5′-dimethoxytritylthymidyl-(3′–5′)methylphosphono-5′-thio-3′-acetylthymidine were prepared by the stereospecific reaction of 5′-deoxy-5′-iodo-3′-acetylthymidine with the (Sp)- or (Rp)- diastereomers of 5′-dimethoxytritylthymidyl-3′methylphosphonothioate (Li+ salt) in DMF. At 50°C, the coupling reaction was complete within 6 hours.
通过5'-脱氧-5'-的立体定向反应制备5'-二甲氧基三苯
甲基嘧啶基-(3'-5')
甲基膦酰基-5'-
硫代-3'-乙酰
胸苷的(Sp)-和(Rp)-非对映异构体。
碘3'-乙酰
胸苷与
DMF中5'-二甲氧基三苯
甲基嘧啶-3'甲基
硫代磷酸酯(Li +盐)的(Sp)-或(Rp)-非对映异构体。在50℃下,偶联反应在6小时内完成。