serotonin and serotonin3 (5-HT3) antagonists using a two-dimensional grid template composed of regular hexagons, we deduced structural modification patterns from agonists to antagonists, and designed new 5-HT3 antagonist prototypes. Among them, 2-(4-methyl-1-piperazinyl)-1-butylbenzimidazole (6) was identified as a lead compound which has potent 5-HT3 antagonistic activity comparable to that of granisetron
[EN] NOVEL PIPERAZINYL-PYRAZINONE DERIVATIVES FOR THE TREATMENT OF 5-HT2A RECEPTOR-RELATED DISORDERS<br/>[FR] NOUVEAUX DERIVES DE PIPERAZINYL-PYRAZINONE POUR LE TRAITEMENT DES TROUBLES LIES AU RECEPTEUR 5-HT2A
申请人:BIOVITRUM AB
公开号:WO2004009586A1
公开(公告)日:2004-01-29
Compounds of the general formula (I): (I)wherein m, n, R1, R2, R3 and R4 are as described in the specification. Further included are pharmaceutical compositions comprising the compounds, processes for their preparation, as well as the use of the compounds for the preparation of a medicament for the treatment of 5-HT2A receptor-related disorders or medical conditions.
Electrochemical Dehydrogenative Cross-Coupling of Quinoxalin-2(1<i>H</i>
)-ones with Amines for the Synthesis of 3-Aminoquinoxalinones
作者:Ke-Jing Li、Kun Xu、Yong-Guo Liu、Cheng-Chu Zeng、Bao-Guo Sun
DOI:10.1002/adsc.201800989
日期:2019.3.5
An efficient protocol for the synthesis of 3‐aminoquinoxalinones via the electrochemical dehydrogenative C‐3 amination of quinoxalin‐2(1H)‐ones was developed. With aliphatic amines and azoles as the nitrogen sources, a series of 3‐aminoquinoxalinones was obtained in up to 99% yield. This direct electrolytic method avoids the use of transition metals and external oxidants, and represents an appealing
Compounds of the general formula (I):
1
wherein m, n, R
1
, R
2
, R
3
and R
4
are as described in the specification.
Further included are pharmaceutical compositions comprising the compounds, processes for their preparation, as well as the use of the compounds for the preparation of a medicament for the treatment of 5-HT
2A
receptor-related disorders or medical conditions.
Piperazinylquinoxalines with central serotoninmimetic activity
作者:William C. Lumma、Richard D. Hartman、Walfred S. Saari、Edward L. Engelhardt、Victor J. Lotti、Clement A. Stone
DOI:10.1021/jm00133a019
日期:1981.1
Regioselective syntheses of substituted 2-chloroquinoxalines and derived 2-(1-piperazinyl)quinoxalines are described. Selectivity in regards to serotonin reuptake blocking and serotoninmimetic activities of the piperazinylquinoxalines is reported. In general, introduction of a 6-substituent into the piperazinylquinoxaline enhanced serotonin reuptake blocking activity and diminished serotoninmimetic activity. Unsubstituted and 3-hydroxypiperazinylquinoxalines had primarily serotoninmimetic activity.