Acta Cryst. (2005). E61, o4001-o4003  [ doi:10.1107/S1600536805035609 ]

(S)-(-)-2,3-Methylenedioxy-8-oxoberbine

A. Gzella, M. Chrzanowska and A. Dreas

Abstract: In the title optically active protoberberine derivative, C₁₈H₁₅NO₃, the absolute configuration has been confirmed as 13aS. The H atom at the asymmetric centre assumes an orientation and occupies a bisectional position relative to the tetrahydropyridine ring, and is axial to the tetrahydropyridinone ring.

Online 5 November 2005

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