Inhibitors of Acyl CoA:Cholesterol Acyltransferase
摘要:
Conformational restriction of previously disclosed acyclic diphenylethyl)diphenylacetamides led to the discovery of several potent inhibitors of acyl CoA:cholesterol acyltransferase (ACAT). cis-[2-(4-Hydroxyphenyl)-1-indanyl]diphenylacetamide (4a) was the mo st potent ACAT inhibitor identified (IC50 = 0.04 mu M in an in vitro rat hepatic microsomal ACAT assay, ED(50) = 0.72 mg/kg/day in cholesterol-fed hamsters).
Activation of Alcohols with Carbon Dioxide: Intermolecular Allylation of Weakly Acidic Pronucleophiles
作者:Simon B. Lang、Theresa M. Locascio、Jon A. Tunge
DOI:10.1021/ol502023d
日期:2014.8.15
coupling of allyl alcohols with nitroalkanes, nitriles, and aldehydes using catalytic Pd(PPh3)4 has been accomplished viaactivation of C–OH bonds with CO2. The in situ formation of carbonates from alcohols and CO2 facilitates oxidativeaddition to Pd to form reactive π-allylpalladium intermediates. In addition, the formation of a strong baseactivates nucleophiles toward the reaction with the π-allylpalladium
Nickel-Catalyzed α-Benzylation of Arylacetonitriles <i>via</i>
CO Activation
作者:Jing Xiao、Jia Yang、Tieqiao Chen、Li-Biao Han
DOI:10.1002/adsc.201500822
日期:2016.3.3
Efficient Ni‐catalyzeddirect cross‐couplings of benzylic alcohol derivatives with arylacetonitriles via CO activation are described. Various α‐benzylated arylacetonitriles including those with functional groups can be prepared undermild reaction conditions.
Enantioselective Rhodium-Catalyzed Allylic Substitution with a Nitrile Anion: Construction of Acyclic Quaternary Carbon Stereogenic Centers
作者:Ben W. H. Turnbull、P. Andrew Evans
DOI:10.1021/jacs.5b02810
日期:2015.5.20
A direct and highly enantioselective rhodium-catalyzed allylicalkylation of allyl benzoate with α-substituted benzyl nitrile pronucleophiles is described. This simple protocol provides a new approach toward the synthesis of acyclic quaternary carbon stereogenic centers and provides the firstexample of the direct asymmetricalkylation of a nitrile anion. The synthetic utility of the nitrile products
Manganese Catalyzed α-Alkylation of Nitriles with Primary Alcohols
作者:Akash Jana、C. Bal Reddy、Biplab Maji
DOI:10.1021/acscatal.8b02998
日期:2018.10.5
The manganese(I) complex bearing a bidentate hydrazone ligand efficiently catalyzes the α-alkylations of nitrile using primary alcohols as alkylating agents. α-Functionalized nitriles were selectively obtained in good to excellent yields. The reaction is environmentally benign, producing water as the sole byproduct. Both benzylic and aliphatic alcohols could be used and functional groups were tolerated
Assembly of α‐(Hetero)aryl Nitriles via Copper‐Catalyzed Coupling Reactions with (Hetero)aryl Chlorides and Bromides
作者:Ying Chen、Lanting Xu、Yongwen Jiang、Dawei Ma
DOI:10.1002/anie.202014638
日期:2021.3.22
conditions, affording α‐(hetero)arylacetonitriles via one‐pot decarboxylation. Additionally, the CuBr/oxalic diamide catalyzed coupling of (hetero)aryl bromides with α‐alkyl‐substituted ethyl cyanoacetates proceeds smoothly at 60 °C, leading to the formation of α‐alkyl (hetero)arylacetonitriles after decarboxylation. The method features a general substrate scope and is compatible with various functionalities