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. 2001 May;57(Pt 5):651-2.
doi: 10.1107/s0108270101003249. Epub 2001 May 15.

Protopine hydrochloride

J Dostál  1 , Z Zák, M Necas, J Slavík, M Potácek
Affiliations

Protopine hydrochloride

J Dostál et al. Acta Crystallogr C. 2001 May.

Abstract

Protopine hydrochloride (5,6,14,14a-tetrahydro-14a-hydroxy-7-methyl-8H-bis[1,3]benzodioxolo[5,6-a:4,5-g]quinolizinium chloride, C20H20NO5(+)-Cl(-)) is the salt of the isoquinoline alkaloid protopine. It is formed by the action of dilute hydrochloric acid on the protopine free base. The N-methyl and hydroxyl groups are in a trans configuration in the quinolizine ring and the central quinolizine N-C bond is unusually long [1.579 (2) A]. The crystal is a racemate.

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