Highly Diastereoselective Reaction of 2-Azanorbornyl Enolates with Electrophiles
摘要:
A highly diastereoselective reaction of 2-azanorbornyl enolates with electrophiles has been studied. Deprotonation of 4 with LDA at low temperature affords the corresponding exocyclic lithium enolate 5, which reacts with different electrophiles such as alkyl halides, aldehydes and acyl chlorides to give the corresponding exo addition products 6, The products are formed in good yields and with diastereoselectivities above 95%.
Synthesis and evaluation of N,S-compounds as chiral ligands for transfer hydrogenation of acetophenoneElectronic supplementary information (ESI) available: NMR spectra. See http://www.rsc.org/suppdata/ob/b2/b208907f/
作者:Jenny K. Ekegren、Peter Roth、Klas Källström、Tibor Tarnai、Pher G. Andersson
DOI:10.1039/b208907f
日期:2003.1.13
New nitrogen- and sulfur-containing compounds, bicyclic and monocyclic, were prepared and evaluated as ligands in the transfer hydrogenation of acetophenone. Utilising [Ir(COD)Cl]2 as metal precursor the best result, 80% ee, was obtained using a bicyclic sulfoxide ligand.
[EN] MACROCYCLIC INHIBITORS OF PEPTIDYLARGININE DEIMINASES<br/>[FR] INHIBITEURS MACROCYCLIQUES DE PEPTIDYLARGININE DÉIMINASES
申请人:GILEAD SCIENCES INC
公开号:WO2021222353A1
公开(公告)日:2021-11-04
The present disclosure relates to novel compounds for use in therapeutic treatement of a disease associated with peptidylarginine deiminases (PADs), such as peptidylarginine deiminase type 4 (PAD4). The present disclosure also relates to processes and intermediates for the preparation of such compounds, methods of using such compounds and pharmaceutical compositions comprising the compounds described herein.
A rigid dirhodium(II) carboxylate as an efficient catalyst for the asymmetric cyclopropanation of olefins
作者:Sophie K Bertilsson、Pher G Andersson
DOI:10.1016/s0022-328x(00)00025-5
日期:2000.5
The dirhodium(II) complex 7 of (1S,3R,4R)-2-(p-tert-butylphenylsulphonyl)-2-aza-bicyclo[2.2.1]heptane-3-carboxylic acid (3) (or its enantiomer) was synthesised in four steps from cyclopentadiene, (R)- or (S)-phenylethylamine and methyl glyoxylate. Complex 7 was evaluated as a catalyst in the asymmetriccyclopropanation of alkenes with vinyl- and phenyl-diazoesters, resulting in enantioselectivity of
Highly Diastereoselective Reaction of 2-Azanorbornyl Enolates with Electrophiles
作者:Diego A. Alonso、Sofia J. M. Nordin、Pher G. Andersson
DOI:10.1021/ol990942c
日期:1999.11.1
A highly diastereoselective reaction of 2-azanorbornyl enolates with electrophiles has been studied. Deprotonation of 4 with LDA at low temperature affords the corresponding exocyclic lithium enolate 5, which reacts with different electrophiles such as alkyl halides, aldehydes and acyl chlorides to give the corresponding exo addition products 6, The products are formed in good yields and with diastereoselectivities above 95%.
[EN] INHIBITORS OF PEPTIDYLARGININE DEIMINASES<br/>[FR] INHIBITEURS DE PEPTIDYLARGININE DÉIMINASES