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首页> 外文期刊>Journal of Medicinal Chemistry >Cardioselective K(ATP) channel blockers derived from a new series of m-anisamidoethylbenzenesulfonylthioureas.
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Cardioselective K(ATP) channel blockers derived from a new series of m-anisamidoethylbenzenesulfonylthioureas.

机译：心脏选择性K（ATP）通道阻滞剂衍生自一系列新的间苯二甲酰基乙基苯磺酰基硫脲。

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摘要

Sulfonylthioureas exhibiting cardioselective blockade of ATP-sensitive potassium channels (K(ATP) channels) were discovered by stepwise structural variations of the antidiabetic sulfonylurea glibenclamide. As screening assays, reversal of rilmakalim-induced shortening of the cardiac action potential in guinea pig papillary muscles was used to probe for activity on cardiac K(ATP) channels as the target, and membrane depolarization in CHO cells stably transfected with hSUR1/hKir6.2 was used to probe for unwanted side effects on pancreatic K(ATP) channels. Changing glibenclamide's para-arrangement of substituents in the central aromatic ring to a meta-pattern associated with size reduction of the substituent at the terminal nitrogen atom of the sulfonylurea moiety was found to achieve cardioselectivity. An additional change from a sulfonylurea moiety to a sulfonylthiourea moiety along with an appropriate substituent in the ortho-position of the central aromatic system was a successful strategy to further improve potency on the cardiac K(ATP) channel. Among this series of sulfonylthioureas HMR1883, 1-[5-[2-(5-chloro-o-anisamido)ethyl]-2-methoxyphenyl]sulfonyl-3-methylthiourea, and its sodium salt HMR1098 were selected for development and represent a completely new therapeutic approach toward the prevention of life-threatening arrhythmias and sudden cardiac death in patients with coronary heart disease.
机译：磺酰硫脲显示出对ATP敏感的钾通道（K（ATP）通道）的心脏选择性阻滞是通过逐步降糖的磺酰脲类格列本脲的结构变化发现的。作为筛选测定，逆转了利马卡林诱导的豚鼠乳头肌心脏动作电位的缩短，以探测以心脏K（ATP）通道为靶标的活性，并稳定地转染了hSUR1 / hKir6的CHO细胞的膜去极化作用。 2被用来探测对胰腺K（ATP）通道的有害副作用。发现将中心芳香环中的格列本脲的取代基的对位排列改变为与磺酰脲部分的末端氮原子上的取代基的尺寸减小相关的间位图案，从而实现了心脏选择性。从磺酰脲部分到磺酰硫脲部分的额外变化以及中央芳族系统邻位的适当取代基是进一步提高心脏K（ATP）通道效能的成功策略。在该系列磺酰硫脲HMR1883中，选择了[[1- [5- [2-（5-氯-邻-氨基-氨基）乙基] -2-甲氧基苯基]磺酰基-3-甲基硫脲]及其钠盐HMR1098进行开发并完全代表预防冠心病患者危及生命的心律不齐和心源性猝死的新治疗方法。

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