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Synthesis of new stereoisomeric nitrate esters derived from isosorbide-mononitrates
(Freund Publishing House Ltd, London, 2001)
A synthesis of diastereomeric (7R) 7-endo-nitrooxy-3-oxo-2,5,9-trioxabicyclo[4.3.0]nonane (4b) and (7S) 7-exo-nitrooxy-3-oxo-2,5,9-trioxabicyclo[4.3.0] (7b) is described using D-glucitol as a starting compound. Bicyclic ...
Derivative spectrophotometric method for determination of acidity constants of single step acid-base equilibria
(Elsevier Science BV, Amsterdam, 2001)
A general derivative spectrophotometric method for determination of acidity constants is developed. The method appears suitable in cases when classical spectrophotometry cannot be employed due to little differences in the ...
Thin-layer chromatography of several antihypertensive drugs from the group of angiotensin converting enzyme inhibitors / Tankoslojna hromatografija nekih antihipertenziva iz grupe angiotenzin konvertujućih enzim inhibitora
(Srpsko hemijsko društvo, Beograd, 2001)
A rapid and simple method for the chromatographic separation of pharmacologically active components contained in some antihypertensive drugs has been developed employing thin-layers of silica gel and polyacrylonitrile ...
Spectrophotometric and HPLC determination of fleroxacin in tablets
(Govi-Verlag Pharmazeutischer Verlag Gmbh, Eschborn, 2001)
Abstract
The paper describes and compares spectrophotometric and HPLC determination of fleroxacin in commercial tablets. The optimum conditions for spectrophotometric assay were found to be at pH < 3.5 (0.1 M HCl) at a ...
The high-performance thin-layer chromatographic determination of dexamethasone and xylometazoline in nasal drops containing different preservatives
(Springer Nature, 2001)
A simple and reliable HPTLC method has been developed and validated for the determination of dexamethasone (as the sodium phosphate salt) and xylometazoline (as the chloride). Assay of the compounds was performed on silica ...
Quantitative analysis of analgoantipyretics in dosage form using planar chromatography
(Pergamon-Elsevier Science Ltd, Oxford, 2001)
In the therapy of pain of weaker genesis, frequently used drugs usually represent a mix of analgoantipyretics of different chemical structures, mostly derivatives of salicylic acid, pyrazolone and p-aminophenol as well as ...
Chemical compositions of two wild species of the genus Salvia L. from Yugoslavia: Salvia aethiopis and Salvia verticillata
(Allured Publ Corp, Carol Stream, 2001)
We compared two wild Salvia species found in Yugoslavia: S. aethiopis L. and S. verticillata L. Both oils contained beta-caryophyllene as main constituent (27.5% and 13.3%, respectively), but differed by the presence of ...
Chemical composition of the essential oil of the species Artemisia eriantha Ten. (Asteraceae) from Yugoslavia
(Taylor & Francis Inc, Philadelphia, 2001)
The essential oil of Artemisia eriantha Ten. (Asteraceae) from two localities on the mountain Durmitor in Montenegro (Yugoslavia) was studied using GC/MS. The oil yield was 0.7% and the major constituents were identified ...
Variability of essential oils of Satureja montana L. and Satureja kitaibelii Wierzb. ex Heuff. from the central part of the Balkan peninsula
(Pergamon-Elsevier Science Ltd, Oxford, 2001)
The results of the essential oil composition confirm that there are differences between populations within the same subspecies (Satureja montana ssp. montana), between the subspecies (Satureja montana ssp. montana and ...
Synthesis of new stereoisomeric nitrate esters derived from isosorbide-mononitrate II: Bicyclic delta-lactams and tetrahydrofuran derivatives
(Georg Thieme Verlag, 2001)
The synthesis of the diastereomeric nitrate esters (3R,4R)-(2-hydroxy-4-nitrooxytetrahydrofuran-3-yloxy)acetonitrile (5b) and (3R,4S)-(2-hydroxy-4-nitrooxytetrahydrofuran-3-yloxy)acetonitrile (9) was achieved by the Beckmann ...