Results 61 to 70 of about 1,801 (155)

Chemical profiling and characterisation of anthraquinone‐based polyphenols as biocolourants from Cortinarius semisanguineus

Coloration Technology, Volume 141, Issue 6, Page 855-888, December 2025.
Abstract Anthraquinone dyes are known for their significant colour (brightness of shade in the red, blue and green areas) and light fastness properties compared with other synthetic dyes (such as azo‐based dyes). However, challenging multi‐step synthesis of anthraquinones and limited access to fewer substituents result in insufficient reactivity ...
Arvind Negi, Peppi Toukola, Riikka Räisänen   +2 more
wiley   +1 more source

REGIOSELECTIVE SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF O-ALKYLATED PHYSCION'S DERIVATIVES

Journal of the Chilean Chemical Society, 2007
Regioselectivity in the reaction of microwave promoted O-alkylation of physcion in the presence of montmorillonite clay K-10 was discussed. The mechanism of formation of corresponding anions of physcion was investigated using semiempirical molecular-orbital methods. The results of antibacterial and antifungal activity of the obtained derivatives showed
MANOJLOVIC, N, MARKOVIC, Z, DURIC, M
openaire   +2 more sources

Isolation and antimicrobial acitivity of anthraquinones from some species of the lichen genus Xanthoria [PDF]

Journal of the Serbian Chemical Society, 2000
The isolation of six anthraquinones, erythroglaucin, physcion, xanthorin, emodin, fallacinal and teloschistin, from three species of the lichen genus Xanthoria (X. fallax, X. elegans and X. policarpa) is reported.
LJ. KRSTIC, S. SUKDOLAK, S. SOLUJIC, N. T. MANOJLOVIC   +3 more
doaj  

TNFα Receptor 1 and Not Receptor 2 Affect Annulus Fibrosus and Nucleus Pulposus Response to Cytokine Challenge in a Rat Model

JOR SPINE, Volume 8, Issue 2, June 2025.
TNFα receptor‐specific signaling is important in rat IVDD in vivo and in vitro. TNFR1 inhibition was more effective with small molecules than with blocking antibodies. Low levels of TNFR2 in rat AF and NP cells, and the lack of efficacy of TNFR2‐activator Atsttrin, suggest that native AF and NP cells have little capacity for TNFR2‐dependent IVD repair.
Timothy D. Jacobsen, S. Olga Yiantsos, Jennifer Gansau, James Meyers, Damien Laudier, James C. Iatridis   +5 more
wiley   +1 more source

MICROWAVE-ASSISTED RAPID SYNTHESIS OF PHYSCION’S DERIVATIVES UNDER SOLVENT FREE CONDITION

Journal of the Chilean Chemical Society, 2007
The 1- and 8-O-alkylated physcion’s derivatives are easily synthesized in good yields upon exposure to microwave irradiation under solvent free conditions and reaction times are considerable ...
MANOJLOVI, I, SUKDOLAK, S, VUKOVI, N, MANOJLOVI, N   +3 more
openaire   +2 more sources

Discovery of Rhubarb Anthraquinones Physcion and Rhein as Functional Inhibitors of TRPV1 Against Lipopolysaccharide-Induced Neuroinflammation

Molecules
Neuroinflammation, mediated by microglia and astrocytes, is an abnormal immune reaction in central nervous system (CNS) disorders. Stimulation of TRPV1 has been found to enhance microglial activation, resulting in a pro-inflammatory response.
Shuli Li, Yulin He, Hiotong Kam, Hanbin Chen, Jin-Song Bian, Nan Xu, Guiyi Gong, Qiwen Liao, Chen Zhao, Binrui Yang, Liang Chen, Kit Ieng Kuok, Simon Ming Yuen Lee   +12 more
doaj   +1 more source

Aloe-emodin induces apoptosis in human oral squamous cell carcinoma SCC15 cells

BMC Complementary and Alternative Medicine, 2018
Background Oral and pharyngeal cancer is the most common malignant human cancers. Chemotherapy is an effective approach for anti-oral cancer therapy, while the drug tolerance and resistance remain a problem for oral cancer patients.
Qihong Li, Jun Wen, Kaitao Yu, Yao Shu, Wulin He, Hongxing Chu, Bin Zhang, Cheng Ge   +7 more
doaj   +1 more source

Qishiwei Zhenzhu Pills Protect Against Cerebral Ischemia via the P53/Cytochrome C/Apoptotic Protease Activating Factor 1‐Mediated Mitochondrial Apoptosis Pathway

CNS Neuroscience &Therapeutics, Volume 31, Issue 6, June 2025.
Ultra‐high performance liquid chromatography with quadrupole time‐of‐flight mass spectrometry was used for qualitative and metabolomic analysis of the distribution of Qishiwei Zhenzhu pills’ (QSWZZP, Tibetan name: རཏྣ་བསམ་འཕེལ།) components in the blood and tissues.
Yinglian Song, Guili Song, Lame Lizhen, Yan Liang, Mengtian Han, Yichu Yang, Qiaoqiao Feng, Yi Li, Jingwen Zhang, Min Xu, Yongzhong Zeweng, Miao Jiang, Zhang Wang   +12 more
wiley   +1 more source

Dynamic Changes of Microbial Communities and Chemical Compounds During the Dry Processing of Coffea arabica

Food Science &Nutrition, Volume 13, Issue 4, April 2025.
Tatumella, Klebsiella, Gluconobacter, Brevundimonas, and Staphylococcus at the bacterial general level and Candida, Lachancea, Aschersonia, Cercospora, and Pichia at the fungi general level were the predominant microorganisms during the dry processing of Coffea arabica.
Xiaojing Shen, Qi Wang, Biao Yuan, Zhiheng Yin, Muzi Li, Runxin Shi, Kunyi Liu, Wenjuan Yuan   +7 more
wiley   +1 more source

Naturally‐occurring nematicides of plant origin: two decades of novel chemistries

Pest Management Science, Volume 81, Issue 2, Page 540-571, February 2025.
A review of structure–activity correlations for 262 plant‐derived nematicidal compounds for controlling plant parasitic nematodes is presented. Chemical structures, sources, and isolation procedures are summarized based on the major chemical groups. Abstract Plant‐parasitic nematodes are among the most destructive plant pathogens, resulting in a global
Hashim Ibrahim, Vaderament‐A. Nchiozem‐Ngnitedem, Louise‐Marie Dandurand, Inna Popova   +3 more
wiley   +1 more source