Addressing hERG activity while maintaining favorable potency, selectivity and pharmacokinetic properties of PPARδ modulators
摘要:
One of the most commonly used strategies to reduce hERG (human ether-a-go-go) activity in the drug candidates is introduction of a carboxylic acid group. During the optimization of PPAR delta modulators, some of the compounds containing a carboxylic acid were found to inhibit the hERG channel in a patch clamp assay. By modifying the basicity of the imidazole core, potent and selective PPAR delta modulators that do not inhibit hERG channel were identified. Some of the modulators have excellent pharmacokinetic profiles in mice.
Copper-Catalyzed Oxidative Amidation of Aldehydes with Amine Salts: Synthesis of Primary, Secondary, and Tertiary Amides
作者:Subhash Chandra Ghosh、Joyce S. Y. Ngiam、Abdul M. Seayad、Dang Thanh Tuan、Christina L. L. Chai、Anqi Chen
DOI:10.1021/jo301252c
日期:2012.9.21
aldehydes with economic ammonium chloride or amine hydrochloride salts has been developed for the synthesis of a wide variety of amides by using inexpensive copper sulfate or copper(I) oxide as a catalyst and aqueous tert-butyl hydroperoxide as an oxidant. This amidation reaction is operationally straightforward and provides primary, secondary, and tertiary amides in good to excellent yields for most
Magnetic CuFe2O4 nanoparticles: a retrievable catalyst for oxidative amidation of aldehydes with amine hydrochloride salts
作者:A. Suresh Kumar、B. Thulasiram、S. Bala Laxmi、Vikas S. Rawat、B. Sreedhar
DOI:10.1016/j.tet.2014.01.051
日期:2014.9
for the oxidative amidation of aldehydes with aminehydrochloridesalts is described. A wide range of amides have been synthesized in good to excellent yields under mild conditions. Chiral amide also synthesized from its corresponding chiral amine salt with retention of the stereochemistry. In particular, the performance of the magnetic separation of the catalyst was very efficient and an alternative
描述了磁性CuFe 2 O 4纳米颗粒在醛与胺盐酸盐的氧化酰胺化中的应用。在温和的条件下,已经以良好的收率合成了各种酰胺。还从其相应的手性胺盐合成了手性酰胺,并且保留了立体化学。特别地,催化剂的磁分离性能非常有效,并且可以替代时间,溶剂和耗能的分离程序。连续五个周期后,催化剂的催化活性保持不变,由于其效率,易处理性和成本效益,使其在环境方面无害且可广泛应用。