HETEROCYCLIC TRIAZOLE COMPOUNDS AS AGONISTS OF THE APJ RECEPTOR
申请人:AMGEN INC.
公开号:US20170320860A1
公开(公告)日:2017-11-09
Compounds of Formula I and Formula II, pharmaceutically acceptable salts thereof, stereoisomers of any of the foregoing, or mixtures thereof are agonists of the APJ Receptor and may have use in treating cardiovascular and other conditions. Compounds of Formula I and Formula II have the following structures:
where the definitions of the variables are provided herein.
<i>anti</i>-Selective Catalytic Asymmetric Nitroaldol Reaction of α-Keto Esters: Intriguing Solvent Effect, Flow Reaction, and Synthesis of Active Pharmaceutical Ingredients
nitroalkanes and α-ketoesters in an anti-selective manner to afford synthetically versatile, densely functionalized, and optically active α-nitro tertiary alcohols. A chiral diamide ligand captured two distinct metal cations, giving rise to a catalytically competent solid-phase heterobimetallic catalyst by simple mixing via self-assembly. The advantage of the solid-phase asymmetric catalyst was realized
Nickel-Catalyzed Amide Bond Formation from Methyl Esters
作者:Taoufik Ben Halima、Jeanne Masson-Makdissi、Stephen G. Newman
DOI:10.1002/anie.201808560
日期:2018.9.24
reactions, the synthesis of amide bonds is accomplished primarily by wasteful methods that proceed by stoichiometric activation of one of the starting materials. We report a nickel‐catalyzed procedure that can enable diverse amides to be synthesized from abundant methylester starting materials, producing only volatile alcohol as a stoichiometric waste product. In contrast to acid‐ and base‐mediated amidations
[EN] DEHYDRATIVE CYCLIZATION OF PENTITOLS USING WATER-TOLERANT LEWIS ACID CATALYSTS UNDER MILD CONDITIONS AND DERIVATIVES<br/>[FR] CYCLISATION PAR DÉSHYDRATATION DE PENTITOLS À L'AIDE DE CATALYSEURS DE TYPE ACIDE DE LEWIS TOLÉRANTS À L'EAU DANS DES CONDITIONS DOUCES, ET DÉRIVÉS CORRESPONDANTS
申请人:ARCHER DANIELS MIDLAND CO
公开号:WO2017030684A1
公开(公告)日:2017-02-23
A catalytic process for the dehydrative cyclization of pentitols to synthesize anhydropentitols is described. Water-tolerant Lewis acids (in particular, metal triflates) are employed as catalysts to improve conversion and anhydropentitol selectivity at ultra-low catalyst loadings. The process can produce cyclic ether triols in high yields with concurrent complete pentitol conversion.
A DFT conformational analysis and VCD study on methyl tetrahydrofuran-2-carboxylate
作者:Tom Kuppens、Koen Vandyck、Johan van der Eycken、Wouter Herrebout、Benjamin van der Veken、Patrick Bultinck
DOI:10.1016/j.saa.2006.07.034
日期:2007.6
basis set and the collection of nine functionals from above, the dipole and rotationalstrengths were calculated, and compared to experimental values which were extracted from the experimental IR and VCD spectra for (+)-(S)-methyl tetrahydrofuran-2-carboxylate. A detailed analysis on the agreement between experiment and simulated spectra was performed by assigning the experimental bands based on the