作者:Heike F. Schaller、Uli Schmidhammer、Eberhard Riedle、Herbert Mayr
DOI:10.1002/chem.200800314
日期:2008.4.28
Urea derivatives as calcium channel blockers
申请人:Pajouhesh Hassan
公开号:US20060063775A1
公开(公告)日:2006-03-23
Urea derivatives which comprise piperidine or piperazine rings and further substitution are effective in ameliorating conditions characterized by unwanted calcium ion channel activity.
含有哌啶或哌嗪环及其进一步取代的尿素衍生物,在改善由不良钙离子通道活性所表征的状况方面效果显著。
(Partial) agonist/antagonist properties of novel diarylalkyl carbamates on histamine H 3 receptors
in a two-step reaction sequence from corresponding ketones. Some of the title compounds showed (partial) agonist activity at the histamine H3 receptor in vitro and in vivo. Diphenylmethyl carbamate 2 was identified as a new lead structure (ED50 = 5.3 +/- 2.6 mg/kg po, alpha = 1.0). Aromatic substitution in ortho- or para-positions of 2 led to a loss of agonist activity. meta-Substitution was tolerated
在寻找组胺H 3受体的新配体时,合成了新的氨基甲酸二芳基烷基酯(1-19)作为3-(1H-咪唑-4-基)丙醇和-乙醇的衍生物。氨基甲酸酯是通过异氰酸酯通过与双光气反应从相应的胺或从相关的羧酸/二苯基磷酰基叠氮化物和醇组分中生成的。由两步反应,由相应的酮制备受阻胺。在体外和体内,一些标题化合物对组胺H3受体显示(部分)激动剂活性。氨基甲酸二苯甲基酯2被鉴定为新的铅结构(ED50 = 5.3 +/- 2.6 mg / kg po,alpha = 1.0)。2的邻位或对位的芳香取代导致激动剂活性降低。元替代在一定程度上是可以容忍的。这些作用似乎是由取代基的空间特性而非电子特性引起的。对杂环中一个或两个苯基环被杂环交换的研究导致了高活性和选择性的噻吩衍生物18(ED50 3.4 +/- 1.4 mg / kg po,α= 1.0)。组胺H3受体的这些新的(部分)激动剂可以用作研究H3受体的分子方面