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Navegando IQ - Artigos publicados em periódicos por Autor "Albuquerque, Sérgio de"
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Item Isolation and structural characterization of two new furanoditerpenes from Pterodon emarginatus (Fabaceae)(2017) Oliveira, Leandra de Almeida Ribeiro; Oliveira, Gerlon de Almeida Ribeiro; Lemes, Geralda de Fátima; Romão, Wanderson; Vaz, Boniek Gontijo; Albuquerque, Sérgio de; Rotta, Cristiana Gonçalez; Liao, Luciano Morais; Bara, Maria Teresa FreitasA furanoditerpene-enriched fraction was obtained from the fruits of Pterodon emarginatus and submitted to semipreparative high performance liquid chromatography (HPLC). Two new furanoditerpenes, 6α,19β-diacetoxy-7β,14β-dihydroxyvouacapan and 6α-acetoxy7β,14β-dihydroxyvouacapan, in addition to the known compound methyl 6α-acetoxy7β-hydroxyvouacapan-17β-oate were obtained. Compound structures were determined by 1D and 2D nuclear magnetic resonance (NMR) experiments and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FTICR-MS). The major compound methyl 6α-acetoxy-7β-hydroxyvouacapan-17β-oate was evaluated against promastigote forms of Leishmania amazonensis and L. braziliensis, presenting the concentration which causes lysis on 50% of parasites IC50 < 30 µg mL-1.