Results 121 to 130 of about 272 (148)

Antifungal amides from Piper arboreum and Piper tuberculatum

Phytochemistry, 2002
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 of Piper arboreum yielded two new amides, N-[10-(13,14-methylenedioxyphenyl)-7(E),9(Z)-pentadienoyl]-pyrrolidine (1), arboreumine (2)
da Silva, R. V., Navickiene, HMD, Kato, M. J., Bolzani, Vanderlan da Silva, Meda, C. I., Young, MCM, Furlan, Maysa   +6 more
openaire   +3 more sources

Amides from Piper tuberculatum fruits

Fìtoterapìâ, 2003
The fruits of Piper tuberculatum Jacq yielded piperine S (1) and N-(12,13,14-trimethoxydihydrocinnamoyl)-delta(3)-piperidin-2-one (2). Their complete NMR analysis based on one- and two-dimensional experiments is reported.
M C, de O Chaves, A G, de F Júnior, B V, de O Santos   +2 more
exaly   +3 more sources

Two amides from Piper tuberculatum fruits

Fìtoterapìâ, 2001
The fruits of Piper tuberculatum yielded pellitorine, N-isobutyl-2E,4E-decadienamide (1), and piperidide-2E,4E-decadienamide (2). Their complete NMR analysis, based on one- and two-dimensional experiments, is reported.
E V, Leitão da-Cunha, M C, de Oliveira Chaves   +1 more
exaly   +3 more sources

Piplartine-dimer A, a new alkaloid from Piper tuberculatum

Phytochemistry, 1981
Piplartine-dimer A (1), a dimer of the known pyridone alkaloid piplartine, was isolated from root bark of Piper tuberculatum. It is accompanied by piplartine (3) and 3,4,5-trimethoxycinnamic acid.
Raimundo Braz-Filho
exaly   +2 more sources

Piperdardine, a piperidine alkaloid from Piper tuberculatum

Phytochemistry, 1997
Abstract A new piperidine alkaloid 1-[7-(1,3-benzodioxol-5-yl)-1-oxo-2, 4-heptadienyl]piperidine, piperdardine, was isolated from hexane and chloroform extracts of Piper tuberculatum var. tuberculatum. A combination of 1D and 2D NMR, together with other spectroscopic methods, led to the unambiguous assignments of all protons and carbons of the ...
João Xavier De Araujo-Junior, Emidio V.L. Da-Cunha, Maria Célia De O. Chaves, Alexander I. Gray   +3 more
openaire   +1 more source

ChemInform Abstract: Antifungal Amides from Piper hispidum and Piper tuberculatum.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Hosana Maria D. Navickiene, Alberto Camilo Alecio, Massuo Jorge Kato, Vanderlan da S. Bolzani, Maria Claudia M. Young, Alberto Jose Cavalheiro, Maysa Furlan   +6 more
openaire   +1 more source

Antinociceptive Effect of Crude Extract, Fractions and Three Alkaloids Obtained from Fruits of Piper tuberculatum

Biological and Pharmaceutical Bulletin, 2009
This study investigated the possible antinociceptive effect of the crude extract, fractions and pure compounds (three alkaloids) obtained from fruits of Piper tuberculatum JACQ. (Piperaceae) in acetic acid-induced visceral pain in mice. Oral administration of crude extract and fractions (CH(2)Cl(2), EtOAc, methanol and hexane) (3-300 mg kg(-1)) caused ...
Debora Lanznaster, Valdir Alves Facundo, Adair R S Santos   +2 more
exaly   +4 more sources

Essential Oil ofPiper tuberculatumvar.tuberculatum(Micq.) CDC Leaves

Journal of Essential Oil Research, 2005
Abstract The essential oil obtained by steam distillation of the leaves of Piper tuberculatum var. tuberculatum was analyzed using GC/MS. The major components found in the oil were β-caryophyllene (26.3%) and α-cadinol (13.7%).
Valdir Alves Facundo, Selene Maia de Morais   +1 more
openaire   +1 more source

ChemInform Abstract: Piperdardine, a Piperidine Alkaloid from Piper tuberculatum.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. X. DE ARAUJO‐JUNIOR, E. V. L. DA‐CUNHA, M. C. DE O. CHAVES, A. I. GRAY   +3 more
openaire   +1 more source

Evaluation of the genotoxicity of piplartine, an alkamide of Piper tuberculatum, in yeast and mammalian V79 cells

Mutation Research/Genetic Toxicology and Environmental Mutagenesis, 2008
The genus Piper belongs to the Piperaceae family, and includes species of commercial and medicinal importance. Chemical studies on Piper species resulted in the isolation of several biologically active molecules, including alkaloid amides, such as piplartine.
Daniel Pereira, Bezerra, Dinara Jaqueline, Moura, Renato Moreira, Rosa, Marne Carvalho, de Vasconcellos, Ana Catarina Romano, e Silva, Manoel Odorico, de Moraes, Edilberto Rocha, Silveira, Mary Anne Sousa, Lima, João Antonio Pegas, Henriques, Letícia Veras, Costa-Lotufo, Jenifer, Saffi   +10 more
openaire   +2 more sources