Search Within
Applied Filters:
Showing 1-25 of 25 results for "


" within Papers
Nidhin Paul et al.
Bioorganic & medicinal chemistry letters, 22(4), 1643-1648 (2012-01-27)
A series of phenoxy linked bisquinoline derivatives were synthesised from the Friedlander annulation of 2-(4-acetylphenoxy)-1-aryl-1-ethanones with 2-aminobenzophenone in good yields using (±)-camphor-10-sulfonic acid (CSA) as the catalyst. These compounds were screened for their in vitro activity against Mycobacterium tuberculosis H37Rv...
Alexei V Caramyshev et al.
Biomacromolecules, 8(8), 2549-2555 (2007-07-17)
Micellar peroxidase-catalyzed synthesis of chiral polyaniline (PANI) in the presence of dodecylbenzenesulfonic acid (DBSA) was developed. The effect of DBSA concentration on the catalytic efficiency of horseradish and palm tree peroxidases was examined. Favorable conditions for the enzymatic synthesis of...
C Pettersson et al.
Journal of chromatography, 204, 179-183 (1981-01-16)
A high-performance liquid chromatographic method for the separation of optical isomers (enantiomers) of amines is described. It is based on ion-pair chromatography with a chiral counter ion in a system with an organic mobile phase and an adsorbing stationary phase....
G Li et al.
Se pu = Chinese journal of chromatography, 17(2), 215-216 (2003-01-29)
Two chiral aromatic alcohol amino drugs, Labarol and Bataroc, were resolved by thinlayer chromatography (TLC) on the silica gel GF254 plates (2.5 cm x 10 cm), by using the ammonium-D-10-camphorsulfonate (CSA) as chiral ion-pair interaction agent which was added to...
Redetermination of the extinction coefficient of camphor-10-sulfonic acid, a calibration standard for circular dichroism spectroscopy.
Andrew J Miles et al.
Analytical biochemistry, 335(2), 338-339 (2004-11-24)
Electrospun polyaniline fibers as highly sensitive room temperature chemiresistive sensors for ammonia and nitrogen dioxide gases.
Zhang Y, et al.
Advances in Functional Materials, 24(25), 4005-4014 (2014)
Determination of 10-camphorsulphonates in pharmaceutical formulations by high-performance liquid chromatography.
C Pierron et al.
Journal of chromatography, 511, 367-372 (1990-07-06)
Yimin Hua et al.
Journal of mass spectrometry : JMS, 45(12), 1394-1401 (2010-11-03)
Chemically modified silicon nanoparticles were applied for the laser desorption/negative ionization of small acids. A series of substituted sulfonic acids and fatty acids was studied. Compared to desorption ionization on porous silicon (DIOS) and other matrix-less laser desorption/ionization techniques, silicon...
1, 3-Diamine-Derived Bifunctional Organocatalyst Prepared from Camphor.
Ricko S, et al.
Advanced Synthesis & Catalysis, 358(23), 3786-3796 (2016)
[The expectorant Solucampher: effect on the tracheal clearing velocity in chronic bronchitis].
J A Nakhosteen et al.
ZFA. Zeitschrift fur Allgemeinmedizin, 59(9), 36-38 (1983-03-31)
Szu Heng Liu et al.
Journal of synchrotron radiation, 17(6), 761-768 (2010-10-27)
A synchrotron-radiation-based circular-dichroism end-station has been implemented at beamline BL04B at the National Synchrotron Radiation Research Center (NSRRC) in Taiwan for biological research. The design and performance of this compact end-station for measuring circular-dichroism spectra in the vacuum-ultraviolet region are...
A Bielejewska et al.
Journal of chromatography. A, 1083(1-2), 133-140 (2005-08-05)
This paper describes the modification of Chiralcel OD column properties by adsorption of (+) or (-) camphorsulfonic acids (CSAs) used as additives to the mobile phase. The effects on retention, selectivity and efficiency, of adsorption of (+) and (-) CSAs...
An efficient resolution of (?)-S-methyl-S-phenylsulfoximine with (+)-10-camphorsulfonic acid by the method of half-quantities.
Brandt J and Gais HJ.
