申请人:Schering Aktiengesellschaft
公开号:US03983104A1
公开(公告)日:1976-09-28
Novel N.sup.6 -substituted adenosines and a novel process for the preparation of N.sup.6 -substituted adenosines from 6-trialkylsiloxypurine derivatives. The derivatives are reacted in the presence of a tertiary base or a Lewis acid with ammonia or an amine of the formula HNR.sub.1 R.sub.2, wherein R.sub.1 and R.sub.2 are the same or different represent hydrogen, alkyl of 1-6 carbon atoms, aralkyl or 7 to 10 carbon atoms unsubstituted or substituted with hydroxy or alkoxy with 1-4 carbon atoms, aryl unsubstituted or substituted with hydroxy or alkoxy with 1 to 4 carbon atoms, a heterocyclic ring of 4 to 7 members, containing a total of 1-3 hetero atoms which can be nitrogen, oxygen or sulfur; or when R.sub.1 is hydrogen R.sub.2 is hydroxyl, amino, alkyl of 1-4 carbon atoms substituted in the terminal position with a mono- or dialkylamino group, containing 1-4 carbon atoms in each alkyl group, or mono- or bicyclic heterocyclic group of 5-10 members, containing a total of 1-3 hetero atoms, which can be nitrogen, oxygen and sulfur, or R.sub.1 and R.sub.2, together with the N-atom, collectively represent a heteromonocyclic ring of 4-7 members containing a total of 1-3 hetero atoms which, in addition to the nitrogen atom, can be nitrogen, oxygen or sulfur, unsubstituted or substituted by an alkyl group with 1-4 carbon atoms. The compounds of the invention have valuable biological properties such as cytokinins, etc.
N.sup.6-取代腺苷类新化合物及从6-三烷基硅氧基嘌呤衍生物制备N.sup.6-取代腺苷类化合物的新方法。这些衍生物在三级碱或Lewis酸存在下与氨或HNR.sub.1 R.sub.2(其中R.sub.1和R.sub.2相同或不同,代表氢、1-6碳原子的烷基、7-10碳原子的芳基或未取代或取代的含有氢氧基或1-4碳原子的烷氧基的芳基,未取代或取代的含有氢氧基或1-4碳原子的烷氧基的芳基,含有1-3个杂原子的4-7环的杂环,这些杂原子可以是氮、氧或硫;或者当R.sub.1为氢时,R.sub.2为羟基、氨基、1-4碳原子的末端取代为单烷基氨基团的烷基,每个烷基团中含有1-4碳原子,或含有1-3个杂原子的5-10环的单烷基或双环杂环基,这些杂原子可以是氮、氧和硫,或R.sub.1和R.sub.2与N原子一起共同代表含有1-3个杂原子的4-7环的杂单环环,除氮原子外,这些杂原子可以是氮、氧或硫,未取代或取代为含有1-4碳原子的烷基。该发明的化合物具有诸如细胞激素等有价值的生物学性质。