Synthesis of Ester Prodrugs of 9-(S)-[3-Hydroxy-2-(phosphonomethoxy)propyl]-2,6-diaminopurine (HPMPDAP) as Anti-Poxvirus Agents

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• 作者：Marcela Kremerov ; Antonn Hol ; Graciela Andrei ; Karel Pomeisl ; Tom Tich ; Petra Behov ; Milena Masojdkov ; Martin Dransk ; Radek Pohl ; Genevieve Laflamme ; Lieve Naesens ; Hon Hui ; Tomas Cihlar ; Johan Neyts
• 刊名：Journal of Medicinal Chemistry
• 出版年：2010
• 出版时间：October 14, 2010
• 年：2010
• 卷：53
• 期：19
• 页码：6825-6837
• 全文大小：985K
• 年卷期：v.53,no.19(October 14, 2010)
• ISSN：1520-4804

文摘

9-(S)-[3-Hydroxy-2-(phosphonomethoxy)propyl]-2,6-diaminopurine (HPMPDAP) and its cyclic form were selected for further evaluation as potential drug candidates against poxvirus infections. To increase bioavailability of these compounds, synthesis of their structurally diverse ester prodrugs was carried out: alkoxyalkyl (hexadecyloxypropyl, octadecyloxyethyl, hexadecyloxyethyl), pivaloyloxymethyl (POM), 2,2,2-trifluoroethyl, butylsalicylyl, and prodrugs based on peptidomimetics. Most HPMPDAP prodrugs were synthesized in the form of monoesters as well as the corresponding cyclic phosphonate esters. The activity was evaluated not only against vaccinia virus but also against different herpes viruses. The most potent and active prodrugs against vaccinia virus were the alkoxyalkyl ester derivatives of HPMPDAP, with 50% effective concentrations 400−600-fold lower than those of the parent compound. Prodrugs based on peptidomimetics, the 2,2,2-trifluoroethyl, the POM, and the butylsalicylyl derivatives, were able to inhibit vaccinia virus replication at 50% effective concentrations that were equivalent or 10-fold lower than those observed for the parent compounds.