搜索范围
03273
应用筛选条件
关键词:'03273'
显示 1-30 #N/A 38 条结果 关于 "03273" 范围 论文
Pipas Saha et al.
Organic & biomolecular chemistry, 10(12), 2470-2481 (2012-02-22)
An efficient method for the synthesis of 2,3,5,6-tetrasubstituted tetrahydropyrans has been developed from the reaction of aldehydes and ethyl 2-(1-hydroxyalkyl/hydroxy(phenyl)methyl)-5-methylhex-4-enoate using (3,5)-oxonium-ene reaction promoted by boron trifluoride etherate in good yields under mild conditions.
V Vinod Kumar et al.
Analytica chimica acta, 842, 57-62 (2014-08-17)
Highly selective label free colorimetric sensor based on AgNPs stabilized by phenolic chelating ligand, N,N'-bis(2-hydroxybenzyl)-1,2-diaminobenzene (1), for NO(2-) anions has been developed. Addition of NO(2-) showed selective decolourisation of brownish yellow colour of 1-AgNPs with the detection limit of 10(-7)M.
Xianglin Shi et al.
The Journal of organic chemistry, 77(2), 1154-1160 (2011-12-17)
Mild reaction conditions for Petasis reactions of substituted salicylaldehydes with various amines and arylboronic acids in the presence of molecular sieves were developed. Molecular sieves (MS) significantly accelerated the reaction rates and drove the reactions to high conversions. The conditions
Vinicius Z Mota et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 99, 110-115 (2012-10-16)
The Schiff base N,N'-bis(salicylidene)-o-phenylenediamine (salophen) was prepared by the condensation of salicylaldehyde with o-phenylenediamine in ethanol solution. The compound was characterized by elemental analysis, infrared (IR), (1)H, (13)C and (1)H(15)N HMBC nuclear magnetic resonance (NMR) spectroscopic measurements, and also by
Biao Gu et al.
The Analyst, 140(8), 2778-2784 (2015-02-27)
A novel ratiometric fluorescent Hg(2+) detecting system was rationally developed based on the typical excited state intramolecular proton transfer (ESIPT) characteristic of the latent fluorophore, 2-(1-(p-tolyl)-1H-phenanthro[9,10-d]imidazol-2-yl)phenol (Pol) and the Hg(2+)-mediated cleavage of the vinyl group. The probe responds selectively to
Balaji D Barve et al.
Organic letters, 16(7), 1912-1915 (2014-03-19)
Iron catalyzed oxidative coupling of salicylaldehydes with cyclic ethers proceeded through the direct α-C-H functionalization of ethers, forming the corresponding acetals in moderate to excellent yields. This is the first example of iron catalyzed selective C-O bond formation in the
Walfrido Bispo Júnior et al.
Molecules (Basel, Switzerland), 16(8), 6902-6915 (2011-08-17)
Salicylaldehyde 2-chlorobenzoyl hydrazone (H(2)LASSBio-466), salicylaldehyde 4-chlorobenzoyl hydrazone (H(2)LASSBio-1064) and their complexes [Zn(LASSBio-466)H(2)O](2) (1) and [Zn(HLASSBio-1064)Cl](2) (2) were evaluated in animal models of peripheral and central nociception, and acute inflammation. All studied compounds significantly inhibited acetic acid-induced writhing response. Upon coordination
Eila Pelttari et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 66(11-12), 571-580 (2012-02-23)
Substituted salicylaldehydes are potent antibacterial and antifungal agents and may have chemotherapeutic potential. In the clinical setting, the minimal inhibitory concentration (MIC) as well as the minimal bactericidal and fungicidal concentrations (MBC and MFC, respectively) are of fundamental interest. Therefore
Gaosheng Yang et al.
Chemical communications (Cambridge, England), 48(47), 5880-5882 (2012-05-11)
A three-component cascade reaction of salicylaldehyde, malononitrile/cyanoacetate and nitromethane catalysed by chiral tertiary amino-thioureas was developed, which leads to the production of highly functionalized 2-amino-4H-chromenes in good yields with good to excellent enantioselectivities.
Junming Ho et al.
