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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Pyrazoline"”.
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Synthesis of pyrazoline derivatives and an examination of their local anaesthetic activity
(1) From p-alkoxy and m-p-dialkoxy benzylidene acetones, utilising the Mannich reaction, a series of unsaturated alkyl amino ketones of the type (I)
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NMR STRUCTURAL INVESTIGATIONS OF AQUATIC HUMIC SUBSTANCES (PYRAZOLINE, 1,3-DIPOLAR ADDITION, NITROGEN-15).
… conclusion that the cycloadduct was an N-methyl pyrazoline. Evidence is presented that carbon methylation occurs to a large extent during the CH₃I/NaH step. The derivatization of ketone and/or quinone groups with methoxylamine for the purpose of viewing these groups as the N-OCH₄ derivatives in …
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Stereochemistry of the Allene-Forming Cycloelimination of 4-Diazo-3,5-Diethyl-3,5-Dimethyl-1-Pyrazoline
… course of the decomposition of diazopyrazoline 1a to 3,5-dimethyl-3,4-heptadiene (2). To achieve this goal, a stereospecific synthesis of 1a which would permit its optical resolution was devised. Cyclization of tosylhydrazine and 4,5-epoxy-5-methyl-3-heptanone (3) provides a mixture …
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ΜΕΛΕΤΗ ΟΞΕΙΔΩΣΗΣ ΟΞΙΜΙΝΙΚΩΝ ΚΑΙ ΙΜΙΝΙΚΩΝ ΠΑΡΑΓΩΓΩΝ ΚΑΡΒΟΝΥΛΙΚΩΝ ΕΝΩΣΕΩΝ
… (LTA) RESULTED MAINLY IN PYRAZOLE- AND PYRAZOLINE - 1,2-DIOXIDES. THE EXACT TYPE OF THE N-OXIDE FORMED, DEPENDS ON THE SUBSTITUENTS ON THE 2-POSITION OF THE DIOXIME. FURTHERMORE, INFLUENCE IS ALSO EXERCISED BY ALKYL OR ARYL GROUPS ADJACENT TO THE =NOH MOIETY. DEOXYGENATION OF THE ABOVE …
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Antiprotozoal quinolines containing electrophilic moieties
… as thiosemicarbazone, a,β-unsaturated ketone and pyrazoline moieties were appended.
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The effects of phenylbutazone on a strain of fibroblasts cultivated in vitro
… Stenzyl during his investigation on pyrazole and pyrazoline derivatives. Although these compounds had been studied during the previous fifty years, the pharmacological properties were only recently recognized. It has been used clinically since 1952.</p><p>Two other pharmaceutical agents of the …
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Design and synthesis of new potential anticancer agents and high-selective A2B antagonists
… this category, several isatin-thiazolinone-pyrazoline hybrids were synthesized. Some of them were submitted to biological assays, demonstrating good activity toward different solid tumour cell-lines. In the second class of compounds, the synthetic efforts were combined to computational tools …
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ΜΕΛΕΤΗ ΑΝΤΙΔΡΑΣΕΩΝ 1,3-ΔΙΠΟΛΙΚΗΣ ΚΥΚΛΟΠΡΟΣΘΗΚΗΣ ΣΕ ΕΤΕΡΟΚΥΚΛΙΚΑ ΣΥΣΤΗΜΑΤΑ
… WITH NUCLEOPHILES LEADS TO ISOXAZOLINE OR PYRAZOLINE A-AMINOACID DERIVATIVES. ESPECIALLY, CLEAVAGE REACTION WITH GLYCINE ETHYLESTER RESULTED DIPEPTIDES CONTAINING HETEROCYCLIC RING. IN A COMPARISON WITH THE ABOVE STUDIED DIPOLAROPHILES, CYCLOADDITIONS OF METHYL-(Z)- AND (E)-A- BENZAMIDO- …
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Synthesis and Antimalarial evaluation of Gold Thiosemicarbazone Complexes and Polyamine-Thiosemicarbazone Dendrimers
… using Schiff base chemistry. On the other hand pyrazoline analogues were obtained in two steps using both Mannich and Schiff base chemistries. A range of gold(I) TSC complexes were achieved by reacting TSCs with the starting gold(I) materials, [AuI(PEt3P)Cl] (4.2), [AuI(THT)Cl] (4.3), …