Abstract
A newstemona alkaloid, tuberostemonone (C22H31NO6), has been isolated from the roots ofstemona tuberosa Lour, and its molecular structure determined by MS, IR, NMR spectra and X-ray crystallography (R=0.046 for 1746 observed Mo-Kα data). Besides retaining the characteristicstemona skeleton, which is composed of anα-methyl-γ-lactone and anN-methylene azepine ring linked at the γ-position of this lactone, the tuberostemonone molecule possesses a nine-membered azacycle which is hitherto not found in other knownstemona alkaloids.
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On leave from Central Laboratory, Nankai University, Tianjin, China.
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Lin, W.H., Xu, R.S., Wang, R.J. et al. Molecular structure of tuberostemonone. Journal of Crystallographic and Spectroscopic Research 21, 189–194 (1991). https://doi.org/10.1007/BF01161063
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DOI: https://doi.org/10.1007/BF01161063