New dipyranocoumarin from the leaves of Calophyllum apetalum Willd

A new dipyranocoumarin, α-hydroxytomentolide A (1) was isolated from the leaves of Calophyllum apetalum together with the known compounds friedelin (2), apetalactone (3), inophyllum C (4) and canophyllol (5). The structure of the new compound was established by spectroscopic studies which include 1...

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Bibliographic Details
Published in:Natural product research 2013-10, Vol.27 (20), p.1896-1901
Main Authors: Joshi, Swati P., Kulkarni, Smita R., Phalgune, Usha D., Puranik, Vedavati G.
Format: Article
Language:English
Subjects:
Calophyllum - chemistry
Calophyllum apetalum
Coumarins - chemistry
Coumarins - isolation & purification
dipyranocoumarins
Guttiferae
Magnetic Resonance Spectroscopy
Molecular Structure
Plant Extracts - analysis
Plant Leaves - chemistry
triterpenoids
X-Ray Diffraction
α-hydroxytomentolide A
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Summary:A new dipyranocoumarin, α-hydroxytomentolide A (1) was isolated from the leaves of Calophyllum apetalum together with the known compounds friedelin (2), apetalactone (3), inophyllum C (4) and canophyllol (5). The structure of the new compound was established by spectroscopic studies which include 1 H NMR, 13 C NMR, NOESY, HetCOSY, COLOC experiments and single crystal X-ray diffraction analysis.
ISSN:1478-6419
1478-6427
DOI:10.1080/14786419.2013.784869