Synthesis of some novel pyrazolo[1,5-<i>a</i>]pyrimidine, 1,2,4-triazolo[1,5-<i>a</i>]pyrimidine, pyrido[2,3-<i>d</i>]pyrimidine, pyrazolo[5,1-<i>c</i>]-1,2,4-triazine and 1,2,4-triazolo[5,1-<i>c</i>]-1,2,4-triazine derivatives incorporating a thiazolo[3,2-<i>a</i>]benzimidazole moiety
作者:Hatem A. Abdel-Aziz、Nehal A. Hamdy、Issa M. I. Fakhr、Ahmad M. Farag
DOI:10.1002/jhet.5570450413
日期:2008.7
of enaminone 2 with 6-aminopyrimidine derivatives 7a,b afforded pyrido[2,3-d]pyrimidine derivatives 9a,b, respectively. The diazonium salts 11a or 11b coupled with compound 2 to yield the pyrazolo[5,1-c]-1,2,4-triazine and 1,2,4-triazolo[5,1-c]-1,2,4-triazine derivatives 13a and 13b. Some of the newly synthesized compounds exhibited a moderate effect against some bacterial and fungal species.
E -3-(N,N-二甲基氨基)-1-(3-甲基噻唑并[3,2- a ]苯并咪唑-2-基)丙-2-烯-1-酮(2)是通过1的反应合成的-(3-甲基噻唑并[3,2- a ]苯并咪唑-2-基)乙酮(1)与二甲基甲酰胺-二甲基乙缩醛。的反应2与5-氨基-3-苯基-1- ħ吡唑(图4a)或3-氨基-1,2,4-(1 ħ)三唑(图4b)布置吡唑并[1,5-一个]嘧啶和1,2,4-三唑并[1,5- a ]嘧啶衍生物6a和6b,而烯胺酮2的反应用6-氨基嘧啶衍生物7a,b分别得到吡啶并[2,3- d ]嘧啶衍生物9a,b。重氮盐11a或11b与化合物2偶联生成吡唑并[ 5,1- c ] -1,2,4-三嗪和1,2,4-三唑并[ 5,1- c ] -1,2,4 -三嗪衍生物13a和13b。一些新合成的化合物显示出对某些细菌和真菌物种的中等作用。