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Benoît M R Liénard et al.
Bioorganic & medicinal chemistry letters, 17(4), 964-968 (2006-12-13)
Metallo-beta-lactamases (MBLs) catalyze the hydrolysis of beta-lactams including penicillins, cephalosporins and carbapenems. Starting from benzohydroxamic acid (1) structure-activity studies led to the identification of selective inhibitors of the FEZ-1 MBL, e.g., 2,5-substituted benzophenone hydroxamic acid 17 has a K(i) of
Francisco J Prado-Prado et al.
Bioorganic & medicinal chemistry, 18(6), 2225-2231 (2010-02-27)
There are many of pathogen parasite species with different susceptibility profile to antiparasitic drugs. Unfortunately, almost QSAR models predict the biological activity of drugs against only one parasite species. Consequently, predicting the probability with which a drug is active against
Xi-Ai Gao et al.
The Journal of organic chemistry, 77(17), 7700-7705 (2012-08-18)
A Pd-catalyzed method for the synthesis of benzisoxazolones from benzohydroxamic acids using Oxone as an oxidant in a one-pot procedure has been developed. In this process, the reaction appears to be suitable for construction of various benzisoxazolones.
Xiong Ye et al.
Journal of the American Chemical Society, 128(5), 1444-1445 (2006-02-02)
Ultrafast kinetic measurements of NO rebinding to horseradish peroxidase (HRP) are reported for the first time. The geminate kinetics are found to be exponential for all HRP samples studied. The ferric forms of HRP have NO geminate recombination time constants
Mitsuhiro Shiino et al.
Journal of enzyme inhibition and medicinal chemistry, 23(1), 16-20 (2008-03-18)
Several synthetic N-substituted N-nitrosohydroxylamines were found to inhibit mushroom tyrosinase in a pH-dependent manner regardless of the N-substituent. The inhibitory activity, or pI(50) ( - log [IC(50), M]) value, linearly decreased as the pH of the media increased. The inhibitory
Amita Pathak et al.
Chemical communications (Cambridge, England), 50(96), 15232-15234 (2014-10-25)
Reaction of BiPh3 or Bi(O(t)Bu)3 with benzohydroxamic acid (H2-BHA) results in formation of novel mono- and di-anionic hydroxamato complexes; [Bi2(BHA)3]∞ 1, [Bi(H-BHA)3] 2, [Bi(BHA)(H-BHA)] 3, all of which display nM activity against Helicobacter pylori. Subsequent dissolution of [Bi2(BHA)3]∞ in DMSO/toluene
Michelle Medeiros et al.
The Journal of organic chemistry, 77(23), 10907-10913 (2012-11-22)
This work presents a detailed kinetic and mechanistic study of biologically interesting dephosphorylation reactions involving the exceptionally reactive nucleophilic group, hydroxamate. We compare results for hydroxamate groups anchored on the simple molecular backbone of benzohydroxamate (BHA) and on the more
Péter Buglyó et al.
Dalton transactions (Cambridge, England : 2003), (38)(38), 8063-8070 (2009-09-23)
Novel half-sandwich Ru(II)-benzohydroxamate complexes were synthesized. [Ru(eta(6)-p-cymene)(mu-bha)](2)Cl(2) (bhaH = benzohydroxamic acid) with (O,O) coordination of the ligand, was characterized by elemental analysis, spectroscopic ((1)H-NMR, IR) and ESI-MS methods. Replacement of the chloride of the precursor by CF(3)SO(3)(-) and reaction of
Marc Ouellet et al.
Archives of biochemistry and biophysics, 431(1), 107-118 (2004-10-07)
The cyclooxygenase activity of the bifunctional enzyme prostaglandin H(2) synthase-2 (PGHS-2) is the target of non-steroidal anti-inflammatory drugs. Inhibition of the peroxidase activity of PGHS has been less studied. Using Soret absorption changes, the binding of aromatic hydroxamic acids to
Martha Araceli Elizondo-Álvarez et al.
