角噻唑并[5,4- f ]和[4,5- h ]喹唑啉的新型合成,其线性噻唑并[4,5- g ]和[5,4- g ]喹唑啉类似物的制备
摘要:
9-氧代8,9-二氢噻唑[5,4- f ]喹唑啉-2-腈(1)或6-氧代6,7-二氢噻唑[4,5 - h ]喹唑啉-2-腈(2)的合成)进行了重新研究,目的是改变与喹唑啉4-one部分相连的噻唑环的位置,以便合成两个新颖的线性三环式8-氧代-7,8-二氢噻唑并[4,5- g ]喹唑啉- 2-甲腈(3)和8-氧代7,8-二氢噻唑并[5,4 - g ]喹唑啉-2-甲腈(4)。本文描述的途径为获得有效的生物活性杂环化合物文库提供了各种替代和转化途径。
The present invention provides the compounds represented by formula (I):
(I)
or pharmaceutical salts thereof, wherein:
X
1
represents oxygen atoms and the like, X
2
represents nitrogen atoms and the like, X
3
represents nitrogen atoms and the like, X
4
represents nitrogen atoms and the like, R
1
represents formula (II-1):
wherein X
5
represents sulfur atoms and the like, A
1
represents carbon atoms and the like, A
2
represents nitrogen atoms and the like and A ring represents phenyl group and the like, having mGluR1 inhibiting effect, and being usefull for preventing or treating convulsion, acute pain, inflammatory pain, chronic pain, brain disorder such as cerebral infarction or transient ischemick attack, psychotic disorder such as schizophrenia, anxiety, drug dependence, Parkinson's disease, or gastrointestinal disorder.
The present invention provides the compounds represented by formula (I):
or pharmaceutical salts thereof, wherein:
X
1
represents oxygen atoms and the like, X
2
represents nitrogen atoms and the like, X
3
represents nitrogen atoms and the like, X
4
represents nitrogen atoms and the like, R
1
represents formula (II-1):
wherein X
5
represents sulfur atoms and the like, A
1
represents carbon atoms and the like, A
2
represents nitrogen atoms and the like and A ring represents phenyl group and the like,
having mGluR1 inhibiting effect, and being useful for preventing or treating convulsion, acute pain, inflammatory pain, chronic pain, brain disorder such as cerebral infarction or transient ischemick attack, psychotic disorder such as schizophrenia, anxiety, drug dependence, Parkinson's disease, or gastrointestinal disorder.
Compounds and compositions for modulating the activity of p38 kinases are provided, including p38α, and p38β kinase. Methods for treating, preventing or ameliorating one or more symptoms of a p38 kinase mediated disease or disorder are also provided.
The present invention provides the compounds represented by formula (I):
(I)
or pharmaceutical salts thereof, wherein:
X1 represents oxygen atoms and the like, X2 represents nitrogen atoms and the like, X3 represents nitrogen atoms and the like, X4 represents nitrogen atoms and the like, R1 represents formula (II-1):
wherein X5 represents sulfur atoms and the like, A1 represents carbon atoms and the like, A2 represents nitrogen atoms and the like and A ring represents phenyl group and the like,
having mGluR1 inhibiting effect, and being usefull for preventing or treating convulsion, acute pain, inflammatory pain, chronic pain, brain disorder such as cerebral infarction or transient ischemick attack, psychotic disorder such as schizophrenia, anxiety, drug dependence, Parkinson's disease, or gastrointestinal disorder.
Visible light-induced cascade <i>N</i>-alkylation/amidation reaction of quinazolin-4(3<i>H</i>)-ones and related N-heterocycles
作者:Jiexiong Mai、Ziwei Huang、Shaohuan Lv、Quan Chen、Rongrong Chen、Feng Xie、Jun Wang、Bin Li
DOI:10.1039/d2ob02226e
日期:——
An efficient and visible light-promoted cascade N-alkylation/amidation of quinazolin-4(3H)-ones with benzyl halides and allyl halides has been described for the first time to provide a convenient access to quinazoline-2,4(1H,3H)-diones. This cascade N-alkylation/amidation reaction shows good functional group tolerance and could also be applied to N-heterocycles such as benzo[d]thiazoles, benzo[d]imidazoles
首次描述了喹唑啉-4(3 H )-与苄基卤化物和烯丙基卤化物的有效且可见光促进的级联N-烷基化/酰胺化,以提供对喹唑啉-2,4(1 H)的便捷途径,3 H )-二酮。这种级联N-烷基化/酰胺化反应显示出良好的官能团耐受性,也可应用于 N-杂环,如苯并 [ d ] 噻唑、苯并 [ d ] 咪唑和喹唑啉。对照实验表明,K 2 CO 3在这种转化中起着重要作用。