ABSTRACT
Os flavonóides 5,3,4-triidroxi-7-metoxiflavona, 5,3-diidroxi-7-4-dimetoxiflavona, 5,4-diidroxi-7-metoxiflavona e uma mistura de esteróides (β-sitosterol e estigmasterol) foram isoladas das partes aιreas de Piper carniconnectivumC.DC, Piperaceae. As estruturas desses compostos foram estabelecidas por análises espectroscópicas de UV, IV e RMN de ¹H e 13C, incluindo técnicas uni e bidimensionais.
The flavonoids 5,3,4-trihydroxy-7-methoxyflavone, 5,3-dihydroxy-7-4-dimethoxyflavone, 5,4-dihydroxy-7-methoxyflavone and steroids mixture (β-sitosterol and stigmasterol) were isolated from the dried aerials parts of Piper carniconnectivumC.DC. Their structures were established by spectroscopic analyses (UV, IV and ¹H, 13C NMR, including 1D and 2D NMR).