Phase-Transfer-Catalyzed Asymmetric Synthesis of Axially Chiral Anilides
作者:Kun Liu、Xiangfei Wu、S. B. Jennifer Kan、Seiji Shirakawa、Keiji Maruoka
DOI:10.1002/asia.201301036
日期:2013.12
Catalytic asymmetricsynthesis of axiallychiral o‐iodoanilides and o‐tert‐butylanilides as useful chiral building blocks was achieved by means of binaphthyl‐modified chiral quaternary ammonium‐salt‐catalyzed N‐alkylations under phase‐transfer conditions. The synthetic utility of axiallychiral products was demonstrated in various transformations. For example, axiallychiral N‐allyl‐o‐iodoanilide was
Exploring Heteroaromatic Rings as a Replacement for the Labile Amide of Antiplasmodial Pantothenamides
作者:Jinming Guan、Christina Spry、Erick T. Tjhin、Penghui Yang、Tanakorn Kittikool、Vanessa M. Howieson、Harriet Ling、Lora Starrs、Dustin Duncan、Gaetan Burgio、Kevin J. Saliba、Karine Auclair
DOI:10.1021/acs.jmedchem.0c01755
日期:2021.4.22
pantothenamides show potent antiplasmodial activity, hydrolysis by pantetheinases/vanins present in blood rapidly inactivates them. We herein report the facile synthesis and biologicalactivity of a smalllibrary of pantothenamide analogues in which the labile amide group is replaced with a heteroaromatic ring. Several of these analogues display nanomolar antiplasmodial activity against Plasmodium falciparum and/or
Nitrile oxides are oxidized by tertiary amine N-oxides in different solvents at room temperature to afford in the presence of dienes nitrosocarbonyl adducts in fair yields. The mild conditions used in oxidizing a variety of nitrile oxides promise a wide application of this method in synthetic processes.
Visible-Light-Induced Dual C(sp<sup>3</sup>)–H Bond Functionalization of Tertiary Amine via Hydrogen Transfer to Carbene and Subsequent Cycloaddition
作者:Kaixiu Luo、Yongqiang Zhao、Zhiliang Tang、Weina Li、Jun Lin、Yi Jin
DOI:10.1021/acs.orglett.2c02557
日期:2022.9.2
we describe the dualC(sp3)–Hbondfunctionalization of a tertiary amine through hydride-transfer-induced dehydrogenation, followed by cycloaddition, using an easily preparable diazoester as a new type hydride-acceptor precursor under mild, redox-neutral conditions. With carbene as a hydrogen acceptor, this method was demonstrated by the preparation of a broad range of functionalized isoxazoldines in
Modification of the side chain of micromolide, an anti-tuberculosis natural product
作者:Hai Yuan、Rong He、Baojie Wan、Yuehong Wang、Guido F. Pauli、Scott G. Franzblau、Alan P. Kozikowski
DOI:10.1016/j.bmcl.2008.08.027
日期:2008.10
This paper describes a series of modi. cations of the side chain of micromolide, an anti-tuberculosis natural product. Most of the synthesized compounds showed significantly decreased activities, which suggests that the long aliphatic side chain of micromolide and its double bond are essential to its activity. (c) 2008 Elsevier Ltd. All rights reserved.