Certain 1,3-disubstituted isoquinoline derivatives
申请人:Eisai Co., Ltd.
公开号:US20040204421A1
公开(公告)日:2004-10-14
Condensed pyridine compounds represented by formula (I):
1
wherein: R
1
and R
3
are, independently, hydrogen, halogen, lower alkyl, or lower alkoxy; R
2
represents an amino substituent; ring A is a benzene ring, pyridine ring, thiophene ring, or furan ring; and B represents a substituent containing a ring structure. Also, pharmaceutically acceptable salt and hydrates thereof. These compounds are clinically useful medicaments having serotonin antagonism, and in particular, for treating, ameliorating, or preventing spastic paralysis. They are also useful as central muscle relaxants for ameliorating myotonia.
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.
Bicyclic (alkyl)(amino)carbene (BICAAC) in a dual role: activation of primary amides and CO<sub>2</sub>towards catalytic<i>N</i>-methylation
作者:Nimisha Gautam、Ratan Logdi、Sreejyothi P.、Antara Roy、Ashwani K. Tiwari、Swadhin K. Mandal
DOI:10.1039/d3sc01216f
日期:——
Herein, we report the first catalytic methylation of primary amides using CO2 as a C1 source. A bicyclic (alkyl)(amino)carbene (BICAAC) exhibits dual role by activating both primary amide and CO2 to carry out this catalytic transformation which enables the formation of a new C–N bond in the presence of pinacolborane. This protocol was applicable to a wide range of substrate scopes, including aromatic
在此,我们报告了使用 CO 2作为 C1 源的伯酰胺的首次催化甲基化。双环(烷基)(氨基)卡宾 (BICAAC) 通过激活伯酰胺和 CO 2来进行这种催化转化,从而在频哪醇硼烷存在下形成新的 C-N 键,从而发挥双重作用。该协议适用于范围广泛的底物范围,包括芳香族、杂芳族和脂肪族酰胺。我们成功地将此程序用于药物和生物活性分子的多样化。此外,还探索了使用13 CO 2进行同位素标记的该方法对于一些生物学上重要的分子。在光谱研究和 DFT 计算的帮助下对该机制进行了详细研究。
FUSED PYRIDINE DERIVATIVES
申请人:Eisai Co., Ltd.
公开号:EP1020445A1
公开(公告)日:2000-07-19
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).