A convenient synthesis of racemic 2′-deoxy carbocyclic thymidines lacking the 5′-methylene group
作者:Jinglan Zhou、Philip B. Shevlin
DOI:10.1016/s0040-4039(98)01929-7
日期:1998.11
A convenient synthesis of racemic 2′-deoxy carbocyclic thymidines lacking the 5′-methylene group is reported. Thus, appropriately protected nucleic acid bases are coupled to 3-cyclopentenol, 1, via the Mitsunobu reaction. Epoxidation of the protected thymine substituted cyclopentene gives the corresponding syn and anti-epoxides in a 4:1 ratio. Ring opening of the syn-epoxide by a variety of nucleophiles
报道了缺少5'-亚甲基的外消旋2'-脱氧碳环胸苷的方便合成。因此,通过Mitsunobu反应将适当保护的核酸碱基与3-环戊烯醇1偶联。被保护的胸腺嘧啶取代的环戊烯的环氧化以4:1的比例得到相应的顺式和反式环氧化物。多种亲核试剂使顺环氧化物开环导致缺少5'-亚甲基的外消旋2'-脱氧碳环胸苷。