In this study, we aimed to evaluate the immunomodulatory effects of crude leaf extracts from
Piper gaudichaudianum Kunth, P. arboreum Aub., P. umbellata L., P. fuligineum Kunth, and …

The phytochemical investigation of Piper umbellata leaves yielded nine compounds
including one terpenoid glucoside, five flavones (vitexin 2"-O-β-glucopyranoside, apigenin 8 …

In Brazilian folk medicine, extracts from Piper species are used to reduce blood pressure.
Previously, we demonstrated the vasodilatory activity of crude extracts from leaves of Piper …

Abstract Nine new lignans (1–8, 13) and five known ones (9–12, 14) have been isolated
from the roots of Schisandra sphenanthera and were tested for their capacity to scavenge 2 …

El género Nectandra pertenece al complejo Ocotea y estas especi es (Nectandra) son por lo
general árboles. Se considera endémica en el Neotrópico. Este género se ha informado de …

Background: Neglected tropical diseases are a group of infections caused by
microorganisms and viruses that affect mainly poor regions of the world. In addition, most …

The study of variability of the tetrahydrofuran lignan (−)-grandisin in leaves of Piper
solmsianum (Piperaceae) revealed two unknown compounds, that were isolated and …

Piper species are basal angiosperms used by men as condiment and medicine since
ancient times, and can be easily found in tropical and subtropical forest of America. This mini …

HPLC-DAD and principal component analysis (PCA) of the 1 H NMR spectrum of crude
plant extracts showed high chemical variability among seedlings and adult organs of Piper …

The lignan (−)-grandisin has shown important pharmacological activities, such as citotoxicity
and antiangiogenic, antibacterial and trypanocidal activities. So, it has been considered as a …