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Indole alkaloids from tabernaemontana bovina

Trinh Phuong Lien,Helmut Ripperger,Andrea Porzel,Kurt Merzweiler,Tran Van Sung,Günter Adam

Cheminform（1998）

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Abstract
In addition to (-)-mehranine, hecubine, ibogaine, ibogaline, 19R-epi voacristine, 20-hydroxyconopharyngine and pedunculine the novel indole alkaloids 3-oxomehranine and 14α,15β-dihydroxy-N-methylaspidospermine have been isolated from the leaves and stems of Tabernaemontana bovina. The structure of 3-oxomehranine has been assigned by NMR investigations, the structure of 14α,15β-dihydroxy-N-methylaspidospermine by X-ray analysis and their absolute configurations by circular dichroism.
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Tabernaemontana bovina,Apocynaceae,indole alkaloids,3-oxomehranine,14α,15β-dihydroxy-N-methylaspidospermine
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