Heterocyclic Oxime Compounds, Process for Their Preparation and Pharmaceutical Compositions Containing Them
申请人:Suzenet Franck
公开号:US20090274674A1
公开(公告)日:2009-11-05
Compounds of formula (I):
wherein:
X represents a hydrogen or halogen atom or an alkyl group,
R
1
, R
2
, R
3
and R
4
are as defined in the description,
A represents an alkylene chain as defined in the description,
B represents an alkyl or alkenyl group substituted by a group
D represents a pyridine nucleus.
Efficient syntheses of 4-, 5- and 6-benzoyl-7-azaindoles are described. Two strategies were developed: i) formation of 4-lithio and 5-lithio-7-azaindole and reaction with aldehydes and ii) organomagnesium addition to 6-cyano-7-azaindole. Both methods should allow the introduction of a diverse range of acyl substituents.