Chemistry Letters p. 1239 - 1242 (1990)
Update date:2022-08-02
Topics:
Takano, Seiichi
Samizu, Kiyohiro
Ogasawara, Kunio
Thermolysis of the aziridine ester, obtained from (S)-O-benzylglycidol, afforded the pyrrolidine lactone bearing a quaternary carbon center stereo-specifically in a good yield via intramolecular cycloaddition of the 1,3-dipole.The adduct (11) could be converted into natural (-)-mesembrine, the major alkaloid of Sceletium namaquense, and its N-demethyl derivative via a 8 step sequence of reactions.
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