A Convenient Samarium-Promoted Synthesis of Aliphatic (E)-Nitroalkenes under Mild Conditions
摘要:
A samarium-promoted synthesis of (E)-nitroalkenes from 1-bromo-1-nitroalkan-2-ols in high yields and with total selectivity is reported. This reaction together with the easy and efficient preparation of the 1-bromo-1-nitroalkan-2-ols constitutes a simple and advantageous alternative toward nitroalkenes with total E-stereoselectivity. A mechanism is proposed to explain the E-stereoselectivity of the beta-elimination reaction.
[EN] INHIBITORS OF ERK AND METHODS OF USE<br/>[FR] INHIBITEURS D'ERK ET MÉTHODES D'UTILISATION
申请人:ARAXES PHARMA LLC
公开号:WO2015051341A1
公开(公告)日:2015-04-09
The present invention provides chemical entities or compounds and pharmaceutical compositions thereof that are capable of modulating certain protein kinases such as ERK (MAPK). Also provided are methods of using such compounds or compositions, and methods of using these compositions to modulate the activities of one or more of these kinases, especially for therapeutic applications such as the treatment disorders such as cancer.
The invention discloses compounds of Formula (I)
wherein R
1
, R
2
, R
2A
, R
3
, R
3A
, R
4
, R
4A
, and R
5
are as defined herein. The present invention relates to compounds and their use in the treatment of cystic fibrosis, methods for their production, pharmaceutical compositions comprising the same, and methods of treating cystic fibrosis by administering a compound of the invention.
A straightforwardsynthesis of 1,2‐dicyanoalkanes by reacting nitroalkenes with trimethylsilyl cyanide in the presence of tetrabutylammoniumfluoride is described. The reaction proceeds through a tandem double Michael addition under mild conditions. Employing the hypervalent silicate generated from trimethylsilyl cyanide and tetrabutylammoniumfluoride is essential for achieving this transformation
New phosphino‐oxazoline ligands have been developed, and the ligands have been used for Cu‐catalysed enantioselective conjugate additions to (E)‐nitroalkenes.