[EN] SUBSTITUTED OXADIAZOLE DERIVATIVES AS S1P AGONISTS IN THE TREATMENT OF AUTOIMMUNE AND INFLAMMATORY DISEASES<br/>[FR] DÉRIVÉS D'OXADIAZOLE SUBSTITUÉS COMME AGONISTES DE S1P DANS LE TRAITEMENT DE MALADIES AUTO-IMMUNES ET INFLAMMATOIRES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2010085582A1
公开(公告)日:2010-07-29
[00180] Disclosed are compounds of Formula (I) or pharmaceutically acceptable salts thereof, wherein Q is or R1 is cycloalkyl, heteroaryl, or heterocyclyl, each 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 vascular disease and autoimmune diseases.
Stereo- and Regioselective Gold-Catalyzed Hydroamination of Internal Alkynes with Dialkylamines
作者:Kevin D. Hesp、Mark Stradiotto
DOI:10.1021/ja109192w
日期:2010.12.29
a state-of-the-art precatalyst for the stereoselective hydroamination of internal aryl alkynes with dialkylamines to afford E-enamine products. Substrates featuring a diverse range of functional groups on both the amine (ether, sulfide, N-Boc amine, fluoro, nitrile, nitro, alcohol, N-heterocycles, amide, ester, and carboxylic acid) and alkyne (ether, N-heterocycles, N-phthalimide amines, and silyl
A rhodium catalyst induced ring opening of benzocyclobutenols with selective cleavage of the C(sp(2))-C(sp(3)) bond adjacent to the hydroxyl group. The site-selectivity markedly contrasted with that of their thermal ring-opening reaction. The rhodium-catalyzed ring opening led to the development of a new alkyne insertion reaction constructing a dihydronaphthalene framework.
to access the isoquinolone motif via cross-coupling/cyclization of benzhydroxamic acid with alkynes is described. The reaction features a regioselective cleavage of a C-H bond on the benzhydroxamic acid coupling partner as well as a regioselective alkyne insertion. Mechanistic studies point out the important involvement of a N-Obond as a tool for C-Nbondformation and catalystturnover.
描述了通过苯异羟肟酸与炔烃的交叉偶联/环化获得异喹诺酮基序的无外部氧化剂过程。该反应的特点是区域选择性裂解苯异羟肟酸偶联物上的 CH 键以及区域选择性炔烃插入。机理研究指出 NO 键作为 CN 键形成和催化剂周转的工具的重要参与。
Nickel-Catalyzed Reductive [2+2] Cycloaddition of Alkynes
The nickel-catalyzed synthesis of tetrasubstituted cyclobutenes from alkynes is reported. This transformation is uniquely promoted by the use of a primary aminophosphine, an unusual ligand in nickel catalysis. Mechanistic insights for this new transformation are provided, and postreaction modifications of the cyclobutene products to stereodefined cyclic and acyclic compounds are reported, including