- IMINOSUGARS USEFUL FOR THE TREATMENT OF VIRAL DISEASES
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Formula IA, ad their use for treating viral infections.
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Page/Page column 70
(2016/06/01)
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- A simplified approach to N- and N,N′-linked 1,2,4-triazoles by transamination
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A facile one-step procedure for the preparation of 4,4′-bis-1,2,4- triazole is reported. Direct transamination of N,N-dimethyl-formamide azine dihydrochloride by heating with 4-amino-1,2,4-triazole in refluxing benzene readily yields the target molecule in short duration of time with significant yield (73%). This catalyst-free method was extended to synthesise a series of 4-substituted 1,2,4-triazoles of potential interest in coordination chemistry. Georg Thieme Verlag Stuttgart.
- Naik, Anil D.,Marchand-Brynaert, Jacqueline,Garcia, Yann
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p. 149 - 154
(2008/09/20)
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- Synthesis and serotonergic activity of 3-[2-(pyrrolidin-1- yl)ethyl]indoles: Potent agonists for the h5-HT(1D) receptor with high selectivity over the h5-HT(1B) receptor
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The design, synthesis, and biological evaluation of a novel series of 3- [2-(pyrrolidin-1-yl)ethyl]-indoles with excellent selectivity for h5-HT(1D) (formerly 5-HT(1Dα)) receptors over h5-HT(1B) (formerly 5-HT(1Dβ)) receptors are described. Clinically effective antimigraine drugs such as Sumatriptan show little selectivity between h5-HT(1D) and h5-HT(1B) receptors. The differential expression of h5-HT(1D) and h5-HT(1B) receptors in neural and vascular tissue prompted an investigation of whether a compound selective for the h5-HT(1D) subtype would have the same clinical efficacy but with reduced side effects. The pyrrolidine 3b was initially identified as having 9-fold selectivity for h5-HT(1D) over h5-HT(1B) receptors. Substitution of the pyrrolidine ring of 3b with methylbenzylamine groups gave compounds with nanomolar affinity for the h5-HT(1D) receptor and 100-fold selectivity with respect to h5-HT(1B) receptors. Modification of the indole 5-substituent led to the oxazolidinones 24a,b with up to 163-fold selectivity for the h5-HT(1D) subtype and improved selectivity over other serotonin receptors. The compounds were shown to be full agonists by measurement of agonist-induced [35S]GTPγS binding in CHO cells expressed with h5-HT receptors. This study suggests that the h5-HT(1D) and h5-HT(1B) receptors can be differentiated by appropriate substitution of the ligand in the region which binds to the aspartate residue and reveals a large binding pocket in the h5-HT(1D) receptor domain which is absent for the h5-HT(1B) receptor. The compounds described herein will be important tools to delineate the role of h5-HT(1D) receptors in migraine.
- Sternfeld, Francine,Guiblin, Alexander R.,Jelley, Richard A.,Matassa, Victor G.,Reeve, Austin J.,Hunt, Peter A.,Beer, Margaret S.,Heald, Anne,Stanton, Josephine A.,Sohal, Bindi,Watt, Alan P.,Street, Leslie J.
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p. 677 - 690
(2007/10/03)
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- Azetidine, pyrrolidine and piperidine derivatives
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A class of substituted azetidine, pyrrolidine and piperidine derivatives are selective agonists of 5-HT1 -like receptors, being potent agonists of the human 5-HT1Dα receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT1Dα receptor subtype relative to the 5-HT1Dβ subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT1D receptor agonists.
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- 4-substituted 1,2,4-triazole derivatives
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A discrete class of 4-substituted 1,2,4-triazole derivatives are selective agonists of 5-HT 1 -like receptors and are therefore useful in the treatment of clinical conditions, in particular migraine and associated disorders, for which a selective agonist of these receptors is indicated.
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- The chemical evolution of N,N-dimethyl-2-[5-(1,2,4-triazol-4-yl)-1H-indol-3-yl]ethylamine (L-741,604) and analogues: Potent and selective agonists for 5-HT(1D) receptors
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Optimisation of a series of 5-(heterocyclyl)tryptamines led to the identification of the symmetrically substituted, N-4 linked 1,2,4-triazole as the best indole C-5 substituent for 5-HT(1D) receptor affinity and selectivity. The triazole (8) is the most potent and selective, orally bioavailable, 5-HT(1D) receptor agonist identified to date, showing an order of magnitude greater potency than the clinical compound sumatriptan with improved subtype selectivity.
- Sternfeld, Francine,Baker, Raymond,Broughton, Howard B.,Guiblin, Alexander R.,Jelley, Richard A.,Matassa, Victor G.,Reeve, Austin J.,Beer, Margaret S.,Stanton, Josephine A.,Hargreaves, Richard J.,Shepheard, Sara L.,Longmore, Jeanette,Razzaque, Zerin,Graham, Michael I.,Sohal, Bindi,Street, Leslie J.
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p. 1825 - 1830
(2007/10/03)
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- FT-IR and 13C-NMR Correlations for Some N-Substituted Azoles and Benzazoles
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The FT-IR (in carbon tetrachloride) and 13C-NMR (in deuterochloroform) spectra of six p-substituted aniline derivatives, as reference compounds, and nine 1-p-aminophenyl-azoles and benzazoles were recorded.The mesured spectral parameters from FT-IR were s
- Elguero, Jose,Gil, Manuel,Iza, Nerea,Pardo, Carmen,Ramos, Mar
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p. 1111 - 1119
(2007/10/02)
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- 4-Substituted 1,2,4-triazole derivatives
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4-substituted 1,2,4-triazole derivatives of formula I: wherein R represents a 2-(dimethylamino)ethyl group, or a group of formula (i) or (ii): or a salt or prodrug thereof;, are selective agonists of 5-HT1-like receptors and are therefore useful in the treatment of clinical conditions, in particular migraine and associated disorders, for which a selective agonist of these receptors is indicated.
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