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Andrey G Pradko et al.
Steroids, 97, 78-86 (2014-09-10)
Starting from (22R,23R)-2α,3α,22,23,26-pentahydroxy-5α-cholestan-6-one 26-hemisuccinate, conjugates of 28-norcastasterone with horse radish peroxidase and bovine serum albumin were prepared. The latter conjugate was injected into rabbits; produced polyclonal antibodies were used to quantitate 6-keto-brassinosteroids. The newly developed analytical system was used in
Direct functionalization of tetrahydrofuran and 1,4-dioxane: nickel-catalyzed oxidative C(sp3)-H arylation.
Dong Liu et al.
Angewandte Chemie (International ed. in English), 52(16), 4453-4456 (2013-03-21)
Carlos E Agudelo-Morales et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 13(18), 4195-4201 (2012-10-24)
The quenching of pyrene and 1-methylpyrene fluorescence by nitroanilines (NAs), such as 2-, 3-, and 4-nitroaniline (2-NA, 3-NA, and 4-NA, respectively), 4-methyl-3-nitroaniline (4-M-3-NA), 2-methyl-4-nitroaniline (2-M-4-NA), and 4-methyl-3,5-dinitroaniline (4-M-3,5-DNA), are studied in toluene and 1,4-dioxane. Steady-state fluorescence data show the higher
Rodrigo Abonia et al.
European journal of medicinal chemistry, 57, 29-40 (2012-10-10)
Novel quinoline-2-one based chalcones were synthesized from a Claisen-Schmidt condensation by using the couple KOH/1,4-dioxane as reaction medium. A relatively stable aldol was isolated and identified as the intermediate species in the formation of the target chalcones. Nine of the
Da Huang et al.
Biomaterials, 52, 417-425 (2015-03-31)
Bone tuberculosis (TB) is one of the most common extrapulmonary TB. Effective integration of chemotherapy and bone regeneration is an optimal solution for bone TB therapy. Herein, we produce a composite scaffold drug delivery system fabricated with an isoniazid conjugated
Hui-Ling Che et al.
International journal of analytical chemistry, 2015, 357609-357609 (2015-11-26)
Quantification of tocotrienols in human plasma is critical when the attention towards tocotrienols on its distinctive properties is arising. We aim to develop a simple and practical normal-phase high performance liquid chromatography method to quantify the amount of four tocotrienol
John R Horsley et al.
Journal of the American Chemical Society, 136(35), 12479-12488 (2014-08-15)
Electrochemical studies are reported on a series of peptides constrained into either a 310-helix (1-6) or β-strand (7-9) conformation, with variable numbers of electron rich alkene containing side chains. Peptides (1 and 2) and (7 and 8) are further constrained
Gui-Peng Tian et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 70(12), 1934-1940 (2014-12-19)
1,4-Dioxane is a probable human carcinogenic and refractory substance that is widely detected in aquatic environments. Traditional wastewater treatment processes, including activated sludge, cannot remove 1,4-dioxane. Removing 1,4-dioxane with a reaction kinetic constant of 0.32 L/(mol·s) by using ozone, a
R Dario Arrua et al.
Journal of chromatography. A, 1273, 26-33 (2013-01-01)
Rigid monolithic cryostructures were prepared in capillary format at sub-zero temperatures and used successfully in the separation of proteins by hydrophobic interaction chromatography (HIC). The polymerization mixture consisted of poly(ethyleneglycol) diacrylate (PEGDA) M(n)∼258 as the single monomer, a mixture of
Urara Hasegawa et al.
Macromolecular bioscience, 15(11), 1512-1522 (2015-06-24)
Prodrug micelles carrying 5-(4-hydroxyphenyl)-3H-1,2-dithiole-3-thione (ADT-OH), a compound possessing chemopreventive properties, are prepared from amphiphilic block copolymers linking ADT-OH via an ester bond using glycine (PAM-PGlyADT) and isoleucine linkers (PAM-PIleADT). The release of ADT-OH from the PAM-PIleADT micelles is much slower
Tatsuya Nishiyama et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(48), 17152-17157 (2014-11-21)
Organocatalysts, low-molecular mass organic compounds composed of nonmetallic elements, are often used in organic synthesis, but there have been no reports of organocatalysts of biological origin that function in vivo. Here, we report that actinorhodin (ACT), a natural product derived
B Thanuja et al.
Ultrasonics sonochemistry, 19(6), 1213-1220 (2012-04-14)
Density (ρ), ultrasonic velocity (U), for the binary mixtures of 4-methoxy benzoin (4MB) with ethanol, chloroform, acetonitrile, benzene, and di-oxane were measured at 298K. The solute-solvent interactions and the effect of the polarity of the solvent on the type of
V K Shormanov et al.
Sudebno-meditsinskaia ekspertiza, 55(3), 37-41 (2012-08-11)
The optimal conditions for the isolation of esfenvalerate from the biological specimens have been determined. It was shown that this compound can be separated from the endogenous component of a biological material by means of liquid-liquid extraction and chromatography on
Johnathon Yau et al.
Beilstein journal of organic chemistry, 11, 2171-2178 (2015-12-15)
Two new nickel catalysts have been prepared using a convenient procedure where nickelocene, the NHC·HBF4 salts, and [Et4N]Cl were heated in THF using microwave irradiation. The resulting [NiCl(Cp)(NHC)] complexes are air- and moisture stable in the solid state, and represent
Diana Guzman-Villanueva et al.
