Synthesis and dual D<sub>2</sub>and 5-HT<sub>1A</sub>receptor binding affinities of 5-piperidinyl and 5-piperazinyl-1<i>H</i>-benzo[d]imidazol-2(3<i>H</i>)-ones
作者:Nisar Ullah
DOI:10.3109/14756366.2013.776556
日期:2014.4.1
piperidinyl-1H-benzo[d]imidazol-2(3H)-one. The reductive amination of the latter with appropriate biarylaldehdyes rendered the synthesis of 5-piperidinyl-1H-benzo[d]imidazol-2(3H)-ones. Likewise, the Buchwald-Hartwig coupling reactions of 1-boc-piperazine with appropriate aryl halide and subsequent removal of the boc group rendered arylpiperazine. The reductive amination of the latter with appropriate
合成了一系列新的5-哌啶基和5-哌嗪基-1H-苯并[d]咪唑-2(3H)-并评估了D2和5-HT1A受体的双重亲和力。合成的配体在结构上与潜在的非典型抗精神病药双吡非诺有关,具有强效的D2受体拮抗剂和5-HT1A受体激动剂特性。环状硼酸乙烯基酯与适当的芳基卤化物的Suzuki-Miyaura反应产生芳基哌啶,其最终转化为哌啶基-1H-苯并[d]咪唑-2(3H)-。后者用适当的联芳基醛还原胺的还原胺化反应合成了5-哌啶基-1H-苯并[d]咪唑-2(3H)-一。同样,1-boc-哌嗪与适当的芳基卤化物的布赫瓦尔德-哈特维格偶合反应以及随后的boc基团的去除也给出了芳基哌嗪。后者用适当的联芳基醛还原胺的还原胺化作用完成了5-哌嗪基-1H-苯并[d]咪唑-2(3H)-的合成。结构活性关系研究表明,环戊烯基吡啶和环戊烯基苄基对这些化合物的双重D2和5-HT1A受体结合亲和力有显着贡献。