、 N-2-吡啶基丁酰胺 、 disodium;hydrogen phosphate 、 溴 在
水 作用下,
以
水 、 溶剂黄146 为溶剂,
反应 7.0h,
以43.7 g (yield: 89.8%) of 2-butanamido-5-bromopyridine (IIf) was obtained as a pale brown crystal的产率得到N-(5-溴-2-吡啶基)丁酰胺
参考文献:
名称:
Method of producing 2-amino-3-nitro-5-halogenopyridine
The present provides a condensed pyridine compound (I) represented by the following formula:
1
ring A represents benzene ring, pyridine ring, thiophene ring or furan ring; and
B represents
2
its pharmaceutically acceptable salt or hydrates thereof, which isa clinically useful medicament having a serotonin antagonism, in particular, that for treating, ameliorating or preventing spastic paralysis or central muscle relaxants for ameliorating myotonia.
Method of producing 2-acyl amino 5-halogenopyridine compounds
申请人:Ichikawa Gosei Chemical Co., Ltd.
公开号:US05290943A1
公开(公告)日:1994-03-01
A 2-amino-3-nitro-5-halogenopyridine is formed from a 2-acylaminopyridine by way of a 2-acylamino-5-halogenopyridine. The 2-acetamido-5-bromopyridine may be formed from the 2-acylaminopyridine by way of a 2-acylaminopyridinium-HBr.sub.3 salt.
The present provides a condensed pyridine compound (I) represented by the following formula:
(wherein, R2 represents
ring A represents benzene ring, pyridine ring, thiophene ring or furan ring; and
B represents
its pharmaceutically acceptable salt or hydrates thereof, which is a clinically useful medicament having a serotonin antagonism, in particular, that for treating, ameliorating or preventing spastic paralysis or central muscle relaxants for ameliorating myotonia.
Clinically highly useful drugs having an antagonism to serotonin, in particular, central muscle relaxing drugs for treating, ameliorating or preventing spastic paralysis or ameliorating myotonia and comprising fused pyridine derivatives represented by general formula (I), pharmacologically acceptable salts thereof or hydrates of either (I) or (1), wherein the ring A represents a benzene, pyridine, thiophene or furan ring; and B represents (2).