Showing 1-28 of 28 results for "T30805"
Krista M Wager et al.
Organic letters, 13(15), 4052-4055 (2011-07-07)
A method for preparing benzyl aryl thioethers utilizing an in situ deprotection of benzyl thioacetates as an alternative to free thiols as starting materials has been developed and optimized. Good to excellent yields of diverse benzyl aryl thioethers are obtained...
H P S Chauhan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 74(1), 67-73 (2009-06-30)
Replacement reactions of toluene-3,4-dithiolatoantimony(III) chloride with oxygen and/or sulphur donor ligands like benzoic acid, thiobenzoic acid, thioacetic acid, phenol, thiophenol, sodium salicylate and thio glycolic acid in 1:1 molar ratio as well as disodium oxalate in 2:1 molar ratio in...
Ning Shangguan et al.
Journal of the American Chemical Society, 125(26), 7754-7755 (2003-06-26)
A new amide synthesis strategy based on a fundamental mechanistic revision of the reaction of thio acids and organic azides is presented. The data demonstrate that amines are not formed as intermediates in this reaction. Alternative mechanisms proceeding through a...
Md Ashraful Hoque et al.
Bioorganic & medicinal chemistry letters, 22(21), 6770-6772 (2012-10-02)
Two thioacetate tails were introduced to the chlamydocin- and CHAP31-related cyclic tetrapeptides. An intramolecular disulfide bridge could be formed in the CHAP31-related cyclic peptides. Both the thioacetate-tailed and disulfide-bridged peptides were potent histone deacetylase inhibitors in the presence of sulfhydryl...
Brian C Smith et al.
Biochemistry, 46(50), 14478-14486 (2007-11-22)
Sir2 protein deacetylases (or sirtuins) catalyze NAD+-dependent conversion of epsilon-amino-acetylated lysine residues to deacetylated lysine, nicotinamide, and 2'-O-acetyl-ADP-ribose. Small-molecule modulation of sirtuin activity might treat age-associated diseases, such as type II diabetes, obesity, and neurodegenerative disorders. Here, we have evaluated...
Sonia E Ulic et al.
The journal of physical chemistry. A, 112(27), 6211-6216 (2008-06-13)
Trifluorothioacetic acid-S-(trifluoromethyl)ester, CF3C(O)SCF3, was prepared by reacting CF3C(O)Cl and AgSCF3 at 50 degrees C. The compound was characterized by (13)C-, (19)F-NMR, UV, and vibrational spectroscopy as well as by gas electron diffraction (GED) and quantum chemical calculations (HF, MP2, and...
Phosphoric Acid Catalyzed Asymmetric 1, 6?Conjugate Addition of Thioacetic Acid to para?Quinone Methides.
Dong N, et al.
Angewandte Chemie (International Edition in English), 55(4), 1460-1464 (2016)
Christina Wedemeyer-Exl et al.
Organic & biomolecular chemistry, 5(13), 2119-2128 (2007-06-22)
The thiol-dependent methylation of heptamethyl cob(II)yrinate 8r with methyl iodide and methyl tosylate was explored under a variety of conditions. The interaction of the heptamethyl cob(II)yrinate with a variety of thiols was monitored prior to the addition of the methylating...
Xiaopeng Xuan et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 81(1), 236-241 (2011-07-05)
The infrared (4000-400 cm(-1)) and Raman spectra (3700-100 cm(-1)) of liquid S-phenyl thioacetate have been recorded. Molecular geometry, vibrational frequencies and the corresponding assignments were performed by density funtional theory (DFT) using the 6-311++G(d,p) basis set. Two conformers have been...
I Vucenik et al.
Anticancer research, 21(2B), 1247-1255 (2001-06-09)
Based on a "field-effect" theory in colon carcinogenesis, and the expression of the disaccharide tumor marker D galactose-beta-[1-->3]-N-acetyl-D-galactosamine (Gal-GalNAc) in the rectal mucus of patients with cancer and precancer of the colon, Shamsuddin developed a simple, accurate, inexpensive, easy to...
Jianhua Ren
The journal of physical chemistry. A, 110(50), 13405-13411 (2006-12-15)
We studied the effects of polar groups on the gas-phase acidities of carboxylic acids experimentally and computationally. In this connection, the gas-phase acidities (DeltaH(acid), the enthalpy of deprotonation, and DeltaG(acid), the deprotonation free energy) of borane-complexed methylaminoacetic acid ((CH(3))2N(BH(3))CH(2)CO(2)H) and...
M Eguchi et al.
Medical electron microscopy : official journal of the Clinical Electron Microscopy Society of Japan, 34(1), 61-70 (2001-08-02)
Cytochemical and ultrastructural studies of 42 patients with acute nonlymphoblastic leukemia (ANLL) lacking myeloperoxidase as detected by light microscopy were performed. These ANLL patients were classified into minimally differentiated acute myeloid leukemia (AML-M0) (26 cases), mixed-lineage leukemia (9 cases), and...
Julián Valero et al.
Organic & biomolecular chemistry, 10(28), 5417-5430 (2012-06-14)
Polycationic oligo(chiral bicyclic guanidines) constitute useful non-peptidic penetrating agents for cell uptake and protein surface recognition. We report herein improved and selective procedures for the preparation of oligoguanidinium scaffolds linked through thioether bonds, with similar or different groups and functions...
Francesco Cellesi et al.
