Journal ArticleDOI
Degenerate ring transformations in heterocyclic systems
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This article is published in Journal of Heterocyclic Chemistry.The article was published on 2000-05-01. It has received 29 citations till now. The article focuses on the topics: Ring (chemistry).read more
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Journal ArticleDOI
Recent Developments in the Synthesis, Chemistry and Applications of the Fully Unsaturated 1,2,4-Oxadiazoles:
TL;DR: In this article, a review of the development of the fully unsaturated 1,2,4-oxadiazole nucleus is presented, covering the years 1995-2000, including solid phase methodologies, chemistry and applications.
Journal ArticleDOI
Recent Advances in Ring Transformations of Five-Membered Heterocycles and Their Fused Derivatives
TL;DR: Ring transformations of five-membered heterocycles and their benzologues for the recent 10 years are discussed and reviewed in this paper, where reaction mechanisms of the most interesting ring transformations are also discussed.
Journal ArticleDOI
Synthesis and ring transformation of substituted S-(1-phenylpyrrolidine-2-ones-3-yl)isothiuronium salts to substituted 2-imino-5-[2-(phenylamino)ethyl]thiazolidin-4-ones
TL;DR: Substituted S-(1-phenylpyrrolidin-2-on-3-yl)isothiuronium salts in weakly basic media undergo intramolecular recyclisation reaction in which the γ-lactam cycle is split and a thiazolidine cycle is formed as discussed by the authors.
Journal ArticleDOI
Reaction of 1-substituted 3,5-diamino-1,2,4-triazoles with β-keto esters: synthesis and new rearrangement of mesoionic 3-amino-2H-[1,2,4]triazolo-[4,3-a]pyrimidin-5-ones
TL;DR: In this article, a new type of rearrangement in the azolopyrimidine series was proposed, which is based on the reaction conditions of enaminoesters with β-keto esters.
Book ChapterDOI
1,2,4-Oxadiazoles
TL;DR: The uses of 1,2,4-oxadiazoles include those as agonists at muscarinic receptors, 5-hydroxytryptamine (5-HT) receptor antagonists, benzodiazepine receptor agonists, potent antagonists of the (serotonin) 5-HT1B/D receptors, muscarinates ‘superagonists’, selective inhibitors of human neutrophil elastase, and as active and selective A2B adenosine receptor antagonists.
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Journal ArticleDOI
Molecular rearrangements of five-membered ring heteromonocycles
TL;DR: In this article, the authors classified molecular rearrangements of five-membered ring heterocycles into five categories based on the number of participating side-chain atoms: Dimroth rearrangement, Dimroth contraction-ring expansion (DRCE), Dimroth expansion, Cornforth, Boulton-Katritzky, and bond-switch rearranging.
Journal ArticleDOI
Isolation procedure and some properties of the bromoperoxidase from the seaweed Ascophyllum nodosum
Ron Wever,H. Plat,Eize de Boer +2 more
TL;DR: A large-scale isolation procedure for bromoperoxidase from the brown alga Aseophyllum nodosum is described in this paper, where the enzyme showed one major band (40 kDa) after polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulphate.
Journal ArticleDOI
Heterocyclic rearrangements. Part X. A generalised monocyclic rearrangement
TL;DR: A new general class of rearrangements of substituted azoles (III)→(IV) has been recognized, scattered examples from the literature are collated, and further examples described.