Two chromene derivatives from Calyptranthes tricona

Two α-monomethyl chromene derivatives were isolated from the leaf essential oil of Calyptranthes tricona from Brazil which were characterized by 1 H - and 13 C -NMR. Besides these components, which represent about half of the oil, classical terpenoid structures could be identified, among which cis-β...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 2000-04, Vol.53 (8), p.975-979
Main Authors: Menut, C., Bessiere, J.M., Ntalani, H., Verin, P., Henriques, A.T., Limberger, R.
Format: Article
Language:English
Subjects:
5,7-dimethoxy-2,8-dimethyl-2H-benzopyran
5,7-dimethoxy-2-methyl-2H-benzopyran
Benzopyrans - chemistry
Benzopyrans - isolation & purification
Biological and medical sciences
Calyptranthes tricona
Chemical constitution
Fundamental and applied biological sciences. Psychology
Gas Chromatography-Mass Spectrometry
Magnetic Resonance Spectroscopy
Magnoliopsida - chemistry
Magnoliopsida - classification
Myrtaceae
Oils, Volatile - chemistry
Plant Leaves - chemistry
Plant physiology and development
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Summary:Two α-monomethyl chromene derivatives were isolated from the leaf essential oil of Calyptranthes tricona from Brazil which were characterized by 1 H - and 13 C -NMR. Besides these components, which represent about half of the oil, classical terpenoid structures could be identified, among which cis-β-farnesene is the most abundant (26.6%). A biosynthetic pathway could be proposed to explain the formation of the chromene derivatives in the plant.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(99)00601-9