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Showing 1-30 of 40 results for "C112402" within Papers
Lin Du et al.
Journal of natural products, 75(10), 1819-1823 (2012-10-11)
An uncommon 2,5-diarylcyclopentenone compound, preussidone (1), and a new biphenyl compound, 1',5-dimethoxy-3,5'-dimethyl-2,3'-oxybiphenyl-1,2'-diol (4), together with two known biphenyl compounds, 5-methoxy-3,5'-dimethyl-2,3'-oxybiphenyl-1,1',2'-triol (2) and cyperin (3), were obtained from a Preussia typharum isolate that was procured using a panel of unconventional media
Qianli Zou et al.
Journal of medicinal chemistry, 58(20), 7949-7958 (2015-09-24)
A series of bis(arylidene)cycloalkanone photosensitizers modified by polyethylene glycol (PEG) have been studied for two-photon excited photodynamic therapy (2PE-PDT). As compared with their prototype compounds, these PEGylated photosensitizers show enhanced water solubilities while their photophysical and photochemical properties, including linear
Katherine Margulis et al.
Journal of colloid and interface science, 434, 65-70 (2014-08-30)
Nanometric particles of a model hydrophobic substance curcumin were prepared by a novel method, namely, flash nanoprecipitation from a coarse oil-in-water emulsion. The method employs turbulent co-mixing of water with curcumin-loaded emulsion using manually-operated confined impingement jets mixer. A clear
Suzhou Li et al.
Journal of chromatography. A, 1218(25), 3876-3889 (2011-05-21)
This paper presents new multistage optimal startup and shutdown strategies for simulated moving bed (SMB) chromatographic processes. The proposed concept allows to adjust transient operating conditions stage-wise, and provides capability to improve transient performance and to fulfill product quality specifications
Piotr Neumann et al.
Plant physiology, 160(3), 1251-1266 (2012-09-19)
In plants, oxylipins regulate developmental processes and defense responses. The first specific step in the biosynthesis of the cyclopentanone class of oxylipins is catalyzed by allene oxide cyclase (AOC) that forms cis(+)-12-oxo-phytodienoic acid. The moss Physcomitrella patens has two AOCs
Detoxification without intoxication: herbicide safeners activate plant defense gene expression.
Dean E Riechers et al.
Plant physiology, 153(1), 3-13 (2010-03-20)
Nolan K Maier et al.
Journal of immunology (Baltimore, Md. : 1950), 194(6), 2776-2785 (2015-02-15)
Inflammasomes are cytosolic protein complexes that respond to diverse danger signals by activating caspase-1. The sensor components of the inflammasome, often proteins of the nucleotide-binding oligomerization domain-like receptor (NLR) family, detect stress, danger stimuli, and pathogen-associated molecular patterns. We report
Jennifer A Dabrowski et al.
Organic letters, 12(16), 3598-3601 (2010-07-31)
Divergent reactivity is uncovered in the homologation of arylcyclobutanones with trimethylsilyldiazomethane. With Sc(OTf)(3) as catalyst, enolsilanes are obtained with a high preference for methylene migration. By contrast, Sc(hfac)(3) gives beta-ketosilanes with both regio- and diastereocontrol. Each adduct affords the cyclopentanone
Jurij Jakobi et al.
Langmuir : the ACS journal of surfaces and colloids, 26(10), 6892-6897 (2010-04-17)
The generation of nonoxidized magnetic alloy nanoparticles is still a challenge using conventional chemical reduction methods. However, because these nanoparticles are currently attracting much attention, alternative methods are required. In this context, the applicability of femtosecond laser ablation, which has
Yuxia Zhao et al.
Organic & biomolecular chemistry, 9(11), 4168-4175 (2011-04-16)
A series of polyethylene glycol-functionalized benzylidene cyclopentanone dyes with varying lipid/water partition coefficients were synthesized in high yields by a simple process. Detailed characterization and systematic studies of these molecules, including linear and nonlinear photophysical properties, reactive oxygen yields, and
Stephen Hanessian et al.
The Journal of organic chemistry, 77(21), 9458-9472 (2012-10-23)
This article describes synthetic studies that culminated in the first total synthesis of pactamycin and pactamycate and, in parallel, the two known congeners, de-6-MSA-pactamycin and de-6-MSA-pactamycate, lacking the 6-methylsalicylyl moiety. Starting with L-threonine as a chiron, a series of stereocontrolled
Baeyer-Villiger-oxidation of cyclopentanone with aqueous hydrogen peroxide by acid heterogeneous catalysis.
Fischer J and Holderich WF.
Applied Catalysis A: General, 180(1), 435-443 (1999)
Giga-pixel fluorescent imaging over an ultra-large field-of-view using a flatbed scanner.
Gorocs Z, et al.
Lab on a chip, 13(22), 4460-4466 (2013)
Cyclopentanone as a Cation-Stabilizing Electron-Pair Donor in the Calcium-Catalyzed Intermolecular Carbohydroxylation of Alkynes.
Stopka T and Niggemann M.
Organic Letters, 17(6), 1437-1440 (2015)
Hui Ming Ge et al.
Journal of the American Chemical Society, 134(30), 12323-12325 (2012-07-18)
The first total synthesis of (-)-lannotinidine B, a unique tetracyclic constitutent of Lycopodium annotinum, has been accomplished in 10 steps with 23% overall yield. The completed short and efficient synthesis is characterized with three highly chemo- and/or stereoselective reductive-amination steps
Fulong Li et al.
