(1a) was converted by catalytic hydrogentation entirely to the 1,6-dihydro-derivative (3a), whereas 9-methyl-8-trifluoromethypurine (1b) produced a 2 : 1 mixture of the 1,6-(3b) and 7,8-(5) dihydroderivatives. The new hydrogenated purines are characterised by unusual stability. Physical properties are discussed and compared with those of analogues from several other heterocyclic series.
通过催化加氢将8-三
氟甲基
嘌呤(1a)完全转化为1,6-二氢衍
生物(3a),而9-甲基-8-三
氟甲基
嘌呤(1b)则生成了1:6-(3b)的2:1混合物)和7,8-(5)二氢衍
生物。新的氢化
嘌呤具有非同寻常的稳定性。讨论了物理性质,并将其与其他几个
杂环系列的类似物进行了比较。