Cyclotrimerization of unsymmetrically bromo-substituted diynes: toward the synthesis of potential selective inhibitors of tyrosine kinase 2
摘要:
A study on transition metal catalyzed alkyne cyclotrimerization of unsymmetrically bromo-substituted diynes with ethynyltrimethylsilane was carried out to prepare bicyclic bromobenzene key intermediates for the total synthesis of five potential tyrosine kinase 2 inhibitors. Two different pre-catalysts (Cp*RuCl(cod) and [Rh(cod)(2)]BF4/BINAP) and different reaction conditions have been examined. (C) 2012 Elsevier Ltd. All rights reserved.
Cyclotrimerization of unsymmetrically bromo-substituted diynes: toward the synthesis of potential selective inhibitors of tyrosine kinase 2
摘要:
A study on transition metal catalyzed alkyne cyclotrimerization of unsymmetrically bromo-substituted diynes with ethynyltrimethylsilane was carried out to prepare bicyclic bromobenzene key intermediates for the total synthesis of five potential tyrosine kinase 2 inhibitors. Two different pre-catalysts (Cp*RuCl(cod) and [Rh(cod)(2)]BF4/BINAP) and different reaction conditions have been examined. (C) 2012 Elsevier Ltd. All rights reserved.
The present invention relates to compounds that have the ability to modulate the activity of GPR40 and are therefore useful in the treatment of GPR40 related disorders. In addition the invention relates to the compounds, methods for their preparation, pharmaceutical compositions containing the compounds and the uses of these compounds in the treatment of certain disorders related to GPR40 activity.
Cyclotrimerization of unsymmetrically bromo-substituted diynes: toward the synthesis of potential selective inhibitors of tyrosine kinase 2
作者:Silje Melnes、Annette Bayer、Odd Reidar Gautun
DOI:10.1016/j.tet.2012.07.087
日期:2012.10
A study on transition metal catalyzed alkyne cyclotrimerization of unsymmetrically bromo-substituted diynes with ethynyltrimethylsilane was carried out to prepare bicyclic bromobenzene key intermediates for the total synthesis of five potential tyrosine kinase 2 inhibitors. Two different pre-catalysts (Cp*RuCl(cod) and [Rh(cod)(2)]BF4/BINAP) and different reaction conditions have been examined. (C) 2012 Elsevier Ltd. All rights reserved.