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A Bright and Ionizable Cytosine Mimic for -Motif Structures.
Bioconjug Chem
June 2023
Department of Chemistry, McGill University, Montreal, Quebec H3A-0B8, Canada.
A new fluorescent cytosine analog "C" containing a -stilbene moiety was synthesized and incorporated into hemiprotonated base pairs that comprise -motif structures. Unlike previously reported fluorescent base analogs, C mimics the acid-base properties of cytosine (p ≈ 4.3) while exhibiting bright (ε × Φ ≈ 1000 cm M) and red-shifted fluorescence (λ = 440 → 490 nm) upon its protonation in the water-excluded interface of C:C base pairs.
View Article and Find Full Text PDFMolecular encapsulation and bioactivity of gnetol, a resveratrol analogue, for use in foods.
J Sci Food Agric
August 2022
Departamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia - Regional Campus of International Excellence "Campus Mare Nostrum", Murcia, Spain.
Background: Gnetol is a stilbene whose characterization and bioactivity have been poorly studied. It shares some bioactivities with its analogue resveratrol, such as anti-inflammatory, anti-thrombotic, cardioprotective and anti-cancer activities. However, the low solubility of stilbenes may limit their potential applications in functional foods.
View Article and Find Full Text PDFPreparation and characterization of poly(3-mercaptopropyl)methylsiloxane functionalized silica particles and their further modification for silver ion chromatography and enantioselective high-performance liquid chromatography.
J Chromatogr A
April 2021
Institute of Pharmaceutical Sciences, Pharmaceutical (Bio-)Analysis, University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany. Electronic address:
The present work reports on the preparation of polythiol-functionalized silica particles by thermally and photo-initiated radical addition reactions using poly(3-mercaptopropyl)methylsiloxane (PMPMS) as sulfhydryl group-rich surface modification reagent. Prior to surface modification with PMPMS, the silica was vinylized with vinyl trimethoxysilane. Finally, the usefulness of the thiolated silica particles was demonstrated by their further modification for various HPLC applications such as argentation chromatography and chiral separations.
View Article and Find Full Text PDFThe big effect of a small change: formation of CuO nanoparticles instead of covalently bound Cu(ii) over functionalized mesoporous silica and its impact on catalytic efficiency.
Dalton Trans
August 2020
Integrated Science Education and Research Centre, Siksha Bhavana, Visva-Bharati University, Santiniketan 731 235, India.
Two different heterogeneous catalysts, one with Cu(ii) covalently bonded to functionalized mesoporous silica (FMS-Cu(II)) and another with CuO nanoparticles immobilized over the same silica (FMS-CuO-np), have been synthesized by a common route but with a minor alteration in the sequence of addition of reagents. It is interesting to find that by merely changing the order of the addition of reagents Cu(ii) can be incorporated into the framework in two different forms. In one case Cu(ii) binds to the N and O donor centers present in the functionalized material whereas in the other case CuO nanoparticles are generated in situ.
View Article and Find Full Text PDFSynthesis, in vitro and in silico evaluation of novel trans-stilbene analogues as potential COX-2 inhibitors.
Bioorg Med Chem
January 2018
Poznan University of Medical Sciences, Department of Toxicology, 30 Dojazd Street, 60-631 Poznań, Poland. Electronic address:
25 new trans-stilbene and trans-stilbazole derivatives were investigated using in vitro and in silico techniques. The selectivity and potency of the compounds were assessed using commercial ELISA test. The obtained results were incorporated into 2D QSAR assay.
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