Synthesis and CYP24A1 inhibitory activity of N-(2-(1H-imidazol-1-yl)-2-phenylethyl)arylamides
摘要:
A series of N-(2-(1H-imidazol-1-yl)-2-phenylethyl)arylamides were prepared, using an efficient three-to five-step synthesis, and evaluated for their inhibitory activity against human cytochrome P450C24A1 (CYP24A1) hydroxylase. Inhibition ranged from IC50 0.3-72 mu M compared with the standard ketoconazole IC50 0.52 mu M, with the styryl derivative (11c) displaying enhanced activity (IC50 = 0.3 mu M) compared with the standard, providing a useful preliminary lead for drug development. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and CYP24A1 inhibitory activity of N-(2-(1H-imidazol-1-yl)-2-phenylethyl)arylamides
摘要:
A series of N-(2-(1H-imidazol-1-yl)-2-phenylethyl)arylamides were prepared, using an efficient three-to five-step synthesis, and evaluated for their inhibitory activity against human cytochrome P450C24A1 (CYP24A1) hydroxylase. Inhibition ranged from IC50 0.3-72 mu M compared with the standard ketoconazole IC50 0.52 mu M, with the styryl derivative (11c) displaying enhanced activity (IC50 = 0.3 mu M) compared with the standard, providing a useful preliminary lead for drug development. (C) 2010 Elsevier Ltd. All rights reserved.
Visible light bromide catalysis for oxazoline, pyrrolidine, and dihydrooxazine syntheses <i>via</i> C<sub>sp<sup>3</sup></sub>–H functionalizations
作者:Navdeep Kaur、Elizabeth C. Ziegelmeyer、Olutayo N. Farinde、Jonathon T. Truong、Michelle M. Huynh、Wei Li
DOI:10.1039/d1cc04588a
日期:——
(N)-centered radical for a site-selective hydrogenatomtransfer (HAT) process. This strategy enabled the unconventional syntheses of a number of N-heterocycles dependent on the amide identity. We also discovered a nucleophilicity-dependent kinetic resolution for stereochemical differentiation of Csp3–H bonds that enabled the stereoselective synthesis of cis- and trans-oxazolines.
此处描述了催化苄基 C sp 3 –H 功能化协议。这种可见光介导的过程集中在利用溴化物催化剂和氧化剂来生成以氮 (N) 为中心的自由基,用于位点选择性氢原子转移 (HAT) 过程。这种策略使依赖酰胺身份的许多 N-杂环的非常规合成成为可能。我们还发现了 C sp 3 -H 键立体化学分化的亲核依赖性动力学分辨率,这使得顺式和反式恶唑啉的立体选择性合成成为可能。
Visible-Light-Driven [3 + 2]/[4 + 2] Annulation Reactions of Alkenes with <i>N</i>-Aminopyridinium Salts
The annulation reactions of benzoamidyl radicals with alkenes were realized under visible light irradiation with fac-Ir(ppy)3 as catalyst and N-aminopyridinium salts as benzoamidyl radical precursors. The reaction can deliver two distinct types of products: in the case of vinyl arenes, [3 + 2] annulation product dihydrooxazoles were yielded exclusively; when alkyl-substituted alkenes were used, on the
strategy is described here. Amide is used as the O- and N- source to probe for regiocontrol strategies. Notably, simple additives can be selectively introduced to achieve regiodivergent oxyamination processes for electronically activated alkenes while being regio-complementary for unactivated alkenes. Our preliminary data demonstrates that this regiocontrol strategy based on nucleophile can also be applied
本文描述了一种新型碘化物催化分子间氨氧化策略。酰胺用作 O 源和 N 源来探测区域控制策略。值得注意的是,可以选择性地引入简单的添加剂,以实现电子活化烯烃的区域发散的氧胺化过程,同时对未活化的烯烃进行区域互补。我们的初步数据表明,这种基于亲核试剂的区域控制策略也可以应用于使用手性高价碘催化的不对称过程。