Reported herein is the first direct, metal‐catalyzed reductive functionalization of secondary amides to give functionalized amines and heterocycles. The method is shown to have exceptionally broad scope with respect to suitable nucleophiles, which cover both hard and soft C nucleophiles as well as a P nucleophile. The reaction exhibits good chemoselectivity and tolerates several sensitive functional
Electrochemical Aerobic Oxidative Cleavage of (sp<sup>3</sup>)C–C(sp<sup>3</sup>)/H Bonds in Alkylarenes
作者:Tong Shen、Shuai Liu、Jianyou Zhao、Nengyong Wang、Le Yang、Jintao Wu、Xu Shen、Zhong-Quan Liu
DOI:10.1021/acs.joc.1c02947
日期:2022.3.4
An electrochemistry-promoted oxidativecleavage of (sp3)C–C(sp3)/Hbonds in alkylarenes was developed. Various aryl alkanes can be smoothly converted into ketones/aldehydes under aerobic conditions using a user-friendly undivided cell setup. The features of air as oxidant, scalability, and mild conditions make them attractive in synthetic organic chemistry.
Dicationic Ring-Opening Reactions of <i>trans</i>-2-Phenylcyclopropylamine·HCl: Electrophilic Cleavage of the Distal (C<sub>2</sub>–C<sub>3</sub>) Bond of Cyclopropanes
作者:Sten O. Nilsson Lill、Rajasekhar Reddy Naredla、Matthew E. Zielinski、Larecia Knoecer、Douglas A. Klumpp
DOI:10.1021/jo4016198
日期:2013.9.6
Electrophilic ring opening of trans-2-phenylcyclopropylamine·HCl occurs at the distal (C2–C3) bond. This is consistent with weakening of the distal bond by the σ-withdrawing ammonium group and charge–charge repulsive effects in the transition state.
Structure-Based Optimization of Arylamides as Inhibitors of Soluble Epoxide Hydrolase
作者:Anne B. Eldrup、Fariba Soleymanzadeh、Steven J. Taylor、Ingo Muegge、Neil A. Farrow、David Joseph、Keith McKellop、Chuk C. Man、Alison Kukulka、Stéphane De Lombaert
DOI:10.1021/jm9005302
日期:2009.10.8
Inhibition of soluble epoxide hydrolase (sEH) is hypothesized to lead to an increase in circulating levels of epoxyeicosatrienoic acids, resulting in the potentiation of their in vivo pharmacological properties. As part of all effort to identify inhibitors of sEH with high and sustained plasma exposure, we recently performed a high throughput screen of our compound collection, The screen identified N-(3,3-diphenylpropyl)-nicotinamide as a potent inhibitor of sEH. Further profiling of this lead revealed short metabolic half-lives in microsomes and rapid clearance in the rat. Consistent with these observations, the determination of the in vitro metabolic profile of N-(3,3-diphenyl-propyl)-nicotinamide in rat liver microsomes revealed extensive oxidative metabolism and a propensity for metabolite switching. Lead optimization, guided by the analysis of the solid-state costructure of N-(3,3-diphenyl-propyl)-nicotinamide bound to human sEH, led to the identification of a class of potent and selective inhibitors. An inhibitor from this class displayed an attractive in vitro metabolic profile and high and sustained plasma exposure in the rat after oral administration.