Dimeric xanthones from Garcinia livingstonei

From the root bark of Garcinia livingstonei, three xanthone dimers have been isolated. Structure elucidation was achieved mainly by NMR and mass spectrometry, including extensive NOE difference measurements, and by comparison with monomeric prenylated xanthones previously isolated from the same plan...

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Bibliographic Details
Published inPhytochemistry (Oxford) Vol. 31; no. 10; pp. 3589 - 3593
Main Authors Sordat-Diserens, Isabelle, Hamburger, Matthias, Rogers, Colin, Hostettmannt, Kurt
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 01.10.1992
Elsevier
Subjects
Biochemistry & Molecular Biology
Biological and medical sciences
Chemical constitution
Diels-Alder adducts
Fundamental and applied biological sciences. Psychology
garcilivin A-C
Garcinia livingstonei
Guttiferae
Life Sciences & Biomedicine
Plant physiology and development
Plant Sciences
Science & Technology
xanthones
Garcinia livingstonei
xanthones
Guttiferae
garcilivin A-C
Diels-Alder adducts
MONOAMINE-OXIDASE
GARCINIA-LIVINGSTONEI
SELECTIVE INHIBITORS
GARCILIVIN AC
DIELS-ALDER ADDUCTS
XANTHONES
GUTTIFERAE
Xanthone
Root
Molecular structure
Dicotyledones
Angiospermae
Bark
Isolation
Spermatophyta
Dimer
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Summary:From the root bark of Garcinia livingstonei, three xanthone dimers have been isolated. Structure elucidation was achieved mainly by NMR and mass spectrometry, including extensive NOE difference measurements, and by comparison with monomeric prenylated xanthones previously isolated from the same plant. Garcilivin A–C are structurally related to 1,4,5-trihydroxy-3-(3-methylbut-2-enyl)-9 H-xanthen-9-one and formally derive from the corresponding diene via dimerization by a Diels-Alder-type reaction.
ISSN:0031-9422
1873-3700
DOI:10.1016/0031-9422(92)83732-E