Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"ephedrine"”.
-
The yeast mediated synthesis of the l-ephedrine precursor, l-phenylacetylcarbinol, in an organic solvent
l-Ephedrine and d-pseudoephedrine are important pharmaceutical products commonly found in anti-asthmatic formulations, nasal decongestant mixtures and sinus preparations. d-Pseudoephedrine is the active ingredient in "Sudafed". l-Ephedrine is currently synthesised in a three step process. The first …
-
A randomised comparison of bolus phenylephrine and ephedrine for the management of spinal hypotension in patients with severe preeclampsia and a non-reassuring fetal heart rate trace
… undergoing elective caesarean delivery show that ephedrine used for spinal hypotension is associated with increased fetal acidosis compared with phenylephrine. This has not been investigated prospectively in severe preeclampsia. Methods: Patients with severe preeclampsia requiring caesarean …
-
Maternal and cardiac output response to vasopressor therapy during spinal anaesthesia for Caesarean Section in severe preeclampsia
… the haemodynamic effects of the vasopressors ephedrine and phenylephrine during spinal anaesthesia. Methods: Thirty nine women with treated severe preeclampsia presenting for spinal anaesthesia for caesarean section for a maternal indication, were studied. Baseline maternal haemodynamics were …
-
Methodology studies on the synthesis of chiral, non-racemic aza-quaternary centres
… part studies are directed towards developing ephedrine -derived stoichiometric chiral aminating reagents in enantioselective nitrogen transfer, while in the second part of the Chapter the emphasis shifts to using an organocatalysis approach involving an ephedrine -hydrazide organocatalyst in …
-
Haemodynamic consequences of Spinal Anaesthesia for non-emergency Caesarean section
… haemodynamic effects of the vasoactive agents ephedrine, phenylephrine and oxytocin during spinal anaesthesia for caesarean section in healthy patients and in patients with preeclampsia, and short term neonatal outcome after spinal anaesthesia in patients with severe preeclampsia. Research …
-
Charge and temperature effects on biomolecule hydration: an experimental and computational investigation
… tryptamine, 2-amino-1-phenylethanol and ephedrine. In every case, there are significant differences between spectra obtained at different temperatures as well as those containing different metal ions. The argon tagging method, which was used to facilitate the temperature comparisons, had …
-
A Study of the Interaction of Copper with Selected Psychotropic Compounds
… produce varying symptoms from acute anxiety, (ephedrine) to a toxic psychosis, (amphetamine) so resembling schizophrenia that it could be used as a "model schizophrenia". The latter class could be used as a therapeutic control of the symptoms of schizophrenia, chlorpromazine being the best …
-
OPPORTUNITIES AND CHALLENGES OF BIOCATALYSIS IN PHARMACEUTICAL SCIENCES: DEVELOPING TAILORED BIOCATALYSTS FOR SYNTHETIC APPLICATIONS
… established for the synthesis of (1S)-nor(pseudo)ephedrine analogues. The cascade was further optimized by covalent enzyme immobilization, enabling enhanced stability, efficient reuse, and integration into continuous-flow processes. This resulted in improved productivity, excellent …
-
Structure-property relationships and salt selection for functional organic materials
… elucidated.;These were: 1S2R-(+)-methylephedrine-NPO, 2-amino-3-pyridinecarboxaldehyde -NPOH, 4-acetylpyridine-NPOH, 2-aminobenzylamine-NPO, dimethylpiperidine-NPO(H2O), dipropylenetriamine-NPO, 1S2R-(+)-ephedrine-NPO(MeCN)2, ethanolamine-NPO, n-methylpyrollidine-NPO-NPOH, Rhodamine …
-
An Evaluation Of UHPLC-MS Technology Encompassing Elevated Temperatures, Low Viscosity Operation and Recently Developed Stationary Phase Materials
… addressed by comparing the performance merits of ephedrine-substances separated by both reversed-phase and HILIC noting that the latter was far superior. Arguably the biggest disadvantage with HILIC is the reliance on acetonitrile based mobile phases. An in-depth evaluation of acetone as an …
-
Microfluidic platforms for solid form screening of pharmaceutical parent compounds
… with several model compounds namely, naproxen, ephedrine, indomethacin, caffeine, theophylline, and tamoxifen. The microfluidic platforms developed here find immediate application in the pharmaceutical industry, as they require cheap and readily available external peripherals, such as pipettes …
-
A statistical study of the relations of neurasthenic, dyspeptic, and allergic symptoms
… and with the administration of small doses of ephedrine. The subject subsequently passes all his courses with a grade of B. Another subject with marked emotional instability and depression and most of the other neurasthenic symptoms displays also the physiological symptoms of intestinal allergy …
-
Part I: Circular dichroism studies of optically active charge transfer complexes. Part II: vapor phase and solvent dependence circular dichroism studies of some terpenes, α-phenylethanol, and α-phenylethylamine
… (1S,2S)-(+)-pseudoephedrine, (S)-(-)-ephedrine, (S)-(-)-α-phenylethylamine, (S)-(+)-amphetamine, (S)-(+)-methamphetamine, (S)-(+)-2-amino-1-propanol.</p> <p>A correlation has been found between measured ellipticities and the spectroscopic nature of the CT transition, …
-
The Grey Zone in Doping
… in the daily diet, such as caffeine and ephedrine, and are only restricted when large urinary concentrations indicate the deliberate intake of this substance to enhance performance. In an attempt to run faster, jump higher or throw further athletes are always seeking for means to …