Readily Accessible 1,2-Amino Ether Ligands for Enantioselective Intramolecular Carbolithiation
摘要:
A new class of chiral 1,2-amino ether ligands, readily accessible from naturally occurring alpha-amino- or alpha-hydroxy acids, was found to provide high levels of both conversion and stereocontrol (up to 95:5 er) in intramolecular carbolithiation reactions, outperforming the benchmark ligand (-)-sparteine. The ligand could, be used in a substoichiometric amount (0.25 equiv) without significant loss of enantios electivity.
Readily Accessible 1,2-Amino Ether Ligands for Enantioselective Intramolecular Carbolithiation
摘要:
A new class of chiral 1,2-amino ether ligands, readily accessible from naturally occurring alpha-amino- or alpha-hydroxy acids, was found to provide high levels of both conversion and stereocontrol (up to 95:5 er) in intramolecular carbolithiation reactions, outperforming the benchmark ligand (-)-sparteine. The ligand could, be used in a substoichiometric amount (0.25 equiv) without significant loss of enantios electivity.
Carbonylamino Pyrrolopyrazole compounds of formula I, compositions including these compounds and methods of their use are provided. Preferred compounds of formula I have activity as protein kinase inhibitors, including as inhibitors of PAK4.
2-hydroxyamide derivatives are produced based on the kineticresolution of racemic 2-hydroxyamides with a diphenylacetyl component and (R)-benzotetramisole ((R)-BTM), a chiral acyl-transfer catalyst, via asymmetric esterification and acylation. It was revealed that a tertiary amide can be used with this novel protocol to achieve high selectivity (22 examples; s-value reaching over 250). The resulting chiral
(EN) Carbonylamino Pyrrolopyrazole compounds of formula (I), compositions including these compounds and methods of their use are provided. Preferred compounds of formula (I) have activity as protein kinase inhibitors, including as inhibitors of PAK4.(FR) La présente invention concerne des composés de carbonylamino-pyrrolopyrazole de formule I, des compositions comprenant ces composés et des procédés pour leur utilisation. Les composés de formule I préférés ont une activité en tant qu'inhibiteurs de protéine kinase, y compris en tant qu'inhibiteurs de PAK4.
Readily Accessible 1,2-Amino Ether Ligands for Enantioselective Intramolecular Carbolithiation
A new class of chiral 1,2-amino ether ligands, readily accessible from naturally occurring alpha-amino- or alpha-hydroxy acids, was found to provide high levels of both conversion and stereocontrol (up to 95:5 er) in intramolecular carbolithiation reactions, outperforming the benchmark ligand (-)-sparteine. The ligand could, be used in a substoichiometric amount (0.25 equiv) without significant loss of enantios electivity.