The importance of 1:1 and 1:2 metal–ligand species in chiral copper(II)–bis(oxazoline) complexes for catalytic activity
摘要:
The rate ratio of different copper(II)-bis(oxazoline) complexes for catalytic activity was assessed in a simple competitive experiment. The cumulated product enantioselectivity derived from a mixture of catalysts with antipodal chiral induction provided sufficient information to determine the relative rates in the asymmetric Friedel-Crafts alkylations of indoles with benzylidene malonates. The discovery of non-linear effects in the reaction system investigated gave insights into the active and resting states of the catalysts. This approach can serve as a tool to screen the activities of different catalysts when detailed kinetic measurements are not suggestive. (C) 2010 Elsevier Ltd. All rights reserved.
[EN] OXAZOLINE PSEUDODIMERS, PHARMACEUTICAL COMPOSITIONS AND THE USE THEREOF<br/>[FR] PSEUDODIMÈRES D'OXAZOLINE, COMPOSITIONS PHARMACEUTIQUES ET UTILISATION CORRESPONDANTES
申请人:PURDUE PHARMA LP
公开号:WO2017192858A1
公开(公告)日:2017-11-09
The present disclosure is directed to oxazoline mono- and hetero-pseudodimer compounds, such as compounds of Formula (I) or pharmaceutically acceptable salts or solvates thereof: These compounds are useful for treating pain. The present disclosure also relates to pharmaceutical compositions comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of a compound of Formula (I) or (II) or a pharmaceutically acceptable salt or solvate thereof
A straightforward synthesis of chiral aza-bis(oxazoline) (Azabox) ligands from commercially available amino alcohols is described. The new protocol allows access to previously reported Azabox ligands in considerably improved yields but also to new derivatives, including non-C2-symmetrical ones.
Energy-Resolved Collision-Induced Dissociation Cross Sections of 2:1 Bis-oxazoline Copper Complexes. Nonbonded Interactions and Nonlinear Effects
作者:Eva Zocher、Rolf Dietiker、Peter Chen
DOI:10.1021/ja065390p
日期:2007.3.1
Absolute ligand binding energies are determined for the 2:1 complexes of bis-oxazoline ligands and Cu(I) in the gas phase by the fitting of energy-resolved collision-induced dissociation cross sections. The complexes were chosen for their occurrence in asymmetriccatalysis for which the phenomenon of nonlineareffects is explained by differences in stability for homochiral and heterochiral complexes
Oxazoline pseudodimers, pharmaceutical compositions and the use thereof
申请人:PURDUE PHARMA L.P.
公开号:US10858326B2
公开(公告)日:2020-12-08
The present disclosure is directed to oxazoline mono- and hetero-pseudodimer compounds, such as compounds of Formula (I) or pharmaceutically acceptable salts or solvates thereof:
These compounds are useful for treating pain. The present disclosure also relates to pharmaceutical compositions comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of a compound of Formula (I) or (II) or a pharmaceutically acceptable salt or solvate thereof.