摘要:
                                几种经修饰和在5'-位链延伸的核苷已合成如下:N6-苯甲酰胺基-9-(2,3-二-O-苯甲酰基-β-D-阿拉伯糖基戊二醛-1,4-呋喃糖基)腺嘌呤,O = CHR,a导致(E)-EtOCOCH = CHR(2)b导致EtOCOCH2CH2R(3)c导致H2NCOCH2CH2R(6)d导致1-(腺嘌呤-9-基)-1,5,6 -三甲氧基-β-D-阿拉伯糖-庚-1,4-呋喃呋喃酰胺(8); 3 e导致生成1-(腺嘌呤-9-基)-1,5,6-三苯氧基-β-D-阿拉伯糖基庚烷-1,4-呋喃呋酸酯(5)f导致生成1-(腺嘌呤-9-基) )-1,5,5,6-苯氧基-β-D-阿拉伯糖-庚-1,4-呋喃糖醛酸(4); 5g得到9-(5,6-二脱氧-β-D-阿拉伯糖-庚基-1,4-呋喃糖基)腺嘌呤(7)[其中a = EtOCOCH = PPh3; m = 1。b = H2,Pd / C;c = Me2A1NH2;