[EN] COMPOUNDS AS DGAT-1 INHIBITORS<br/>[FR] COMPOSÉS EN TANT QU'INHIBITEURS DE DGAT-1
申请人:MERCK SHARP & DOHME
公开号:WO2013096093A1
公开(公告)日:2013-06-27
Described herein are compounds of formula I. The compounds of formula I act as DGAT1 inhibitors and can be useful in preventing, treating or acting as a remedial agent for hyperlipidemia, diabetes mellitus and obesity.
An efficient Cu-catalyzed cascade reaction involving N–O bond cleavage and C–C/C–N/N–N bond formations is developed to afford various 1,3- and 1,3,4-substituted pyrazoles.
Facile synthesis of pyrazoles by iron-catalyzed regioselective cyclization of hydrazone and 1,2-diol under ligand-free conditions
作者:Niranjan Panda、Subhadra Ojha
DOI:10.1016/j.jorganchem.2018.02.043
日期:2018.4
A facile synthesis of pyrazoles by the cyclization of hydrazones and 1,2-diols was described. In the presence of ferric nitrate, the reaction occurs under neat conditions and makes the use of potassium persulfate to oxidize the diol to α-hydroxy carbaldehyde for the reaction with hydrazones to produce 1,3- and 1,3,5-substituted pyrazoles selectively. The overall regioselective transformation occurs
Primary Vinyl Ethers as Acetylene Surrogate: A Flexible Tool for Deuterium-Labeled Pyrazole Synthesis
作者:Maria S. Ledovskaya、Vladimir V. Voronin、Mikhail V. Polynski、Andrey N. Lebedev、Valentine P. Ananikov
DOI:10.1002/ejoc.202000674
日期:2020.8.9
A novel synthetic path to 1,3‐disubstituted pyrazoles, 4,5‐dideuteropyrazoles and 5‐deuteropyrazoles based on the interaction of the readily available vinyl ethers and in situ generated nitrile imines was developed. The joint experimental and computational study clarified the mechanism of the process and allowed us to propose a convenient access to regioselectively deuterated pyrazoles.
Ce-catalyzed regioselective synthesis of pyrazoles from 1,2-diols <i>via</i> tandem oxidation and C–C/C–N bond formation
作者:Chandan Kumar Pal、Ashis Kumar Jena
DOI:10.1039/d2ob01996e
日期:——
novel and efficient cerium-catalyzed tandem oxidation and intermolecular ring cyclization of vicinal diols with hydrazones has been achieved for the regioselective synthesis of pyrazolederivatives. The corresponding 1,3-di- and 1,3,5-trisubstituted pyrazoles were obtained in moderate to excellent yields. The reaction has the advantages of mild conditions, easily available starting materials, broad substrate