Enantiomerically Pure Highly Functionalized α-Amino Ketones from the Reaction of Chiral Cyclic N-(9-Phenylfluoren-9-yl) α-Amido Esters with Organolithium Reagents
摘要:
The reaction of methyl N-(9-phenylfluoren-9-yl)pyroglutamate with several organolithium reagents afforded the corresponding ketones in excellent yields and with complete retention of enantiomeric purity. The success of this transformation is due to the unusual stability of the tetrahedral intermediates 5, which stems from two factors: the electron-withdrawing effect of the amide nitrogen and the Lithium complexing ability of the fluorenyl ring of the 9-phenylfluoren-9-yl group, This ester-to-ketone transformation was also successfully applied to oxazolidinone 9 and imidazolidinone 20 and provided a ketone (21b) that was ultimately transformed inter the urea-lactam 26 which incorporates the bicyclic core of streptolidine lactam, a component of the streptrothricin antibiotics.
[EN] BICYCLIC-FUSED HETEROARYL OR ARYL COMPOUNDS AND THEIR USE AS IRAK4 INHIBITORS<br/>[FR] COMPOSÉS À BASE D'HÉTÉROARYLE OU D'ARYLE FUSIONNÉ-BICYCLIQUE ET LEUR UTILISATION COMME COMPOSÉS INHIBITEURS DE L'IRAK 4
申请人:PFIZER
公开号:WO2015150995A1
公开(公告)日:2015-10-08
Compounds, tautomers and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula Ia, as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
Compounds, tautomers and pharmaceutically acceptable salts of the compounds are disclosed, wherein the compounds have the structure of Formula Ia,
as defined in the specification. Corresponding pharmaceutical compositions, methods of treatment, methods of synthesis, and intermediates are also disclosed.
本发明公开了化合物、化合物的同系物和药学上可接受的盐,其中化合物具有说明书中定义的式 Ia 结构。 还公开了相应的药物组合物、治疗方法、合成方法和中间体。
BICYCLIC-FUSED HETEROARYL OR ARYL COMPOUNDS AND THEIR USE AS IRAK4 INHIBITORS