Pronounced Inhibition Shift from HIV Reverse Transcriptase to Herpetic DNA Polymerases by Increasing the Flexibility of 伪-Carboxy Nucleoside Phosphonates

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• 作者：Jubi John ; Youngju Kim ; Nicholas Bennett ; Kalyan Das ; Sandra Liekens ; Lieve Naesens ; Eddy Arnold ; Anita R. Maguire ; Matthias G枚tte ; Wim Dehaen ; Jan Balzarini
• 刊名：Journal of Medicinal Chemistry
• 出版年：2015
• 出版时间：October 22, 2015
• 年：2015
• 卷：58
• 期：20
• 页码：8110-8127
• 全文大小：844K
• ISSN：1520-4804

文摘

Alpha-carboxynucleoside phosphonates (伪-CNPs) are novel viral DNA polymerase inhibitors that do not need metabolic conversion for enzyme inhibition. The prototype contains a cyclopentyl linker between nucleobase and 伪-carboxyphosphonate and preferentially (50- to 100-fold) inhibits HIV-1 RT compared with herpetic DNA polymerases. A synthesis methodology involving three steps has been developed for the synthesis of a series of novel 伪-CNPs, including a Rh(II)-catalyzed O鈥揌 insertion that connects the carboxyphosphonate group to a linker moiety and an attachment of a nucleobase to the other end of the linker by a Mitsunobu reaction followed by final deprotection. Replacing the cyclopentyl moiety in the prototype 伪-CNPs by a more flexible entity results in a selectivity shift of 鈭?00-fold in favor of the herpetic DNA polymerases when compared to selectivity for HIV-1 RT. The nature of the kinetic interaction of the acyclic 伪-CNPs against the herpetic DNA polymerases differs from the nature of the nucleobase-specific kinetic interaction of the cyclopentyl 伪-CNPs against HIV RT.