Synthesis and antiviral activity of certain guanosine analogs in the thiazolo[4,5-d]pyrimidine ring system
作者:Ganesh D. Kini、Jack D. Anderson、Yogesh S. Sanghvi、Arthur F. Lewis、Donald F. Smee、Ganapathi R. Revankar、Roland K. Robins、Howard B. Cottam
DOI:10.1021/jm00114a008
日期:1991.10
Several sugar-modified nucleoside derivatives of the purine analogue 5-amino-3-beta-D-ribofuranosylthiazolo[4,5-d]pyrimidine-2,7-dione (1) were synthesized. Phosphorylation of 1 using POCl3 resulted in 5'-monophosphate 2, which was subsequently converted to 3',5'-cyclic phosphate 3, by reported methods. 5'-Sulfamoyl derivative 4 was synthesized by treatment of the 2,3-O-isopropylidene derivative of
合成了嘌呤类似物5-氨基-3-β-D-呋喃核糖基噻唑并[4,5-d]嘧啶-2,7-二酮(1)的几种糖修饰的核苷衍生物。使用POCl3进行1的磷酸化反应,生成5'-单磷酸2,随后通过报道的方法转化为3',5'-环磷酸3。通过用氯磺酰胺处理1的2,3-O-异亚丙基衍生物,然后进行酸脱保护,来合成5'-氨磺酰基衍生物4。化合物5-7、1的5'-脱氧,三-O-乙酰基和2'-脱氧衍生物分别通过5-氨基噻唑并[4,5-d]嘧啶-2,7的糖基化反应合成-二酮,1的糖苷配基,具有适当的糖部分,采用Vorbruggen程序。C2'-C3'的氧化裂解 在1中结合键,然后用硼氢化钠还原产生“ seco”类似物8。评价了核苷2-8在体内对Semliki森林病毒的抗病毒活性。化合物2、5和7的活性类似于1的活性。环状磷酸酯3在高剂量时有毒,而在低剂量时则弱。化合物4、6和8在该系统中没有活性。