Cannabispiran, a spiro-compound with a novel skeletal class was isolated from the leaves of Cannabis sativa L. and X-ray crystallographic studies indicated that the compound was 7′-hydroxy-5′-methoxyspiro-(cyclohexane-1,1′-indan)-4-one (1).
T. Ottersen, A. Aasen, F. S. El-Feraly and C. E. Turner, J. Chem. Soc., Chem. Commun., 1976, 580 DOI: 10.1039/C39760000580
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