title: Synthesis of para-alkyl aryl amide analogues of sphingosine-1-phosphate: discovery of potent S1P receptor agonists.
abstract: Sphingosine-1-phosphate (S1P) is a biologically active lysophospholipid with the capacity to induce a broad range of cellular responses via its interaction with the S1P family of G-protein coupled receptors. This report describes the synthesis of several potent S1P receptor agonists. For instance, compound 9c displayed an EC(50)=8.6 nM at the S1P(1) receptor using a [gamma-35S]GTP binding assay as compared to an EC(50)=4.5 nM for the endogenous ligand. We also report the effects associated with introduction of a phenyl ring between the 'linker' and 'lipophilic tail' regions of the analogues, for example total loss of activity at S1P(2) and increased agonism at S1P(5).
mesh_terms: D000577:Amides / Q000737:chemistry*; D002460:Cell Line; D006801:Humans; D008246:Lysophospholipids; D043562:Receptors, G-Protein-Coupled / Q000819:agonists*; D049312:Receptors, Lysophospholipid; D013110:Sphingosine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000577:Amides; D008246:Lysophospholipids; D043562:Receptors, G-Protein-Coupled; D049312:Receptors, Lysophospholipid; C060506:sphingosine 1-phosphate; D013110:Sphingosine