Nicandra physaloides(Solanaceae) contains four new methyl steroid, relatives (1)–(4), all containing an aromatic ring D; the constituion of the first is demonstrated by crystallographic analysis using direct methods.
M. J. Begley, L. Crombie, P. J. Ham and D. A. Whiting, J. Chem. Soc., Chem. Commun., 1972, 1250 DOI: 10.1039/C39720001250
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