Results 71 to 80 of about 20,891 (238)

Synthesis, Structures and Properties of Molecular Conductors Based on Bis-Fused Donors Composed of (Thio)Pyran-4-ylidene-1,3-dithiole and Tetraselenafulvalene

open access: yesCrystals, 2012
Bis-fused donors composed of (thio)pyran-4-ylidene-1,3-dithiole and tetraselenafulvalene (1a, 2a) and their bis(methylthio) derivatives (1b, 2b) were synthesized.
Yohji Misaki   +4 more
doaj   +1 more source

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

open access: yesLegume 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   +4 more
wiley   +1 more source

Transformation of substituted 2H-pyran-5-carboxylates into 3R*-vinyl-1,2R*-cyclopropanedicarboxylates [PDF]

open access: yes, 1998
Substituted alkyl 2H-pyran-5-carboxylates, 1, have been condensed with methyl 2-(triphenylarsoranylidene) ethanoate, 14a, to form substituted 3-vinyl-1,2-cyclopropanedicarboxylates, 15, and, in a number of cases, 2,3-dihydro-3-vinyl-2,4 ...
Moorhoff, CM (15481859)   +1 more
core  

Synthesis of Novel Hybrid 4H-Pyran-lipoic and 4H-Pyran-azetidine Derivatives [PDF]

open access: yes, 2017
In this study, a molecular hybridization strategy was used to design and synthesize two novel series of hybrid compounds: 4H-pyran-lipoic and 4H-pyran-azetidine, employing ammonium hydroxide and involving the participation of aldehydes, malononitrile ...
Yolanda Alcaraz   +7 more
core   +1 more source

Synthesis of Pyran and Pyranone Natural Products [PDF]

open access: yesMolecules, 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.   +2 more
openaire   +4 more sources

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

open access: yesAnnals 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

Enzymatic Pyran Formation Involved in Xiamenmycin Biosynthesis [PDF]

open access: yes, 2019
The pyran ring is a very common structural unit of many natural, bioactive molecules that are widely found in plants, bacteria, and fungi. However, the enzymatic processes by which many of these pyran-containing molecules are formed are unclear.
Yi-Lei Zhao (800876)   +17 more
core   +1 more source

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

open access: yesRapid 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   +4 more
wiley   +1 more source

Synthesis of Novel Pyran β-Amino Acid and 5,6-Dihydro-2H-pyran β-aminoxy Acid from Carbohydrate Derivatives [PDF]

open access: yes, 2015
Synthesis of two new amino acids, containing pyran rings, is reported from carbohydrate derivatives. The cis-3-amino-pyran-2-carboxylic acid (cis-APyC) was prepared from (R)-glyceraldehyde derivative, using nucleophilic substitution reaction for pyran ...
Marumamula Hanumaiah (734857)   +2 more
core   +1 more source

Identification of Active Compounds From Yi Nationality Herbal Formula Wosi Influencing COX-2 and VCAM-1 Signaling

open access: yesFrontiers in Pharmacology, 2020
The Yi nationality herbal formula Wosi is used in China as a folk medicine to treat arthritis and related diseases. Despite its widespread use, the active ingredients, and pharmacological mechanisms are not performed.
Ji-Zhong Zhang   +9 more
doaj   +1 more source

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