60049-83-4Relevant academic research and scientific papers
FLUOROGENIC PH SENSITIVE DYES AND THEIR METHOD OF USE
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Page/Page column 91, (2008/12/06)
A new class of pH sensitive fluorescent dyes and assays relating thereto are described. The dyes and assays are particularly suited for biological applications including phagocytosis and monitoring intracellular processes. The pH sensitive fluorescent dyes of the present invention include compounds of Formula (I), wherein the variables are described throughout the application.
Ce(SO4)2-mediated nitration of N,N-dialkylanilines with NaNO2 in water
Yang, Xianghua,Xi, Chanjuan
, p. 3381 - 3392 (2008/02/12)
Ce(SO4)2-mediated nitration of N,N-dialkylanilines with NaNO2 using water as the solvent has been achieved in good to excellent yields. The nitrating reaction proceeded smoothly at ambient temperature. Copyright Taylor & Francis Group, LLC.
Transnitrosation by N-aryl-N-nitrosoureas; NO-carrying O-nitrosoisourea
Tanno,Sueyoshi,Miyata
, p. 1760 - 1767 (2007/10/02)
Transfer of nitroso groups, so-called transnitrosation, from aromatic N-nitroso compounds such as N-nitrosoureas, N-nitrosamides and N-nitrosamines, to aromatic amines or ureas was observed under non-acidic conditions at room temperature. Sterically hindered 3,3-dibenzyl-1-(4-tolyl)-1-nitrosourea (1a) rapidly nitrosates indoline, N-alkylanilines or 3-methyl-1-(4-tolyl)urea to give their N-nitroso derivatives. In the case of N,N-dimethylanilines, nitrosative demethylation occurs to give N-methyl-N-nitrosanilines. The transnitrosation is accelerated by electron-releasing groups on the nitroso acceptors, N-alkylanilines. The transnitrosation mechanism is considered to be as follows: N-nitrosourea (1) thermally decomposes to nitric oxide and ureidyl radical followed by formation of an O-nitrosoisourea intermediate (10), which acts as an NO-carrying agent and nitrosates anilines or ureas.
Structure-activity relationship of N-[2-(dimethylamino)-6-[3-(5-methyl-4- phenyl-1H-imidazol-1-yl)propoxy]phenyl]-N'-pentylurea and analogues. Novel potent inhibitors of acyl-CoA:cholesterol O-acyltransferase with antiatherosclerotic activity
Kimura,Takase,Hayashi,Tanaka,Ohtsuka,Saeki,Kogushi,Yamada,Fujimori,Saitou,Akasaka
, p. 1630 - 1640 (2007/10/02)
We have discovered N-butyl-N'-[2-(dimethylamino)-6-[3-(4-phenyl-1H- imidazol-1-yl)propoxy]phenyl]urea (4), a novel, potent, and systemically bioavailable inhibitor of ACAT (acylCoA:cholesterol O-acyltransferase). The structure-activity relationships (SARs) of this lead compound 4 were investigated by systematic modification of four regions in the molecule. The compounds prepared in this study were tested for in vitro inhibitory activity toward both aortic and intestinal ACATs, and selected compounds were further tested for in vivo hypocholesterolemic activity. The studies not only resulted in the discovery of N-[2-(dimethylamino)-6-[3-(5-methyl-4-phenyl- 1H-imidazol-1-yl)propoxy]phenyl]-N'-pentylurea (24), with potent activity and moderate plasma level after oral administration, but also revealed the SAR in each modified region. Four compounds (4, 13, 14, 24) were further selected for testing of in vivo antiatherosclerotic activity; 4, 13, and 24 reduced atherosclerotic plaque development to 38-45% of the control value in terms of area, while 14 did not have a significant antiatherosclerotic effect.
AROMATIC TERTIARY AMINES AND n-BUTYL NITRITE
Varardo, Giancarlo,Giumanini, Angelo G.,Strazzolini, Paolo
, p. 4303 - 4332 (2007/10/02)
The reaction between alkyl nitrites, particularly n-butyl nitrite, and tertiary aromatic amines under a variety of experimental conditions promptly yielded products of N-dealkylation-N-nitrosation, ring nitration, ipso-substitution and, occasionally, combinations of these processes.Aminoethers were detected as final products and intermediates on the way to N-nitrosations.Reaction pathways are suggested for some of the observed behaviours on the basis of experimental evidences whereas other alternatives are discarded.
Oxidation of Aryldialkylamines with Cerium(IV) Ammonium Nitrate and Thallium(III) Nitrate
Galliani, Guido,Rindone, Bruno
, p. 828 - 832 (2007/10/02)
Nine alkylmethylanilines were oxidised with cerium(IV)ammonium nitrate and thallium(III) nitrate in acetic acid, acetonitrile, and methanol.Reaction products were those deriving from demethylation, dealkylation, and aromatic nitration at positions ortho and para to the amino-group.The ratio between demethylation and dealkylation and between them and aromatic nitration is discussed in terms of (i) the oxidising power and electrophilicity of the reagent and (ii) the co-ordinative properties of the solvent.
