Dichloroacetophenones targeting at pyruvate dehydrogenase kinase 1 with improved selectivity and antiproliferative activity: Synthesis and structure-activity relationships
作者:Shao-Lin Zhang、Zheng Yang、Xiaohui Hu、Kin Yip Tam
DOI:10.1016/j.bmcl.2018.09.026
日期:2018.11
Dichloroacetophenone is a pyruvate dehydrogenase kinase 1 (PDK1) inhibitor with suboptimal kinase selectivity. Herein, we report the synthesis and biological evaluation of a series of novel dichloroacetophenones. Structure-activity relationship analyses (SARs) enabled us to identify three potent compounds, namely 54, 55, and 64, which inhibited PDK1 function, activated pyruvate dehydrogenase complex
Halogenation Using Quaternary Ammonium Polyhalides. XXXII. Dichlorination of Aromatic Acetyl Derivatives with Benzyltrimethylammonium Tetrachloroiodate
The reaction of aromatic acetyl derivatives with 2 molar amounts of benzyltrimethylammonium tetrachloroiodate in acetic acid at 70 °C for several hours gave dichloroacetyl derivatives in good yields.
芳族乙酰衍生物与 2 摩尔量的四氯碘酸苄基三甲基铵在 70 °C 的乙酸中反应几个小时,以良好的收率得到二氯乙酰衍生物。
derivatives is consistent with the existence of trans-gauche conformational equilibria in the dissolved state. The relative amounts of each conformer have been determined and agree well with previous determinations. A theoretical study of the rotational isomerism has been carried out by the PCILO method for 1-phenyl-2-chloroethane and 1-phenyl-1-fluoro-2chloroethane. The relative stability and polarity of
Precise control of the chemoselectivity of the halogenation of a substrate equipped with multiple nucleophilic sites is highly demanding and challenging. Most reported chlorinations of methyl ketones show poor compatibility or even exclusive selectivity toward electron-rich arene, olefin, and alkyne residues. This is attributed to the direct or in situ employment of electrophilic Cl2/Cl+ species. Here
Expanding the Scope of Alcohol Dehydrogenases towards Bulkier Substrates: Stereo- and Enantiopreference for α,α-Dihalogenated Ketones
作者:Kinga Kędziora、Fabricio R. Bisogno、Iván Lavandera、Vicente Gotor-Fernández、Jose Montejo-Bernardo、Santiago García-Granda、Wolfgang Kroutil、Vicente Gotor
DOI:10.1002/cctc.201300834
日期:2014.4
two racemic α‐substituted ketones, namely α‐bromo‐ α‐chloro‐ and α‐chloro‐α‐fluoroacetophenone were investigated to obtain one of the four possible diastereoisomers through a dynamic kinetic process. In the case of the brominated derivative, only the (1R)‐enantiomer was obtained by using ADH‐A, although with moderate diastereomeric excess (>99 % ee, 63 % de), whereas the fluorinated ketone exhibited