The new sesquiterpenoid 15-acetoxypinguisone has been found as the dominant constituent in the CDCl3 extract of a specimen of the liverwort Cryptothallus mirabilis and the structure elucidated using 1H and 13C NMR spectroscopy together with GC–MS and HRMS; a very minor constituent was assigned as (2S,6S)-cyclo-(7S)-cuparan-(3S)-ol, but the major/minor roles were reversed in a second specimen.
D. S. Rycroft and W. John Cole, J. Chem. Res. (S), 1998, 600 DOI: 10.1039/A803615B
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