Pyrazolo[4,3-d]pyrimidine nucleosides. Synthesis and antiviral activity of 1-.beta.-D-ribofuranosyl-3-methyl-6-substituted-7H-pyrazolo[4,3-d]pyrimidin-7-ones
作者:Pier Giovanni Baraldi、Daniele Simoni、Vittorio Periotto、Stefano Manfredini、Mario Guarneri、Roberto Manservigi、Enzo Cassai
DOI:10.1021/jm00374a009
日期:1984.8
N1 analogues of formycin B, with substituents at the 3 and 6 positions of the pyrazolo[4,3-d]pyrimidine moiety were synthesized by the direct SnCl4-catalyzed ribosylation method. The site of the glycosidic linkage and the anomeric configurations were established on the basis of X-ray crystallography, as well as 1H and 13C nuclear magnetic resonance spectroscopy. Preliminary results of the antiviral
通过直接SnCl4催化的核糖基化方法合成了甲霉菌素B的N1类似物,在吡唑并[4,3-d]嘧啶部分的3和6位具有取代基。糖苷键的位置和异头构型是根据X射线晶体学以及1H和13C核磁共振波谱确定的。描述了这些衍生物在体外的抗病毒测试的初步结果。