Journal of inorganic biochemistry, 119, 10-20 (2012-11-22)
A series of N,N-disubstituted salicylaldehyde semicarbazones (SSCs), HOC(6)H(4)CHN-NHCONR(2), and their rhenium(I) tricarbonyl complexes, [ReBr(CO)(3)(SSC)], have been synthesised and characterised by IR and (1)H NMR spectroscopy. Crystallographic analysis of the complex [ReBr(CO)(3)(H(2)Bu(2))] (H(2)Bu(2)=SSC where R=Bu(n)) showed that the SSC acts as
Rhodium(III)-catalyzed dehydrogenative Heck reaction of salicylaldehydes.
Zhuangzhi Shi et al.
Angewandte Chemie (International ed. in English), 51(32), 8092-8096 (2012-06-30)
Soleiman Hisaindee et al.
Journal of fluorescence, 22(2), 677-683 (2011-11-05)
Salicylaldehyde was found to have a high selectivity for zinc ions with simultaneous enhancement of fluorescence in aqueous buffer solution at optimum pH 8.5. The stoichiometry of the complex was determined to be 1:1 with a K(a) value of 3.4
Ziyad A Taha et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 81(1), 317-323 (2011-07-15)
Eight new lanthanide metal complexes [LnL(NO(3))(2)]NO(3) {Ln(III) = Nd, Dy, Sm, Pr, Gd, Tb, La and Er, L = bis-(salicyladehyde)-1,3-propylenediimine Schiff base ligand} were prepared. These complexes were characterized by elemental analysis, thermogravimetric analysis (TGA), molar conductivity measurements and spectral
Yinfeng Zhang et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(17), 6657-6662 (2013-04-10)
An efficient method has been developed for the salicylaldehyde ester-mediated ligation of unprotected peptides at serine (Ser) or threonine (Thr) residues. The utility of this peptide ligation approach has been demonstrated through the convergent syntheses of two therapeutic peptides--ovine-corticoliberin and
Eri Kamii et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 52(5), 276-280 (2011-12-28)
In this study, we evaluated the antibacterial activity of essential oil vapors against histamine-producing bacteria Morganella morganii NBRC3848 and Raultella planticola NBRC3317. We measured the minimum inhibitory dose (MID) of 14 essential oils towards these two strains. Allyl isothiocyanate (AIT)
Chao-Bin Xue et al.
Bioorganic & medicinal chemistry, 15(5), 2006-2015 (2007-01-30)
Phenoloxidase (PO), also known as tyrosinase, is a key enzyme in insect development, responsible for catalyzing the hydroxylation of tyrosine into o-diphenols and the oxidation of o-diphenols into o-quinones. Inhibition of PO may provide a basis for novel environmentally friendly
Yonghwang Ha et al.
Neuroscience research, 71(2), 168-177 (2011-07-26)
In this study, α-synuclein was treated in vitro with salicylaldehyde (SA), lysine (lys) and M(n+) (Cu(2+) or Zn(2+)) in various ratios. SA induced aggregation of α-syn in the ratio of 1:500 (α-syn:SA) after incubation (pH 7.4, PBS buffer, 16-24h). Free
Hirohiko Houjou et al.
The Journal of organic chemistry, 78(18), 9021-9031 (2013-08-27)
We synthesized two constitutionally isomeric bis(iminomethyl)-2,6-dihydroxynaphthalenes, namely, α,α-diimines 1 and β,β-diimines 2, which can be formally represented as fused salicylaldimines with resonance-assisted hydrogen-bonding sites. Spectroscopic data show that the OH/OH, NH/OH, and NH/NH forms of 1 were in equilibrium in
Kaizhou Xie et al.
Journal of chromatographic science, 50(7), 620-624 (2012-05-09)
A sensitive and robust method is presented for the simultaneous determination of amoxicillin (AMO) and ampicillin (AMP) in eggs by reversed-phase high-performance liquid chromatography with fluorescence detection (RP-HPLC-FLD). This method used a simple liquid-liquid extraction of the samples with acetonitrile
Meiling Liu et al.
Talanta, 100, 229-238 (2012-11-13)
Four new conjugated oligo-phenylene-ethynylenes derivatives, N-methyl-4-(4-acetylthiophenylethynyl)-1,8-naphthalimide (1), thioacetic acid S-[4-(4-aminophenyl-ethynyl)phenyl]ester (2), 4-methylthiophenylethynylbenzenamine (3), N-methyl-4-(4-methyl-thiophenyl-ethynyl)-1,8-naphthalimide (4), were synthesized by Sonogashira and Eglinton cross-coupling reactions. The structures of the four compounds were confirmed by (1)HNMR, (13)CNMR, MS and IR and their spectral
Sindhuja Bala Subramanian et al.
