Results 71 to 80 of about 3,431 (233)

Hetero-Atom Effects on Kinetic Acidities: The Metalation of 1-Methyl-cyclohexene and its 4-Aza- and 4-Oxa-Analogs

CHIMIA, 1985
Hexane suspensions of trimethylsilylmethylpotassium or butyllithium/potassium tert-butoxide deprotonate 1-methyl-cyclohexene almost exclusively at the methyl group.
Etienne Moret, Philippe Schneider, Christian Margot, Manfred Stähle, Manfred Schlosser   +4 more
doaj   +1 more source

Integrated Phytochemical Characterisation, Pharmacological Evaluation and Computational Investigation of Acampe papillosa Stem Extract

Analytical Science Advances, Volume 7, Issue 2, December 2026.
The pharmacological potential of the methanolic stem extract of Acampe papillosa is evaluated using in vivo and in silico approaches. The extract demonstrates significant anxiolytic, sedative, anti‐inflammatory, and antipyretic activities in experimental models, while molecular docking supports the observed biological effects through favorable ...
Qurratul Ain Sadia, Sadia Tamanna Tamim, Faruq Mohammed Tashriq, Nasir Uddin, Fatematus Zhohara Alam Hima, Ulfat Sobha Surat, Mily Khastagir, Muhammad Abdul Jalil, Md. Hossain Rasel, Arman Ullah Rafi, S. M. Moazzem Hossen   +10 more
wiley   +1 more source

Hydroxyl-Directed Ruthenium-Catalyzed C–H Bond Functionalization: Versatile Access to Fluorescent Pyrans [PDF]

, 2016
Hydroxyl-assisted oxidative annulations of alkynes were accomplished with an inexpensive ruthenium(II) complex, delivering fluorescent pyrans via highly site selective as well as chemo- and regioselective C–H/O–H bond ...
Margherita Donati (2067406), Vedhagiri S. Thirunavukkarasu (1939174), Lutz Ackermann (1392253)   +2 more
core   +1 more source

A Perspective of Soy Isoflavones on Analytical, Biological, and Chemical Attributes

Legume Science, Volume 8, Issue 3, September 2026.
ABSTRACT This review covers key aspects of soybean (Glycine max), with a particular focus on its isoflavone content and biological properties. Soybeans maintain their position as both a nutraceutical and a pharmaceutical crop, with a broad range of dietary items used worldwide, including soy milk, fermented soy products, and various dietary supplements.
Sristy Suman, Joydeep Chatterjee, Gaurav Joshi, Raj Kumar, Muhammad Wahajuddin   +4 more
wiley   +1 more source

Copper-catalysed asymmetric allylic alkylation of alkylzirconocenes to racemic 3,6-dihydro-2H-pyrans

Beilstein Journal of Organic Chemistry, 2015
Asymmetric allylic alkylation is a powerful reaction that allows the enantioselective formation of C–C bonds. Here we describe the asymmetric alkylation of alkylzirconium species to racemic 3,6-dihydro-2H-pyrans.
Emeline Rideau, Stephen P. Fletcher
doaj   +1 more source

Synthesis of Pyran and Pyranone Natural Products [PDF]

Molecules, 2004
An overview of the synthesis of the fungal metabolites (+)-dermolactone, (–)- semixanthomegnin, (+)- and (–)-mellein, (–)-ochratoxin α, (–)-(1R,3S)-thysanone, the enantiopure ventiloquinones L, E and G, and 8-desmethyleleutherin from a common chiral intermediate, is presented. Further methodology leading potentially toward extended quinones such as (3S,
Donner, Christopher D., Gill, Melvyn, Tewierik, Leonie M.   +2 more
openaire   +4 more sources

Nutritional quality traits in pea seed: Current knowledge and opportunities for genetic improvement

Annals of Applied Biology, Volume 189, Issue 2, September 2026.
This comprehensive review on nutritional traits in pea (Pisum sativum L.) summarizes the literature on genetic improvement of this highly nutritious and environmentally sustainable crop for different end‐uses. Abstract Pea is a major pulse crop valued for its high protein, carbohydrate, and mineral content, as well as its agronomic role in sustainable ...
Ahmed O. Warsame, Janneke Balk
wiley   +1 more source

[Chemical and pharmaceutical research on pyran derivatives. X. Synthesis of 1-oxo-2-alkyl-3-dialkylamino-1H-naphtho[2,1b]pyrans]. [PDF]

, 1978
When reaction of N,N-dialkyl-alpha-ethoxycarbonyl-alpha-alkylacetamides with beta-naphthol in the presence of phosphorus oxychloride was carried out in chlorobenzene at reflux, formation of 1-oxo-2-alkyl-3-dialkyl-amino-1H-naphtho[2,1-b]pyrans was ...
Roma G, DI BRACCIO, MARIO, Ermili A., BALBI, ALESSANDRO   +3 more
core  

A MassQL‐Based Framework for Rule‐Guided MS/MS Class‐Level Retrieval and Analog Discovery of Cannabinoids

Rapid Communications in Mass Spectrometry, Volume 40, Issue 16, 30 August 2026.
ABSTRACT Rationale Cannabinoids comprise a chemically diverse group of meroterpenoids whose extensive isomerism, variable side‐chain length, and frequent oxidative or rearranged derivatives lead to strongly overlapping yet characteristic MS/MS fragmentation patterns. In untargeted LC–MS/MS datasets, this combination of structural diversity and spectral
Julia Maia Galvão de Queiroz, Fernanda Oliveira Chagas, Valdir Florêncio Veiga‐Júnior, Monica Costa Padilha, Ricardo M. Borges   +4 more
wiley   +1 more source

Hydroxyl-Directed Ruthenium-Catalyzed C-H Bond Functionalization: Versatile Access to Fluorescent Pyrans [PDF]

, 2012
Hydroxyl-assisted oxidative annulations of alkynes were accomplished with an inexpensive ruthenium(II) complex, delivering fluorescent pyrans via highly site selective as well as chemo- and regioselective C-H/O-H bond functionalizations.Alexander von ...
Ackermann, Lutz, Thirunavukkarasu, Vedhagiri S., Donati, Margherita   +2 more
core   +1 more source