International journal of pharmaceutics, 473(1-2), 579-590 (2014-07-27)
The RNA interference (RNAi) constitutes a conservative mechanism in eukaryotic cells that induces silencing of target genes. In mammalians, the RNAi is triggered by siRNA (small interfering RNA) molecules. Due to its potential in silencing specific genes, the siRNA has
Elisabeth Eckert et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 935, 80-84 (2013-08-21)
An analytical method for the determination of β-hydroxyethoxyacetic acid (HEAA), the main urinary metabolite of 1,4-dioxane was developed and validated. The presented method involves liquid-liquid extraction of HEAA from the urine samples, followed by silylation and subsequent analytical separation and
Abdullah M Asiri et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 95, 679-684 (2012-05-18)
The absorption and fluorescence characteristics of 4-(p-N,N-dimethyl-aminophenylmethylene)-2-phenyl-5-oxazolone (DPO) have been investigated in different solvents. DPO dye exhibits a large red shift in both absorption and emission spectra as solvent polarity increases, indicating a large change in the dipole moment of
Suha Altarawneh et al.
Environmental science & technology, 49(7), 4715-4723 (2015-03-03)
Benzimidazole-linked polymers (BILPs) are emerging candidates for gas storage and separation applications; however, their current synthetic methods offer limited control over textural properties which are vital for their multifaceted use. In this study, we investigate the impact of acid-catalyzed formation
Yimu Zhao et al.
Advanced healthcare materials, 8(5), e1801187-e1801187 (2019-02-10)
Due to escalating drug developmental costs and limitations of cardiotoxicity screening, there is an urgent need to develop robust in vitro 3D tissue culture platforms that can both facilitate the culture of human cardiac tissues and provide noninvasive functional readouts
Junichi Kasuya et al.
Journal of tissue engineering and regenerative medicine, 9(3), 247-256 (2012-10-23)
In liver sinusoids, hepatic stellate cells (HSCs) locate the outer surface of microvessels to form a functional unit with endothelia and hepatocytes. To reconstruct functional liver tissue in vitro, formation of the HSC-incorporated sinusoidal structure is essential. We previously demonstrated
Katsuyuki Yamanaka et al.
Dental materials journal, 34(1), 78-85 (2015-03-10)
An appropriate physical support provided by scaffolds creates a supportive environment that directs proliferation and differentiation of stem cells. However, it is difficult to homogenously inoculate stem cells into the inner part of scaffolds at high cell densities. In this
Noriko Harada et al.
Biomaterials, 35(27), 7800-7810 (2014-06-24)
Mesenchymal stem cells (MSCs) are multipotent cells capable of proliferating and differentiating into several lineages. In regenerative medicine, their potential as a resource for tissue-replacement therapy is receiving much attention. However, transplanting MSCs to repair larger bone defects in animal
F Ramazani et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 95(Pt B), 368-377 (2015-02-24)
Sunitinib is a multi-targeted receptor tyrosine kinase (RTK) inhibitor that blocks several angiogenesis related pathways. The aim of this study was to develop sunitinib-loaded polymeric microspheres that can be used as intravitreal formulation for the treatment of ocular diseases. A
Susanne Kirchhof et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 96, 217-225 (2015-08-09)
Eight-armed PEG was functionalized with furyl and maleimide groups (8armPEG20k-Fur and 8armPEG20k-Mal); degradable hydrogels were obtained by cross-linking via Diels-Alder chemistry. To increase the stability to degradation, the macromonomers were modified by introducing a hydrophobic 6-aminohexanoic acid spacer between PEG
Małgorzata Sztanke et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 68, 114-126 (2014-12-22)
The chromatographic behaviour and significant lipophilicity/hydrophobicity indices (log k(w), S, φ(0)) are presented for 21 biologically active fused 1,2,4-triazinones based on the linear relationship: log k = log k(w)-Sφ established for the retention on LC-18 HPLC column, using as mobile
Daniel Gerrity et al.
Water research, 46(19), 6257-6272 (2012-10-16)
The performance of ozonation in wastewater depends on water quality and the ability to form hydroxyl radicals (·OH) to meet disinfection or contaminant transformation objectives. Since there are no on-line methods to assess ozone and ·OH exposure in wastewater, many
1,4-Dioxane.
IARC monographs on the evaluation of carcinogenic risks to humans, 71 Pt 2, 589-602 (1999-09-07)
Jatinder Kumar et al.
PloS one, 9(6), e98696-e98696 (2014-06-18)
Fourteen saxicolous lichens from trans-Himalayan Ladakh region were identified by morpho-anatomical and chemical characteristics. The n-hexane, methanol and water extracts of the lichens were evaluated for their antioxidant capacities. The lichen extracts showing high antioxidant capacities and rich phenolic content
Catherine Bonnier et al.
Molecules (Basel, Switzerland), 20(10), 18237-18245 (2015-10-13)
We are reporting the unexpected reaction between bromo-boron subphthalocyanine (Br-BsubPc) and THF, 1,4-dioxane or γ-butyrolactone that results in the ring opening of the solvent and its addition into the BsubPc moiety. Under heating, the endocyclic C-O bond of the solvent
Sobhi M Gomha et al.
Molecules (Basel, Switzerland), 17(8), 9335-9347 (2012-08-07)
Successful implementation of ultrasound irradiation for the rapid synthesis of a novel series of 3-[1-(4-substituted-5-(aryldiazenyl)thiazol-2-yl)hydrazono)ethyl]-2H-chromen-2-ones 5a-h, via reactions of 2-(1-(2-oxo-2H-chromen-3-yl)ethylidene) thiosemicarbazide (2) and the hydrazonoyl halides 3(4), was demonstrated. Also, a new series of 5-arylidene-2-(2-(1-(2-oxo-2H-chromen-3-yl)ethylidene)hydrazinyl)thiazol-4(5H)-ones 10a-d were synthesized from reaction
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