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Showing 13 to 24 of 439 entries
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Conformational studies by dynamic NMR. 74.(1) stereomutations of the conformational enantiomers in peri-substituted 1-acylnaphthalenes.

The Journal of organic chemistry

Lunazzi L, Mazzanti A, Munoz Alvarez A.
PMID: 10814215
J Org Chem. 2000 May 19;65(10):3200-6. doi: 10.1021/jo991853g.

Naphthalenes bearing an acyl and a phenyl group in a peri relationship give rise to a pair of enantiomers in the temperature range where the rotations of the acyl group are slow. Such enantiomers were observed by means of...

Development of a multiple-class high-resolution gas chromatographic relative retention time model for halogenated environmental contaminants.

Analytical chemistry

Rayne S, Ikonomou MG.
PMID: 12641222
Anal Chem. 2003 Mar 01;75(5):1049-57. doi: 10.1021/ac020406p.

A predictive model for the relative gas chromatographic retention times (GC-RRTs) of the following nine classes of halogenated environmental contaminants was developed: polybrominated diphenyl ethers (PBDEs); polychlorinated diphenyl ethers (PCDEs); polychlorinated biphenyls (PCBs); polychlorinated naphthalenes (PCNs); polychlorinated dibenzo-p-dioxins (PCDDs);...

Calcium/Calmodulin Activation of Soybean Glutamate Decarboxylase.

Plant physiology

Snedden WA, Arazi T, Fromm H, Shelp BJ.
PMID: 12228492
Plant Physiol. 1995 Jun;108(2):543-549. doi: 10.1104/pp.108.2.543.

Recently, we provided preliminary evidence for calcium (Ca2+)/calmodulin (CaM) stimulation of plant glutamate decarboxylase (GAD; EC 4.1.1.15). In the present study, a detailed characterization of the phenomenon is described. GAD was partially purified from various soybean (Glycine max L....

Dissection of the Blue-Light-Dependent Signal-Transduction Pathway Involved in Gametic Differentiation of Chlamydomonas reinhardtii.

Plant physiology

Pan JM, Haring MA, Beck CF.
PMID: 12226393
Plant Physiol. 1996 Sep;112(1):303-309. doi: 10.1104/pp.112.1.303.

Gametogenesis of the green alga Chlamydomonas reinhardtii may be viewed as a two-step process that is controlled by the environmental cues of nitrogen deprivation and blue light. Initiation of gametogenesis is induced by nitrogen deprivation, resulting in mating-incompetent pregametes,...

Evidence for Opposing Effects of Calmodulin on Cortical Microtubules.

Plant physiology

Fisher DD, Gilroy S, Cyr RJ.
PMID: 12226434
Plant Physiol. 1996 Nov;112(3):1079-1087. doi: 10.1104/pp.112.3.1079.

Microtubule integrity within the cortical array was visualized in detergent-lysed carrot (Daucus carota L.) protoplasts that were exposed to various exogenous levels of Ca2+ and calmodulin (CaM). CaM appears to help stabilize cortical microtubules against the destabilizing action of...

Electrochemical synthesis of novel polypyrrole microstructures.

Chemical communications (Cambridge, England)

Qu L, Shi G.
PMID: 12585393
Chem Commun (Camb). 2003 Jan 21;(2):206-7. doi: 10.1039/b209245j.

Polypyrrole microstructures with unusual morphologies have been synthesized by direct electrochemical oxidation of pyrrole in beta-naphthalenesulfonic acid aqueous solution.

Degradation of substituted naphthalenesulfonic acids by Sphingomonas xenophaga BN6.

Journal of industrial microbiology & biotechnology

Stolz A.
PMID: 11423960
J Ind Microbiol Biotechnol. 1999 Oct;23(4):391-399. doi: 10.1038/sj.jim.2900725.

Sphingomonas xenophaga BN6 was isolated from the river Elbe as a member of a multispecies bacterial culture which mineralized 6-aminonaphthalene-2-sulfonate. Pure cultures of strain BN6 converted a wide range of amino- and hydroxynaphthalene-2-sulfonates via a catabolic pathway similar to...

Polychlorinated naphthalenes: an environmental update.

Environmental pollution (Barking, Essex : 1987)

Falandysz J.
PMID: 15093100
Environ Pollut. 1998;101(1):77-90. doi: 10.1016/s0269-7491(98)00023-2.

Polychlorinated naphthalenes (PCNs; CNs) form a complex mixture of up to 75 congeners containing from one to eight chlorine atoms per naphthalene molecule. Chloronaphthalenes are widespread global environmental pollutants which accumulate in biota. All chloronaphthalenes are planar compounds and...

Modified sampling and analysis method for large volatility range airborne polycyclic aromatic hydrocarbons (PAH) using gas chromatography-mass spectrometry.

Analytical and bioanalytical chemistry

Wybraniec S, De Jong AP.
PMID: 15048341
Anal Bioanal Chem. 1996 Oct;356(6):396-402. doi: 10.1007/s0021663560396.

A sampling method has been developed for the measurement for polycyclic aromatic hydrocarbons in ambient air by gas chromatography isotope dilution mass spectrometry. The method has been designed to measure the largest possible volatility range of PAHs including the...

Steady-state fluorescence polarization in planar lipid membranes. Experimental and theoretical analysis of the fluorophores 8-anilino-1-naphthalenesulfonate, 1,6-Diphenyl-1,3,5-hexatriene, dansyllysine-valinomycin and n-(9-anthroyloxy) fatty acids.

Biophysical chemistry

Frehland E, Kreikenbohm R, Pohl WG.
PMID: 17000423
Biophys Chem. 1982 Apr;15(1):73-86. doi: 10.1016/0301-4622(82)87018-x.

In continuation of earlier work, the steady-state fluorescence polarization in a globally oriented system of planar lipid membranes was analyzed experimentally and theoretically for the fluorophores 8-anilino-1-naphthalenesulfonate, 1,6-diphenyl-1,3, 5-hexatriene, dansyllysine-valinomycin and n-(9-anthroyloxy) fatty acids. The theoretical analyses of experiments...

Occupational exposure: Organochlorine compounds in blood plasma from potentially exposed workers. PCB, PCN, PCDD/PCDF, HCB and methylsulphonyl metabolites of PCB.

Environmental science and pollution research international

Weistrand C, Norén K, Nilsson A.
PMID: 19002410
Environ Sci Pollut Res Int. 1997;4(1):2-9. doi: 10.1007/BF02986256.

Concentrations of polychlorinated biphenyls (PCB), polychlorinated naphthalenes (PCN), polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), hexachlorobenzene and methylsulphonyl metabolites of PCB were determined in blood plasma from potentially exposed workers and controls. Three of the potentially exposed subjects had worked...

A highly selective cascade approach to diverse aromatic ring systems from simple aromatic aldehydes and propiolates.

Organic letters

Wang YG, Cui SL, Lin XF.
PMID: 16524313
Org Lett. 2006 Mar 16;8(6):1241-4. doi: 10.1021/ol060143b.

[reaction: see text] A new triethylamine-catalyzed cascade reaction of aromatic aldehydes with propiolates has been developed. This serial multi-bond-forming process furnishes diverse polycyclic aromatic hydrocarbons, including naphthalenes, phenanthrenes, benzofurans, and 2,3,9,9a-tetrahydronaphtha[2,3-b]furans. The chemical outcome of the process depends on...

Showing 13 to 24 of 439 entries