作者:Junichi Shimada、Takeshi Kuroda、Fumio Suzuki
DOI:10.1002/jhet.5570300141
日期:1993.1
A convenient synthesis of new heterocycles such as 7,8-dihydro-1H-imidazo[2,1-i]purin-5(4H)-ones (2, n = 0) and 5,6-dihydro-1H-imidazo[2,1-b]purin-9(8H)-ones (3) was described. The syntheses of 2 and 3 were accomplished by treatment of 6-methylthio-7H-purin-2(3-H)-ones 7 or 2-benzylthio-1-methyl-9-triphenylmethyl-9H-purin-6(1H)-one (15) with appropriate aminoalcohol followed by dehydrative cyclization
方便合成新的杂环,例如7,8-dihydro-1 H-咪唑并[2,1- i ] purin-5(4 H)-ones(2,n = 0)和5,6-dihydro-1 H描述了-咪唑并[2,1 - b ]嘌呤-9(8 H)-一(3)。通过处理6-甲硫基-7 H-嘌呤-2(3- H)-ones 7或2-苄硫基-1-甲基-9-三苯基甲基-9 H-嘌呤-6(1 )来完成2和3的合成。H)一(15)和适当的氨基醇,然后使用亚硫酰氯进行脱水环化。通过6-羟基-2-巯基嘌呤(12)的苄基化,三苯甲基化和N-甲基化来有效地制备化合物15。