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ThePoranthera corymbosa alkaloids, I. Crystal and absolute molecular structure of porantherine hydrobromide

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Abstract

The alkaloid porantherine, C15H23N, has been isolated fromPoranthera corymbosa Brogn. (family Euphorbiaceae). It forms a stable hydrobromide which crystallizes in the orthorhombic space groupP212121, with cell dimensionsa=11·689,b = 15·190 andc = 7·721 Å. Its structure has been solved by the heavy-atom method and refined to anR of 0·063. The molecular skeleton has the form of a tertiary amine, with three fused six-membered rings centred on the nitrogen atom and a two-carbon atom bridge which holds the whole molecule rigid. The absolute configuration has been determined from the differences between Bijvoet pairs of reflexions.

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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

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  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, I. Crystal and absolute molecular structure of porantherine hydrobromide. Journal of Crystal and Molecular Structure 3, 79–86 (1973). https://doi.org/10.1007/BF01237430

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  • DOI: https://doi.org/10.1007/BF01237430

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