Dos frutos dePterodon polygalaeflorus (Leguminosae) foram isolados o novo diterpeno 6α-hidroxivouacapano e os conhecidos diterpenóides 6α,7β,14β,19-tetraidroxivouacapano, 6α,7β-diidroxivouacapan-17β-oato de metila e o flavonóide taxifolina. As estruturas foram determinadas com base em análise espectroscópica, inclusive RMN bidimensional, transformação química do novo diterpeno e comparação com dados da literatura.From fruits of Pterodon polygalaeflorus (Leguminosae) the new diterpene 6a-hydroxyvouacapane, the known diterpenoids vouacapane-6α,7β,14β,19-tetraol and methyl 6α,7β-dihydroxyvouacapan-17β-oate and the flavonoid taxifolin were isolated. Structural determinations were accomplished by spectroscopic analysis, including two-dimensional NMR, chemical transformation of the new diterpene and comparison with literature data.