Results 121 to 130 of about 331 (144)

Casabitoa perfae (Euphorbiaceae)-A New Synonym of Picramnia Dictyoneura (Simaroubaceae)

Brittonia, 1994
Casabitoa perfae Alain (Euphorbiaceae) was rediscovered in Alto de Casabito, Cordillera Central, Dominican Republic and was found to be identical withPicramnia dictyoneura (Urban) Urban (Simaroubaceae).
Thomas A Zanoni
exaly   +2 more sources

3-epi-betulinic acid, a new triterpenoid from Picramnia pentandra

Phytochemistry, 1972
Abstract Extraction of the bark of Picramnia pentandra Sw. gave as the main component a new triterpenoid, whose structure was established as 3-epi-betulinic acid.
W. Herz, P.S. Santhanam, Inger Wahlberg
exaly   +2 more sources

Structure Elucidation and Absolute Configuration Determination of Nortriterpenoids from Picramnia glazioviana [PDF]

Journal of Natural Products, 2020
In this study, HPLC-PDA-HRMS-SPE-NMR data were used for initial analysis of the CH2Cl2 fraction of an EtOH extract of the leaves of Picramnia glazioviana. The HRMS, UV, and NMR data obtained from the HPLC-PDA-HRMS-SPE-NMR analysis were used to direct semipreparative HPLC isolation toward nortriterpenoids, which resulted in the isolation of 18 new and ...
Leila Gimenes, Liany Luna-Dulcey, Joao M. Batista, Fernando M. dos Santos, Cecília P. Popolin, Marcia R. Cominetti, Joao B. Fernandes, Dan Staerk   +7 more
openaire   +4 more sources

Especie nueva de Picramnia (Picramniaceae) del estado de Guerrero, México

Brittonia, 2015
Se describe e ilustra a Picramnia thomasii, como una especie nueva del estado de Guerrero, Mexico. La especie nueva se relaciona con P. guerrerensis, pero difiere por tener foliolos con indumento en enves, inflorescencia estaminada de mayores dimensiones y con mas glomerulos, petalos de forma y color diferente, estambres con mayor longitud, frutos ...
Jaime Jiménez Ramírez, César Adrián González Martínez   +1 more
exaly   +2 more sources

A New Species of Picramnia (Picramniaceae) from the Atlantic Coastal Forest of Southern Bahia, Brazil

Brittonia, 1997
A new species ofPicramnia (Picramniaceae) is described, illustrated, and compared to related Amazonian species. The new species,Picramnia coccinea, is known only from three localities in three adjacent municipalities near Ilheus, Bahia, and constitutes another example of endemism in the southern Bahian flora.
William Wayt Thomas, Thomas Wm Wayt
exaly   +2 more sources

Comparative phytochemistry of Picramnia and Alvaradoa, genera of the newly established family Picramniaceae

Biochemical Systematics and Ecology, 2003
The structures of the secondary metabolites, including fatty acids, of the genera Picramnia and Alvaradoa (Picramniaceae) are surveyed. Neither the fatty acid profiles nor the structures of the anthraquinones and sugar linked anthracenone derivatives characteristic of both genera indicate close relationships between the Picramniaceae and any other ...
Helen Jacobs
exaly   +2 more sources

Picraviane A and B: Nortriterpenes with limonoid-like skeletons containing a heptanolide E-ring system from Picramnia glazioviana [PDF]

Phytochemistry, 2019
Two highly oxygenated nortriterpenes, picraviane A and B, were isolated from the ethanolic extract of Picramnia glazioviana Engl. The structures were determined by analysis of HRMS and 2D NMR spectroscopic data. Single-crystal X-ray diffraction data was also obtained for picraviane B.
Gimenes, Leila, Batista Junior, Joao Marcos, dos Santos Junior, Fernando Martins, Souza, Matheus da Silva, Luna-Dulcey, Liany, Ellena, Javier, Cominetti, Marcia Regina, da Silva, Maria Fatima das Graças Fernandes, Vieira, Paulo Cezar, Fernandes, Joao Bastita, Stærk, Dan   +10 more
openaire   +4 more sources

Revisão taxonômica de Picramnia Sw. (Simaroubaceae) no Brasil [PDF]

, 2023
O presente trabalho constitui o estudo morfológico e a revisão taxonômica das espécies do gênero neotropical Picramnia Sw. (Simaroubaceae) ocorrentes no Brasil. O estudo foi baseado em materiais coletados pelo autor, observações de populações na natureza
Pirani, Jose Rubens
openaire   +3 more sources

Das Fett der Samen von Picramnia Sow

Recueil Des Travaux Chimiques Des Pays-Bas, 1933
Alph Steger
exaly   +2 more sources

An anthrone from Picramnia antidesma

Phytochemistry, 1998
Abstract A new chrysophanol anthrone C-glycoside, named uveoside and four known compounds were isolated and identified from the chloroform extract of roots from Picramnia antidesma .
Maria Del R Hernandez-Medel, Irma Garcia-Salmones, Rosa Santillan, Angel Trigos   +3 more
openaire   +1 more source