Utilization of 1,3-Dioxolanes in the Synthesis of α-branched Alkyl and Aryl 9-[2-(Phosphonomethoxy)Ethyl]Purines and Study of the Influence of α-branched Substitution for Potential Biological Activity
作者:Karel Pomeisl、Radek Pohl、Robert Snoeck、Graciela Andrei、Marcela Krečmerová
DOI:10.1080/15257770.2018.1506884
日期:2019.2
Attachment of purine bases to dialkyl [(2-hydroxyethoxy)methyl]phosphonates was performed by Mitsunobu reaction. Final α-branched 9-[2-(phosphonomethoxy)ethyl]purines were tested for antiviral, cytostatic and antiparasitic activity, the latter one determined as inhibitory activity towards Plasmodium falciparum enzyme hypoxanthine-guanine-xanthine phosphoribosyltransfesase. In most cases biological activity
摘要:研究了由取代的1,3-二氧戊环合成α-支链烷基和芳基取代的9- [2-(膦酰基甲氧基)乙基]嘌呤的方法。通过路易斯酸介导的1,3-二氧戊环的裂解,然后与亚磷酸二烷基酯或亚磷酸三烷基酯反应,制备关键的合成前体α-取代的[(2-羟基乙氧基)甲基]二烷基膦酸酯。在使用四氯化锡作为路易斯酸和亚磷酸三异丙酯的条件下,可获得最佳的制备产率。嘌呤碱与[(2-羟基乙氧基)甲基]膦酸二烷基酯的连接通过Mitsunobu反应进行。测试了最终的α支化9- [2-(膦酰基甲氧基)乙基]嘌呤的抗病毒,抑制细胞生长活性和抗寄生虫活性,后者被确定为对恶性疟原虫酶次黄嘌呤-鸟嘌呤-黄嘌呤磷酸核糖基转移酶的抑制活性。在大多数情况下,生物学活性只是微不足道的。