The Journal of organic chemistry, 76(8), 2820-2827 (2011-03-11)
To turn side products into major products, a novel strategy to access biologically active 4-aminocyclopent-2-enones was developed. These compounds were originally identified as side products but became major products when 3,5-dimethylpyran-3,4-diol 7a was used as the substrate and 30% InBr(3)
Jing Li et al.
Bioorganic & medicinal chemistry letters, 21(1), 130-132 (2010-12-15)
The structure of exo-methylene cyclopentanone, which exists in nature tetracyclic diterpenoids products, has been proved to be an innate group for the treatment of cancer and inflammation. In this letter, four different scaffolds of tetracyclic diterpenoids including the structure exo-methylene
Paul C Trippier et al.
Bioorganic & medicinal chemistry letters, 22(21), 6647-6650 (2012-10-02)
Amyotrophic lateral sclerosis (ALS) is a debilitating and fatal neurodegenerative disease. Although the cause remains unknown, misfolded protein aggregates are seen in neurons of sporadic ALS patients, and familial ALS mutations, including mutations in superoxide dismutase 1 (SOD1), produce proteins
Ring Puckering in Five-Membered Rings. III. The Microwave Spectrum, Dipole Moment, and Structure of Cyclopentanone.
Kim H and Gwinn WD.
J. Chem. Phys. , 51(5), 181519-181519 (1969)
Pragya Verma et al.
The Journal of organic chemistry, 76(14), 5606-5613 (2011-06-02)
The density functional theory investigation on the mechanism of NHC-catalyzed cycloannulation reaction of the homoenolate derived from butenal with pentenone is studied. The M06-2X/6-31+G** and B3LYP/6-31+G** levels of theory, including the effect of continuum solvation in dichloromethane and tetrahydrofuran, are
Kamal H Bouhadir et al.
Molecules (Basel, Switzerland), 17(1), 1-14 (2011-12-24)
We report the synthesis and characterization of a variety of trans-3,4-substituted cyclopentanones and the corresponding tosylhydrazone derivatives starting with diethyl fumarate. Protection of the keto group followed by selective monohydrolysis of esters was achieved, resulting in cyclopentanones with different substituents
Na Lin et al.
Physical chemistry chemical physics : PCCP, 14(10), 3669-3680 (2012-02-09)
We present a theoretical study of vibrationally resolved circular dichroism spectra, both in the adiabatic and non-adiabatic frameworks, with a full account of Franck-Condon and Herzberg-Teller vibrational contributions for the former. Model calculations have been performed on 2(R)-deuteriocyclopentanone, whose chirality
Jinqing Zhou et al.
Organic & biomolecular chemistry, 10(21), 4179-4185 (2012-05-02)
In the current study, a convenient and simple way is presented to synthesize a novel type of supported heterogeneous organocatalyst in 21-81% yield by the copolymerization of 9-amino-9-deoxy-epi-cinchonine organocatalyst with acrylonitrile using AIBN as radical initiator. The chemical compositions (x/y)
Jun-ichi Matsuo et al.
Organic letters, 12(17), 3960-3962 (2010-08-10)
Treatment of 3,3-dialkylcyclobutanones with titanium(IV) chloride in the presence of aldehyde gave beta'-chloro-beta-hydroxy ketones in high yields. It was speculated that ring cleavage of the cyclobutanone ring with titanium(IV) chloride gave trichlorotitanium enolate having a tertiary alkyl chloride moiety and
Nataša Beranič et al.
Chemico-biological interactions, 202(1-3), 204-209 (2012-12-25)
The imbalance in expression of the human aldo-keto reductases AKR1C1-AKR1C3 is related to different hormone dependent and independent cancers and some other diseases. The AKR1C1-3 enzymes thus represent emerging targets for the development of new drugs. Currently, various enzymatic assays
Søren V Fischer et al.
Beilstein journal of nanotechnology, 6, 1661-1665 (2015-10-02)
Nanocomposite materials containing metal nanoparticles are of considerable interest in photonics and optoelectronics applications. However, device fabrication of such materials always encounters the challenge of incorporation of preformed nanoparticles into photoresist materials. As a solution to this problem, an easy
Marta Goretti et al.
Bioresource technology, 102(5), 3993-3998 (2011-01-15)
The bioreduction of α,β-unsaturated ketones (ketoisophorone, 2-methyl- and 3-methyl-cyclopentenone) and aldehydes [(S)-(-)-perillaldehyde and α-methyl-cinnamaldehyde] by 23 "non-conventional" yeasts (NCYs) belonging to 21 species of the genera Candida, Cryptococcus, Debaryomyces, Hanseniaspora, Kazachstania, Kluyveromyces, Lindnera, Nakaseomyces, Vanderwaltozyma, and Wickerhamomyces was reported. The
Antibacterial and antioxidant activity evaluation of novel symmetrical and unsymmetrical C5-curcuminoids.
Manohar S, et al.
Indian Journal of Chemistry, 54, 1235-1246 (2015)
Eun Jin Hong et al.
Fungal biology, 119(11), 973-983 (2015-10-16)
To explore novel bioactive compounds produced via activation of secondary metabolite (SM) gene clusters, we overexpressed an ortholog of laeA, a gene that encodes a global positive regulator of secondary metabolism in Aspergillus fumisynnematus F746. Overexpression of the laeA gene
Efficient and selective hydrogenation of biomass-derived furfural to cyclopentanone using Ru catalysts.
Fang R, et al.
Green Chemistry, 17(8), 4183-4188 (2015)
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