Synthesis, characterisation and theoretical calculations of 2,6-diaminopurine etheno derivatives
作者:Piritta Virta、Andreas Koch、Mattias U. Roslund、Peter Mattjus、Erich Kleinpeter、Leif Kronberg、Rainer Sjöholm、Karel D. Klika
DOI:10.1039/b505508c
日期:——
Four derivatives of 2,6-diaminopurine (1) were synthesised and characterised. When 1 was reacted with chloroacetaldehyde, 5-aminoimidazo[2,1-i]purine (2), 9-aminoimidazo[2,1-b]purine (3), 9-aminoimidazo[1,2-a]purine (4) and diimidazo[2,1-b:2',1'-i]purine (5) were formed. The purified products (3-5) were fully characterised by MS, complete NMR assignments as well as fluorescence and UV spectroscopy
合成并表征了2,6-二氨基嘌呤(1)的四种衍生物。当1与氯乙醛反应时,5-氨基咪唑并[2,1-i]嘌呤(2),9-氨基咪唑并[2,1-b]嘌呤(3),9-氨基咪唑并[1,2-a]嘌呤(4) )和二咪唑并[2,1-b:2',1'-i]嘌呤(5)。纯化的产物(3-5)通过MS,完整的NMR指定以及荧光和UV光谱进行了全面表征。这些产物(3-5)的纯化分离产率为2.5%至30%。通过理论计算研究了不同互变异构体的相对稳定性。还讨论了荧光特性,并将其与起始原料1和参比分子2-氨基嘌呤进行了比较。