Lignans from Gliricidia sepium

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Abstract
The air-dried leaves of Gliricidia sepium afforded two lignans: pinoresinol and lariciresinol by silica gel chromatography. The structures of the compounds were elucidated by 1D and 2D NMR spectroscopy and mass spectrometry. They were found to exhibit low antimicrobial activity against B. subtilis and P. aeruginosa and antigungal activity against T. mentagrophytes and A. niger.
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    Full-text available
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  • Article
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  • Article
    Chemical investigation of Cycas vespertilio male cone led to the isolation of pinoresinol (1), lariciresinol (2), mixtures of α-amyrin acetate (3a) and lupeol acetate (3b) in a 2.5:1 ratio and β-sitosterol (4a) and stigmasterol (4b) in a 2:1 ratio, triglycerides (5), and fatty alcohols (6). The structures of 1 and 2 were elucidated by extensive 1D and 2D NMR spectroscopy, while those of 3a-6 were identified by comparison of their 1H and/or 13C NMR spectra with those reported in the literature.
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