The present application relates to mixed Mg/Li amides of the general formula
R1R2N-MgX·zLiY (I),
wherein
R1, R2 and R3 independently are selected from substituted or unsubstituted aryl or heteroaryl containing one or more heteroatoms, linear, branched or cyclic, substituted or unsubstituted alkyl, alkenyl, alkynyl, or derivatives thereof, and, for R1 and R2 only, the silyl derivatives thereof; one of R1 and R2 may be H; or R1 and R2 together can be part of a cyclic or polymeric structure;
X and Y independently are selected amongst others from the group consisting of F; Cl; Br; I; CN; SCN; NCO; and z > 0, as well as a process for the preparation of the mixed Mg/Li amides and the use of these amides, e.g. as bases.
Tuning of the Properties of Transition-Metal Bispidine Complexes by Variation of the Basicity of the Aromatic Donor Groups
作者:Peter Comba、Michael Morgen、Hubert Wadepohl
DOI:10.1021/ic4004214
日期:2013.6.3
find broad application in the field of coordination chemistry, and the redox potentials of their transition-metal complexes are of importance in oxidation reactions by high-valent iron complexes, aziridination catalyzed by copper complexes, and imaging by 64Cu positron emission tomography tracers. Here, we show that the redox potentials and stability constants of the copper(II) complexes of 15 tetradentate
联吡啶(3,7-二氮杂双环[3.3.1]壬烷)是非常刚性和高度组织化的配体,在配位化学领域得到广泛应用,它们的过渡金属配合物的氧化还原电势在高氧氧化反应中很重要。价铁络合物,铜络合物催化的叠氮化和64 Cu铜正电子发射断层显像剂成像。在这里,我们显示了15个四齿联吡啶的铜(II)配合物的氧化还原电势和稳定性常数可以通过取代吡啶环来改变(氧化还原电势在约450 mV以上的变化和复合物稳定性在约10 mV以上的变化)日志单位)。还表明,这些变化可以通过p K a预测。吡啶基团的值以及取代基的哈米特参数,以及基于密度泛函理论的能量分解分析,还可以使人们准确地预测氧化还原电势和随之而来的配合物稳定性。结果表明,主要贡献来自于静电相互作用能,因此吡啶供体基团的部分电荷也与氧化还原电势相关。
[EN] PYRROLOTRIAZINES AS POTASSIUM ION CHANNEL INHIBITORS<br/>[FR] PYRROLOTRIAZINES SERVANT D'INHIBITEURS DES CANAUX IONIQUES POTASSIQUES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014143606A1
公开(公告)日:2014-09-18
A compound of formula (I), wherein A, R1, R3, and R24 are described herein. The compounds are useful as inhibitors of potassium channel function and in the treatment and prevention of arrhythmia, IKur-associated disorders, and other disorders mediated by ion channel function.
[EN] DEUBIQUITINASE INHIBITORS<br/>[FR] INHIBITEURS DE DÉUBIQUITINASE
申请人:PHARMAKEA INC
公开号:WO2015187427A1
公开(公告)日:2015-12-10
Described herein are compounds that are deubiquitinase inhibitors, methods of making pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds in the treatment of conditions, diseases, or disorders that would benefit from inhibition of deubiquitinase activity.
Enantioselective aldol reactionsbetween substituted pyridine carbaldehydes and α‐ketoacids were shown to provide isotetronic acids or their corresponding pyridiniumsalts, depending on the nature of the substituents on the pyridine ring. The pyridiniumsalts were generated through nucleophilic attack of the pyridine nitrogen atom onto the reactive keto functional group. Moderate‐to‐good yields of