- Potent and Selective Agonists of Sphingosine 1-Phosphate 1 (S1P1): Discovery and SAR of a Novel Isoxazole Based Series
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Sphingosine 1-phosphate (S1P) is the endogenous ligand for the sphingosine 1-phosphate receptors (S1P1-5) and evokes a variety of cellular responses through their stimulation. The interaction of S1P with the S1P receptors plays a fundamental physiological role in a number of processes including vascular development and stabilization, lymphocyte migration, and proliferation. Agonism of S1P1, in particular, has been shown to play a significant role in lymphocyte trafficking from the thymus and secondary lymphoid organs, resulting in immunosuppression. This article will detail the discovery and SAR of a potent and selective series of isoxazole based full agonists of S1P1. Isoxazole 6d demonstrated impressive efficacy when administered orally in a rat model of arthritis and in a mouse experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis.
- Watterson, Scott H.,Guo, Junqing,Spergel, Steve H.,Langevine, Charles M.,Moquin, Robert V.,Shen, Ding Ren,Yarde, Melissa,Cvijic, Mary Ellen,Banas, Dana,Liu, Richard,Suchard, Suzanne J.,Gillooly, Kathleen,Taylor, Tracy,Rex-Rabe, Sandra,Shuster, David J.,McIntyre, Kim W.,Cornelius, Georgia,D'Arienzo, Celia,Marino, Anthony,Balimane, Praveen,Warrack, Bethanne,Salter-Cid, Luisa,McKinnon, Murray,Barrish, Joel C.,Carter, Percy H.,Pitts, William J.,Xie, Jenny,Dyckman, Alaric J.
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p. 2820 - 2840
(2016/04/10)
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- SUBSTITUTED OXADIAZOLE DERIVATIVES AS S1P AGONISTS IN THE TREATMENT OF AUTOIMMUNE AND INFLAMMATORY DISEASES
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Disclosed are compounds of Formula (I) [INSERT CHEMICAL STRUCTURE HERE] (I) or pharmaceutically acceptable salts thereof, wherein Q is [INSERT CHEMICAL STRUCTURE HERE] or [INSERT CHEMICAL STRUCTURE HERE]; R1 is alkyl or aryl, said aryl optionally substituted with one to five substituents independently selected from C1 to C6 alkyl, C1 to C4 haloalkyl, OR4, and/or halogen; and R2, R3, R4, and n are defined herein. Also disclosed are methods of using such compounds as selective agonists for G protein-coupled receptor S1P1, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of diseases or disorders in a variety of therapeutic areas, such as autoimmune diseases and vascular disease.
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Page/Page column 110-111
(2010/08/08)
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- Z/E-Isomerization of Unsaturated Carboxylic Acids during the Kolbe Electrolysis
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Z-4-Enoic acids partially isomerize to E-configurated products in the Kolbe electrolysis.The results from methyl and deuterium labelled carboxylic acids 2 and 16 support an isomerization via a reversible ring closure to cyclopropylcarbinyl radicals.The double bonds of Z-N-enoic acids with N>/= 5 fully retain their configuration in the Kolbe electrolysis; for N=6,7 cyclic products are formed to some extent, which is in accord with the reactivity of 5- and 6-alkenyl radicals.
- Huhtasaari, Matti,Schaefer, Hans J.,Luftmann, Heinrich
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p. 537 - 548
(2007/10/02)
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