2'-Fluorinated isonucleosides. 1. Synthesis and biological activity of some methyl 2'-deoxy-2'-fluoro-2'-pyrimidinyl-D-arabinopyranosides
作者:M. Bobek、S. H. An、D. Skrincosky、E. De Clercq、R. J. Bernacki
DOI:10.1021/jm00124a013
日期:1989.4
New reactions of methyl 2,2-difluoro glycosides are described that were utilized for synthesis of some novel nucleoside derivatives. Thus, treatment of methyl 2-deoxy-2,2-difluoro-3,4-O-isopropylidene-alpha (beta)-D-erythro-pyranoside (2) with anhydrous HCl resulted in selective displacement of one fluorine atom with chlorine to give a 2-deoxy-2-chloro-2-fluoro glycoside 3. Reaction of 3 with silylated
描述了甲基2,2-二氟糖苷的新反应,其用于合成一些新的核苷衍生物。因此,用无水HCl处理甲基2-脱氧-2,2-二氟-3,4-O-异亚丙基-α-D-赤型吡喃糖苷(2)导致一个氟原子被氯选择性置换为氯。得到2-脱氧-2-氯-2-氟糖苷3。3与SnCl4存在下的甲硅烷基化尿嘧啶反应,得到2-脱氧-2-氟-2-尿嘧啶取代的糖苷4。2-氟2-类似地,通过酰化的2,2-二氟或2-氟-2-溴衍生物(分别为5和6)与甲硅烷基化的嘧啶的反应来制备在C-2处被其他嘧啶取代的β-脱氧糖苷。评价所得的2'-氟化异核苷的抗肿瘤和抗病毒活性。化合物7a,b,8a,b和10a,b显示在10(-4)-10(-5)M时体外抑制肿瘤细胞生长(IC50)50%。在相似浓度下,体外未观察到抗病毒活性。在患有L1210白血病的DBA / 2小鼠中,用7a,b和8a,b获得治疗活性。每天连续5天每天以500 mg / kg的剂量施用