Results 81 to 90 of about 5,564 (213)

Resilience of floral scent emission after florivory

Plant Biology, EarlyView.
Florivory is thought to affect floral traits, impacting pollination. However, our data suggest a stability in post‐florivory scent emission, which may guarantee the maintenance of pollinator visitation regardless of florivory, indicating a resilience of natural systems with multiple and simultaneous interactions. Created in BioRender. Tunes, P.
P. Tunes, Y. Canaveze, S. R. Machado, S. Dötterl, E. Guimarães   +4 more
wiley   +1 more source

Regiodivergent C3 and C4 Amination of Quinolines via Radical and Ionic Pathways

Angewandte Chemie, Volume 138, Issue 16, 13 April 2026.
A regiodivergent strategy converts a single N‐aminoquinolinium precursor into either C3‐ or C4‐aminated quinolines. Nucleophile‐induced dearomatization diverges into light‐driven N‐centered radical capture (C3) or base‐promoted SNAr (C4), enabling rapid assembly of aminoquinoline libraries and late‐stage diversification.
Ye‐Eun Kim, Jieun Kim, Juyeon Lee, Sungwoo Hong   +3 more
wiley   +2 more sources

Antioxidant and Anticancer Constituents from the Leaves of Liriodendron tulipifera

Molecules, 2014
Sixteen compounds were extracted and purified from the leaves of Liriodendron tulipifera. These compounds include aporphines, oxoaporphine, coumarin, sesquiterpene lactone, benzenoids, cyclitol and steroids.
Ya-Fei Kang, Chi-Ming Liu, Chiu-Li Kao, Chung-Yi Chen   +3 more
doaj   +1 more source

Sink-Stable Sets of Digraphs [PDF]

, 2012
We introduce the notion of sink-stable sets of a digraph and prove a min-max formula for the maximum cardinality of the union of k sink-stable sets. The results imply a recent min-max theorem of Abeledo and Atkinson on the Clar number of bipartite plane ...
Erdős, Dóra, Frank, András, Kun, Krisztián   +2 more
core  

Role of Kekul\'e and Non-Kekul\'e Structures in the Radical Character of Alternant Polycyclic Aromatic Hydrocarbons: A TAO-DFT Study

, 2016
We investigate the role of Kekule and non-Kekule structures in the radical character of alternant polycyclic aromatic hydrocarbons (PAHs) using thermally-assisted-occupation density functional theory (TAO-DFT), an efficient electronic structure method ...
Chai, Jeng-Da, Yeh, Chia-Nan
core   +1 more source

Phylogenetic history shapes the composition of floral scents in a specialized pollination mutualism

New Phytologist, Volume 250, Issue 5, Page 3428-3443, June 2026.
Summary Most studies of the chemical ecology of plant–pollinator interactions emphasize the role of pollinator‐mediated selection in shaping floral scent composition. Nevertheless, phylogeny may constrain the metabolic pathways underlying these profiles, thereby influencing the evolutionary trajectory of the emitted signals.
Li Cao, Nina Joffard, Simon T. Segar, Daniel Souto‐Vilarós, Steven D. Johnson, Bruno Buatois, Anne‐Geneviève Bagnères, Martine Hossaert‐McKey, Magali Proffit   +8 more
wiley   +1 more source

Mo‐Catalyzed Synthesis of N‐Polyheterocycles From Functionalized Nitroarenes and Aldehydes

Asian Journal of Organic Chemistry, Volume 15, Issue 5, May 2026.
Mo(VI)‐catalyzed one‐pot conversion of readily available functionalized nitroarenes and aldehydes yielded fused N‐polyheterocycles by sequential nitro reduction, imine formation, and cyclization. Using pinacol as a benign reductant, this sustainable tandem strategy suppresses side reactions and grants rapid access to diverse pharmacologically relevant ...
Raúl Martínez‐González, Rubén Rubio‐Presa, María R. Pedrosa, Samuel Suárez‐Pantiga, Roberto Sanz   +4 more
wiley   +1 more source

Secretion mechanisms of volatile organic compounds in specialized cells of aromatic plants [PDF]

, 2004
The present review focuses on cells secreting volatile odorant compounds. This cell type is found in a wide variety of plants, grouped under the term aromatic plants.
Baudino, Sylvie, Bergougnoux, Véronique, Caissard, Jean-Claude, Hugueney, Philippe, Joly, Caroline, Mauriat, Mélanie   +5 more
core   +1 more source

GC × GC‐TOF MS and Sensory Profiling of Aroma Compounds in Magnolia Species: Effects of Processing Methods on Volatile Retention in M. wufengensis

Flavour and Fragrance Journal, Volume 41, Issue 3, Page 487-503, May 2026.
The first comparative analysis of Magnolia scents reveals that M. wufengensis is characterised by a high aldehyde content, exhibiting a fresh, sweet, and fruity fragrance profile. Furthermore, freeze‐drying preserves 6.7 times more 2‐nonenal compared to shade‐drying, highlighting its superior efficacy in retaining key volatile compounds.
Xiaole Wang, Zhonghua Du, Lei Xu, Junjie Hu, Tao Xiong, Chiqing Chen, Lichun Ye, Zhaohua Shi   +7 more
wiley   +1 more source

In Vitro Anticancer Activity and Structural Characterization of Ubiquinones from Antrodia cinnamomea Mycelium

Molecules, 2017
Two new ubiquinones, named antrocinnamone and 4-acetylantrocamol LT3, were isolated along with six known ubiquinones from Antrodia cinnamomea (Polyporaceae) mycelium. The developed HPLC analysis methods successfully identified eight different ubiquinones,
I-Chuan Yen, Shih-Yu Lee, Kuen-Tze Lin, Feng-Yi Lai, Mao-Tien Kuo, Wen-Liang Chang   +5 more
doaj   +1 more source