为了设计一种潜在的药物,重要的是要知道它的p K a,因为分子的质子化状态对于配体-受体相互作用和分子的药代动力学至关重要。测量一系列1-(取代的苯基)-4-丙基哌嗪的p K a值,以研究苯环上取代基的存在如何调节N-4氮的碱性。p K a值表明取代基的位置至关重要。通常,在邻位引入取代基苯环的-位增加了分子的碱性。该作用似乎与空间和构象作用有关,与取代基的电子性质无关。另一方面,间位和对位取代的衍生物显示出p K a的轻微降低,其在质量上与取代基的电子性质一致。
1-PHENYLALCOXY-2-BETA-PHENYLETHYL DERIVATIVES AS P-GLYCOPROTEIN (P-GP) INHIBITORS USEFUL IN DRUG RESISTANCE EVENTS
申请人:Berardi Francesco
公开号:US20090093493A1
公开(公告)日:2009-04-09
The invention relates to a new class of compounds, which are 1-phenylalcoxy-2-β-phenylethyl derivatives, as P-glycoprotein (P-GP) inhibitors. These compounds are useful in drug resistance events. They have been shown able to inhibit in a dose-dependent manner Glycoprotein-P (P-gp) activity in cell lines in which the expression of said glycoprotein is very high, like Caco-2 (human colon cancer) cells and MCF7/Adr (adriamycin-resistant human breast carcinoma) cells. The invention also relates to methods of production and the utilization of such compounds as medicaments useful in the treatment of states linked to the difficulty for some drugs to cross the blood-brain barrier (BBB) and generally within the context of the problems of drug resistance induced by chemotherapy agents.
A series of mono-substituted 4-phenylpiperidines and -piperazines have been synthesized and their effects on the dopaminergic system tested in vivo. The structure activity relationship (SAR) revealed that the position and physicochemical character of the aromatic substituent proved to be critical for the levels of 3,4-dihydroxyphenylacetic acid (DOPAC) in the brain of freely moving rats. In order to
已经合成了一系列的单取代的4-苯基哌啶和-哌嗪,并在体内测试了它们对多巴胺能系统的作用。结构活性关系(SAR)表明,芳香取代基的位置和理化特性对自由运动大鼠大脑中3,4-二羟基苯基乙酸(DOPAC)的水平至关重要。为了研究这些化合物的结构特性如何影响响应,使用偏最小二乘(PLS)回归对一组列表化和计算的物理化学描述符针对体内效应进行了建模。此外,与多巴胺D 2(DA D 2确定了所选子集的受体和单胺氧化酶A(MAO A)酶,并使用与体内模型相同的描述语来描述QSAR模型,以研究导致观察到的DOPAC反应的机制。这些模型与纹状体DOPAC的水平与对DA D 2和MAO A的亲和力之间的强相关性相结合,提供了对该类化合物生物学反应的全面理解。
Structure-activity relationship studies of central nervous system (CNS) agents. 5. Effect of the hydrocarbon chain on the affinity of 4-substituted 1-(3-chlorophenyl)piperazines for 5-HT1A receptor sites
作者:Jerzy L. Mokrosz、Marzena Pietrasiewicz、Beata Duszynska、Marek T. Cegla
DOI:10.1021/jm00091a004
日期:1992.6
contribute to their 5-HT1A affinity. The specific binding constant was defined as the receptor affinity of the protonated species of compounds under physiological conditions. The range of Ki(AH+) = 1 - 3 x 10(-11) M is a specific affinity limit of the investigated class of compounds at the 5-HT1A receptor sites.
研究了模型4-取代的1-(3-氯苯基)哌嗪12-31的烃链对其对5-HT1A受体位点的亲和力的影响。发现4-正烷基链的延长强烈增加了所研究化合物的5-HT1A亲和力。正己基衍生物20的亲和力达到最大值(Ki = 2.67nM)。已表明1-芳基哌嗪的N-4取代基的疏水相互作用显着地促进了它们的5-HT1A亲和力。特异性结合常数定义为在生理条件下化合物的质子化物质的受体亲和力。Ki(AH +)的范围为1-3 x 10(-11)M是在5-HT1A受体位点上所研究化合物类别的特定亲和力极限。
INDOLE DERIVATIVES FOR THE TREATMENT OF OSTEOPOROSIS