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Adam F Lee et al.
Dalton transactions (Cambridge, England : 2003), 39(43), 10473-10482 (2010-10-05)
Size-controlled, catalytically active PVP-stabilised Pd nanoparticles have been studied by operando liquid phase XAS during the Suzuki cross-coupling of iodonanisole and phenylboronic acid in MeOH-toluene using KOMe base. XAS reveals nanoparticles are stable to metal leaching throughout the reaction, with
Irit Katash et al.
Langmuir : the ACS journal of surfaces and colloids, 26(3), 1765-1775 (2010-01-06)
The sulfonation of phenyl ether decorated self-assembled monolayers (SAMs) was studied with an eye toward creating surfaces with a particularly high negative charge density based on a close-packed array of phenyl rings with more than one sulfonic acid group per
Wen Luo et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 47(7), 916-921 (2012-09-21)
A series of tacrine-methoxybenzene hybrids (5a-5i) were designed, synthesized and evaluated as inhibitors of cholinesterases (ChEs). All the compounds had better ChEs inhibitory activities than tacrine with IC50 values at the nanomolar range. Compound 5h exhibited the strongest inhibition on
Xiao-Lan Zeng et al.
Chemosphere, 86(6), 619-625 (2011-11-26)
The possible molecular geometries of 134 halogenated methyl-phenyl ethers were optimized at B3LYP/6-31G(*) level with Gaussian 98 program. The calculated structural parameters were taken as theoretical descriptors to establish two new novel QSPR models for predicting aqueous solubility (-lgS(w,l)) and
Shouhui Zhang et al.
The Journal of organic chemistry, 75(19), 6732-6735 (2010-09-09)
A CuI-catalyzed direct access to sulfides from disulfides via C-H bond cleavage of di- or trimethoxybenzene is described. The procedure utilizes O(2) as a clean and cheap oxidant. Direct selenation of the C-H bond also took place under this procedure.
Tiina J Kauppila et al.
Journal of the American Society for Mass Spectrometry, 25(11), 1870-1881 (2014-09-25)
A novel, gas-tight API interface for gas chromatography-mass spectrometry was used to study the ionization mechanism in direct and dopant-assisted atmospheric pressure photoionization (APPI) and atmospheric pressure laser ionization (APLI). Eight analytes (ethylbenzene, bromobenzene, naphthalene, anthracene, benzaldehyde, pyridine, quinolone, and
John T Wilson et al.
The AAPS journal, 17(2), 358-369 (2014-12-17)
Protein-based vaccines offer a number of important advantages over organism-based vaccines but generally elicit poor CD8(+) T cell responses. We have previously demonstrated that pH-responsive, endosomolytic polymers can enhance protein antigen delivery to major histocompatibility complex class I (MHC-I) antigen
Alfonso Pérez-Garrido et al.
Bioorganic & medicinal chemistry, 17(2), 896-904 (2008-12-06)
This paper reports a QSAR study for predicting the complexation of a large and heterogeneous variety of substances (233 organic compounds) with beta-cyclodextrins (beta-CDs). Several different theoretical molecular descriptors, calculated solely from the molecular structure of the compounds under investigation
B Frohm et al.
Soft matter, 11(2), 414-421 (2014-11-20)
The peptide GSFSIQYTYHV derived from human semenogelin I forms a transparent hydrogel through spontaneous self-assembly in water at neutral pH. Linear rheology measurements demonstrate that the gel shows a dominating elastic response over a large frequency interval. CD, fluorescence and
Li Xing et al.
ChemMedChem, 10(4), 715-726 (2015-03-11)
Anisole and fluoroanisoles display distinct conformational preferences, as evident from a survey of their crystal structures. In addition to altering the free ligand conformation, various degrees of fluorination have a strong impact on physicochemical and pharmacokinetic properties. Analysis of anisole
Lijuan Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 96, 578-585 (2012-08-07)
The structure and vibrations of 3,5-difluoroanisole (3,5-DFA) in the first electronically excited (S(1)) state were studied by mass-analyzed resonant two-photon ionization (R2PI) technique as well as the quantum chemical calculations. The ab initio and density functional theory (DFT) calculations reveal
Adolfsson H, et al.
Science of Synthesis: Houben-Weyl Methods of Molecular Transformations, 37 (2014)
Benjamin M Swarts et al.
Journal of the American Chemical Society, 132(19), 6648-6650 (2010-04-29)
A GPI anchor bearing unsaturated fatty acid lipid chains (1) was synthesized by a highly convergent strategy employing the para-methoxybenzyl group for permanent hydroxyl protection. The final global deprotection was achieved by an efficient three-step, one-pot procedure to give an
Guangwei Si et al.
Neuron, 101(5), 950-962 (2019-01-27)
Odor perception allows animals to distinguish odors, recognize the same odor across concentrations, and determine concentration changes. How the activity patterns of primary olfactory receptor neurons (ORNs), at the individual and population levels, facilitate distinguishing these functions remains poorly understood. Here, we
Rachel S Leisso et al.
Physiologia plantarum, 153(2), 204-220 (2014-06-20)
'Soggy breakdown' (SB) is an internal flesh disorder of 'Honeycrisp' apple (Malus × domestica Borkh.) fruit that occurs during low temperature storage. The disorder is a chilling injury (CI) in which visible symptoms typically appear after several weeks of storage
Gulsen Tel et al.
