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C19686

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Katharina Mädje et al.
Microbial cell factories, 11, 7-7 (2012-01-13)
Enzymatic NADH or NADPH-dependent reduction is a widely applied approach for the synthesis of optically active organic compounds. The overall biocatalytic conversion usually involves in situ regeneration of the expensive NAD(P)H. Oxidation of formate to carbon dioxide, catalyzed by formate...
Z A Dautova et al.
Vestnik oftalmologii, 117(1), 29-30 (2001-05-08)
The kinetics of chloracetophenone (CN) in rabbit eyes was studied by high-performance liquid chromatography on a model of experimental third-degree burn. By the end of the first hour after exposure to the lacrimate, CN content was high in all the...
Expanding the [1,2]-aryl migration to the synthesis of substituted indoles.
Tao Pei et al.
Angewandte Chemie (International ed. in English), 47(22), 4231-4233 (2008-04-30)
Wladimir Solodenko et al.
Molecular diversity, 9(4), 333-339 (2005-11-29)
The preparation of a new palladium(II) complex with a 2-pyridinealdoxime ligand and its use as a Pd(0) precatalyst in the cross-coupling Suzuki-Miyaura reaction is described. Several concepts for the immobilization of this catalytic system are presented and compared in order...
Zhi-Min Ou et al.
Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 19(2), 206-211 (2005-06-22)
(R)-chlorprenaline, a selective activator of beta2 receptor and an effective drug for bronchitis and asthma, is industrially prepared from (R)-2'-chloro-1-phenyl-ethanol. In this communication, we describe (1) the identification of Saccharomyces cerevisiae B5 as an effective host for stereoselective reduction of...
Qing Xie et al.
Biotechnology progress, 22(5), 1301-1304 (2006-10-07)
The asymmetric reduction of o-chloroacetophenone 1 with Candida pseudotropicalis 104 produced the corresponding (S)-1-(2-chloro-phenyl)-ethanol 2 with the enantiomeric excess (ee >99%) without addition of any cosolvent. The cell could tolerate high ketone 1 concentration of 233.8 mmol/L (i.e., 36 g/L)...
Gregg M Recer et al.
Regulatory toxicology and pharmacology : RTP, 36(1), 1-11 (2002-10-18)
In 1996, the New York State Department of Health was charged by the State Legislature to develop regulations regarding the types of self-defense spray devices which could lawfully be purchased, possessed, and used in New York State. Prior to this...
Treatment of capsaicin (Mace?) dermatitis.
J R Suchard
The American journal of emergency medicine, 17(2), 210-211 (1999-04-02)
Yan Xie et al.
Bioresource technology, 101(3), 1054-1059 (2009-09-22)
Target reaction-oriented screening from soil samples yielded a ketone reductase-producing Bacillus sp., strain ECU0013, which exhibits excellent stereoselectivity, high substrate tolerance and is capable of regenerating the required cofactor with glucose as a co-substrate. Whole-cells catalyzed the asymmetric reduction of...
Lenilson C Rocha et al.
Biotechnology letters, 31(10), 1559-1563 (2009-06-06)
The asymmetric reduction of 2-chloro-1-phenylethanone (1) by seven strains of marine fungi was evaluated and afforded (S)-(-)-2-chloro-1-phenylethanol with, in the best case, an enantiomeric excess of 50% and an isolated yield of 60%. The ability of marine fungi to catalyse...
Anil K Nigam et al.
Journal of hazardous materials, 184(1-3), 506-514 (2010-09-17)
Pyrolysis-GC/MS system with on-line micro-furnace was used to make rapid evaluation of ω-chloroacetophenone (CN) decomposition under inert thermal atmospheres. The volatile products evolved during pyrolysis were analyzed by thermal gravimetric analysis (TGA) and Py-GC/MS to obtain specific thermogram and pyrogram....
Katharina Schmölzer et al.
Bioresource technology, 108, 216-223 (2012-01-28)
We report herein on bioprocess development guided by the hydrophobicities of substrate and product. Bioreductions of o-chloroacetophenone are severely limited by instability of the catalyst in the presence of aromatic substrate and (S)-1-(2-chlorophenyl)ethanol. In situ substrate supply and product removal...
Harrie J M Gijsen et al.
Journal of medicinal chemistry, 53(19), 7011-7020 (2010-09-03)
The TRPA1 channel can be considered as a key biological sensor to irritant chemicals. In this paper, the discovery of 11H-dibenz[b,e]azepines (morphanthridines) and dibenz[b,f][1,4]oxazepines is described as extremely potent agonists of the TRPA1 receptor. This has led to the discovery...
