Study on the HPLC-based separation of some ezetimibe stereoisomers and the underlying stereorecognition process
作者:Bolin Zhu、Yaqi Yao、Yu Zhao、Tiemin Sun、Qing Li
DOI:10.1002/chir.22829
日期:2018.5
enantioseparation of ezetimibe stereoisomers by high‐performance liquid chromatography on different chiral stationary phases, ie, 3 polysaccharide‐based chiral columns, was studied. It was observed that cellulose‐based Chiralpak IC column exhibited the best resolving ability. After the optimization of mobile phase compositions in both normal and reversed phase modes, satisfactory separation could be obtained on
Last‐minute deal: A directlactonisation of ethers and alcoholsontoamides that proceeds at room temperature under mild conditions is reported (see scheme). This allows the effective saving of up to two unproductive, sequential deprotection operations in synthetic sequences. Mechanistic studies are described, and a new “amidestrategy” that exploits the dual robustness/late‐stage selective activation
Cooperative iodine and photoredox catalysis for direct oxidative lactonization of carboxylic acids
作者:Thomas Duhamel、Kilian Muñiz
DOI:10.1039/c8cc08594c
日期:——
A new method for the formation of γ- and δ-lactones from carboxylic acids through direct conversion of benzylic C–H to C–O bonds is described. The reaction is conveniently induced by visible light and relies on a mild cooperative catalysis by the combination of molecular iodine and an organic dye.
[EN] NEW CCR2 RECEPTOR ANTAGONISTS AND USES THEREOF<br/>[FR] NOUVEAUX ANTAGONISTES DU RÉCEPTEUR CCR2 ET LEURS UTILISATIONS
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2011073154A1
公开(公告)日:2011-06-23
The present invention relates to novel antagonists for CCR2 (CC chemokine receptor 2) of Formula (I) and their use for providing medicaments for treating conditions and diseases, especially pulmonary diseases like asthma and COPD.
The present invention relates to novel antagonists for CCR2 (CC chemokine receptor 2) and their use for providing medicaments for treating conditions and diseases, especially pulmonary diseases like asthma and COPD.