Tetrahedron Asymmetry, 8(6), 909-912 (1997)
T. Shiraiwa et al.
Bulletin of the Chemical Society of Japan, 64, 3729-3729 (1991)
[D-camphor-beta-sulfonic acid as an ion-pair reagent for the determination of biogenic amines and their metabolites in the rat brain by reverse phase high performance liquid chromatography].
X R Xu et al.
Zhongguo yao li xue bao = Acta pharmacologica Sinica, 8(2), 113-117 (1987-03-01)
Chen Liu et al.
Organic letters, 13(10), 2638-2641 (2011-04-23)
A novel ion pair catalyst containing a chiral counteranion can be readily derived by simply mixing cinchona alkaloid-derived diamine with chiral camphorsulfonic acid (CSA). A mixture of 9-amino(9-deoxy)epi-quinine 8 and (-)-CSA was found to be the best catalyst with matching...
Bala Kishan Gorityala et al.
Bioorganic & medicinal chemistry letters, 19(11), 3093-3095 (2009-04-29)
A mild and efficient synthesis of pseudoglycosides has been developed using metal free (S)-camphorsulfonic acid. (S)-CSA acts as an excellent catalyst for conversion of 2,4,6-tri-O-acetyl-D-glucal to 2,3-unsaturated O-glycosides. A wide range of biologically active natural products, alcohols and thiols could...
P.J. Reider et al.
The Journal of Organic Chemistry, 52, 955-955 (1987)
Suh-Jen Jane Tsai et al.
Journal of chromatography. A, 1218(3), 524-533 (2010-12-24)
An effective method has been developed for quantitative determination of six bile acids including lithocholic acid (LCA), deoxycholic acid (DCA), chenodeoxycholic acid (CDCA), hydodeoxycholic acid (HDCA), cholic acid (CA) and ursodeoxycholic acid (UDCA) in biological tissues including pig liver, pig...
Chen Liu et al.
Organic letters, 12(10), 2278-2281 (2010-04-24)
The combination of 9-amino-9-deoxy-epi-cinchonine and (+)-CSA resulted in a novel primary amine-based organocatalyst for effective iminium activation of alpha,beta-unsaturated ketones. Such a catalytic system could catalyze the conjugate addition of nitroacetate to enones in a highly enantioselective manner, affording the...
Anne-Catherine Servais et al.
Electrophoresis, 25(16), 2701-2710 (2004-09-08)
The enantiomeric separation of a series of basic pharmaceuticals (beta-blockers, local anesthetics, sympathomimetics) has been investigated in nonaqueous capillary electrophoresis (NACE) systems using heptakis(2,3-di-O-methyl-6-O-sulfo)-beta-cyclodextrin (HDMS-beta-CD) in combination with potassium camphorsulfonate (camphorSO3-). For this purpose, a face-centered central composite design with...
Per J Garegg et al.
Carbohydrate research, 337(6), 517-521 (2002-03-14)
The transglucosidations of methyl 4-O-methyl-alpha- and -beta-D-glucopyranoside in ethanolic camphor-10-sulfonic acid, and of ethyl 4-O-methyl-alpha- and -beta-D-glucopyranoside in methanolic camphor-10-sulfonic acid, have been studied. Samples were removed at intervals and the proportions of the glucosides determined by GC of their...
A. Lore et al.
Journal of Liquid Chromatography, 14, 2065-2065 (1991)
Kaoru Nobuoka et al.
Physical chemistry chemical physics : PCCP, 9(44), 5891-5896 (2007-11-09)
We directly observe the interaction between 1-butyl-3-methylimidazolium (bmim) or 1-butyl-2,3-dimethylimidazolium (bm(2)im) and the solute, ethyl acrylate (EA), which is the popular dienophile in the Diels-Alder reaction and an H-bonding acceptor, by using specially designed electrospray mass spectrometry. In imidazolium ionic...
A Kumar et al.
Nanotechnology, 21(17), 175102-175102 (2010-04-02)
Polyaniline (PAni) nanofibers doped with HCl and CSA have been irradiated with 90 MeV O(7+) ions with fluence of 3 x 10(10), 3 x 10(11) and 1 x 10(12) ions cm(-2). TEM micrographs show a decrease in the fiber diameter...