1074-59-5Relevant articles and documents
-Bromo- -(5-imidazolyl)propionic acid and its reaction with cysteine.
Yankeelov Jr.,Jolley
, p. 159 - 163 (1972)
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SMALL MOLECULE VE-PTP INHIBITORS
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Page/Page column 232, (2022/01/05)
The present disclosure relates to compounds capable of inhibiting vascular endothelial protein tyrosine phosphatase (VE-PTP). These compounds are also capable of activating Tie2 receptor-mediated signaling. The present disclosure also relates to pharmaceutically acceptable salts of said compounds, to pharmaceutical compositions comprising such compounds and/or pharmaceutically acceptable salts thereof, and to the use of such compounds, pharmaceutically acceptable salts thereof, and/or pharmaceutical compositions comprising the same in treating diseases and/or conditions mediated by VE-PTP signaling, such as those mediated by Angiopoietm/Tie2 signaling.
Triazole ligands reveal distinct molecular features that induce histaine H4 receptor affinity and subtly govern H4/H3 subtype selectivity
Wijtmans, Maikel,De Graaf, Chris,De Kloe, Gerdien,Istyastono, Enade P.,Smit, Judith,Lim, Herman,Boonnak, Ratchanok,Nijmeijer, Saskia,Smits, Rogier A.,Jongejan, Aldo,Zuiderveld, Obbe,De Esch, Iwan J. P.,Leurs, Rob
supporting information; experimental part, p. 1693 - 1703 (2011/05/05)
The histamine H3 (H3R) and H4 (H 4R) receptors attract considerable interest from the medicinal chemistry community. Given their relatively high homology yet widely differing therapeutic promises, ligand selectivity for the two receptors is crucial. We interrogated H4R/H3R selectivities using ligands with a [1,2,3]triazole core. Cu(I)-assisted "click chemistry" was used to assemble diverse [1,2,3]triazole compounds (6a-w and 7a-f), many containing a peripheral imidazole group. The imidazole ring posed some problems in the click chemistry putatively due to Cu(II) coordination, but Boc protection of the imidazole and removal of oxygen from the reaction mixture provided effective strategies. Pharmacological studies revealed two monosubstituted imidazoles (6h,p) with 4R affinities and >10-fold H 4R/H3R selectivity. Both compounds possess a cycloalkylmethyl group and appear to target a lipophilic pocket in H 4R with high steric precision. The use of the [1,2,3]triazole scaffold is further demonstrated by the notion that simple changes in spacer length or peripheral groups can reverse the selectivity toward H3R. Computational evidence is provided to account for two key selectivity switches and to pinpoint a lipophilic pocket as an important handle for H4R over H3R selectivity.