A novel series of hybrids designed on the basis of aurantiamide acetate and isopropylated genipin were synthesized and biologicallyevaluated as anti‐inflammatoryagents. Among them, compound 7o exhibited the best inhibitory activity against TNF‐α secretion (IC50 = 16.90 μM) and was selected for further in vitro and in vivo functional study. The results demonstrated that 7o was capable of suppressing
A series of N-(4-methoxy, 4-fluoro, 4-trifluoromethyl and 4-nitrobenzoyl)-L-amino acids was synthesized and their inhibitoryactivity towards bovine lens aldosereductase (ALR2) was tested.
Enantioselective quaternization of 4-substituted oxazol-5-(4H)-ones using recoverable Cinchona-derived dimeric ammonium salts as phase-transfer organocatalysts
Dimeric anthracenyldimethyl-derived Cinchona ammoniumsalts are used as chiral organocatalysts (5 mol %) for the enantioselective 4-alkylation of 4-substituted azlactones. The corresponding adducts bearing a new quaternary center were obtained with up to 80% ee when using a dimericammonium salt derived from cinchonidine, and are precursors of α,α-disubstituted α-amino acids. The catalysts can be recovered
[EN] PROCESSES FOR THE PREPARATION OF SUBSTITUTED TETRAHYDRO BETA-CARBOLINES<br/>[FR] PROCÉDÉS DE PRÉPARATION DE TÉTRAHYDRO BÊTA-CARBOLINES SUBSTITUÉES
申请人:PTC THERAPEUTICS INC
公开号:WO2010138644A1
公开(公告)日:2010-12-02
Provided herein are improved processes for the synthesis of substituted tetrahydro beta-carboline derivatives. In particular, provided herein are improved processes useful for the preparation of (S)-4-chlorophenyl 6-chloro- 1 -(4-methoxyphenyl)-3,4-dihydro- 1 H-pyrido [3,4-b]indole-2(9H)-carboxylate. Formula (I)
Palladium-Catalyzed Aminocarbonylation in Solid-Phase Peptide Synthesis: A Method for Capping, Cyclization, and Isotope Labeling
作者:Anna Skogh、Stig D. Friis、Troels Skrydstrup、Anja Sandström
DOI:10.1021/acs.orglett.7b01068
日期:2017.6.2
A new synthetic approach for introducing N-capping groups onto peptides attached to a solidsupport, combining aminocarbonylation under mild conditions using a palladacycle precatalyst and solid-phase peptide synthesis, is reported. The use of a silacarboxylic acid as an in situ CO-releasing molecule allowed the reaction to be performed in a single vial. The method also enables versatile substitution