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
Solvent-free preparation of α,α-dichloroketones with sulfuryl chloride
作者:Dewei Tu、Juan Luo、Wengao Jiang、Qiang Tang
DOI:10.1016/j.tetlet.2021.153335
日期:2021.9
An efficient and facile method is reported for the synthesis of a series of α,α-dichloroketones. The direct dichlorination of methyl ketones and 1,3-dicarbonyls using an excess amount of sulfuryl chloride affords the corresponding -dichloro compounds in moderate to excellent yields. Moreover, the protocol features high yields, broad substrate scope, and simple reaction conditions without using any
α-Halogenation of carbonyl compounds: halotrimethylsilane–nitrate salt couple as an efficient halogenating reagent system
作者:G.K. Sxurya Prakash、Rehana Ismail、Jessica Garcia、Chiradeep Panja、Golam Rasul、Thomas Mathew、George A. Olah
DOI:10.1016/j.tetlet.2011.01.039
日期:2011.3
A mixture of chloro/bromotrimethylsilane and nitrate salt is found to be an effective reagent system for the α-chlorination/bromination of carbonyl compounds. The reaction occurs under mild conditions yielding the products in moderate to good yields.
Ultrasound-assisted tandem reaction of alkynes and trihaloisocyanuric acids by thiourea as catalyst in water
作者:Xingyu Zhang、Yundong Wu、Ya Zhang、Huilan Liu、Ziyu Xie、Shengmin Fu、Fang Liu
DOI:10.1016/j.tet.2017.05.075
日期:2017.8
With water as the sole solvent, a green and efficient method has been developed for the synthesis of various α,α-dihaloketones via ultrasound assisted p-tolylthiourea catalyzed tandemreaction of alkynes with trihaloisocyanuric acids. This synthetic route could effectively avoid the use of toxic organic solvents and transition metal catalysts, and the products could be obtained in a very short time