Um novo ácido triterpenóide pentacíclico foi isolado a partir de folhas e frutos de Vochysia ferruginea. A estrutura do novo composto foi elucidada por espectroscopia de RMN como sendo o ácido 2α,3β,6β-triidroxiolean-12-en-28-óico (ácido 6β-hidroximaslínico, 1). Além do novo triterpenóide, foram isolados das folhas e frutos o glicosídeo de β-sitosterol e três misturas contendo os triterpenóides conhecidos uvaol e eritrodiol, ácidos ursólico e oleanólico e os ácidos 2α,3β-diidroxiurs-12-en-28-óico e o respectivo isômero oleanólico (ácido maslínico ou cratególico). Nos frutos, a bellericagenina A e o seu éster (28 → 1) β-D-glicopiranosílico (bellericasídeo A) estão presentes em elevados teores.A novel oleane acid was isolated from the leaves and the fruits of Vochysia ferruginea. The structure of the new triterpenoid was elucidated by NMR spectroscopy as 2α,3β,6β-trihydroxyolean-12-en-28-oic acid (6β-hydroxymaslinic acid, 1). In addition, β-sitosterol-glucoside and three mixtures containing known triterpenoids, uvaol and erythrodiol, ursolic and oleanolic acids, 2α,3β-dihydroxyurs-12-en-28-oic acid and its respective oleanolic isomer (maslinic or crategolic acid), were isolated from the leaves and the fruits of Vochysia ferruginea. In the fruits, bellericagenin A and its (28 → 1)β-D-glucopyranosyl ester (bellericaside A) were present in high amount.
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