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Benzoxaborole Antimalarial Agents. Part 5. Lead Optimization of Novel Amide Pyrazinyloxy Benzoxaboroles and Identification of a Preclinical Candidate
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2017-06-29 00:00:00 , DOI: 10.1021/acs.jmedchem.7b00621 Yong-Kang Zhang 1 , Jacob J. Plattner 1 , Eric E. Easom 1 , Robert T. Jacobs 1 , Denghui Guo 2 , Yvonne R. Freund 1 , Pamela Berry 1 , Vic Ciaravino 1 , John C. L. Erve 1 , Philip J. Rosenthal 2 , Brice Campo 3 , Francisco-Javier Gamo 4 , Laura M. Sanz 4 , Jianxin Cao 5
Journal of Medicinal Chemistry ( IF 6.8 ) Pub Date : 2017-06-29 00:00:00 , DOI: 10.1021/acs.jmedchem.7b00621 Yong-Kang Zhang 1 , Jacob J. Plattner 1 , Eric E. Easom 1 , Robert T. Jacobs 1 , Denghui Guo 2 , Yvonne R. Freund 1 , Pamela Berry 1 , Vic Ciaravino 1 , John C. L. Erve 1 , Philip J. Rosenthal 2 , Brice Campo 3 , Francisco-Javier Gamo 4 , Laura M. Sanz 4 , Jianxin Cao 5
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Carboxamide pyrazinyloxy benzoxaboroles were investigated with the goal to identify a molecule with satisfactory antimalarial activity, physicochemical properties, pharmacokinetic profile, in vivo efficacy, and safety profile. This optimization effort discovered 46, which met our target candidate profile. Compound 46 had excellent activity against cultured Plasmodium falciparum, and in vivo against P. falciparum and P. berghei in infected mice. It exhibited good PK properties in mice, rats, and dogs. It was highly active against the other 11 P. falciparum strains, which are mostly resistant to chloroquine and pyrimethamine. The rapid parasite in vitro reduction and in vivo parasite clearance profile of 46 were similar to those of artemisinin and chloroquine, two rapid-acting antimalarials. It was nongenotoxic in an Ames assay, an in vitro micronucleus assay, and an in vivo rat micronucleus assay when dosed orally up to 2000 mg/kg. The combined properties of this novel benzoxaborole support its progression to preclinical development.
中文翻译：
苯并氧杂硼杂环戊烷抗疟剂。第5部分。新型酰胺吡唑基氧基苯并恶唑的前导物优化和临床前候选物的鉴定
为了确定具有令人满意的抗疟活性，理化性质，药代动力学特征，体内功效和安全性特征的分子，对羧酰胺基吡嗪酰氧基苯并氧杂硼酸酯进行了研究。这项优化工作发现了46个，满足了我们的目标候选人档案。化合物46对培养的恶性疟原虫具有优异的活性，并且在感染的小鼠体内对恶性疟原虫和伯氏疟原虫具有体内活性。它在小鼠，大鼠和狗中表现出良好的PK特性。它对其他11种恶性疟原虫非常活跃菌株，大多数对氯喹和乙胺嘧啶有抗性。46种体外快速寄生虫减少和体内寄生虫清除率特征与青蒿素和氯喹（两种速效抗疟药）相似。当口服剂量高达2000 mg / kg时，在Ames分析，体外微核分析和体内大鼠微核分析中均无遗传毒性。这种新颖的苯并氧杂硼酸酯的综合性能支持其向临床前发展的进程。
更新日期：2017-06-29
中文翻译：
苯并氧杂硼杂环戊烷抗疟剂。第5部分。新型酰胺吡唑基氧基苯并恶唑的前导物优化和临床前候选物的鉴定
为了确定具有令人满意的抗疟活性，理化性质，药代动力学特征，体内功效和安全性特征的分子，对羧酰胺基吡嗪酰氧基苯并氧杂硼酸酯进行了研究。这项优化工作发现了46个，满足了我们的目标候选人档案。化合物46对培养的恶性疟原虫具有优异的活性，并且在感染的小鼠体内对恶性疟原虫和伯氏疟原虫具有体内活性。它在小鼠，大鼠和狗中表现出良好的PK特性。它对其他11种恶性疟原虫非常活跃菌株，大多数对氯喹和乙胺嘧啶有抗性。46种体外快速寄生虫减少和体内寄生虫清除率特征与青蒿素和氯喹（两种速效抗疟药）相似。当口服剂量高达2000 mg / kg时，在Ames分析，体外微核分析和体内大鼠微核分析中均无遗传毒性。这种新颖的苯并氧杂硼酸酯的综合性能支持其向临床前发展的进程。
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