Results 41 to 50 of about 16,857 (213)

Synthesis of new flavonoid derivatives based on 3-hydroxy-4′-dimethylamino flavone and study the activity of some of them as antifungal

Heliyon, 2022
Chalcone was prepared in a new route by reacting o-hydroxyacetophenone with 4-dimethylaminobenzaldehyde using piperidine as a catalyst. 3-Hydroxy-2-[4-(dimethylamino)phenyl] benzopyran-4-one were prepared by Algar-Flynn-Oyamada method by cyclization of ...
Hadi Aqel Khdera, Sawsan Youseff Saad, Aoula Moustapha, Farouk Kandil   +3 more
doaj   +1 more source

Analysis of Nebivolol hydrochloride and Valsartan in Pharmaceutical Dosage Form by High Performance Thin Layer Chromatographic Method [PDF]

, 2011
A simple, accurate and precise high performance thin layer chromatographic method has been developed for the estimation of Valsartan and Nebivolol hydrochloride simultaneously from a tablet dosage form.
Alok Mukerjee, Anil Singh, Mrinalini Damle, Shanti Mishra, Shradhanjali Singh, Shradhanjali Singh   +5 more
core   +2 more sources

Light‐Programmable Interfaces: From Molecular Photoswitching to Adaptive Membrane Separations

Advanced Materials Interfaces, EarlyView.
This review advances an interface‐centered framework for light‐responsive membranes, linking molecular photoswitches (azobenzene (AZO), spiropyran (SP), diarylethene (DAE), donor–acceptor Stenhouse adducts (DASA), photoacid) to integration strategies in polymeric, porous, self‐assembled, and mixed‐matrix systems.
Liangliang Zhang, Senlin Gu, Jianyang Zhao, Xiaojuan Hao, Lu Hua Li, Jihua Li, Lingxue Kong   +6 more
wiley   +1 more source

5-Chlorospiro[indoline-3,7′-6H,7H,8H-pyrano[3,2-c:5,6-c′]di[1]benzopyran]-2,6′,8′-trione

Acta Crystallographica Section E, 2012
The asymmetric unit of the title compound, C26H12ClNO6, consists of two independent molecules. The central pyran rings and both the 1-benzopyran ring systems are nearly planar in both molecules [r.m.s.
Abdulrahman I. Almansour, Raju Suresh Kumar, Natarajan Arumugam, S. Kanagalaksmi, J. Suresh   +4 more
doaj   +1 more source

Adjuvant therapeutic potential of tonabersat in the standard treatment of glioblastoma : a preclinical F98 glioblastoma rat model study [PDF]

, 2019
Purpose Even with an optimal treatment protocol, the median survival of glioblastoma (GB) patients is only 12-15 months. Hence, there is need for novel effective therapies that improve survival outcomes.
Bonte, Ellen, De Meulenaere, Valerie, De Wever, Olivier, Deblaere, Karel, Descamps, Benedicte, Goethals, Ingeborg, Kalala Okito, Jean-Pierre, Leybaert, Luc, Pieters, Leen, Vanhove, Christian, Verhoeven, Jeroen, Vral, Anne   +11 more
core   +1 more source

Effects of catechins, resveratrol, silymarin components and some of their conjugates on xanthine oxidase‐catalyzed xanthine and 6‐mercaptopurine oxidation

Journal of the Science of Food and Agriculture, Volume 105, Issue 5, Page 2765-2776, 30 March 2025.
Abstract BACKGROUND Over the past two decades, the global incidence of gout has markedly increased, affecting people worldwide. Considering the side effects of xanthine oxidase (XO) inhibitor drugs (e.g. allopurinol and febuxostat) used in the treatment of hyperuricemia and gout, the potential application of phytochemicals has been widely studied.
Tímea Bencsik, Orsolya Balázs, Róbert G Vida, Balázs Z Zsidó, Csaba Hetényi, Kateřina Valentová, Miklós Poór   +6 more
wiley   +1 more source

Synthesis and spectral characterization of a fluorescent marker [PDF]

, 2004
A fluorescent naphtofuran was synthetized from benzopyran by alcaline ring contraction and coupled to the α-amine group of various amino acids, in order to evaluate its applicability as a fluorescent marker for biomolecules.
Costa, Susana P. G., Gonçalves, M. Sameiro T., Piloto, Ana M.   +2 more
core   +1 more source

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela, Raffael Silva Santos Almeida, Ivana Ferreira Simões, Aline Gonçalves Miranda, Magno Oliveira Ramos, Roberto Rodrigues Bandeira Tosta Maciel, Fernanda Warken Rosa, Aníbal de Freitas Santos Júnior   +7 more
wiley   +1 more source

Synthesis of novel photochromic pyrans via palladium-mediated reactions

Beilstein Journal of Organic Chemistry, 2009
Photochromic pyrans for applications in material and life sciences were synthesized via palladium-mediated cyanation, carbonylation and Sonogashira cross-coupling starting from bromo-substituted naphthopyran 1 and benzopyrans 2a/b.
Christoph Böttcher, Gehad Zeyat, Saleh A. Ahmed, Elisabeth Irran, Thorben Cordes, Cord Elsner, Wolfgang Zinth, Karola Rueck-Braun   +7 more
doaj   +1 more source

In Vitro and In Silico Evaluation of Cladophora sp. as an Anti-Inflammatory Agent via COX-2 (Cyclooxygenase-2) Inhibition [PDF]

BIO Web of Conferences
Cladophora sp. is known to contain chemical constituents with pharmacological properties. The secondary metabolites present in Cladophora sp. include alkaloids, phenolic compounds, saponins, and terpenoids, and it has been reported to exhibit anti ...
Bintari Yoni Rina, Kusumawati Shinta
doaj   +1 more source