Efficient Cu-Catalyzed Asymmetric Conjugate Additions of Alkylzinc Reagents to Aromatic and Aliphatic Acyclic Nitroalkenes
作者:Dawn M. Mampreian、Amir H. Hoveyda
DOI:10.1021/ol0488338
日期:2004.8.1
Cu-catalyzed method for asymmetric conjugate addition (ACA) of alkylzinc reagents to acyclic disubstituted nitroalkenes is presented. Reactions are typically effected at ambient temperature in the presence of 2 mol % chiral dipeptide phosphine and 1 mol % (CuOTf)(2).C(6)H(6). Nitroalkenes bearing aromatic as well as aliphatic substituents readily undergo asymmetricadditions. [reaction: see text]
Antitubercular Activity of Novel 2-(Quinoline-4-yloxy)acetamides with Improved Drug-Like Properties
作者:Ana Flávia Borsoi、Laura Manzoli Alice、Nathalia Sperotto、Alessandro Silva Ramos、Bruno Lopes Abbadi、Fernanda Souza Macchi Hopf、Adilio da Silva Dadda、Raoní S. Rambo、Rodrigo Braccini Madeira Silva、Josiane Delgado Paz、Kenia Pissinate、Mauro Neves Muniz、Christiano Ev Neves、Luiza Galina、Laura Calle González、Marcia Alberton Perelló、Alexia de Matos Czeczot、Mariana Leyser、Sílvia Dias de Oliveira、Graziela de Araújo Lock、Bibiana Verlindo de Araújo、Teresa Dalla Costa、Cristiano Valim Bizarro、Luiz Augusto Basso、Pablo Machado
DOI:10.1021/acsmedchemlett.2c00254
日期:2022.8.11
2-(quinoline-4-yloxy)acetamides was synthesized and evaluated as in vitro inhibitors of Mycobacterium tuberculosis (Mtb) growth. Structure–activity relationship studies led to selective and potent antitubercular agents with minimum inhibitory concentrations in the submicromolar range against drug-sensitive and drug-resistant Mtb strains. An evaluation of the activity of the lead compounds against a spontaneous
Enantioselective CuH-Catalyzed Anti-Markovnikov Hydroamination of 1,1-Disubstituted Alkenes
作者:Shaolin Zhu、Stephen L. Buchwald
DOI:10.1021/ja509786v
日期:2014.11.12
Enantioselective synthesis of β-chiral amines has been achieved viacopper-catalyzedhydroamination of 1,1-disubstituted alkenes with hydroxylamine esters in the presence of a hydrosilane. This mild process affords a range of structurally diverse β-chiral amines, including β-deuterated amines, in excellent yields with high enantioselectivities. Furthermore, catalyst loading as low as 0.4 mol% could