Novel cadinane-related sesquiterpenes from Nectandra amazonum

•Two novel cadinane-type sesquiterpenes were isolated from Nectandra amazonum (Lauraceae).•The structures were assigned by NMR and MS spectroscopic techniques and DFT molecular modeling.•Identified sesquiterpenes are important for chemotaxonomy in Nectandra. Two novel cadinane-type sesquiterpenes (1...

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Bibliographic Details
Published in:Phytochemistry letters 2013-08, Vol.6 (3), p.435-438
Main Authors: Cuca, Luis E., Ramos, Carlos A., Coy-Barrera, Ericsson D.
Format: Article
Language:English
Subjects:
chemical structure
gas chromatography-mass spectrometry
Lauraceae
leaves
molecular models
Nectandra
Nectandra amazonum
nuclear magnetic resonance spectroscopy
Sesquiterpene
sesquiterpenoids
Sterol
sterols
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Summary:•Two novel cadinane-type sesquiterpenes were isolated from Nectandra amazonum (Lauraceae).•The structures were assigned by NMR and MS spectroscopic techniques and DFT molecular modeling.•Identified sesquiterpenes are important for chemotaxonomy in Nectandra. Two novel cadinane-type sesquiterpenes (1–2) were isolated from n-hexane-soluble sub-extract from leaves of Nectandra amazonum NEES. (Lauraceae) along with two known stigmastane-related sterols, which were structurally characterized by spectroscopic techniques (NMR, MS) and DFT molecular modeling. Additionally, from the less polar fraction, four known cadinane-type sesquiterpenoids were also identified by GC/MS analyses.
ISSN:1874-3900
1876-7486
DOI:10.1016/j.phytol.2013.05.010