Glycosylations of Inosine and Uridine Nucleoside Bases and Synthesis of the New 1-(β-D-Glucopyranosyl)-Inosine-5′, 6″-diphosphate
作者:Antonia De Capua、Lorenzo De Napoli、Giovanni Di Fabio、Anna Messere、Daniela Montesarchio、Gennaro Piccialli
DOI:10.1080/15257770008033052
日期:2000.8
were investigated, obtaining only adducts with beta-configuration at the new glycosidic carbon; stereospecific insertion of a sugar moiety at the 1-N of inosine was achieved either using a Mitsunobu approach (for ribosylation) or by direct coupling of 1-alpha-bromoglucose 13 with 2',3',5'-tri-O-acetylinosine for glucosylation. 1-(beta-D-glucosyl)-inosine, chosen as starting substrate for glucosylated
研究了糖保护的肌苷和尿苷碱基的糖基和核糖基化,仅在新的糖苷碳上获得了具有β-构型的加合物。使用Mitsunobu方法(用于核糖基化)或通过将1-alpha-溴葡萄糖13与2',3',5'-tri-O-乙酰基肌苷直接偶联来实现在肌苷的1-N处糖部分的立体定向插入用于糖基化。1-(β-D-葡萄糖基)-肌苷,被选作环状IDP-核糖的糖基化类似物的起始底物,在伯羟基处被磷酸化,并在分子内焦磷酸盐键的形成中进行测试。