The use of chemical incapacitant sprays: a review.
Jason Smith et al.
The Journal of trauma, 52(3), 595-600 (2002-03-20)
A K De et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 57(3), 545-549 (2001-04-13)
Computational work has been done for a bichromophore (4MBA) comprising a donor 4-methoxy-benzo[b]thiophene (4MBT) and an acceptor molecule p-chloro-acetophenone (pclA) linked together by a HC=CH bond which shows large hyperpolarizability. The charge transfer in this bichromophoric system is computed by...
Regina Kratzer et al.
Biotechnology and bioengineering, 108(4), 797-803 (2011-03-16)
Chiral 1-(o-chlorophenyl)-ethanols are key intermediates in the synthesis of chemotherapeutic substances. Enantioselective reduction of o-chloroacetophenone is a preferred method of production but well investigated chemo- and biocatalysts for this transformation are currently lacking. Based on the discovery that Candida tenuis...
R Treudler et al.
The British journal of dermatology, 140(3), 531-534 (1999-05-08)
2-Chloracetophenone (CN) is widely used as tear gas by police and civilians for self-defence. It may affect the eyes, respiratory system and skin, sometimes causing serious injuries. Both irritative and allergic contact dermatitis have been described. We report three police...
Xiao-Hong Chen et al.
Microbial cell factories, 11, 119-119 (2012-09-06)
The bacterium Acetobacter sp. CCTCC M209061 is a promising whole-cell biocatalyst with exclusive anti-Prelog stereoselectivity for the reduction of prochiral ketones that can be used to make valuable chiral alcohols such as (R)-4-(trimethylsilyl)-3-butyn-2-ol. Although it has promising catalytic properties, its...
Carlotta Raviola et al.
The Journal of organic chemistry, 77(20), 9094-9101 (2012-09-12)
The nonaccessibility of phenyl cations by irradiation of electron-poor aryl chlorides was circumvented by transforming the carbonyl group of aromatic ketones or aldehydes into the corresponding 1,3-dioxolanes and the carboxyl group of benzoate ester into an orthoester functionality. This transformation...
R Suganthi et al.
Journal of medicinal food, 10(1), 149-153 (2007-05-03)
High fructose feeding in normal rats induces insulin resistance and also facilitates oxidative damage. The present study examines the effects of a spices mixture (SM) on oxidative stress markers and antioxidant potential in tissues of high fructose-fed insulin-resistant rats. Male...
Bert Brône et al.
Toxicology and applied pharmacology, 231(2), 150-156 (2008-05-27)
The TRPA1 channel is activated by a number of pungent chemicals, such as allylisothiocyanate, present in mustard oil and thiosulfinates present in garlic. Most of the known activating compounds contain reactive, electrophilic chemical groups, reacting with cysteine residues in the...
Zhimin Ou et al.
Wei sheng wu xue bao = Acta microbiologica Sinica, 43(4), 523-526 (2005-11-10)
Four strains of microorganisms which have activity of chloroacetophenone reduction were screened, in which Saccharomyces cerevisiae B5 showed the highest activity and good stereoselectivity. This strains showed different activity on the reduction of various substrates in the following order: 2'-chloroacetophenone...
Efficient whole-cell biotransformation in a biphasic ionic liquid/water system.
Holger Pfruender et al.
Angewandte Chemie (International ed. in English), 43(34), 4529-4531 (2004-09-02)
Chemical casualties. Sensory incapacitants.
Journal of the Royal Army Medical Corps, 148(4), 392-394 (2003-04-22)
Peter G Blain
Toxicological reviews, 22(2), 103-110 (2004-04-10)
Irritant incapacitants, also called riot control agents, lacrimators and tear gases, are aerosol-dispersed chemicals that produce eye, nose, mouth, skin and respiratory tract irritation. Tear gas is the common name for substances that, in low concentrations, cause pain in the...
Daniel I Perez et al.
Journal of medicinal chemistry, 54(12), 4042-4056 (2011-04-20)
Development of kinase-targeted therapies for central nervous system (CNS) diseases is a great challenge. Glycogen synthase kinase 3 (GSK-3) offers a great potential for severe CNS unmet diseases, being one of the inhibitors on clinical trials for different tauopathies. Following...
Amit Singh Yadav et al.
BioFactors (Oxford, England), 31(3-4), 219-227 (2008-11-11)
Food constituents are the major source of various phytochemicals and micronutrients. The importance of these dietary constituents has been stressed in recent years due to their antioxidant and anticarcinogenic potential. Spices used in Indian foods such as cloves (Syzygium aromaticum)...