Synthesis and Antiviral Activity of Pyranosylphosphonic Acid Nucleotide Analogues
作者:Petr Alexander、V. V. Krishnamurthy、Ernest J. Prisbe
DOI:10.1021/jm950788+
日期:1996.3.15
analogues have been designed so that the intramolecular base to phosphorus distance closely approximates that of natural nucleotides. This was achieved by attaching the phosphorus directly at the anomeric position and the base at the 4-position of the carbohydrate. A series of compounds incorporating natural bases and having this novel structure were made via a short synthesis starting from commercially
设计了吡喃糖基核苷酸类似物,使得分子内碱基到磷的距离非常接近天然核苷酸的距离。这是通过将磷直接连接在碳水化合物的异头异构体位置和碱在4位上实现的。由市售的糖类通过短合成合成了一系列掺入天然碱并具有这种新颖结构的化合物。将亚磷酸三异丙酯加到该糖上得到α-和β-2-烯吡喃糖基膦酸酯,然后使用Mitsunobu化学将其用杂环取代。脱保护得到2',3'-不饱和异核苷酸类似物。在某些情况下,脱保护序列诱导双键迁移,导致1',2'-不饱和衍生物。NMR光谱结构分析确定了对碱基的轴向偏爱和对β-磷的赤道偏爱,这导致分子内碱基到磷的距离在天然核苷酸的1 A之内。筛选所有脱保护的化合物对HCMV,HSV-2和HIV复制的抑制作用。几种化合物抑制HCMV和HSV-2,其中最有效的是不饱和胞嘧啶类似物18(HCMV IC50 = 10 microM,HSV-2 IC50 = 85 microM)。在测试的最高剂量(1