Controlling factors determining the regiochemistry of intramolecular alkoxymercuration
作者:Yasuhisa Senda、Hiroko Kanto、Hiroki Itoh
DOI:10.1039/a608003k
日期:——
The intramolecular alkoxymercuration of
(E)-5-arylpent-4-en-1-ols indicated that the
regioselectivity is closely related to the Hammett constants of the
para-substituents on the benzene ring. Large solvent effects on
the regioselectivity were also observed. These results were compared
with those of the methoxymercuration of β-methylstyrene analogues.
The regioselectivity is discussed in terms of steric effects as well as
the electronic effects which are suggested by the MO calculation for the
mercurinium ion intermediates.
[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.
High turnover: An highlyefficientcatalyticasymmetrichydrogenation of δ‐aryl‐δ‐ketoesters has been realized by using the chiral spiroiridium catalyst (R)‐1. Chiral 1,5‐diol products are obtained with excellent enantioselectivity and turnover numbers (TONs) as high as 100 000. TOF=turnover frequency.
[EN] CCR2 RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DU RÉCEPTEUR CCR2
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2011147772A1
公开(公告)日:2011-12-01
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.