Seven new monoterpenoid indole alkaloids from Gelsemium elegans

Seven new indole alkaloids were isolated from the roots of Gelsemium elegans Benth. and their structures were determined by spectroscopic analysis and chemical transformation from known alkaloids. Kounaminal (1) is a new koumine-type alkaloid that contains an unusual aminal moiety. Humantenoxenine (...

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Published inChemistry, an Asian journal Vol. 6; no. 1; p. 166
Main Authors Yamada, Yousuke, Kitajima, Mariko, Kogure, Noriyuki, Wongseripipatana, Sumphan, Takayama, Hiromitsu
Format Journal Article
LanguageEnglish
Published Germany 03.01.2011
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Abstract Seven new indole alkaloids were isolated from the roots of Gelsemium elegans Benth. and their structures were determined by spectroscopic analysis and chemical transformation from known alkaloids. Kounaminal (1) is a new koumine-type alkaloid that contains an unusual aminal moiety. Humantenoxenine (2) and 15-hydroxyhumantenoxenine (3) are humantenine-type alkaloids that contain a novel β-amino-α,β-unsaturated ketone residue. The other four novel alkaloids are two gelsedilam-related and two gelsenicine-related alkaloids.
AbstractList Seven new indole alkaloids were isolated from the roots of Gelsemium elegans Benth. and their structures were determined by spectroscopic analysis and chemical transformation from known alkaloids. Kounaminal (1) is a new koumine-type alkaloid that contains an unusual aminal moiety. Humantenoxenine (2) and 15-hydroxyhumantenoxenine (3) are humantenine-type alkaloids that contain a novel β-amino-α,β-unsaturated ketone residue. The other four novel alkaloids are two gelsedilam-related and two gelsenicine-related alkaloids.
Author Kitajima, Mariko
Kogure, Noriyuki
Takayama, Hiromitsu
Yamada, Yousuke
Wongseripipatana, Sumphan
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Snippet Seven new indole alkaloids were isolated from the roots of Gelsemium elegans Benth. and their structures were determined by spectroscopic analysis and chemical...
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StartPage 166
SubjectTerms Gelsemium - chemistry
Magnetic Resonance Spectroscopy
Molecular Structure
Plant Roots - chemistry
Secologanin Tryptamine Alkaloids - chemistry
Secologanin Tryptamine Alkaloids - classification
Title Seven new monoterpenoid indole alkaloids from Gelsemium elegans
URI https://www.ncbi.nlm.nih.gov/pubmed/20960496
Volume 6
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