O-tetrahydropyranyl-N2-benzoylguanosine smoothly reacts with 4-chlorophenyl 5-chloro-8-quinolyl hydrogen phosphate in the presence of 8-quinolinesulfonyltetrazolide (QS-te) to give 5′-O-dimethoxytrityl-2′-O-tetrahydropyranyl-N2-benzoylguanosine 3′-(4-chlorophenyl, 5-chloro-8-quinolyl) phosphate in high yield without a side product such as O6-phosphorylated guanosine.
5'-O-二甲氧基三苯甲基-2'-O-
四氢吡喃基-N2-苯甲酰基
鸟苷在8-
喹啉磺酰
四唑(QS-te)存在下与4-
氯苯基5-
氯-8-
喹啉磷酸氢盐顺利反应生成5'-O -二甲氧基三苯甲基-2'-O-
四氢吡喃基-N2-苯甲酰基
鸟苷3'-(4-
氯苯基,5-
氯-8-
喹啉基)
磷酸酯,收率高,没有副产物如O6-
磷酸化
鸟苷。