Compounds of formula
are HDAC inhibitors. These compounds are useful for the treatment of diseases such as cancer in humans or animals.
这些化合物的化学式是HDAC抑制剂。这些化合物对于治疗人类或动物的癌症等疾病是有用的。
Scope and Mechanism of Enantioselective Michael Additions of 1,3-Dicarbonyl Compounds to Nitroalkenes Catalyzed by Nickel(II)−Diamine Complexes
作者:David A. Evans、Shizue Mito、Daniel Seidel
DOI:10.1021/ja0735913
日期:2007.9.1
Readily prepared Ni(II)-bis[(R,R)-N,N'-dibenzylcyclohexane-1,2-diamine]Br(2) was shown to catalyze the Michaeladdition of 1,3-dicarbonyl compounds to nitroalkenes at room temperature in good yields with high enantioselectivities. The two diamineligands in this system each play a distinct role: one serves as a chiralligand to provide stereoinduction in the addition step while the other functions
容易制备的 Ni(II)-双[(R,R)-N,N'-二苄基环己烷-1,2-二胺]Br(2) 在室温下可催化 1,3-二羰基化合物与硝基烯烃的迈克尔加成反应温度高,产率高,对映选择性高。该系统中的两个二胺配体各自发挥不同的作用:一个作为手性配体在加成步骤中提供立体诱导,而另一个作为底物烯醇化的基础。还研究了催化剂内的配体改性,以促进脂肪族硝基烯烃、1,3-二酮和 β-酮酸的反应。Ni(II)-双[(R,R)-N,N'-di-p-bromo-benzylcyclohex-1,2-diamine]Br(2) 在这些情况下被发现是一种有效的催化剂。此外,单二胺络合物,Ni(II)-[(R,R)-N,N'-二苄基环己烷-1,2-二胺]Br(2),在水存在下催化加成反应。所提出的立体化学诱导模型显示与 X 射线结构分析一致。
Redox-configurable ambidextrous catalysis: structural and mechanistic insight
作者:Shahab Mortezaei、Noelle R. Catarineu、Xueyou Duan、Chunhua Hu、James W. Canary
DOI:10.1039/c5sc02144h
日期:——
A helically chiral copper complex is used as a switchable asymmetric catalyst capable of delivering either enantiomer of a Michael addition reaction.
一个螺旋手性铜配合物被用作可切换的不对称催化剂,能够提供Michael加成反应的任一对映体。
Novel bifunctional sulfonamides catalyze an enantioselective conjugate addition
作者:Patrick G. McGarraugh、Stacey E. Brenner
DOI:10.1016/j.tet.2008.11.027
日期:2009.1
A new bifunctional organocatalyst with a novel structural and functional motif has been developed. This bifunctionalsulfonamide organocatalyst was used in the conjugateaddition of 1,3-dicarbonyl compounds (13) to β-nitrostyrenes (12). Yields up to 91% and enantiomeric excesses up to 79% were obtained in this reaction. This catalyst activates both 13 via its basic moiety and 12 through hydrogen bonding