161313-45-7Relevant academic research and scientific papers
GLYCOMIMETIC ANTAGONISTS FOR BOTH E- AND P-SELECTINGS
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Figure 7A, (2010/02/12)
Compounds and methods are provided for modulating in vivo and in vivo processes mediated by selectin biniding. More specifically, selectin modulators and their use are described, wherein the selectin modulators that modulate (e.g. inhibit or enhance) a selectin-mediated function comprise particular glycomimetics linked to a member of a class of compounds termed BASAs (Benzyl Amino Sulfonic Acids).
Process research of (R)-cyclohexyl lactic acid and related building blocks: A comparative study
Storz, Thomas,Dittmar, Peter,Fauquex, Pierre Francois,Marschal, Philippe,Lottenbach, Willy Urs,Steiner, Heinz
, p. 559 - 570 (2013/09/05)
(S)-Cyclohexyl lactic acid is a component of the selective E-selectin inhibitor 2 ((S)-cHexLact-2-0-(3-Galβ(1→3)ddGlc-(4→1)αFuc). We describe the evaluation of various synthetic routes to this building block: (A) diazotation of phenylalanine followed by phenyl ring hydrogenation; (B) phenyl ring hydrogenation of phenyl alanine followed by diazotation; (C) acidic hydrolysis of the cyanohydrin derived from phenylacetaldehyde, enantiomeric resolution of the resulting, racemic phenyl lactic acid via diasteromeric salt formation and phenyl ring hydrogenation; (D) enantioselective dihydroxylation of a cinnamate ester, followed by hydrogenation of the benzylic hydroxy group and the aromatic nucleus; (E) enantioselective biocatalytic reduction of phenylpyruvic acid, followed by phenyl ring hydrogenation. The development of (2R)-2-0-(4-nitrophenyl)sulfonyl-cyclohexyl lactic acid p-bromobenzylester 21 as a buidling block with improved crystallinity and stability is also described.
Synthesis and Biological Evaluation of a Potent E-Selectin Antagonist
Thonia, Gebhard,Kinzy, Willy,Bruns, Christian,Patton, John T.,Magnani, John L.,Baenteli, Rolf
, p. 4909 - 4913 (2007/10/03)
An early step of the inflammatory response - the rolling of leukocytes on activated endothelial cells - is mediated by selectin/carbohydrate interactions. The tetrasaccharide sialyl Lewisx (sLex) 1 is a ligand for E-, P-, and L-selectin and, therefore, serves as a lead structure to develop analogues which allow the control of acute and chronic inflammation. Here we describe the efficient synthesis (10 linear steps) of the potent sLex mimetic 2. Compared to sLex, compound 2 showed a 30-fold improved affinity in a static, cell-free E-selectin-ligand binding assay (IC50 = 36 μM). These data were confirmed by a marked inhibition in an in vitro cell-cell rolling assay which simulates in vivo conditions (IC50 ca. 40 μM). The assays are predictive for the in vivo efficacy of test compounds as indicated by a marked inhibitory effect of 2 in a thioglycollate induced peritonitis model of acute inflammation in mice (ED50 ca. 15 mg/kg).
