Results 21 to 30 of about 6,193 (194)

A New Canthinone-Type Alkaloid Isolated from Ailanthus altissima Swingle

open access: yesMolecules, 2016
The present investigation of the chemical constituents of the stem barks of Ailanthus altissima has resulted in the isolation of six canthinone-type alkaloids, including a new compound, (R)-5-(1-hydroxyethyl)-canthine-6-one (1), and five known compounds (
Hye Mi Kim   +7 more
doaj   +1 more source

New genus and species of Schizomyiina (Diptera, Cecidomyiidae) from Brazil

open access: yesPapéis Avulsos de Zoologia, 2021
A new gall midge genus, Distinctamyia gen. nov., and a new species Distinctamyia matogrossensis sp. nov. (Diptera, Cecidomyiidae) are herein described and illustrated (larvae, pupal exuviae, male and female). The new species induces conical, green, hairy
Barbara Proença, Valéria Cid Maia
doaj   +1 more source

Systematic anatomy of the woods of the Burseraceae

open access: yesLilloa, 2021
The author describes the anatomy of the Burseraceae log and compares it with that of Anacardiaceae, Rutaceae, Simaroubaceae and Meliaceae. The similarities in the structure of his logs suggest the possibility of a common origin; those of Meliaceae show ...
Irma Eleanor Schimdt Webber
doaj  

Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil) FAMÍLIA: 115-Simaroubaceae (atual Picramniaceae) [PDF]

open access: yesHoehnea
(Pollen flora of "Reserva do Parque Estadual das Fontes do Ipiranga" (São Paulo, Brazil). Family: 115-Simaroubaceae (currently Picramniaceae)). In the present work, the pollen grains of three species belonging to the family Simaroubaceae (currently ...
Cynthia Fernandes Pinto da Luz   +2 more
doaj   +1 more source

Production of eurycomanone from cell suspension culture of Eurycoma longifolia

open access: yesPharmaceutical Biology, 2017
Context: Eurycomanone is found in the Eurycoma longifolia Jack (Simaroubaceae) tree, exhibits significant antimalarial activity, improves spermatogenesis, suppresses expression of lung cancer cell tumour markers and regulates signalling pathways involved
Nguyen Huu Nhan, Nguyen Hoang Loc
doaj   +1 more source

Gram-scale isolation of isobrucein B and neosergeolide from Picrolemma sprucei Hook. f. Isolamento de isobruceina B e neosergeolida de Picrolemma sprucei Hook. f. em escala-grama

open access: yesActa Amazonica, 2009
Quassinoids neosergeolide and isobrucein B, obtained from Picrolemma sprucei, have proven in vitro antitumor, antimalarial, anthelminthic, cytotoxic, insecticide and leishmanicidal activities.
Ellen Cristina Costa da Silva   +3 more
doaj   +1 more source

A Deep Metagenomic Snapshot as a Proof-of-Concept for Resource Generation: Simultaneous Assembly of Host, Food, and Microbiome Genomes From Stingless Bee Larval Food. [PDF]

open access: yesEcol Evol
This study serves as a proof‐of‐concept, demonstrating that deep shotgun sequencing of a single complex sample—stingless bee larval food—can simultaneously generate multiple genomic resources. From this dataset, we assembled three genomes (a near‐complete bacterium, a draft host mitochondrion, and a fragmented plant chloroplast) with varying ...
Ueira-Vieira C   +6 more
europepmc   +2 more sources

New distribution record of Daceton boltoni Azorsa and Sosa-Calvo, 2008 (Insecta: Hymenoptera) in the Brazilian Amazon [PDF]

open access: yesCheck List, 2011
The presence of Daceton boltoni in Cotriguaçu municipality, state of Mato Grosso, southern Amazon is reported. Workers of D. boltoni were collected manually in nests on the branches of three Caxeta trees (Simarouba amara Aubl.
Ricardo Vicente   +2 more
doaj   +3 more sources

In vitro and in vivo assessement of the antimalarial activity of sergeolide [PDF]

open access: yes, 1985
L'activité antiplasmodiale, in vitro, in vivo du Sergeolide, Quassinoide isolé de #Picrolemma pseudocoffea$ a été mesurée, in vitro, sur des cultures de #Plasmodium faliciparum$ et in vivo par le test classique de la mesure de l'activité schizonticide ...
Fandeur, T.   +2 more
core   +1 more source

Anatomia Foliar e Caulinar de Picrolemma sprucei Hook (Simaroubaceae) [PDF]

open access: yesActa Amazonica, 2003
Os estudos anatômicos das folhas e caules de Picrolemma sprucei revelaram que as epidermes das folhas são glabras, apresentam células de paredes onduladas e estômatos anomocíticos.
Rita de Cássia Guedes SARAIVA   +6 more
doaj   +1 more source

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