Synthesis and pharmacological characterization of novel N -( trans -4-(2-(4-(benzo[ d ]isothiazol-3-yl)piperazin-1-yl)ethyl)cyclohexyl)amides as potential multireceptor atypical antipsychotics
作者:Xiao-Wen Chen、Yuan-Yuan Sun、Lei Fu、Jian-Qi Li
DOI:10.1016/j.ejmech.2016.07.038
日期:2016.11
benzisothiazolylpiperazine derivatives combining potent dopamine D2 and D3, and serotonin 5-HT1A and 5-HT2A receptor properties were synthesized and evaluated for their potential antipsychotic properties. The most-promising derivative was 9j. The unique pharmacological features of 9j were a high affinity for D2, D3, 5-HT1A, and 5-HT2A receptors, together with a 20-fold selectivity for the D3 versus D2 subtype, and
An Aryne-Based Route to Substituted Benzoisothiazoles
作者:Yiding Chen、Michael C. Willis
DOI:10.1021/acs.orglett.5b02347
日期:2015.10.2
The combination of arynes, generated using fluoride from the corresponding 2-(trimethylsilyl)aryl triflates, and 3-hydroxy-4-aminothiadiazoles leads to the selective formation of 3-amino-substituted benzo[d]isothiazoles. Variation of the substitution pattern of the aryne precursor, and of the thiadiazole, is possible, with the target heterocycles being obtained in good to excellent yields. In all cases
使用由相应的2-(三甲基甲硅烷基)芳基三氟甲磺酸酯氟化物生成的芳烃与3-羟基-4-氨基噻二唑的组合导致选择性地形成3-氨基取代的苯并[ d ]异噻唑。可以改变芳烃前体和噻二唑的取代方式,并以高至优异的产率获得目标杂环。在所有情况下,使用3-羟基-4-氨基噻二唑都会在产物杂环中引入氨基取代基。
METHOD FOR PRODUCING 3-HALO-1,2-BENZISOTHIAZOLES
申请人:Sakaue Shigeki
公开号:US20130005983A1
公开(公告)日:2013-01-03
A method for producing a 3-halo-1,2-benzisothiazole represented by the general formula (2):
wherein R
1
is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, a nitro group or a halogen atom, and X is a halogen atom, the method characterized by reacting a 1,2-benzisothiazol-3-one represented by the general formula (1):
wherein R
1
is the same group as the R
1
defined in the above general formula (2), with a thionyl halide in a polar solvent. The 3-halo-1,2-benzisothiazole obtainable according to the method of the present invention is suitably used as production raw materials and the like for a medicament and the like.
temperature, ynamides undergo a [5 + 2] annulation reaction with 1,2-benzisothiazoles to afford 1,4-benzothiazepines, whereas under heating conditions a desulfurizative annulation reaction proceeds well to access 3-aminoisoquinolines. These two protocols provide biologically important 1,4-benzothiazepines and 3-aminoisoquinolines with high efficiency with broad substrate scopes under mild reaction conditions
A method for producing a 1,2-benzisothiazole characterized by treating a 2-(alkylthio)benzaldehyde oxime with a halogen compound; a method for producing a 3-halo-1,2-benzisothiazole characterized by treating a 1,2-benzisothiazole with a halogenating agent; and a method for producing a 1-(1,2-benzisothiazol-3-yl)piperazine characterized by reacting the obtained 3-halo-1,2-benzisothiazoles with a piperazine. By the method of the present invention, 1,2-benzisothiazoles and 3-halo-1,2-benzisothiazoles, which are useful as intermediates for pharmaceutical compositions such as psychotropic agents, and 1-(1,2-benzisothiazole-3-yl)piperazines synthesized therefrom can be obtained in a high yield without using expensive starting materials by shorter and simpler process than conventional methods.