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Three new phenylpropanoids, 3-(6-methoxy-3-oxo-1, 3-dihydroisobenzofuran-5-yl)-3-oxopropyl acetate (1), 3-hydroxy-1-(6-methoxy-1, 3-dihydroisobenzofuran-5-yl)propan-1-one (2), and 3-hydroxy-1-(6- methyl-1, 3-dihydroisobenzofuran-5-yl)propan-1-one (3), together with three known phenylpropanoids (4–6) were isolated from the stems of Nicotiana tabacum. Their structures were examined using different spectroscopic...
For more bioactive compounds, phytochemical investigations of the acetone extract of the stems of Garcinia oligantha resulted in the isolation of three new xanthones (1–3) and five known analogues (4–8). Structural elucidations of 1–3 were performed by spectral methods such as 1D and 2D (HMQC, HMBC, and ROESY) NMR spectroscopy, in addition to high resolution mass spectrometry. Compounds 1, 2, 6, 7,...
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