Results 51 to 60 of about 3,844 (181)

Remarkable Phytochemical Characteristics of Chi-Nan Agarwood Induced from New-Found Chi-Nan Germplasm of Aquilaria sinensis Compared with Ordinary Agarwood

open access: yesInternational Journal of Analytical Chemistry, 2021
Wild Chi-Nan agarwood is regarded as the highest quality agarwood from Aquilaria spp. However, the comprehensive research on chemical composition of wild Chi-Nan agarwood is limited. An integrated strategy using SHS-GC-MS and UPLC-Q/Tof-MS was applied to
Meng Yu   +7 more
doaj   +1 more source

Eine neue Chromon‐Synthese [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1913
n ...
Petschek, Ernst, Simonis, H.
openaire   +2 more sources

Multi‐Targeting Ligands as Prospective Therapeutics for Alzheimer's Disease, a Prevalent Neurodegenerative Disorder: Mechanistic Insights, Emerging Targets and Drug Discovery Campaigns

open access: yesMedicinal Research Reviews, Volume 46, Issue 4, Page 1173-1229, July 2026.
ABSTRACT Alzheimer's disease (AD) is a debilitating neurodegenerative condition characterized by progressive cognitive impairment, memory deterioration, and neuronal dysfunction. Its complex pathophysiology involves multiple interlinked processes, including amyloid‐β (Aβ) aggregation, tau hyperphosphorylation, oxidative stress, neuroinflammation ...
Amandeep Thakur   +6 more
wiley   +1 more source

A Novel Approach to the Synthesis of 6-Amino-7-hydroxy-flavone

open access: yesMolecules, 2004
A novel approach to the synthesis of 6-amino-7-hydroxyflavone (1) is described. Reaction in acetone of 2′,4′-dihydroxy-5′-nitroacetophenone and benzoyl chloride in the presence of potassium carbonate affords 3-benzoyl-7-hydroxy-6 ...
Tianyu Zhuang   +5 more
doaj   +1 more source

Kaempferide in Alpinia officinarum Hance Exerts Anti‐Hepatocellular Carcinoma Activity by Inhibiting Mitophagy Through Downregulation of BNIP3L

open access: yesJournal of Cellular and Molecular Medicine, Volume 30, Issue 13, July 2026.
ABSTRACT Hepatocellular carcinoma (HCC), the most common primary malignant tumour of the liver, is notorious for its high mortality rate.Alpinia officinarum Hance (A. officinarum) is a perennial medicinal herb used for the management of abdominal pain, vomiting, and gastrointestinal tumours, and is widely applied as a dietary intervention by the Li ...
Lu Lu   +9 more
wiley   +1 more source

Crystal structure of 4-(6-chloro-4-oxo-4H-chromen-3-yl)-2-methylamino-3-nitro-4H,5H-pyrano[3,2-c]chromen-5-one chloroform monosolvate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C23H14Cl4N2O7, the pyran ring has an envelope conformation with the methine C atom as the flap. The chromene rings are almost planar (r.m.s.
Rajamani Raja   +3 more
doaj   +1 more source

The Rise of Stemphylium vesicarium: A Growing Threat to Pear Production in Europe

open access: yesPlant Pathology, Volume 75, Issue 4, July‐August 2026.
Brown spot of pear, caused by the fungus Stemphylium vesicarium, was reported in Italy in 1975 and only recently, due to climate change and pesticide restrictions, it became a major threat for European pear production. New knowledge on this pathogen can allow the advent of new and effective control strategies.
Xueqin Chen   +5 more
wiley   +1 more source

Identification of a diarylpentanoid-producing polyketide synthase revealing an unusual biosynthetic pathway of 2-(2-phenylethyl)chromones in agarwood

open access: yesNature Communications, 2022
2-(2-Phenylethyl)chromones (PECs) contribute to the distinctive fragrance of agarwood. Here the authors identify a diarylpentanoid-producing polyketide synthase from Aquilaria sinensis and show how it catalyzes PEC formation.
Xiao-Hui Wang   +17 more
doaj   +1 more source

A new chromone from agarwood and pyrolysis products of chromone derivatives.

open access: yesChemical and Pharmaceutical Bulletin, 1985
A new chromone, 2-(2-4'-methoxyphenylethyl) chromone (I) was isolated together with 2-(2-phenylethyl) chromone (II : flidersiachromone) from agarwood (Japanese name ; JINKOH). On pyrolysis at 150°C, I and II were found to produce 4-methoxybenzaldehyde and benzaldehyde, respectively.
HASHIMOTO, KEIJI   +5 more
openaire   +2 more sources

Discovery of pseudobaptigenin synthase in fungal‐infected Trifolium pratense roots

open access: yesThe Plant Journal, Volume 127, Issue 1, July 2026.
Significance Statement The discovery of pseudobaptigenin synthase in red clover (CYP76F319), catalyzing the formation of a methylenedioxy bridge to convert calycosin to pseudobaptigenin. The integration of metabolomic and transcriptomic datasets to describe the defense response in red clover roots to hemibiotrophic and necrotrophic fungi.
Lee Marie Raytek   +3 more
wiley   +1 more source

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