Carbohydrate polymers, 114, 170-178 (2014-09-30)
The conventional drug delivery system has serious limitations such as lack of target specificity, altered effects and diminished potency. These limitations can be overcome by using biocompatible polymer as an effective drug delivery system. In this study, bis-demethoxy curcumin analog
Raziyeh Akbarzadeh et al.
Dalton transactions (Cambridge, England : 2003), 43(44), 16745-16753 (2014-10-04)
A NiS2 nanostructure with a protective layer of Ni(2+) and SO4(2-) ions around it has been successfully synthesized using the Ni(II)-Salen (Salen = N,N'-bis(salicylidene)ethylenediamine) complex via a simple solvothermal approach in the presence of anhydrous sodium thiosulfate (Na2S2O3) as sulfur
Chandrasekaran Rajarajeswari et al.
Journal of inorganic biochemistry, 140, 255-268 (2014-09-10)
A series of copper(II) complexes of the types [Cu(L)(phen)](ClO4) 1-2, where HL is a tridentate ligand with two nitrogen and one oxygen donor atoms (2NO) such as 2-(2-(1H-benzimidazol-2-yl)ethyliminomethyl)phenol (HL1) and 2-(2-(1H-benzimidazol-2-yl)ethyl-imino)methyl)-4-methylphenol (HL2), phen is 1,10-phenanthroline and [Cu(L)(phen)](ClO4)23-6, where L is
Hua Wu et al.
Organic letters, 15(3), 460-463 (2013-01-15)
The gold(I)/chiral Brønsted acid relay catalysis enabled a highly stereoselective three-component reaction of salicylaldehydes, anilines, and alkynols to give aromatic spiroacetals in high yields and stereoselectivities.
Xianglin Shi et al.
The Journal of organic chemistry, 78(18), 9415-9423 (2013-08-27)
Binaphthol-catalyzed asymmetric Petasis reactions of salicylaldehydes with dibutyl vinylboronates and secondary amines in the presence of 4 Å molecular sieves (MS) afforded products with up to 99% ee in isolated yields of 39-94%. The 99% ee of the product indicated
Zhijun Zhang et al.
Dalton transactions (Cambridge, England : 2003), 41(4), 1252-1258 (2011-11-30)
A new dinuclear copper salicylaldehyde-glycine Schiff-base complex [Cu(2)(Sal-Gly)(2)(H(2)O)(2)] was synthesized and structurally characterized. [Cu(2)(Sal-Gly)(2)(H(2)O)(2)] crystallized in the monoclinic system in the P2(1)/c space group. The molecule is a dinuclear complex, formed by two [Cu(Sal-Gly)(H(2)O)] units. The electropolymerization properties of the
Fabien Vincent et al.
Bioorganic & medicinal chemistry letters, 19(23), 6793-6796 (2009-10-24)
The screening of known medicinal agents against new biological targets has been shown to be a valuable approach for revealing new pharmacology of marketed compounds. Recently, carbamate, urea and ketone inhibitors of fatty acid amide hydrolase (FAAH) have been described
Wen-Yong Han et al.
Organic letters, 14(4), 976-979 (2012-02-02)
The catalytic enantioselective three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids with a newly designed thiourea-binol catalyst is presented. A broad range of alkylaminophenols can be obtained in good yield (up to 92%) and good to high enantioselectivity (up
Zhiqiu Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 83(1), 511-517 (2011-09-29)
In this work, three Tricyclo [3.3.1.1(3,7)] decane-1-amine (Amantadine) Schiff-Bases, Amantadine-Salicylaldehyde (AS), Amantadine-5-Chloro-Salicylaldehyde (AS-5-C) and Amantadine-o-Vanillin (AS-o-V), were synthesized by direct heating reflux method in ethanol solution and characterized by infrared spectrum and elementary analysis. Fluorescence quenching was used to study
Mirta Rubčić et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(18), 5620-5631 (2012-03-27)
The Schiff base derived from salicylaldehyde and 2-amino-3-hydroxypyridine affords a diversity of solid forms, two polymorphic pairs of the enol-imino (D1 a and D1 b) and keto-amino (D2 a and D2 b) desmotropes. The isolated phases, identified by IR spectroscopy, X-ray crystallography, and (13)C
1/2