Truce–Smiles Rearrangements by Strain Release: Harnessing Primary Alkyl Radicals for Metal‐Free Arylation
作者:David M. Whalley、Jayasree Seayad、Michael F. Greaney
DOI:10.1002/anie.202108240
日期:2021.10.4
The ring-opening of 3-aminocyclobutanone oximes enables easy generation of primaryalkylradicals, capable of undergoing an unprecedented strain-release, desulfonylative radical Truce–Smiles rearrangement, providing divergent access to valuable 1,3 diamines and unnatural β-amino acids. Characterized by mild conditions and wide scope of migrating species, this protocol allows the modular assembly of
Preparation of Optically Pure ß-Amino Acid Type Active Pharmaceutical Ingredients and Intermediates thereof
申请人:LEK Pharmaceuticals d.d.
公开号:EP2615080A1
公开(公告)日:2013-07-17
The present invention relates to the preparation of optically resolved chiral compounds of β-amino acid type active pharmaceutical ingredients (API), more specifically to β-aminobutyryl substituted compounds and especially β-aminobutyryl compounds having γ-bound aryl groups. The present invention more particularly relates to the preparation of enantiomerically enriched chiral compounds useful as intermediates for the preparation of anti-diabetic agents, preferably sitagliptin.
[EN] PREPARATION OF OPTICALLY PURE ß-AMINO ACID TYPE ACTIVE PHARMACEUTICAL INGREDIENTS AND INTERMEDIATES THEREOF<br/>[FR] PRÉPARATION D'INGRÉDIENTS PHARMACEUTIQUES ACTIFS DE TYPE ACIDE SS-AMINÉ OPTIQUEMENT PURS ET LEURS INTERMÉDIAIRES
申请人:LEK PHARMACEUTICALS
公开号:WO2013104774A1
公开(公告)日:2013-07-18
The present invention relates to the preparation of optically resolved chiral compounds of β-amino acid type active pharmaceutical ingredients (API), more specifically to β-aminobutyryl substituted compounds and especially β-aminobutyryl compounds having γ-bound aryl groups. The present invention more particularly relates to the preparation of enantiomerically enriched chiral compounds useful as intermediates for the preparation of anti-diabetic agents, preferably sitagliptin.
The invention relates to the preparation of chiral compounds, in particular to the preparation of chiral compounds which may be used as intermediates for the preparation of anti-diabetic agents, preferably sitagliptin.