Copper-Catalyzed Amino Lactonization and Amino Oxygenation of Alkenes Using <i>O</i>-Benzoylhydroxylamines
作者:Brett N. Hemric、Kun Shen、Qiu Wang
DOI:10.1021/jacs.6b02840
日期:2016.5.11
A copper-catalyzed amino lactonization of unsaturated carboxylic acids has been achieved as well as the analogous intermolecular three-component amino oxygenation of olefins. The transformation features mild conditions and a remarkably broad substrate scope, offering a novel and efficient approach to construct a wide range of amino lactones as well as 1,2-amino alcohol derivatives. Mechanistic studies
Regio‐ and Stereoselective Chan‐Lam‐Evans Enol Esterification of Carboxylic Acids with Alkenylboroxines
作者:Luuk Steemers、Linda Wijsman、Jan H. van Maarseveen
DOI:10.1002/adsc.201800914
日期:2018.11.5
Efficient and scalable Cu(II)‐mediated enol esterification methodology of carboxylicacids from alkenyl boroxines and boronic acids is presented. The reaction shows a wide scope in aliphatic and aromatic carboxylicacids in combination with several alkenyl boroxines. In the case of 2‐substituted alkenyl boroxines the double bond configuration was fully retained in the enol ester product. Also N‐hydroxyimides
[EN] 2 -AMINO- 1, 8 -NAPHTHYRIDINE-3 -CARBOXAMIDE DERIVATIVES AS ANTIMICROBIAL AGENTS<br/>[FR] DÉRIVÉS DE 2-AMINO-1,8-NAPHTYRIDINE-3-CARBOXAMIDE UTILISÉS COMME AGENTS ANTIMICROBIENS
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2013072882A1
公开(公告)日:2013-05-23
The present invention concerns novel 2-amino-1,8-naphthyridine-3-carboxamide derivatives of formula I, a pharmaceutical antibacterial composition containing them and the use of these compounds in the manufacture of a medicament for the treatment of infections (e.g. bacterial infections). These compounds are useful antimicrobial agents effective against a variety of human and veterinary pathogens including among others Gram-positive and Gram-negative aerobic and anaerobic bacteria.
Stereoselective [4+2]‐Cycloaddition with Chiral Alkenylboranes
作者:Dongshun Ni、Brittany P. Witherspoon、Hong Zhang、Chen Zhou、K. N. Houk、M. Kevin Brown
DOI:10.1002/anie.202000652
日期:2020.7.6
A method for the stereoselective [4+2]‐cycloaddition of alkenylboranes and dienes is presented. This transformation was accomplished through the introduction of a new strategy that involves the use of chiral N‐protonated alkenyl oxazaborolidines as dieneophiles. The reaction leads to the formation of products that can be readily derivatized to more complex structural motifs through stereospecific transformations
作者:Siu Min Tan、Anthony C. Willis、Michael N. Paddon‐Row、Michael S. Sherburn
DOI:10.1002/anie.201510925
日期:2016.2.24
combining the powerful twofold diene‐transmissive Diels–Alder chemistry of [3]dendralenes with the simplicity of enamine formation. On mixing at ambient temperature, a simple dienal condenses with a primary or secondary amine to generate the enamine, a 1‐amino‐[3]dendralene in situ, and this participates as a double diene in a sequence of two Diels–Alder events with separate dienophiles. Overall, four