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ThePoranthera corymbosa alkaloids, II. Molecular structure and absolute configuration of porantheridine hydrobromide

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Abstract

Crystals of the hydrobromide of the alkaloid designated porantheridine, C15H27NO, isolated from the plantPoranthera corymbosa Brogn. (family Euphorbiacaea), belong to the space groupP212121, with cell dimensionsa= 10·059,b = 16·704 andc = 9·629 Å. The crystal structure was solved by the heavy-atom method and refined with 624 reflexions to a residual of 0·078. The molecule consists of three six-membered rings fused on to a common central nitrogen atom; one ring contains an oxygen atom with ann-propyl group and a methyl group substituted on the vicinal carbon atoms. The rings have thechair conformation, two being fusedtrans to each other andcis to the third. The absolute configuration was determined using the anomalous scattering power of the bromine atom.

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Authors and Affiliations

  1. Division of Chemical Physics, CSIRO, P.O. Box 160, 3168, Clayton, Victoria, Australia

    W. A. Denne & A. McL Mathieson

Authors
  1. W. A. Denne
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  2. A. McL Mathieson
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Denne, W.A., Mathieson, A.M. ThePoranthera corymbosa alkaloids, II. Molecular structure and absolute configuration of porantheridine hydrobromide. Journal of Crystal and Molecular Structure 3, 87–93 (1973). https://doi.org/10.1007/BF01237431

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  • DOI: https://doi.org/10.1007/BF01237431

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