Anti-Markovnikov additions to non-conjugated unsaturated amines in superacid are reported. In situ NMR studies, DFT calculations and labelled substrates reactions support the involvement of new ammoniumâcarbenium superelectrophiles in this original process.
PYRIMIDINE SULFONAMIDE ANALOGS AND THEIR USE AS AGONISTS OF THE WNT-BETA-CATENIN CELLULAR MESSAGING SYSTEM
申请人:Hauze Diane Barbara
公开号:US20090048282A1
公开(公告)日:2009-02-19
The present invention relates to pyrimidine sulfonamide analogs, methods of making pyrimidine sulfonamide analogs, compositions comprising a pyrimidine sulfonamide analog, and methods for treating canonical Wnt-β-catenin cellular messaging system-related disorders comprising administering to a subject in need thereof an effective amount of a pyrimidine sulfonamide analog.
Small Molecule Modifiers of MicroRNA miR-122 Function for the Treatment of Hepatitis C Virus Infection and Hepatocellular Carcinoma
作者:Douglas D. Young、Colleen M. Connelly、Christoph Grohmann、Alexander Deiters
DOI:10.1021/ja910275u
日期:2010.6.16
MicroRNAs are a recently discovered new class of important endogenous regulators of gene function. Aberrant regulation of microRNAs has been linked to various human diseases, most importantly cancer. Small molecule intervention of microRNA misregulation has the potential to provide new therapeutic approaches to such diseases. Here, we report the first small molecule inhibitors and activators of the liver-specific microRNA miR-122. This microRNA is the most abundant microRNA in the liver and is involved in hepatocellular carcinoma development and hepatitis C virus (HCV) infection. Our small molecule inhibitors reduce viral replication in liver cells and represent a new approach to the treatment of HCV infections. Moreover, small molecule activation of miR-122 in liver cancer cells selectively induced apoptosis through caspase activation, thus having implications in cancer chemotherapy. In addition to providing a new approach for the development of therapeutics, small molecule modifiers of miR-122 function are unique tools for exploring miR-122 biogenesis.
Selective Anti-Markovnikov Cyclization and Hydrofluorination Reaction in Superacid HF/SbF<sub>5</sub>: A Tool in the Design of Nitrogen-Containing (Fluorinated) Polycyclic Systems
The selective synthesis of tetrahydroquinolines and fluorinated arylamines was performed in superacid HF/SbF5 through a superelectrophilic ammonium-carbenium activation process. This anti-Markovnikov oriented reaction was applied to the straightforward synthesis of highly valued (fluorinated) nitrogen-containing heterocyclic compounds.