Results 111 to 120 of about 53,376 (301)

Racemization and Epimerization [PDF]

Science, 1971
W T, Smith, K A, Kvenvolden
openaire   +2 more sources

X-ray Crystallography at 170 K of Racemic 2,2'-Dimethoxy-9,9'-biacridine and 1H NMR Study of 2,2'-Diacetoxy-9,9'-biacridine

Molecules, 1999
Three derivatives of 9,9'-biacridine, 2,2'-dihydroxy, 2,2'-dimethoxy and 2,2'-diacetoxy have been prepared. The crystal structure of racemic 2,2'-dimethoxy-9,9'-biacridine CHCl3 1:1 complex has been determined and shows an almost perpendicular ...
Albert Virgili, José Elguero, Marta Fierros, Concepción Foces- Foces, Antonio L. Llamas-Saiz, Jean-Pierre Galy, Tuan Lormier, Gérard Boyer   +7 more
doaj   +1 more source

Stereoselective pharmacokinetics of ketamine and norketamine after racemic ketamine or S-ketamine administration during isoflurane anaesthesia in Shetland ponies [PDF]

, 2007
BACKGROUND: The arterial pharmacokinetics of ketamine and norketamine enantiomers after racemic ketamine or S-ketamine i.v. administration were evaluated in seven gelding ponies in a crossover study (2-month interval).
Theurillat, R., Landoni, María Fabiana, Landoni, M F, Knobloch, M, Thormann, Wolfgang, Larenza, M P, Kronen, P W, Larenza, M. P., Schatzmann, U., Theurillat, R, Levionnois, O. L., Schatzmann, U, Kronen, P. W., Thormann, W, Knobloch, M., Levionnois, O L   +15 more
core   +1 more source

Synthesis of racemic 1,2-diolein

Journal of Lipid Research, 1965
1,2-Diolein has been synthesized by protecting the 3-position of glycerol during acylation by means of the pyranyl ether linkage. This linkage is easily broken under conditions leading to very limited isomerization of the diglyceride.
Lennart Krabisch, Bengt Borgström
doaj   +1 more source

Clinical advances in racemic epinephrine for pediatric croup: a mini-review of evidence and practice

Frontiers in Pediatrics
This mini-review critically evaluates the contemporary evidence regarding racemic epinephrine's role in pediatric croup management. As the pharmacological mainstay for acute airway obstruction, racemic epinephrine demonstrates rapid efficacy through dual
Yu-tong Hou, Qi Shi, Lin Zhang, Qian Cheng   +3 more
doaj   +1 more source

Complete transfer of chirality in an intramolecular, thermal [2 + 2] cycloaddition of allene-ynes to form non-racemic spirooxindoles

Beilstein Journal of Organic Chemistry, 2011
A thermal [2 + 2] cycloaddition reaction of allene-ynes has been used to transform chiral non-racemic allenyl oxindoles into chiral non-racemic spirooxindoles containing an alkylidene cyclobutene moiety.
Kay M. Brummond, Joshua M. Osbourn
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of new polymorph of racemic 2-phenylbutyramide

Acta Crystallographica Section E: Crystallographic Communications, 2019
A new polymorph of the title compound, C10H13NO, was obtained by recrystallization of the commercial product from a water/ethanol mixture (1:1 v/v). Crystals of the previously reported racemic and homochiral forms of 2-phenylbutyramide were grown from ...
Sergei Rigin, Beatrice Armijo, Arcadius V. Krivoshein, Marina Fonari, Tatiana Timofeeva   +4 more
doaj   +1 more source

Biocatalytic enantioconvergent separation of racemic mandelic acid [PDF]

, 2019
Chiral mandelate was produced by biocatalytic enantioconvergent separation of racemic mandelic acid. One pot enantioconvergent synthesis of (R)-mandelic acid ester from racemic mandelic acid was achieved by a novel aqueous/organic two-phase system with ...
Kang, SH, Lee, KY, Lee, SB, Choi, WJ
core   +1 more source

Racemic epinephrine compared to salbutamol in hospitalized young children with bronchiolitis; a randomized controlled clinical trial [ISRCTN46561076]

BMC Pediatrics, 2005
Background Bronchiolitis is the most common cause of lower respiratory tract illness in infancy, and hospital admission rates appear to be increasing in Canada and the United States. Inhaled beta agonists offer only modest short-term improvement.
LeBlanc John C, Smith Michael B, Langley Joanne M, Joudrey Heather, Ojah Cecil R, Pianosi Paul   +5 more
doaj   +1 more source

Coupling Viedma ripening with racemic crystal transformations : mechanism of deracemization [PDF]

, 2017
It has been recently observed that coupling Viedma ripening with a seeded in situ metastable racemic crystal to conglomerate transformation leads to accelerated and complete deracemization: crystal transformation-enhanced deracemization.
Ter Horst, Joop, Christos Xiouras, Stefanidis, Georgios D., Stefanidis, Georgios, Van Gerven, Tom, Joop H. Ter Horst, Xiouras, Christos, Tom Van Gerven, Georgios D. Stefanidis, Ter Horst, Joop H.   +9 more
core   +1 more source