Substituted Ethane-1,2-Diamines for the Treatment of Alzheimer's Disease II
申请人:Peters Stefan
公开号:US20080293680A1
公开(公告)日:2008-11-27
The invention relates to a compound of the formula (I), wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
and R
8
are defined as in the specification and claims and to its use for treating or preventing Alzheimer's disease and other similar diseases.
Stereoselective C-terminal peptide elongation from Chan–Lam–Evans reaction generated isopropenyl esters
作者:Luuk Steemers、Jan H. van Maarseveen
DOI:10.1039/c8ob02102c
日期:——
C-Terminal dipeptide isopropenyl esters were synthesised by a Cu(II)-mediated Chan–Lam–Evans enol esterification of peptide carboxylic acids and isoprenyl boroxine. These shelf stable peptide esters could be coupled stereoselectively with a variety of amino acid and dipeptide nucleophiles in high yield and purity in the presence of pyrazole/DBU as the catalyst.