A process for preparing 2',3'-dideoxyadenosine of the formula ##STR1## wherein B is adenine, wherein R.sup.1 is hydrogen, C.sub.1-12 acyl, C.sub.1-12 alkyl, C.sub.7-8 aralkyl, or silyl, said process comprising: reducing a nucleoside of the formula IIIa or IIIb ##STR2## wherein R.sup.2 is hydrogen, C.sub.1-12 acyl, C.sub.1-12 alkyl, C.sub.7-8 aralkyl or silyl; X is Cl, Br or I; R.sup.5 is C.sub.1-12 acyl and B is adenine, with hydrogen in the presence of a palladium catalyst and aqueous solvent mixture of acetonitrile or ethyl acetate and water, said aqueous solvent containing a base selected from the group consisting of sodium hydroxide/sodium acetate and sodium carbonate/sodium acetate, wherein said solvent has a pH of 9-11.
一种制备2',3'-二脱氧
腺苷的方法,其中B是
腺嘌呤,其中R^1是氢,C1-12酰基,C1-12烷基,C7-8芳基烷基或
硅基,所述方法包括:在存在
钯催化剂和
乙腈或
乙酸乙酯和
水的
水溶性溶剂混合物中,用氢还原具有以下结构的核苷 IIIa 或 IIIb,其中R^2是氢,C1-12酰基,C1-12烷基,C7-8芳基烷基或
硅基;X是Cl,Br或I;R^5是C1-12酰基,B是
腺嘌呤,所述溶剂含有从羟氧化
钠/
乙酸钠和
碳酸钠/
乙酸钠组成的碱,其中所述溶剂的pH为9-11。