NOVEL HETEROCYCLIC COMPOUND OR SALT THEREOF AND INTERMEDIATE THEREOF
申请人:KIYOTO Taro
公开号:US20120226035A1
公开(公告)日:2012-09-06
Disclosed is a compound represented by the general formula:
wherein R
1
represents an aryl or heterocyclic group which may be substituted or the like; X
1
represents a C
2
-C
4
alkylene group or the like; X
2
, X
3
and X
5
independently represent NH, a bond or the like; X
4
represents a lower alkylene group, a bond or the like; Y
1
represents a bivalent alicyclic hydrocarbon residue which may be substituted or a bivalent alicyclic amine residue which may be substituted; and Z
1
, Z
2
, Z
3
, Z
4
, Z
5
and Z
6
independently represent a nitrogen atom, a group represented by the formula: CH, or the like, provided that at least one of Z
3
, Z
4
, Z
5
and Z
6
represents a nitrogen atom, or a salt thereof, which is useful as an antibacterial agent.
This invention provides a process for preparing monoacylpyrazines which involves coreacting an aldehyde (R-CHO) and a pyrazine compound corresponding to the formula:
where R1, R2 and R3 are substituents selected from hydrogen and alkyl groups, and R1 and R when taken together with connecting elements may form an alicyclic or aromatic structure, and R in the aldehyde compound is selected from aliphatic, alicyclic and aromatic groups under free radical conditions in a heterogeneous reaction medium consisting of an organic phase and an aqueous phase. The compounds prepared have the formula:
where R, R', R2 and R3 are as previously defined, which is then recovered.
本发明提供了一种制备单酰基吡嗪的工艺,该工艺包括在由有机相和水相组成的异相反应介质中,在自由基条件下,将醛(R-CHO)和式中所对应的吡嗪化合物进行共反应: 式中 R1、R2 和 R3 是选自氢和烷基的取代基,R1 和 R 与连接元素结合在一起时可形成脂环族或芳香族结构,醛化合物中的 R 选自脂肪族、脂环族和芳香族基团。 所制备的化合物具有式: 式中 R、R'、R2 和 R3 如前定义,然后将其回收。
US4481957A
申请人:——
公开号:US4481957A
公开(公告)日:1984-11-13
US8367831B2
申请人:——
公开号:US8367831B2
公开(公告)日:2013-02-05
Houminer, Y.; Southwick, E. W.; Williams, D. L., Journal of Heterocyclic Chemistry, 1986, vol. 23, p. 497 - 500