PROBLEM TO BE SOLVED: To provide prodrugs of stereodefined oligonucleotides to impart additional stability to oligonucleotide molecules in many in-vitro and in-vivo applications.SOLUTION: A nucleic acid prodrug has a structure represented by the formula (1), where each instance of Ba is independently a blocked or unblocked adenine, cytosine, guanine, thymine, uracil or modified nucleobase.
问题要解决的是:提供立体定义寡核苷酸的前药,以在许多体外和体内应用中赋予寡核苷酸分子额外的稳定性。解决方案:核酸前药具有由公式(1)表示的结构,其中每个Ba的实例独立地是阻断或未阻断的
腺嘌呤、
胞嘧啶、
鸟嘌呤、胸腺
嘧啶、尿
嘧啶或修饰的核碱基。