NOVEL NEUROKININ 1 RECEPTOR ANTAGONIST COMPOUNDS II
申请人:LEO PHARMA A/S
公开号:US20160207930A1
公开(公告)日:2016-07-21
The invention relates novel NK1 receptor antagonists represented in formula A, wherein R
1
and R
2
independently are selected from the group consisting of (C
1-4
)alkyl, (C
1-4
)haloalkyl, (C
1-4
)alkoxy, CD
3
or halogen; R
3
is selected from the group consisting of hydrogen, (C
1-4
)alkyl, (C
1-4
)haloalkyl and (C
1-4
)hydroxyalkyl; R
4
is selected from the group consisting of phenyl, 5-membered heteroaryl and 6-membered heteroaryl; R
5
and R
6
are independently selected from the group consisting of hydrogen, (C
1-4
)alkyl, (C
1-4
) hydroxyalkyl and (C
1-4
)haloalkyl and X and Y are independently selected from the group consisting of CH and N. The invention furthermore relates to intermediates for the preparation of said compounds, to their use in therapy, and to pharmaceutical compositions comprising said compounds.
A Quick Synthesis of 1-Arylpyrrolopyrazinones from Linear Alkynylamide Derivatives
作者:Imanol Tellitu、Esther Domínguez、Leticia Pardo
DOI:10.1055/s-0029-1219218
日期:2010.3
protecting group, the free amino group is used to accomplish a second heterocyclization process onto the newly formed carbonyl group. By appropriate manipulation of these protecting groups and selection of reaction conditions, a series of pyrrolopyrazinones can be obtained in different stages of hydrogenation. hypervalent iodine - alkynylamides - reductive aminations - pyrazinones - bicyclic compounds