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Uso e conservação de Piper cernuum Vell. (Piperaceae) na Mata Atlântica: I. Fenologia reprodutiva e dispersão de sementes
(2003-04-01)
The pariparoba (Piper cernuum Vell.), a native plant from the Atlantic Tropical Forest (ATF), has been commonly used in folk medicine. Works seeking the exploitation of P. cernuum natural populations need to be accomplished, ...
Estrutura e desenvolvimento dos tricomas secretores em folhas de Piper regnellii (Miq.) C. DC. var. regnellii (Piperaceae)
(Sociedade Botânica de São Paulo, 1999-08-01)
Nesta espécie ocorrem dois tipos de tricomas secretores: glândula perolada e tricoma saculiforme. Ambos originam-se na protoderme do primórdio foliar e atingem sua maturidade nas folhas jovens presentes no ápice caulinar. ...
Isoswertisin flavones and other constituents from Peperomia obtusifolia
(TAYLOR & FRANCIS LTD, 2011)
A phytochemical investigation of the leaves and stems of Peperomia obtusifolia (Piperaceae) yielded a new flavone C-diglycoside isoswertisin-4`-methyl-ether-2 ``alpha-L-rhamnoside (1), along with four known compounds: ...
C-glycosyl flavones from Peperomia blanda
(ELSEVIER SCIENCE BV, 2009)
The methanol extract from aerial parts of the Peperomia blanda (Piperaceae) yielded two C-glycosyl-flavones. Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D and 2D NMR, ...
Schistosoma mansoni: In vitro schistosomicidal activity of piplartine
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2011)
Schistosomiasis is one of the world`s greatly neglected tropical diseases, and its control is largely dependent on a single drug, praziquantel. Here, we report the in vitro effect of piplartine, an amide isolated from Piper ...
Study of Salmonella typhimurium mutagenicity assay of (E)-piplartine by the Ames test
(ACADEMIC JOURNALS, 2011)
Phytochemical studies carried out with Piperaceae species have shown great diversity of secondary metabolites among which are several displayed considerable biological activities. The species Piper tuberculatum has been ...
In vitro Trypanocidal Activity of Phenolic Derivatives from Peperomia obtusifolia
(Georg Thieme Verlag Kg, 2009-05-01)
The trypanocidal activity of crude extracts and fractions from the leaves and stems of Peperomia obtusifolia (Piperaceae) was evaluated in vitro against the epimastigote forms of Trypanosoma cruzi. Bioactivity-guided ...
Structure and absolute configuration of a secolignan from Peperomia blanda
(Elsevier B.V., 2011-09-01)
A secolignan, (-)-2-methyl-3-[bis(3 ',4 '-methylenedioxy-5 '-methoxyphenyl) methyl] butyrolactone (1), with a rare cis configuration was isolated from the aerial parts of Peperomia blanda (Piperaceae). The structure of ...
Composition and antifungal activity against Candida albicans, Candida parapsilosis, Candida krusei and Cryptococcus neoformans of essential oils from leaves of Piper and Peperomia species
(Academic Journals, 2010-09-04)
This study was addressed to investigate the composition and antifungal activity of essential oils from leaves of Piperaceae species (Piper aduncum, Piper amalago, Piper cernuum, Piper diospyrifolium, Piper crassinervium, ...
Antifungal amides from Piper arboreum and Piper tuberculatum
(Elsevier B.V., 2002-03-01)
In continuation of our study of the Piperaceae we have isolated several amides, mainly those bearing isobutyl, pyrrolidine, dihydropyridone and piperidine moieties. Bioactivity-guided fractionation of extracts from leaves ...