Synthesis and preliminary pharmacological evaluation of the four stereoisomers of (2S)-2-(2′-phosphono-3′-phenylcyclopropyl)glycine, the first class of 3′-substituted transC1′−2′-2-(2′-phosphonocyclopropyl)glycines
摘要:
Four stereoisomers of (2,S)-2-(2'-phosphono-3-phenylcyclopropyl)glycine were synthesized by a stereocontrolled synthetic procedure and evaluated as mGluRs ligands. The (2S, 1'R,2'S,3'R)-isomer (PPCG-2) showed to be a group III mGluRs selective ligand endowed with a moderate potency as mGluR4/mGluR6 agonist. (c) 2007 Elsevier Ltd. All rights reserved.
[EN] RAS BINDING PEPTIDES AND METHODS OF USE<br/>[FR] PEPTIDES DE LIAISON À RAS ET MÉTHODES D'UTILISATION
申请人:RA PHARMACEUTICALS INC
公开号:WO2017181061A1
公开(公告)日:2017-10-19
The present invention provides Ras modulators including inhibitors and/or antagonists of Ras, Ras binding, and Ras-dependent cell signaling activity. Also provided are methods of utilizing the Ras modulators as therapeutics.
Copper-catalyzed asymmetric allylic substitution with aryl and ethyl Grignard reagents
作者:Khalid B. Selim、Ken-ichi Yamada、Kiyoshi Tomioka
DOI:10.1039/b809140d
日期:——
Phenyl- and ethyl-magnesium bromides undergo regioselective asymmetricallylicsubstitution with high enantioselectivity under the catalysis of chiral amidophosphane-copper(I) complexes.
High Diversity on Simple Substrates: 1,4-Dihalo-2-butenes and Other Difunctionalized Allylic Halides for Copper-Catalyzed SN2′ Reactions
作者:Caroline A. Falciola、Alexandre Alexakis
DOI:10.1002/chem.200801309
日期:——
Enantioselective allylic alkylation with an organomagnesium reagent catalyzed by copper thiophene carboxylate (CuTC) was carried out on difunctionalized substrates, such as commercially available 1,4-dichloro-2-butene and 1,4-dibromo-2-butene, and on similar compounds of higher substitution pattern of the olefin for the formation of all-carbon chiral quaternary centers. The high regioselectivity obtained
作者:Damien Polet、Xavier Rathgeb、Caroline A. Falciola、Jean-Baptiste Langlois、Samir El Hajjaji、Alexandre Alexakis
DOI:10.1002/chem.200801879
日期:2009.1.19
We describe herein the development of the first iridium‐catalyzed allylic substitution using arylzinc nucleophiles. High enantioselectivities were obtained from the reactions, which used commercially available Grignardreagents as the starting materials. This methodology was also shown to be compatible with halogen/metal exchange reactions. Its synthetic potential is demonstrated by its application
The present invention provides inhibitors and/or antagonists of plasma kallikrein. Also provided are methods of utilizing the inhibitors as therapeutics.