Results 51 to 60 of about 4,664 (240)

Desenvolvimento de abordagem objetivando a síntese da 3-desidroxi-4-metoxi-tubastrina Development of an approach for the synthesis of 3-dehydroxy-4methoxy tubastrine

open access: yesQuímica Nova, 2007
We report the synthesis of amino(2-hydroxy-2-(4-methoxyphenyl)ethylamino)methaniminium (14) as a direct precursor of a tubastrine derivative (3-dehydroxy-4-methoxytubastrine). The synthetic steps involved functional group interconversions starting from 1-
Kelly de Oliveira Santos   +2 more
doaj   +1 more source

Lanthanum Carbonate Nanosheets Based Colloidal Hydrogel for Modulating Innate & Adaptive Tumor Immunotherapy by Augmented Cellular Pyroptosis

open access: yesAdvanced Science, EarlyView.
The Gela/decitabine/La2(CO3)3 colloidal (GDLC) hydrogel developed here could reverse the epigenetic silencing of the GSDME gene by the synergistic interaction between DAC and La3+, while concurrently activating caspase‐3, thus facilitating pyroptosis induction under the tumor microenvironment.
Yang Hong   +6 more
wiley   +1 more source

Transesterification of vegetable oils: a review

open access: yesJournal of the Brazilian Chemical Society, 1998
The transesterification of vegetable oils with methanol as well as the main uses of the fatty acid methyl esters are reviewed. The general aspects of this process and the applicability of different types of catalysts (acids, alkaline metal hydroxides ...
Schuchardt Ulf   +2 more
doaj  

Dry‑Contact Trimming for All‑Perovskite Tandem Solar Cells via Solid‑Solution Homogenization

open access: yesAdvanced Energy Materials, EarlyView.
Narrow‐bandgap Sn–Pb perovskites are promising bottom absorbers for all‐perovskite tandems but suffer from Sn‐rich surfaces and depth‐dependent lattice/compositional inhomogeneity. Layered‐perovskite‐assisted dry‐contact trimming removes Sn‐rich surface species and reconfigures the Sn–Pb absorber, enabling efficient charge collection, reduced voltage ...
Woocheol Han   +10 more
wiley   +1 more source

Mitochondria targeting molecular transporters: synthesis, lipophilic effect, and ionic complex

open access: yesDrug Delivery, 2022
As mitochondria are potential therapeutic targeting sites for the treatment of human diseases, delivering cytotoxic drugs, antioxidants, and imaging molecules to mitochondria can provide new therapeutic opportunities.
Akula S. N. Murthy   +6 more
doaj   +1 more source

Distribution of Big Tau Isoforms in the Human Central and Peripheral Nervous System

open access: yesAnnals of Neurology, EarlyView.
Objective Tau is widely studied in neurodegeneration, yet most work has focused on canonical brain tau isoforms. A longer isoform, “big tau,” produced by inclusion of exon 4a, is expressed in the peripheral nervous system (PNS) and central nervous system (CNS) regions.
Rama Krishna Koppisetti   +17 more
wiley   +1 more source

Antitumor, Antioxidant and Antimicrobial Studies of Substituted Pyridylguanidines

open access: yesMolecules, 2013
A series of N-pivaloyl-N′-(alkyl/aryl)-N′′-pyridylguanidine of general formula C4H9CONHC(NR1R2)NPy have been synthesized and characterized using elemental analysis, FT-IR, multinuclear NMR spectroscopy, and in the case of compounds 7 and 11, by single ...
Boris Vabre   +7 more
doaj   +1 more source

Redox‐Active Guanidines

open access: yesChemElectroChem
Redox‐active guanidines represent compounds with guanidino groups that are stable in at least two different redox states. This unique class of molecules is of significant interest for a variety of research areas, including coordination chemistry ...
Hans‐Jörg Himmel
doaj   +1 more source

Metal nanostructure‐coupled label‐free localized surface plasmon resonance biosensors for rapid and sensitive disease diagnosis

open access: yesBMEMat, EarlyView.
LSPR biosensing enables rapid, sensitive, and low‐sample‐volume detection of biomarkers, with broad applications in diagnosing cancer, infectious, and chronic diseases. Advances in nanostructure design, micro/nanofabrication, and microfluidic integration have expanded the potential of LSPR sensors in biomedical diagnostics.
Zhaoxin Geng   +4 more
wiley   +1 more source

Chiral Guanidines

open access: yesJournal of Synthetic Organic Chemistry, Japan, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Ishikawa, Tsutomu, Isobe, Toshio
openaire   +2 more sources

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