An efficient method for the synthesis of pharmaceutically prospective pyrrole–aminopyrimidine ensembles (in up to 91% yield) by the cyclocondensation of easily available acylethynylpyrroles with guanidine nitrate has been developed. The reaction proceeds under heating (110–115 °C, 4 h) in the KOH/DMSO system. In the case of 2-benzoylethynylpyrrole, the unexpected addition of the formed pyrrole–aminopyrimidine as N- (NH moiety of the pyrrole ring) and C- (CH of aminopyrimidine) nucleophiles to the triple bond is observed.
一种高效的方法已经开发出来,通过易得的酰基
乙炔吡咯与
硝酸胍的环缩合反应,合成了具有药用前景的
吡咯-
氨基嘧啶组合物(收率高达91%)。该反应在KOH/
DMSO体系中在加热条件下进行(110-115°C,4小时)。在2-苯甲酰基
乙炔吡咯的情况下,观察到形成的
吡咯-
氨基嘧啶作为N-(
吡咯环的NH部分)和C-(
氨基嘧啶的CH)亲核试剂意外地加到三键上。