A partir de Aspidosperma illustre, foi obtido como produto natural um novo triterpeno da série oleanano, o olean-12-en-11a-metóxi-3β-acetato (10), além dos triterpenos β-amyrina (3), lupeol (4), acetato de β-amyrina (5), acetato de lupeol (6), olean-12-en-28-hidróxi-3β-tetradecanoato (7), olean-12-en-28-carboxi-3β-hexadecanoato (8), ácido ursólico (9) e dois alcalóides indólicos monoterpênicos, β-ioimbina (1) e 1,2-desidroaspidospermidina (2). As substâncias isoladas foram identificadas através de métodos espectroscópicos, principalmente uni (RMN 1 H, 13 C, APT) e bidimensionais (
Cymosanine (1) and three further known quassinoids, cedronin (2), chaparrinone (3), and simarolide (4), were isolated from the root bark of Simaba subcymosa. The structures were established by spectroscopic data, mainly 1D, 2D NMR and mass spectra.
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