A novel triterpenoid saponin 3-O-β-D-glucuronopyranosyl-(1→3)-2α,19α-dihydroxyolean-12-en-28-oic acid [3-O-β-D-glucuronopyranosyl-(1′→3)-arjunic acid, 1], ten known compounds [six triterpenoids: α-amyrin (2), β-amyrin (3), germanicol (4), lupeol (5), friedelin (6), friedelanol (7); four steroids -campesterol (8), stigmasterol (9), sitosterol (10), cholesterol (11)], and a long chain alcohol n-eicosan-1-ol (12) were identified in the bark of Lecythis pisonis. The structures were established by 1D and 2D NMR spectroscopy (1H and 13C-NMR, DEPTQ, 1H-1H-COSY, NOESY, HSQC and HMBC), low (CG-MS) and high resolution mass spectrometry (HR-ESI-MS), and infrared (IR) spectral data involving comparison with the literature.
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FerreiraELF, MascarenhasTS, OliveiraJPC, ChavesMH, AraújoBQ, CavalheiroAJ. (2014) Phytochemical investigation and antioxidant activity of extracts of Lecythis pisonis Camb. Journal of Medicinal Plants Research, 8, 353–360.
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