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Showing 1 to 20 of 58 for “"Carbamates"”.
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Synthesis, Characterization, And Self-Assembly Of Bi-Carbamates And Tri-Carbamates
… of two-armed and three-armed carboxamides and carbamates have been synthesized, characterized and self-assembly process was studied. The self-assembly of these amides and carbamates were studied in a large number of single solvents as well as combination of solvents. Two-armed amides and …
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The effects of carbamates on bobwhite (Colinus virginianus) activity
Digitized by Kansas Correctional Industries
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The effects of carbamates on bobwhite (Colinus virginianus) activity
Digitized by Kansas Correctional Industries
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Preparation and properties of carbamates, nitrocarbamates and their derivatives
Since representative alipahtic N-Nitrocarbamates have been found by Dr. J. Philip Mason and Mr. Robert T. Pollock to be suitable additives for Diesel fuels, it was thought desirable to synthesize several members of the series not recorded in the literature. Accordingly plans were made for the …
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A Comparative In Vitro Metabolic Study of Certain Pesticidal Phenyl N-Methyl-Carbamates
… in this study was developed whereby various carbamates and their metabolites could be chromatographed in the gaseous phase. Also, a comparative in vitro study of 15,000 g liver supernatants from human, rat, and dog was performed. Additional tissues investigated for metabolic activity toward …
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Small Core Heterocyclic Carbamates and Carboxamides: Resistance-breaking Acetylcholinesterase Inhibitors Targeting the Malaria Mosquito, Anopheles gambiae
… three classes of five membered heterocyclic carbamates (isoxazol-3-yl, pyrazol-5-yl, and pyrazol-4-yl), and 3-oxoisoxazole- 2(3H)-carboxamide as acetylcholinesterase inhibitors (AChE) targeting wild type (G3) and resistant (Akron) malaria mosquito Anopheles gambiae (Ag). Isoxazole carboxamide …
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The Delayed Neurotoxicity of Thio-, Allylthio- and Dithio-Carbamates and Its Relevance to a Mode of Action
34 aryl carbamates which were synthesized in the laboratory and 4 commercial carbamates, were screened for delayed neurotoxicity in the White Leghorn hen. Several carbamates proved to be delayed neurotoxins with this ability being particularly concentrated in the thiocarbamates bearing short, …
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Determination of Allosteric Solvent Effects Between Acetylcholinesterase and Mosquito Selective Carbamates: Implications for High Throughput Screening of Insecticides
… developed several phenyl-substituted N-methylcarbamates producing a high degree of selectivity for Anopheles gambiae acetylcholinesterase (AgAChE) over human AChE. Molecular models suggest alternate conformations (flexibility) of W84 and W431 (Ag numbering) at the hydrophobic subpocket of the …
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The Degradation of Four N-Methyl Carbamates and The Reactivation of Cholinesterase in The House Fly (Musca Domestica (L.))
Made available in DSpace on 2014-12-09T20:27:16Z (GMT). No. of bitstreams: 1 6503598.pdf: 2025825 bytes, checksum: 3149927f92e7f312cbd5b6bde1b0d3bf (MD5) Previous issue date: 1964
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S(N)2' reactions of chiral allylic carbamates with organocopper reagents. Asymmetric synthesis of tertiary and quarternary carbon centers
… N}2\sp\prime$ cuprate reactions of allylic carbamates were examined. The amine and amino ether auxiliaries were evaluated based on the enantioselectivities each provided in the reactions of the carbamates with methylcopper. The effects of varying the geometry and substitution pattern of the …
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Revisiting aryl N-methylcarbamate acetylcholinesterase inhibitors as potential insecticides to combat the malaria-transmitting mosquito, Anopheles gambiae
… Anopheles gambiae. We identified six novel carbamates that demonstrated levels of target selectivity exceeding our project milestone of 100-fold. Among the C2-substituted phenylcarbamates examined (class II), 2'-(2- ethylbutoxy)phenyl N-methylcarbamate (9bd*) was extraordinarily selective …
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Synthetic and Mechanistic Studies of Carbamate-Directed Lithiation Reactions: (1) Assymetric Deprotonation of N-Boc Indolines. (2) the Relationship Between Reactivity and Directing Group Orientation
… that rotationally restricted $\alpha$-lithio carbamates have increased configurational stability relative to more flexible analogs. An increase in the rate of epimerization of $\alpha$-lithio carbamates in the presence of $N,\ N,\ N\sp\prime ,\ N\sp\prime$-tetramethylethy lenediamine suggests …
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The Development of Enantioselective Rhodium-Catalysed Aziridination Reactions Directed by a Chiral Cation
… to the asymmetric aziridination of allylic carbamates as a strategy to expand the reaction to the corresponding allylic alcohols. Although modular in design, the preparation of the discrete ion-paired Rh(sulfonesp) catalysts precludes the ability to quickly prepare a large library of …
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Molecular, Biochemical, and Toxicological Evaluation of Anticholinesterases for control of the Malaria Mosquito, Anopheles gambiae
… and cuticular penetration affect toxicity of carbamates in a manner dependent on the chemical structure. Structure activity relationships of side-chain branched N-methylcarbamates emphasized the importance of structural complementarity of ligands to the AChE catalytic active site and the …
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The Design and Utility of Chiral Derivatizing Agents
… resonance properties of selected diastereomeric carbamates and carbonates derived from several chloroformates and a number of amines and alcohols are reported. Several chloroformates exhibited favorable properties as manifested by the facile chromatographic separation of a number of derived …
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Gold(I) and Platinum(II)-Catalyzed Hydrofunctionalization of Allenes and Alkenes with Carbon and Nitrogen Nucleophiles
… undergo hydroamination with 1-alkenes. Various carbamates, arylamines, amide derivatives, sulfur-containing amide derivatives, and α-heteroatom compounds failed to react with 1-octene under gold(I)-catalyzed conditions.</p></p><p><p>A chiral bis(gold) phosphine complex catalyzed the …
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Evaluation of Novel Carbamate Insecticides for Neurotoxicity to Non-Target Species
… [R2 = 0.81] and level [P > 0.05] to the novel carbamates). Neurotoxic esterase (NTE) assay showed that the novel carbamates did not significantly inhibit NTE, inhibition of which underlies a significant hazard for anticholinesterases, especially organophosphates, in several nontarget vertebrate …
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Synthesis and characterization of high performance polytetrahydrofuran based polyurethane-urea and ionene elastomers
… based on carbamate-isocyanate interactions. The carbamates were generated principally from isocyanate functional prepolymers and tertiary alcohols. The carbamates were rearranged thermally and/or catalytically to produce amines which were rapidly converted to ureas. The effects of varying the …
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Glucose and Glucosamine Derivatives as Novel Low Molecular Weight Gelators
… as the starting materials. These include esters, carbamates, amides, and ureas. The structure and gelation relationship was analyzed to obtain guidelines for designing new LMWGs. Compound 1 is a simple derivative of D-glucose and its terminal alkynyl esters and saturated carbamates are effective …
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Studies of alpha-lithioamine synthetic equivalents: I. Elaboration of primary amines. II. Detection of an intermediate in the lithiation of a benzylic urea
… excess. Lithiation of N-tert-butyl-N-benzyl carbamates resulted in rearrangement to phenylglycine derivatives. These related investigations are also discussed.
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