Process for the preparation of enantiopure pyrrolidin-2-one derivatives
申请人:Iding Hans
公开号:US20050065204A1
公开(公告)日:2005-03-24
The present invention relates to a process for the preparation of enantiopure intermediates useful in the synthesis of valuable pharmaceutically active compounds, e.g. MAOB inhibitors, and to novel intermediates of formulae I and II
wherein R
21
, R
22
, R
23
and R
24
are as defined in the description and claims.
The invention relates to racemic or enantiomerically pure 4-pyrrolidino derivatives, processes for their preparation, pharmaceutical compositions comprising said derivatives, and their use in the prevention and treatment of illness, in particular which is mediated by monoamine oxidase B inhibitors, in particular Alzheimer's disease or senile dementia.
Radical chlorination of non-resonant heterobenzylic C‒H bonds and high-throughput diversification of heterocycles
作者:Dung L. Golden、Kaitlyn M. Flynn、Santeri Aikonen、Christopher M. Hanneman、Dipannita Kalyani、Shane W. Krska、Robert S. Paton、Shannon S. Stahl
DOI:10.1016/j.chempr.2024.04.001
日期:2024.4
Site-selective functionalization of the heterobenzylic C(sp)–H bonds of pyridines and related heteroaromatic compounds presents challenges associated with the basic nitrogen atom and the variable reactivity among different positions on the heteroaromatic ring. Methods for functionalization of 2- and 4-alkylpyridines are increasingly available through polar pathways that leverage resonance stabilization