Diastereochemical Diversity of Imidazoline Scaffolds via Substrate Controlled TMSCl Mediated Cycloaddition of Azlactones
摘要:
We report herein a trimethylsilyl chloride mediated substrate controlled 1,3-dipolar cycloaddition for the diastereoselective synthesis of either syn- or anti-imidazolines. This method provides scaffolds with four points of diversity and control over two stereocenters.
Diastereochemical Diversity of Imidazoline Scaffolds via Substrate Controlled TMSCl Mediated Cycloaddition of Azlactones
摘要:
We report herein a trimethylsilyl chloride mediated substrate controlled 1,3-dipolar cycloaddition for the diastereoselective synthesis of either syn- or anti-imidazolines. This method provides scaffolds with four points of diversity and control over two stereocenters.
Merging Visible-Light Photoredox and Chiral Phosphate Catalysis for Asymmetric Friedel–Crafts Reaction with in Situ Generation of <i>N</i>-Acyl Imines
作者:Meng-Lan Shen、Yang Shen、Pu-Sheng Wang
DOI:10.1021/acs.orglett.9b00442
日期:2019.5.3
In the presence of visible-lightphotoredox and chiral phosphate catalysts, a novel asymmetric Friedel–Crafts reaction of indoles and readily accessible α-amino acid derived redox-active esters is established to afford enantioenriched 1-indolyl-1-alkylamine derivatives in moderate to high yields and with high levels of enantioselectivities. This method not only shows a mild and efficient alternative
[EN] BICYCLIC HETEROCYCLIC DERIVATIVES AS BROMODOMAIN INHIBITORS<br/>[FR] DÉRIVÉS BICYCLIQUES HÉTÉROCYCLIQUES COMME INHIBITEURS DE BROMODOMAINES
申请人:AURIGENE DISCOVERY TECH LTD
公开号:WO2015104653A1
公开(公告)日:2015-07-16
The present invention provides bicyclic heterocyclic derivatives of formula (I), which may be therapeutically useful, more particularly as bromodomain inhibitors; (I), in which R1, R2, R3, R4, L1, L2, Cy1, Cy2, X, n and dotted line are have the same meaning given in the specification, and pharmaceutically acceptable salts or pharmaceutically acceptable stereoisomers thereof that are useful in the treatment and prevention of diseases or disorder, in particular their use in diseases or disorder associated as bromodomain inhibitors. The present invention also provides preparation of the compounds and pharmaceutical formulations comprising at least one of bicyclic heterocyclic derivatives of formula (I), together with a pharmaceutically acceptable carrier, diluent or excipient therefor.
BICYCLIC HETEROCYCLIC DERIVATIVES AS BROMODOMAIN INHIBITORS
申请人:ORION CORPORATION
公开号:US20160368906A1
公开(公告)日:2016-12-22
The present disclosure provides bicyclic heterocyclic derivatives of formula (I), which may be therapeutically useful, more particularly as bromodomain inhibitors; (I), in which R
1
, R
2
, R
3
, R
4
, L
1
, L
2
, Cy
1
, Cy
2
, X, n, and dotted line have the same meaning given in the specification, and pharmaceutically acceptable salts or pharmaceutically acceptable stereoisomers thereof that are useful in the treatment and prevention of diseases or disorders, in particular their use in diseases or disorders associated as bromodomain inhibitors. The present disclosure also provides preparation of compounds and pharmaceutical formulations comprising at least one of bicyclic heterocyclic derivatives of formula (I), together with a pharmaceutically acceptable carrier, diluent, or excipient.
Efficient Ligand-Free, Palladium-Catalyzed Amidocarbonylation in Ionic Liquids: Facile Synthesis of <i>N</i>-Acyl-<font>α</font>-arylglycines
作者:Qing-Lu Zhao、Min Yang、Lai-Lai Wang
DOI:10.1080/00397910802369588
日期:2008.11.13
Abstract A ligand-free, palladium-catalyzedamidocarbonylation reaction of aromatic aldehyde, acetamide, and CO in ionic liquids [C4mim]PF6, [C6mim]PF6, [C8mim]PF6, and [C6mim]BF4 as solvents is developed. The yields decreased in the order [C6mim]PF6 > [C8mim]PF6 > [C4mim]PF6 > [C6mim]BF4, and substrate concentration affected the catalytic activity of amidocarbonylation. The excellent yield with up
A novel polymer incarcerated Pd catalyst (PI Pd 7c) was synthesized from amide-containing polymer 6b, and this catalyst was shown to be effective in amidocarbonylation, which is a versatile one-pot method for the preparation of N-acyl-α-amino acids. The reactions proceeded smoothly with a wide variety of substrates, and no leaching of the Pd metal to the reaction mixture was detected.