Structure–Activity Relationships of C6-Uridine Derivatives Targeting Plasmodia Orotidine Monophosphate Decarboxylase

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• 作者：Angelica M. Bello ; Ewa Poduch ; Yan Liu ; Lianhu Wei ; Ian Crandall ; Xiaoyang Wang ; Christopher Dyanand ; Kevin C. Kain ; Emil F. Pai ; Lakshmi P. Kotra
• 刊名：Journal of Medicinal Chemistry
• 出版年：2008
• 出版时间：February 14, 2008
• 年：2008
• 卷：51
• 期：3
• 页码：439 - 448
• 全文大小：1691K
• 年卷期：v.51,no.3(February 14, 2008)
• ISSN：1520-4804

文摘

Malaria, caused by Plasmodia parasites, has re-emerged as a major problem, imposing its fatal effects on human health, especially due to multidrug resistance. In Plasmodia, orotidine 5′-monophosphate decarboxylase (ODCase) is an essential enzyme for the de novo synthesis of uridine 5′-monophosphate. Impairing ODCase in these pathogens is a promising strategy to develop novel classes of therapeutics. Encouraged by our recent discovery that 6-iodo uridine is a potent inhibitor of P. falciparum, we investigated the structure–activity relationships of various C6 derivatives of UMP. 6-Cyano, 6-azido, 6-amino, 6-methyl, 6-N-methylamino, and 6-N,N-dimethylamino derivatives of uridine were evaluated against P. falciparum. The mononucleotides of 6-cyano, 6-azido, 6-amino, and 6-methyl uridine derivatives were studied as inhibitors of plasmodial ODCase. 6-Azidouridine 5′-monophosphate is a potent covalent inhibitor of P. falciparum ODCase. 6-Methyluridine exhibited weak antimalarial activity against P. falciparum 3D7 isolate. 6-N-Methylamino and 6-N,N-dimethylamino uridine derivatives exhibited moderate antimalarial activities.