@article{articlececf6c4d,
title   = {Flavonas, lignanas e terpeno de Piper umbellata (Piperaceae)},
author = {Baldoqui, Debora Cristina and Bolzani, Vanderlan da Silva and Furlan, Maysa and Kato, Massuo Jorge and Marques, Marcia Ortiz Mayo},
year = {2009},
doi = {10.1590/s0100-40422009000500005},
journal   = {Química Nova}
}