Direct synthesis of 5- and 6-substituted 2-aminopyrimidines as potential non-natural nucleobase analogues
作者:K. Radhakrishnan、Namita Sharma、Lal Mohan Kundu
DOI:10.1039/c4ra00249k
日期:——
A series of 2-aminopyrimidine derivatives, substituted at 5- and 6-positions, were synthesized. The reaction was carried out in a single step by treatment of the corresponding β-ketoester or β-aldehydoester with guanidine hydrochloride in the presence of K2CO3, in a microwave-assisted method without the requirement of solvent. A unique 1 : 1 co-crystal structure was obtained which shows that a 6-p
合成了一系列5-和6-位取代的2-氨基嘧啶衍生物。该反应通过在K 2 CO 3存在下用盐酸胍处理相应的β-酮酸酯或β-醛二酸酯来一步进行。,不需要溶剂的微波辅助方法。获得独特的1:1共晶体结构,其显示6-苯基-2-氨基嘧啶酮与胞嘧啶形成强的核碱基对,涉及三个氢键。发现该碱基对与天然鸟嘌呤:胞嘧啶(G:C)一样强,表明合成衍生物的潜在应用。此外,我们还报告了第二个共晶体,该晶体以5:1的比例包含5-异丙基-6-甲基-2-氨基嘧啶酮和胞嘧啶,这也显示出很强的碱基配对特性。