申请人:King Fahd University of Petroleum and Minerals
公开号:US08901304B1
公开(公告)日:2014-12-02
The benzo[d]imidazole derivatives of piperidine and piperazine are 5-piperazinyl and 5-piperadinyl-1H-benzo[d]imidazol-2(3H)-ones that exhibit D2 and 5-HT1A receptor binding affinities, making them suitable for use as the active ingredient of pharmaceuticals for the treatment of schizophrenia. The derivatives have the general formula:
where X is carbon or nitrogen and R is a selected biaryl group, or a pharmaceutically acceptable salt thereof. The piperidinyl compounds are prepared by removal of the Boc group from tert-Butyl-4-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-5-yl)piperidine-1-carboxylate. Subsequent reductive amination with a selected biarylaldehyde completes the synthesis of the 5-piperazinyl-1H-benzo[d]imidazol-2(3H)-ones. The piperazinyl compounds are prepared by preparation of the intermediate tert-Butyl 4-(3,4-diaminophenyl)piperazine-1-carboxylate. Removal of the Boc group and subsequent reductive amination with a selected biarylaldehyde completes the synthesis of the 5-piperazinyl-1H-benzo[d]imidazol-2(3H)-ones.
苯并[d]咪唑衍生物的哌啶和哌嗪是5-哌嗪基和5-哌啶基-1H-苯并[d]咪唑-2(3H)-酮,具有D2和5-HT1A受体结合亲和力,适用于作为治疗精神分裂症的药物的活性成分。该衍生物具有以下通式:
其中X是碳或氮,R是选择的双芳基基团或其药学上可接受的盐。哌啶基化合物通过从叔丁基-4-(2-氧代-2,3-二氢-1H-苯并[d]咪唑-5-基)哌啶-1-羧酸酯中去除Boc基团制备而成。随后,与选择的双芳基醛进行还原胺化反应,完成了5-哌嗪基-1H-苯并[d]咪唑-2(3H)-酮的合成。哌嗪基化合物通过制备中间体叔丁基4-(3,4-二氨基苯基)哌嗪-1-羧酸酯而制备而成。去除Boc基团并随后与选择的双芳基醛进行还原胺化反应,完成了5-哌嗪基-1H-苯并[d]咪唑-2(3H)-酮的合成。