Synthesis of pyrrolidine-3-carboxylic acid derivatives <i>via</i> asymmetric Michael addition reactions of carboxylate-substituted enones
作者:Feng Yin、Ainash Garifullina、Fujie Tanaka
DOI:10.1039/c7ob01484h
日期:——
concisely synthesize highly enantiomerically enriched 5-alkylsubstituted pyrrolidine-3-carboxylic acids, organocatalytic enantioselective Michael addition reactions of 4-alkyl-substituted 4-oxo-2-enoates with nitroalkanes have been developed. Using the developed reaction method, 5-methylpyrrolidine-3-carboxylic acid with 97% ee was obtained in two steps.
Synthesis of α-amino γ-lactone via a novel tandem three-component reaction of alkenes, glyoxylates and amines
作者:Taisheng Huang、Chao-Jun Li
DOI:10.1016/s0040-4039(00)01769-x
日期:2000.12
α-Amino γ-lactones were generated by an InCl3-mediated or Sc(OTf)3-catalyzed three-component reaction of alkenes, glyoxylates and amines.
α-氨基γ-内酯是由InCl 3介导或Sc(OTf)3催化的烯烃,乙醛酸酯和胺的三组分反应生成的。
[EN] SELECTIVE INHIBITORS OF NLRP3 INFLAMMASOME<br/>[FR] INHIBITEURS SÉLECTIFS DE L'INFLAMMASOME NLRP3
申请人:NODTHERA LTD
公开号:WO2019025467A1
公开(公告)日:2019-02-07
The present disclosure relates to compounds of Formula (I): (I); and to their pharmaceutically acceptable salts, pharmaceutical compositions, methods of use, and methods for their preparation. The compounds disclosed herein are useful for inhibiting the maturation of cytokines of the IL-1 family by inhibiting inflammasomes and may be used in the treatment of disorders in which inflammasome activity is implicated, such as autoinflammatory and autoimmune diseases and cancers.
The Pd-catalyzed cross-coupling ethoxycarbonylation of aryl boronic acids with N-aryl-α-iminoesters affords aryl carboxylic esters via carbonyl-imino Ï bond cleavage. This unprecedented mode of reaction allows regioselective installation of the ethoxycarbonyl group into target molecules. Mechanism studies have revealed that an unusual 1,2-aryl shift process is involved in the transformation.
bis‐cyclometalated chiral‐at‐metal rhodiumcomplex catalyzes the Diels–Alderreaction between N‐Boc‐protected 3‐vinylindoles (Boc=tert‐butyloxycarbonyl) and β‐carboxylic ester‐substituted α,β‐unsaturated 2‐acyl imidazoles with good‐to‐excellent regioselectivity (up to 99:1) and excellent diastereoselectivity (>50:1 d.r.) as well as enantioselectivity (92–99 % ee) under optimized conditions. The rhodium catalyst