Ecotoxicology and environmental safety, 207, 111509-111509 (2020-12-02)
Currently there is a wide variety of collectors used in mineral processing, the xanthates being the most used in sulfides flotation. Unfortunately, it is known that xanthates are not stable compounds and their decomposition generates carbon disulfide (CS2), a substance
Jan Schraml et al.
Magnetic resonance in chemistry : MRC, 43(7), 535-542 (2005-04-30)
NMR spectra (1H, 13C, 15N) of para- and meta-substituted benzohydroxamic acids were studied in dry dimethyl sulfoxide solutions. The 13C chemical shifts were very close to those found by cross-polarization magic angle spinning in solids, the hydroxamic (not hydroximic) structure
Phieng Siliphaivanh et al.
Bioorganic & medicinal chemistry letters, 17(16), 4619-4624 (2007-06-09)
Histone deacetylase (HDAC) inhibitors that target Class I and Class II HDACs are of synthetic and therapeutic interest and ongoing clinical studies indicate that they show great promise for the treatment of cancer. Moreover, Zolinza (vorinostat) was recently approved by
David J Witter et al.
Bioorganic & medicinal chemistry letters, 17(16), 4562-4567 (2007-06-20)
Benzo[b]thienyl hydroxamic acids, a novel class of histone deacetylase (HDAC) inhibitors, were identified via a targeted screen of small molecule hydroxamic acids. Various substitutions were explored in the C5- and C6-positions of the benzo[b]thiophene core to characterize SAR and develop
Natividad Gálvez et al.
Inorganic chemistry, 44(8), 2706-2709 (2005-04-12)
The release of iron from ferritin by aceto- and benzohydroxamic acids was studied at two different iron chelator concentrations (100 and 10 mM), at two pH values (7.4 and 5.2), and in the presence or absence of urea. Collectively, the
Maria R Beccia et al.
Inorganic chemistry, 50(20), 10152-10162 (2011-09-23)
The equilibria and the kinetics of the binding of Iron(III) to salicylhydroxamic (SHA) and benzohydroxamic (BHA) acids have been investigated in aqueous solution (I = 1 M (HClO(4)/NaClO(4)), T = 298 K) using spectrophotometric and stopped-flow methods. Whereas Iron(III) forms
Qingshan Li et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 10(6), 1456-1462 (2004-03-23)
A series of diorganotin(IV) and dichlorotin(IV) derivatives of 4-X-benzohydroxamic acids, [HL(1) (X = Cl) or HL(2) (X = OCH(3))] formulated as [R(2)SnL(2)] (R = Me, Et, nBu, Ph or Cl; L = L(1) or L(2)), along with their corresponding mixed-ligand
Marion Flipo et al.
Journal of medicinal chemistry, 52(21), 6790-6802 (2009-10-14)
Hydroxamates are valuable tools for chemical biology as well as interesting leads for medicinal chemistry. Although many hydroxamates display nanomolar activities against metalloproteases, only three hydroxamates have reached the market, among which is the HDAC inhibitor vorinostat. Failures in development
Ilaria Ciofini
Magnetic resonance in chemistry : MRC, 42 Spec no, S48-S56 (2004-09-15)
Using ab initio theoretical approaches, we investigated the relative stability of two of the possible isomers of N-phenylbenzohydroxamic acid, PhCONOHPh. In particular, within the framework of density functional theory (DFT), we studied the cis and trans conformational isomers of PhCONOHPh
Ban-Feng Ruan et al.
Current medicinal chemistry, 19(24), 4175-4183 (2012-07-27)
Resveratrol (3,5,4'-trans-trihydroxystilbene) is a naturally occurring phytoalexin that is found in medicinal plants, grape skin, peanuts and red wine. Resveratrol exhibits a remarkable range of biological activities, including anticancer activity, antitubulin activity, anti-cardiovascular disease activity, etc. Several other natural products
Ben-Zhan Zhu et al.