Pharmaceutical biology, 53(6), 824-830 (2015-02-28)
Recently, mushrooms are interesting natural products to be investigated due to exhibiting various bioactivities. This study determines the antioxidant and anticholinesterase activities of various extracts of five wild mushroom species. In addition, the total bioactive contents, namely, ascorbic acid, β-carotene
Bram Baert et al.
Bioorganic & medicinal chemistry, 15(22), 6943-6955 (2007-09-11)
A set of 116 structurally very diverse compounds, mainly drugs, was characterized by 1630 molecular descriptors. The biological property modelled in this study was the transdermal permeability coefficient logK(p). The main objective was to find a limited set of suitable
Wenqing Cai et al.
Free radical research, 45(11-12), 1379-1387 (2011-10-07)
Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a naturally occurring polyphenol widely distributed in food and dietary plants. This phytochemical has been intensively studied as an efficient antioxidant and anticancer agent, and a variety of substituted stilbenes have been developed in order to improve
Natalia Campillo et al.
Journal of chromatography. A, 1217(47), 7323-7330 (2010-10-20)
Dispersive liquid-liquid microextraction (DLLME) coupled with gas chromatography-mass spectrometry (GC-MS) was evaluated for the simultaneous determination of five chlorophenols and seven haloanisoles in wines and cork stoppers. Parameters, such as the nature and volume of the extracting and disperser solvents
M Branca et al.
Faraday discussions, 175, 97-111 (2014-10-02)
A variety of imaging technologies are now routinely used in the medical field, their use being continuously enlarged through the development of contrast agents. Recently nanoparticles (NPs) proved efficient to improve imaging in vivo by increasing contrast and targeting capabilities.
Anu Vaikkinen et al.
Analytical chemistry, 84(3), 1630-1636 (2012-01-17)
In this paper we introduce laser ablation atmospheric pressure photoionization (LAAPPI), a novel atmospheric pressure ion source for mass spectrometry. In LAAPPI the analytes are ablated from water-rich solid samples or from aqueous solutions with an infrared (IR) laser running
Kathrin Dennerlein et al.
Toxicology in vitro : an international journal published in association with BIBRA, 27(2), 708-713 (2012-12-12)
According to international guidelines skin penetration experiments can be carried out using freshly excised or frozen stored skin. However, this recommendation refers to data obtained in experiments with human cadaver skin. In our study, the percutaneous penetration of the occupationally
"Hyperthermal surface ionization in a time-of-flight mass spectrometer"
Weickhardt C and Draack L
Eur. J. Mass Spectrom., 6(4), 319- 323 (2000)
Athanasios I Moukas et al.
Journal of mass spectrometry : JMS, 49(11), 1096-1107 (2014-11-15)
This study presents the atmospheric pressure photoionization (APPI) of high-chlorinated (five or more chlorine atoms) polychlorinated biphenyls (PCBs) using toluene as dopant, after liquid chromatographic separation. Mass spectra of PCB 101, 118, 138, 153, 180, 199, 206 and 209 were
"A silica-based monolithic column in capillary HPLC and CEC coupled with ESI-MS or electrospray-atmospheric-pressure laser ionization-MS"
Droste S, et al.
Electrophoresis, 26(21), 4098-4103 (2005)
Laszlo Hollosi et al.
Journal of chromatography. A, 1218(1), 23-31 (2010-12-03)
European food legislation defines a set of 16 polycyclic aromatic hydrocarbons (PAHs) as of high concern for human health. The EU set contains structurally very similar PAHs with ring numbers between 4 and 6, and so raises some separation aspects
Paulina Maksym-Bębenek et al.
Macromolecular bioscience, 15(11), 1616-1624 (2015-07-23)
The core-shell micelles in aqueous solutions were prepared at low CAC values (<0.1 mg · mL(-1) ) from amphiphilic graft copolymers consisting of poly(methyl methacrylate) backbone (120-165 units) with loosely grafted (17-40%) hydroxyl-capped PEG (9 vs 6 units in side chain) for drug
Anita Toulmin et al.
Journal of medicinal chemistry, 51(13), 3720-3730 (2008-06-19)
Partition coefficients were measured for 47 compounds in the hexadecane/water ( P hxd) and 1-octanol/water ( P oct) systems. Some types of hydrogen bond acceptor presented by these compounds to the partitioning systems are not well represented in the literature
Soo Min Cho et al.
Scientific reports, 4, 6777-6777 (2014-10-28)
Amyloid-β (Aβ) is one of the few neuropathological biomarkers associated with transporters of the blood-brain barrier (BBB). Despite the well-characterized clinical indication of decreasing Aβ levels in the cerebrospinal fluid (CSF) during the development of Alzheimer's disease (AD), the link
Yushan Chen et al.
NMR in biomedicine, 25(9), 1088-1094 (2012-02-01)
A new pulse sequence based on intermolecular double-quantum coherences was proposed to obtain one-dimensional high-resolution liquid NMR spectra in inhomogeneous magnetic fields via Hadamard encoding. In contrast with the conventional intermolecular multiple-quantum coherences method with a two-dimensional acquisition to obtain
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