Biomaterials, 25(21), 5115-5124 (2004-04-28)
We have previously described a gelation process based on the occurrence of both physical and a chemical mechanisms ('tandem process'), in which a telechelic linear poly(propylene glycol)-bl-poly(ethylene glycol)-bl-poly(propylene glycol) is first thermally gelled and subsequently covalently cross-linked by the reaction...
Asymmetric induction in the conjugate addition of thioacetic acid to methacrylamides with chiral auxiliaries.
Kim B H, et al.
Tetrahedron Asymmetry, 16(6), 1215-1220 (2005)
Rubén Mas-Ballesté et al.
Dalton transactions (Cambridge, England : 2003), 39(6), 1511-1518 (2010-01-28)
While M-percarboxylato species are elusive intermediates, their sulfur containing analogues are known in some cases. The feasibility of isolation of M-perthioacetato compounds allowed, in this work, to obtain new insights into the pathways that follow the reactivity of M-E-ER (E...
E Pinart et al.
Journal of anatomy, 199(Pt 4), 435-448 (2001-11-06)
This study was undertaken to investigate the morphological characteristics and lectin affinity of the testicular lamina propria in healthy boars and in unilateral and bilateral abdominal cryptorchid boars. The lamina propria of scrotal testes from healthy boars and unilateral cryptorchid...
David Crich et al.
Angewandte Chemie (International ed. in English), 48(13), 2355-2358 (2009-02-21)
Highly activated thioesters formed by the rapid reaction of C-terminal thioacids derived from protected amino acids and peptides with the Sanger reagent and other electron-deficient aryl halides in the presence of a free amine immediately form a peptide bond with...
Organocatalytic enantioselective Michael addition of thioacetic acid to enones.
Li Hao, et al.
Tetrahedron Letters, 47(18), 3145-3148 (2006)
Wen Yang et al.
Organic & biomolecular chemistry, 10(34), 6876-6884 (2012-08-01)
A highly enantio- and diastereoselective sulfa-Michael addition of thioacetic acid to α,β-disubstituted nitroalkenes catalysed by a chiral squaramide organocatalyst has been described. This organocatalytic reaction at an extremely low catalyst loading (0.2 mol%) furnished synthetically useful β-nitro sulfides in excellent...
Rachid Bel Rhlid et al.
Journal of agricultural and food chemistry, 50(14), 4087-4090 (2002-06-27)
Enzymatic hydrolysis of S-3-(2-methylfuryl) thioacetate and S-2-furfuryl thioacetate using lipase from Candida rugosa produced 2-methyl-3-furanthiol and 2-furfurylthiol, respectively. When reactions were carried out at room temperature and pH 5.8, 2-methyl-3-furanthiol was produced in a optimal yield of 88% after 15...
Vicente García-Ruiz et al.
Biotechnology progress, 18(2), 252-256 (2002-04-06)
A new strain of Alcaligenes xylosoxydans able to aerobically cometabolize thiodiglycol, the primary hydrolysis product of sulfur mustard, was isolated and tested in a laboratory scale stirred tank reactor. The strain, named PGH10, cannot use TDG as sole carbon and...
Kyle L Kimmel et al.
Journal of the American Chemical Society, 131(25), 8754-8755 (2009-06-06)
The highly enantioselective addition of thioacetic acid to nitroalkenes using a new sulfinyl urea organocatalyst is described. The addition of thioacetic acid proceeds in high yields and enantioselectivities for a variety of aromatic and aliphatic nitroalkene substrates. This new method...
Libo Hu et al.
The Journal of organic chemistry, 72(12), 4543-4546 (2007-05-15)
Taurine and substituted taurines were synthesized efficiently from aziridines via ring-opening reaction with thioacetic acid, oxidation with performic acid, and hydrolysis in hydrochloric acid. The current method shows more benefit in purification and efficiency in the preparation of taurine and...
Angelo Alberti et al.
Physical chemistry chemical physics : PCCP, 7(2), 250-257 (2005-01-21)
The redox properties of ethyl diethoxyphosphoryldithioacetate (1), methyl diethoxyphosphorylfluorodithioacetate (2) and methyl diethoxyphosphoryldifluorodithioacetate (3) were measured by cyclic voltammetry. Addition of free radicals to the three dithioesters led to the detection of the ESR spectra of the spin adducts only...
Yanli Liu et al.
Analytical chemistry, 79(6), 2221-2229 (2007-02-10)
Gold nanoparticles have shown great promise as therapeutics, therapeutic delivery vectors, and intracellular imaging agents. For many biomedical applications, selective cell and nuclear targeting are desirable, and these remain a significant practical challenge in the use of nanoparticles in vivo....
Gita Sedghi et al.
Journal of the American Chemical Society, 130(27), 8582-8583 (2008-06-19)
A series of thioacetate-terminated butadiyne-linked porphyrin oligomers have been synthesized with one to three porphyrin repeat units. Single molecule electrical scanning tunneling microscopy measurements using the I(s) and I(t) methods were used to determine the molecule conductances for this series...
I A Gol'dina et al.
Eksperimental'naia i klinicheskaia farmakologiia, 73(3), 25-27 (2010-04-23)
The influence of BM-7-02 compound on the production of cytokines in the culture of healthy volunteers' blood cells. This compound suppresses the production of main cytokine (gamma-IFN, IL-2 and IL-4) synthesized by CD4+ Th1 and Th2 cells, stimulates the production...

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