Proceedings of the National Academy of Sciences of the United States of America, 107(48), 20686-20690 (2010-11-16)
Hydroxamic acids, which are best-known for their metal-chelating properties in biomedical research, have been found to effectively detoxify the carcinogenic polyhalogenated quinoid metabolites of pentachlorophenol and other persistent organic pollutants. However, the chemical mechanism underlying such detoxication is unclear. Here
Roman Rericha et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 61(8), 1899-1903 (2005-05-03)
Using solid benzohydroxamic acid (BHA) as a model compound for its salts, a broad absorption at 2730 cm(-1) was generally agreed to represent the nu(OH) band of the OH... ON bonds. The absence of nu(OH) band in the IR region
B Zelent et al.
Biochemistry, 44(48), 15953-15959 (2005-11-30)
The iron of lactoperoxidase is predominantly high-spin at ambient temperature. Optical spectra of lactoperoxidase indicate that the iron changes from high-spin to low-spin in the temperature range from room temperature to 20 K. The transformation is independent of whether the
Swetlana Gez et al.
Inorganic chemistry, 44(8), 2934-2943 (2005-04-12)
A new family of relatively stable Cr(V) complexes, [Cr(V)O(L)(2)](-) (LH(2) = RC(O)NHOH, R = Me, Ph, 2-HO-Ph, or HONHC(O)(CH(2))(6)), has been obtained by the reactions of hydroxamic acids with Cr(VI) in polar aprotic solvents. Similar reactions in aqueous solutions led
Florian Thaler et al.
Journal of medicinal chemistry, 53(2), 822-839 (2009-12-19)
The histone deacetylases (HDACs) are able to regulate gene expression, and histone deacetylase inhibitors (HDACi) emerged as a new class of agents in the treatment of cancer as well as other human disorders such as neurodegenerative diseases. In the present
Aaron Moulin et al.
Biochemistry, 46(20), 5982-5990 (2007-05-02)
Serine proteases, like serine beta-lactamases, are rapidly and covalently inhibited by suitably designed phosph(on)ates. The active sites of these enzymes must, therefore, be able to stabilize the pentacoordinated transition states of phosphyl transfer reactions as well as the tetrahedral transition
Fernando Ruy et al.
Journal of bioenergetics and biomembranes, 38(2), 129-135 (2006-10-21)
Candida parapsilosis mitochondria contain three respiratory chains: the classical respiratory chain (CRC), a secondary parallel chain (PAR) and an "alternative" oxidative pathway (AOX). We report here the existence of similar pathways in C. albicans. To observe the capacity of each
Brian P Callahan et al.
Bioorganic & medicinal chemistry letters, 16(14), 3802-3805 (2006-05-09)
2,3-Dihydroxybenzohydroxamoyl adenylate (I) was prepared as a potential product analog inhibitor of EntE (EC# 2.7.7.58), a 2,3-dihydroxybenzoate AMP ligase from Escherichia coli that is required for the biosynthesis of enterobactin. This compound, obtained by the aqueous reaction of imidazole-activated adenosine
Mannar R Maurya et al.
Inorganic chemistry, 45(15), 5924-5937 (2006-07-18)
Reaction between [VO(acac)(2)] and the ONN donor Schiff base Hsal-ambmz (I) (Hsal-ambmz = Schiff base obtained by the condensation of salicylaldehyde and 2-aminomethylbenzimidazole) resulted in the formation of the complexes [V(IV)O(acac)(sal-ambmz)] (1), [V(V)O(2)(acac-ambmz)] (2) (Hacac-ambmz = Schiff base derived from
A Henriksen et al.
Biochemistry, 37(22), 8054-8060 (1998-06-12)
The three-dimensional structure of recombinant horseradish peroxidase in complex with BHA (benzhydroxamic acid) is the first structure of a peroxidase-substrate complex demonstrating the existence of an aromatic binding pocket. The crystal structure of the peroxidase-substrate complex has been determined to
Aleksandr G Medentsev et al.
FEMS yeast research, 5(3), 231-236 (2004-11-24)
The study of the effect of nucleoside phosphates on the activity of cyanide-resistant oxidase in the mitochondria and submitochondrial particles of Yarrowia lipolytica showed that adenosine monophosphate (5'-AMP, AMP) did not stimulate the respiration of intact mitochondria. The incubation of
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