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关键词:'03273'
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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
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
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
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
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)
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.
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
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
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.
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
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
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
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.
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
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
Jesús F Arteaga et al.
Molecules (Basel, Switzerland), 17(5), 5126-5138 (2012-05-05)
Antioxidant activity of a number of small (low molecular weight) natural compounds found in spices, condiments or drugs (gallic acid, sesamol, eugenol, thymol, carvacrol, vanillin, salicylaldehyde, limonene, geraniol, 4-hexylresorcinol, etc.) has been evaluated using electrochemical and DPPH• radical scavenging measurements.
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
Wan Yen Lee et al.
Metallomics : integrated biometal science, 4(2), 188-196 (2011-12-03)
The copper(ii) complexes of two salicylaldehyde semicarbazones, HOC(6)H(4)CH[double bond, length as m-dash]N-NHCONR(2) [H(2)Bnz(2) (R = CH(2)Ph) and H(2)Bu(2) (R = Bu)], were evaluated for their DNA binding and cleavage properties by spectrophotometric DNA titration, ethidium bromide displacement assay and electrophoretic
Subhashree P Dash et al.
Journal of inorganic biochemistry, 144, 1-12 (2015-01-13)
Three dioxidovanadium(V) complexes [VO2L(1-3)] (1-3) [HL(1)=1-napthoyl hydrazone of 2-acetyl pyridine, HL(2)=2-furoyl hydrazone of 2-acetyl pyridine and H2L(3)=isonicotinoyl hydrazone of 2-hydroxy benzaldehyde] have been reported. All the complexes were characterized by various spectroscopy (IR, UV-visible and NMR) and the molecular structures
Khosro Mohammadi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 107, 145-150 (2013-02-19)
Synthesis and evaluation of three new oxovanadium(IV) complexes, formed by the interaction of vanadyl acetylacetonate and the Schiff bases: 3,4-bis((E)-2-hydroxybenzylideneamino)benzoic acid (L(1)), 3,4-bis-((E)-2-hydroxy-3-methoxybenzylideneamino)benzoic acid (L(2)) and 3,4-bis((E)-2,4-dihydroxybenzylideneamino)benzoic acid (L(3)) in methanol. The complexes have been characterized and studied by IR
Stephen K Murphy et al.
Organic letters, 13(23), 6216-6219 (2011-11-09)
A method has been developed for the intermolecular hydroacylation of homoallyl alcohols with salicylaldehydes to furnish homoaldol products in 50-98% yields. The method also applies to the hydroacylation of 2-hydroxystyrenes. This work highlights the use of hydroacylation as a unified
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
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
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
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
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
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
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