Unsaturated dideoxy fluoro-ketopyranosyl nucleosides as new cytostatic agents: A convenient synthesis of 2,6-dideoxy-3-fluoro-4-keto-β-d-glucopyranosyl analogues of uracil, 5-fluorouracil, thymine, N4-benzoyl cytosine and N6-benzoyl adenine
作者:Stella Manta、Niki Tzioumaki、Evangelia Tsoukala、Aggeliki Panagiotopoulou、Maria Pelecanou、Jan Balzarini、Dimitri Komiotis
DOI:10.1016/j.ejmech.2009.06.013
日期:2009.11
acetylated dideoxy analogues of uracil (8a), 5-fluorouracil (8b), thymine (8c), N4-benzoyl cytosine (8d) and N6-benzoyl adenine (8e), respectively. Finally, direct oxidation of the free hydroxyl group at the 4′-position of 8a–e, and simultaneous elimination reaction of the β-acetoxyl group, afforded the desired unsaturated 2,6-dideoxy-3-fluoro-4-keto-β-d-glucopyranosyl derivatives 9a–e. The new analogues were
通过过乙酰化的3-脱氧的缩合反应合成了尿嘧啶(2a),5-氟尿嘧啶(2b),胸腺嘧啶(2c),N 4-苯甲酰基胞嘧啶(2d)和N 6-苯甲酰基腺嘌呤(2e)的β-保护核苷。-3-氟- d -glucopyranose(1)与相应的甲硅烷基化碱基。核苷被脱乙酰基化,随后的几个保护和脱保护步骤提供了部分乙酰化的类似物6a - e。选择性碘化然后氢化得到尿嘧啶的乙酰化双脱氧类似物(8a),5-氟尿嘧啶(8b),胸腺嘧啶(8c),N 4-苯甲酰基胞嘧啶(8d)和N 6-苯甲酰基腺嘌呤(8e)。最后,在8a - e的4'位置上直接氧化游离羟基,同时消除β-乙酰氧基的反应,得到所需的不饱和2,6-二脱氧-3-氟-4-酮-β - d吡喃葡萄糖基衍生物9A - ë。评价了新的类似物的抗病毒和细胞抑制活性。化合物9a – e在亚毒性浓度下对广泛的DNA和RNA病毒没有活性。然而,它们对多种肿瘤细胞系具有明显