Nucleotide competing reverse transcriptase inhibitors: Discovery of a series of non-basic benzofurano[3,2-d]pyrimidin-2-one derived inhibitors
摘要:
A HTS screen led to the identification of a benzofurano[3,2-d]pyrimidin-2-one core structure which upon further optimization resulted in 1 as a potent HIV-1 nucleotide competing reverse transcriptase inhibitor (NcRTI). Investigation of the SAR at N-1 allowed significant improvements in potency and when combined with the incorporation of heterocycles at C-8 resulted in potent analogues not requiring a basic amine to achieve antiviral activity. Additional modifications at N-1 resulted in 33 which demonstrated excellent antiviral potency and improved physicochemical properties. (C) 2013 Published by Elsevier Ltd.
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
The heterogeneously catalyzed diastereoselective hydrogenation of furan-2-carboxylic acid derivatives modified with chiral auxiliaries is described. Chiral auxiliaries, catalysts, solvents, and additives were optimized for the reaction. Finally, the hydrogenation of furan-2-yl-[(S)-2-(hydroxydiphenylmethyl)-pyrrolidin-1-yl]-methanone resulted in a high diastereoselectivity. Removal of the auxiliary gave the tetrahydrofuran-2-carboxylic acid in 95% ee.
In situ generated “lanthanum(iii) nitrate alkoxide” as a highly active and nearly neutral transesterification catalyst
作者:Manabu Hatano、Sho Kamiya、Kazuaki Ishihara
DOI:10.1039/c2cc34987f
日期:——
In situ generated lanthanum(III) nitrate alkoxide is a highly active and nearly neutral transesterification catalyst, which can promote non-epimerized transesterification of α-substituted chiral carboxylic esters under reflux conditions.
What is proposed are specific tetrahydrofuran derivatives of the formula (I), fragrance and aroma substance mixtures comprising these tetrahydrofuran derivatives, their use in fragrance or aroma substance (mixture) and corresponding perfumed products.