Azomethine ylide cycloaddition of 2-C-formyl glycals with α-amino acids for the synthesis of substituted pyrroles
作者:V. Veerabadhra Reddy、B.V. Subba Reddy
DOI:10.1016/j.tet.2021.132389
日期:2021.9
for the synthesis of pyrrole based acyclo-C-nucleosides, in particular an open-chain sugar substituted pyrrole derivatives by means of the condensation of 2-C-formyl glycals with α-aminoacids through an intramolecular azomethine cycloaddition under thermal conditions. The use of cyclic α-aminoacids provides the corresponding bicyclic pyrrole derivatives. This is a first report on the synthesis of pyrrole
Diaminophosphine Oxide Ligand Enabled Asymmetric Nickel-Catalyzed Hydrocarbamoylations of Alkenes
作者:Pavel A. Donets、Nicolai Cramer
DOI:10.1021/ja406730t
日期:2013.8.14
Chiral trivalent phosphorus species are the dominant class of ligands and the key controlling element in asymmetric homogeneous transition-metalcatalysis. Here, novel chiral diaminophosphine oxide ligands are described. The arising catalyst system with nickel(0) and trimethylaluminum efficiently activates formamide C-H bonds under mild conditions providing pyrrolidones via intramolecular hydrocarbamoylation
A General Approach to Dehydro-Freidinger Lactams: Ex-Chiral Pool Synthesis and Spectroscopic Evaluation as Potential Reverse Turn Inducers
作者:Tobias Hoffmann、Reiner Waibel、Peter Gmeiner
DOI:10.1021/jo0261653
日期:2003.1.1
Starting from natural alpha-amino acids, a practical synthesis of the dehydro-Freidinger lactams 9a-h based on the ring-closing olefin metathesis reaction was investigated. The presented examples comprise 6-, 7-, 8-, 9-, and 10-membered cyclic dipeptide mimics. Structural variations were demonstrated. We approached the metathesis precursors 8a-h employing an N-alkylation/peptide-coupling strategy.
[EN] MACROCYCLES CONTAINING A 1,3,4-OXADIAZOLE RING FOR USE AS MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR<br/>[FR] MACROCYCLES CONTENANT UN CYCLE 1,3,4-OXADIAZOLE DESTINÉS À ÊTRE UTILISÉS EN TANT QUE MODULATEURS DU RÉGULATEUR DE LA CONDUCTANCE TRANSMEMBRANAIRE DE LA FIBROSE KYSTIQUE
申请人:VERTEX PHARMA
公开号:WO2022109573A1
公开(公告)日:2022-05-27
This disclosure provides modulators of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR), pharmaceutical compositions containing at least one such modulator, methods of treatment of cystic fibrosis using such modulators and pharmaceutical compositions, and processes for making such modulators.
[EN] MACROCYCLIC COMPOUNDS AND RELATED COMPOSITONS AND METHODS OF USE<br/>[FR] COMPOSÉS MACROCYCLIQUES ET COMPOSITIONS ASSOCIÉES ET PROCÉDÉS D'UTILISATION