作者:Taisei Ueda、Rikisei Oh、Shin-Ichi Nagai、Jinsaku Sakakibara
DOI:10.1002/jhet.5570350125
日期:1998.1
Fused purines 3a-f were prepared by one-step from 8-aminotheophylline (1) and α,ω-dibromoalkanes in N, N-dimethylformamide in the presence of sodium hydride. Reaction of 3c-e with chloroacetyl chloride followed by treatment with dimethylamine gave 6a-c. A one-step reaction of 1 with ethyl bromopropionate gave 1,3-dimethyl-1,2,3,4,6,7,8,9-octahydropyrimido[2,1-f]purine-2,4,8-trione (7b). Facile syntheses
在氢化钠存在下,由N - N-二甲基甲酰胺中的8-氨基茶碱(1)和α,ω-二溴代烷烃一步一步制备融合的嘌呤3a-f。的反应3C-E与氯乙酰氯,接着用二甲胺,得到6A-C 。1与溴丙酸乙酯的一步反应,得到1,3-二甲基-1,2,3,4,6,7,8,9-八氢嘧啶[ 2,1- f ]嘌呤-2,4,8-三酮(7b)。还可以轻松地从1合成7a,c,d。