[EN] 3-AMINO-2-[2-(ACYLAMINO)PYRIDIN-4-YL]-1,5,6,7-TETRAHYDRO-4H-PYRROLO[3,2-C]PYRIDIN-4-ONE AS CSNK1 INHIBITORS [FR] 3-AMINO-2-[2-(ACYLAMINO)PYRIDIN-4-YL]-1,5-TÉTRAHYDRO-4H-PYRROLO[3,2-C]PYRIDIN-4-ONE EN TANT QU'INHIBITEURS DE CSNK1
Simple Synthesis of Tetrahydrofurans via Reaction of Enolates of γ-Chloroketones with Aldehydes
作者:Mieczysaw Mąkosza、Micha Barbasiewicz
DOI:10.1055/s-2006-926387
日期:——
Enolates of γ-chloropropyl ketones react with aldehydes in protic media to form aldol type adducts that cyclize to substituted tetrahydrofurans, whereas in aprotic media they react mainly along an intramolecular substitution pathway giving cyclopropyl ketones. A substantial increase in the nucleophilicity of the enolates and the electrophilicity of aldehydes favors the formation of tetrahydrofurans.
gamma-halocarbanions that undergo fast intramolecular substitution of the halogen to produce substituted cyclopropanes. We found that these short-lived carbanionic intermediates can be trapped with active external electrophilic partners, such as aldehydes, to give the aldol anions. These anions then undergo rapid intramolecular substitution of chloride to produce 2,3-disubstituted tetrahydrofurans. Under the right
Synthesis of (1′, 2′-trans)-3-phenyl-1-[2′-(N-pyrrolidinyl)cyclohexyl]-pyrrolid-2-ones as κ-selective opiates
作者:Chen-Yu Cheng、Hrong-Yow Lu、Fung-Mel Lee、S. William Tam
DOI:10.1002/jps.2600790821
日期:1990.8
(1',2'-trans)-3-Phenyl-1-[2'-(N-pyrrolidinyl)cyclohexyl]pyrrolid-2 -ones (1 and 2) and their 3,4-dichlorophenyl analogues (4 and 5) were synthesized as lactam analogues of U-50,488 (I; a kappa-opiate analgesic developed by Upjohn Company). Compounds 1 and 2 were found to be oxidized by air, in the presence of a strong base, to the 3-hydroxylated derivative 3. Compound 4 gave slightly higher kappa-affinity
in this area, it remains challenging to develop enantioselective transformations direct from carboxylic acids. Herein we disclose a photoelectrocatalytic method for the direct and enantioselective decarboxylative cyanation. The photoelectrochemical reactions convert carboxylic acids to enantioenriched nitriles by employing cerium/copper relay catalysis with a cerium salt for catalytic decarboxylation
SUBSTITUTED PHENYLACETONITRILES AND DERIVATIVES. 1-PHENYL-1-CYANOCYCLOPROPANE, ALPHA-PHENYL-GAMMA-HYDROXYBUTYRONITRILE, ALPHA-PHENYL-GAMMA-CHLOROBUTYRONITRILE AND ALPHA-PHENYLCROTONONITRILE<sup>1</sup>