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Nine new triterpenes were isolated from Maytenus amazonica. Their structures were determined by means of 1 H and 13 C NMR spectroscopic studies, including 1 H- 13 C heteronuclear correlation (HETCOR), and long range correlation with inverse detection (HMBC). Some of them showed cytotoxic activity.
Eight new dammarane triterpenes were isolated from Maytenus Macrocarpa. Their structures were determined by means of 1 H and 13 C NMR spectroscopic studies, including 1 H- 13 C heteronuclear correlation (HETCOR), long range correlation with inverse detection (HMBC), and chemical evidence. This is the frist time that dammarane triterpenes have been isolated...
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