Nucleic acid related compounds. 40. Synthesis and biological activities of 5-alkynyluracil nucleosides
作者:Erik De Clercq、Johan Descamps、Jan Balzarini、Jerzy Giziewicz、Philip J. Barr、Morris J. Robins
DOI:10.1021/jm00359a008
日期:1983.5
5-alkynyl-2'-deoxyuridine nucleosides. The 5-ethynyl, followed by 5-propynyl, products had the highest antiviral potency, with the 2'-deoxy derivatives being more effective than the arabinosyl compounds. Activity was weak at hexynyl and disappeared at heptynyl. Inclusion of an omega-hydroxy function diminished the antiviral effect. None of the 5-alkynyluracil nucleosides tested had sufficient selectivity
末端炔与5-碘-1-(2,3,5-三-Op-甲苯基-β-D-阿拉伯呋喃糖基)尿嘧啶和5-碘-3',5'-二-Op-甲苯基-2'的偶联-脱氧尿苷在三乙胺中易于催化量的双(三苯基膦)-钯(II)氯化物和碘化铜(I)进行。使所得产物脱保护,得到5-炔基-1-β-D-阿拉伯呋喃糖基尿嘧啶和5-炔基-2'-脱氧尿苷核苷。5-乙炔基,其次是5-丙炔基,产品具有最高的抗病毒效力,其中2'-脱氧衍生物比阿拉伯糖基化合物更有效。活性在己炔基处弱,而在庚炔基处消失。包含ω-羟基功能减弱了抗病毒作用。测试的5-炔基尿嘧啶核苷均没有足够的选择性足以胜任候选抗病毒药。