113273-65-7Relevant academic research and scientific papers
Alternating asymmetric self-induction in functionalized pyrrolidine oligomers
Kudryavtsev, Konstantin V.,Ivantcova, Polina M.,Churakov, Andrei V.,Wiedmann, Steffen,Luy, Burkhard,Muhle-Goll, Claudia,Zefirov, Nikolay S.,Braese, Stefan
, p. 12736 - 12740 (2013)
Rainbow of pyrrolidines: Red, orange, yellow, green, blue (indigo, violet). Copyright
1,3-Dipolar Cycloadditions of Stabilized Azomethine Ylides and Electrophilic Alkenes Mediated by a Recyclable TSIL·AgOAc Catalyst
Lledó, David,Grindlay, Guillermo,Sansano, José Miguel
, p. 4095 - 4100 (2019/06/25)
The synthesis of a task-specific ionic liquid (TSIL) based on a BMIM ionic liquid phosphane is achieved by modification of the original procedure. It is used as a ligand with AgOAc, and the resulting complex is fully characterized. This catalytic system promotes the 1,3-dipolar cycloaddition of stabilized azomethine ylides and electrophilic alkenes using a green methodology. The green character was analyzed using an overall set of parameters finding the optimal conditions and individualized separation/purification methods for each cycloadduct. The determination of the most important green metrics is reported in this survey, demonstrating the value of this methodology on a laboratory scale or even at an industrial level.
Design of small-molecule thrombin inhibitors based on the cis-5-phenylproline scaffold
Kudryavtsev,Shulga,Chupakhin,Churakov,Datsuk,Zabolotnev,Zefirov
scheme or table, p. 685 - 693 (2012/02/05)
The design of novel organic compounds containing no strongly basic amidine or guanidine functional groups typical of serine protease inhibitors was performed to develop an oral anticoagulant drug. A three-dimensional computational model for thrombin active site was constructed and optimized for docking of small-molecule organic compounds and calculating the energies of inhibitor-enzyme interactions. Novel racemic derivatives of 1-[2-(4- chlorophenylthio)acetyl]-5-phenylpyrrolidine-2,4-dicarboxylic acids were synthesized for which Cl-π interactions between the inhibitors and the S1 pocket of thrombin active site are predicted by modeling. The compounds synthesized deactivate thrombin in vitro and the inhibition properties show good correlations with the results of calculations.
C 2-Symmetric S/C/S ligands based on N-heterocyclic carbenes: A new ligand architecture for asymmetric catalysis
Iglesias-Sigueenza, Javier,Ros, Abel,Diez, Elena,Magriz, Antonio,Vazquez, Arcadio,Alvarez, Eleuterio,Fernandez, Rosario,Lassaletta, Jose M.
scheme or table, p. 8485 - 8488 (2010/10/04)
Neutral, C2-symmetric S/C/S ligands based on N-heterocyclic carbenes and thioether functionalities were incorporated into transition metal complexes characterised by two direct metal-stereogenic sulfur bonds. This new ligand design was applied
A convenient procedure for the catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides and alkenes
Alemparte, Carlos,Blay, Gonzalo,Jorgensen, Karl Anker
, p. 4569 - 4572 (2007/10/03)
(Chemical Equation Presented) Silver fluoride and cinchona alkaloids catalyze the diastereo- and enantioselective 1,3-dipolar cycloaddition between azomethine ylides, generated from N-alkylideneglycine esters, and acrylates to give the corresponding endo-adducts. Azomethine ylides derived from aromatic and aliphatic aldehydes react in a highly diastereoselective reaction with good yields and enantioselectivities of the substituted pyrrolidines.
Lithium Bromide/Triethylamine Induced Cycloaddition of N-Alkylidene 2-Amino Esters and Amides to Electron-Deficient Olefins with High Regio- and Stereoselectivity
Tsuge, Otohiko,Kanemasa, Shuji,Yoshioka, Manabu
, p. 1384 - 1391 (2007/10/02)
The imines of 2-amino esters and amides derived from glycine, alanine, and valine are deprotonated by the action of a lithium halide and triethylamine (or DBU).The resulting anionic intermediates undergo highly regio- and stereoselective cycloadditions with a variety of olefins activated by carbonyl-type substituents to produce stereochemically defined derivatives of proline esters or amides.The scope and limitations of this novel cycloaddition are discussed.
