Studies on Nitrofuran Derivatives. IV. Synthesis of 2- or 4-[2-(5-Nitro-2-furyl) vinyl] pyrimidine Derivatives
作者:Akio Fujita、Tadatsugu Yamamoto、Shinsaku Minami、Hideji Takamatsu
DOI:10.1248/cpb.13.1183
日期:——
To test the antibacterial activity, 2- or 4-[2-(5-nitro-2-furyl) vinyl] pyrimidines were synthesized by the condensation of 5-nitro-2-furaldehyde (Va) with the active methyl group of pyrimidines. It has been found that Va predominantly condensed with the 4-methyl group of 2, 4-dimethylpyrimidine and in the reaction of Va with 2, 4-dimethylpyrimidine containing a functional group in the 6-position, the active hydrogen reactivity between the 2-methyl group and 4-methyl group is affected by the presence of group in the 6-position : in 2, 4-dimethylpyrimidines substituted by the hydroxy, amino and alkoxy group in the 6-position, the 2-methyl group was founded to be more active, while in the ones substituted by the acetamido, dimethylamino and chloro group, the 4-methyl group was more reactive.
为了测试抗菌活性,通过 5-硝基-2-呋喃甲醛(Va)与嘧啶的活性甲基缩合,合成了 2-或 4-[2-(5-硝基-2-呋喃基)乙烯基]嘧啶。研究发现,Va 主要与 2,4-二甲基嘧啶的 4-甲基缩合,在 Va 与 6 位含有官能团的 2,4-二甲基嘧啶反应时,2-甲基和 4-甲基之间的活性氢反应性受 6 位官能团的影响:在 6 位被羟基、氨基和烷氧基取代的 2,4-二甲基嘧啶中,2-甲基基团的活性更高,而在被乙酰氨基、二甲基氨基和氯基团取代的 2,4-二甲基嘧啶中,4-甲基基团的活性更高。