On the structure of the dioncophyllaceae alkaloids dioncophylline A (cas 60142-17-8) (“triphyophylline”) and “O-Methyl-Triphyophylline”

Add time:07/17/2019    Source:sciencedirect.com

The naphthyl isoquinoline alkaloid “triphyophylline” is structurally re-investigated. The constitution, as well as the relative configurations at C-1 and C-3, are confirmed as published previously. “Triphyophylline” is found to be a stable rotational isomer with respect to the biaryl linkage, the absolute configuration at the stereogenic axis is determined to be S. The data of the natural product “O-methyl-triphyophylline”, as reported in the literature, are shown not to be identical with those of the O-methylation product of triphyophylline, as prepared by partial synthesis. This inconsistency within the published series of Dioncophyllaceae alkaloids necessitates to rename “triphyophylline” (new name: “dioncophylline A (cas 60142-17-8)”).

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