Stereocontrolled C(sp<sup>3</sup>)–P bond formation with non-activated alkyl halides and tosylates
作者:Chu-Ting Yang、Jun Han、Jun Liu、Yi Li、Fan Zhang、Mei Gu、Sheng Hu、Xiaolin Wang
DOI:10.1039/c7ra02766d
日期:——
The C(sp3)–P bond is formed via the reaction between P–H compounds and non-activated alkyl electrophiles, especially secondary alkylhalides and tosylates. This reaction proceeds via an SN2 mechanism with inversion of configuration, so it can be used to form C–P bonds with stereocontrol from chiral secondary alcohols.
C(sp 3)-P键是通过P–H化合物与未活化的烷基亲电试剂(特别是仲烷基卤化物和甲苯磺酸酯)之间的反应形成的。该反应通过具有反转构型的S N 2机理进行,因此可以用于从手性仲醇的立体控制下形成C-P键。
[EN] PHENYL-HETEROARYL AMINE COMPOUNDS AND THEIR USES<br/>[FR] COMPOSÉS PHÉNYL-HÉTÉROARYL AMINE ET LEURS UTILISATIONS
申请人:NOVARTIS AG
公开号:WO2012066065A1
公开(公告)日:2012-05-24
The present invention provides a compound of formula (I): and pharmaceutically acceptable salts, enantiomers, stereoisomers, rotamers, tautomers, diastereomers, or racemates thereof. Also provided are methods of treating a disease or condition mediated by CDK9 using the compounds of Formula I, and pharmaceutical compositions comprising such compounds.
The present invention provides a compound of formula (I): and pharmaceutically acceptable salts, enantiomers, stereoisomers, rotamers, tautomers, diastereomers, or racemates thereof. Also provided are pharmaceutical compositions containing these compounds and methods of treating a disease or condition mediated by CDK9 using these compounds and compositions.
[EN] PYRIDINE BIARYL AMINE COMPOUNDS AND THEIR USES<br/>[FR] COMPOSÉS DE PYRIDINE BIARYLAMINE ET UTILISATION DE CEUX-CI
申请人:NOVARTIS AG
公开号:WO2012101066A1
公开(公告)日:2012-08-02
The present invention provides a compound of formula (I): and pharmaceutically acceptable salts, enantiomers, stereoisomers, rotamers, tautomers, diastereomers, or racemates thereof. These compounds inhibit the activity of CDK9 and are thus useful as pharmaceuticals. Also provided are methods of treating a disease or condition mediated by CDK9 using the compounds of Formula I and isomers thereof, and pharmaceutical compositions comprising such compounds.
Phosphane ligands with two binding sites of differing hardness for enantioselective Grignard cross coupling
作者:Andreas Terfort、Henri Brunner
DOI:10.1039/p19960001467
日期:——
A series of new, chiral phosphanes is presented, individual members of which were designed to serve as ligands in transition-metal mediated asymmetric Grignard cross coupling reactions. These ligands are characterized by a side chain containing one or two oxygen atoms with the capacity to act as binding sites for the incoming Grignard reagent. A number of structural parameters for the compounds was varied to learn about the reaction mechanism. Most of the ligands were tested in two cross coupling reactions, the formation of 3-phenylbut-1-ene and of 2,2′-dimethyl-1,1′-binaphthyl, respectively. Although both systems gave modest enantiomeric excesses it was not possible to make a comparison of their respective abilities.