Results 101 to 110 of about 49,819 (301)

PHÂN LẬP VÀ XÁC ĐỊNH CẤU TRÚC CÁC TRITERPENE VÀ STEROL TỪ CÂY CƠM RƯỢU HOA NHỎ (GLYCOSMIS PARVIFLORA)

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2020
Bằng cách sử dụng kết hợp các phương pháp sắc ký, bốn hợp chất gồm friedelin (1), arborinol (2), isoarborinol (3) và stigmasterol (4) đã được phân lập từ phần trên mặt đất của cây Cơm rượu hoa nhỏ (Glycosmis parviflora (Sims) Little).
Nguyen Dinh Quynh Phu, Le Tuan Anh, Nguyen Thi Hoai, Ho Viet Duc   +3 more
doaj   +1 more source

Triterpene saponins from Cyclamen hederifolium

Phytochemistry, 2012
Five triterpene saponins never reported before, hederifoliosides A-E, and four known triterpene saponins were isolated from the tubers of Cyclamen hederifolium. The structures of hederifoliosides A-E were determined as 3β,16α-dihydroxy-13β,28-epoxyolean-30-oic acid 3-O-{[β-D-glucopyranosyl-(1 → 2)-O]-β-D-xylopyranosyl-(1 → 2)-O-β-D-glucopyranosyl-(1 ...
Hilal Altunkeyik, Derya Gülcemal, MASULLO, MILENA, Ozgen Alankus Caliskan, PIACENTE, Sonia, Tamer Karayildirim   +5 more
openaire   +6 more sources

Unveiling protective mechanisms of wild olive (acebuche) oil in retinal pigment epithelial cells with hypertensive phenotype

The Journal of Physiology, EarlyView.
Abstract figure legend Circulating extracellular vesicles (EVs) derived from acebuche (ACE) oil‐ and extra virgin olive oil (EVOO)‐fed mice modulate nitric oxide (NO) metabolism in the retinal pigment epithelial cell line (ARPE19) with a hypertensive phenotype induced by angiotensin II (AngII).
Álvaro Santana‐Garrido, Claudia Reyes‐Goya, Pablo Espinosa‐Martín, Rosa M. Troya‐Toledo, Helder André, Alfonso Mate, Carmen M. Vázquez   +6 more
wiley   +1 more source

Molecular mechanisms associated with rootstock–scion interactions in rubber trees

The Plant Genome, Volume 19, Issue 1, March 2026.
Abstract Hevea brasiliensis (rubber tree) is the main source of natural rubber worldwide. In commercial plantations, high‐yield rubber tree clones are propagated by grafting onto seedling rootstocks. In this study, the transcriptomes of the RRIM 600 clone grafted on different rootstocks in southeastern Brazil were evaluated. Exclusively expressed genes
Wanderson Lima Cunha, Vinicius Mandolesi Rios, Alexandre Hild Aono, Danilo Augusto Sforça, Aline Da Costa Lima Moraes, Milene Silvestrini, Jose Marcos Dias Ferreira Junior, Antonio Lucio Mello Martins, Elaine Cristine Piffer Gonçalves, Paulo de Souza Gonçalves, Felipe Roberto Francisco, Anete Pereira de Souza   +11 more
wiley   +1 more source

Bioinspired Synthesis of Twin abeo‐Steroids Bufogargarizins A and B via a Divergent Intramolecular Aldol Addition Reaction

Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Twin natural products. This manuscript describes a concise biomimetic synthesis of twin abeo‐steroids bufogargarizins A and B with an unusual [7.5.6.5] and [5.7.6.5] skeletons in 19 steps (LLS). The described synthetic approach features the application of a bioinspired regiodivergent intramolecular aldol addition reaction and a selective singlet oxygen‐
Zoey J. Surma, Volodymyr Hiiuk, Eugene Zviagin, Yaxin Ouyang, Alex Chacko, Fengrui Qu, Paul M. Zimmerman, Pavel Nagorny   +7 more
wiley   +2 more sources

Triterpene glycosides from Astragalus icmadophilus

Phytochemistry, 2010
Six cycloartane-type triterpene glycosides were isolated from Astragalus icmadophilus along with two known cycloartane-type glycosides, five known oleanane-type triterpene glycosides and one known flavonol glycoside. The structures of the six compounds were established as 3-O-[alpha-L-arabinopyranosyl-(1-->2)-O-3-acetoxy-alpha-L-arabinopyranosyl]-6-O ...
Ibrahim Horo, Erdal Bedir, PERRONE, ANGELA, Fevzi Oezgoekce, PIACENTE, Sonia, Ozgen Alankus Caliskan   +5 more
openaire   +5 more sources

Untargeted Metabolomics Reveals Seasonal and Tissue‐Specific Metabolic Shifts in Holothuria cinerascens

Chemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Untargeted metabolic profiling of three body tissues from Holothuria cinerascens in South Africa using 1H‐NMR and UPLC–QTOF–MS revealed distinct tissue‐specific and seasonal metabolic variations, with the body wall and gut/mesentery exhibiting high metabolite diversity.
Cassandra Upton, Gerhard Prinsloo, Paul Steenkamp, Moses Okpeku   +3 more
wiley   +1 more source

Studies on Polyethers Produced by Red Algae

Marine Drugs, 2010
Two novel squalene-derived triterpenes, spirodehydrovenustatriol (3) and 14-keto-dehydrothyrsiferol (4) were isolated from the red alga Laurencia viridis, together with two new and unusual C17 terpenoids, adejen A (5) and B (6).
Francisco Cen-Pacheco, Laurette Nordström, María Luisa Souto, Manuel Norte Martín, José Javier Fernández, Antonio Hernández Daranas   +5 more
doaj   +1 more source

New Triterpenes from the Fungus Gloeophyllum odoratum [PDF]

, 2015
Two new triterpene acids (1, 2), together with a complex mixture of lecithins (3), were isolated from the fungus Gloeophyllum odoratum. Their structures were elucidated on the basis of extensive spectroscopic analyses.
Anderluh, M., Cateni, F., Doljak, B., Lucchini, V., Procida, G., Zacchigna, M.   +5 more
core   +1 more source

Allelopathy as a Strategy for Biological Invasion: Calotropis procera and Its Impact on Plant Succession

Chemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Stages of the study on the allelopathic potential of Calotropis procera (Aiton) W. T. Aiton. The image shows the collection of plant material, the decomposition of organic matter, the identification of bioactive compounds, and the effects on the germination of Handroanthus impetiginosus (Mart. ex DC.) Mattos.
Bruno Melo de Alcântara, Paulo Henrique Calixto Santana, Felipe Rufino dos Santos, José Weverton Almeida‐Bezerra, José Galberto Martins da Costa, Delmira da Costa Silva, Cláudia Maria Furlan, Maria Arlene Pessoa da Silva   +7 more
wiley   +1 more source