquiterpenes, tramspiroins A–D (1–4), one new rosenonolactone 15,16-acetonide (5), and the known drimane sesquiterpenes isodrimenediol (6) and funatrol D (7) have been isolated from the cultures of Basidiomycete Trametes versicolor. The structures of new compounds were elucidated by means of spectroscopic methods. Compounds 1–7 were investigated for their cytotoxicities against five human cancer cell lines.

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