This paper describes the palladium-catalyzed arylation of 1-substituted 3-aminopyrrolidines or piperidines. Palladium(0) (1−2 mol %) in conjunction with “Buchwald's ligand” [2-(dimethylamino)-2‘-(dicyclohexylphosphine)biphenyl] was shown to be the catalyst of choice for the coupling with aryl bromides or chlorides. When bromobenzene was used, a strong temperature effect was noticed. Whereas no reaction
palladium-mediated reaction of bromobenzene with various heterocyclic diamines was studied. Whatever the ligand used, 3-aminopyrrolidine underwent arylation of the secondaryamine function (>82%), whereas the more flexible 3-aminoazepinine was arylated on its primary function (>70%). The ratio “arylation of primaryamine versus arylation of secondaryamine” of 3-aminopiperidine with bromobenzene varied from
研究了钯介导的溴苯与各种杂环二胺的化学选择性。无论使用哪种配体,3-氨基吡咯烷均会发生仲胺功能的芳基化(> 82%),而更灵活的3-氨基氮杂ze啶会在其主要功能上发生芳基化(> 70%)。3-氨基哌啶与溴苯的“伯胺芳基化与仲胺芳基化”比在90:10(BINAP,富电子和受阻联苯L2或L3)与Josiphos型配体L10之间为32:68 。当使用4-氨基哌啶时,观察到相同的趋势(L2为82:18,L10为17:83)。该选择性可以通过选择具有不同空间和电子性质的芳基卤化物伴侣来调节。从竞争性实验中推导出反应期间二胺的两个氮的协同作用。最后,在室温下用3-氨基吡咯烷进行的13 C和31 P NMR实验支持伯胺与金属的快速配位。实际上,已表征了钯配合物,该配合物是由中间体ArPdX(BINAP)的一个膦基基团被伯氨基不同寻常地取代而形成的。
Aminopyrrolidines as chemokine receptor antagonists
申请人:George Dawn M.
公开号:US20080176883A1
公开(公告)日:2008-07-24
The present invention is directed to novel aminopyrrolidines of formula I
pharmaceutically acceptable salts thereof, metabolites thereof, isomers thereof, stereoisomers thereof or pro-drugs thereof, wherein the variables are as defined herein. The compounds of formula (I) are useful as chemokine receptor antagonists and as such would be useful in treating certain conditions and diseases, especially inflammatory conditions and diseases and proliferative disorders and conditions, for example, cancers.
Azaquinazoline Inhibitors of Atypical Protein Kinase C
申请人:Cancer Research Technology Limited
公开号:US20140113882A1
公开(公告)日:2014-04-24
The present application provides a compound of formula (I)
or a salt thereof, wherein R
7
, R
8
, R
9
, G, and X are as defined herein. This application further describes compositions comprising the same. Compounds of formula (I) and their salts have aPKC inhibitory activity, and may be used to treat proliferative disorders.