New Cyclization Reactions of 3-Dialkylamino-4-aminopyridines under Conditions of Nitration
摘要:
Treatment of 3-dialkylamino-4-aminopyridines (1) with nitric and sulfuric acids affords imidazo[4,5-c]pyridine derivatives (2, 3 and 4) and 1,2,3-triazolo[4,5-c]pyridine 2-oxides (5) by cyclization reaction of the corresponding 4-nitroaminopyridines.
Tricyclic N-heteroaryl-carboxamide derivatives, preparation and therapeutic use thereof
申请人:DUBOIS Laurent
公开号:US20100173929A1
公开(公告)日:2010-07-08
The invention relates to tricyclic N-heteroaryl-carboxamide derivatives having the formula (I):
Wherein A, P, W, Z
1
, Z
2
, Z
3
, Z
4
, Z
5
, Z
6
, Z
7
, Z
8
, R
3
and R
3
′ are as described herein. The invention also relates to a method for preparing the same and to the therapeutic use thereof.
Treatment of 3-dialkylamino-4-aminopyridines (1) with nitric and sulfuric acids affords imidazo[4,5-c]pyridine derivatives (2, 3 and 4) and 1,2,3-triazolo[4,5-c]pyridine 2-oxides (5) by cyclization reaction of the corresponding 4-nitroaminopyridines.