A multi-component double Mannich cyclocondensation of 6-polyfluoroalkyl-2-thiouracils with formalin and heterocyclic amines (2-aminopyridine, 2-aminopyrimidine, 4-aminoantipyrine) proceeded regiospecifically at the C=S and NH centers giving rise to 3-hetaryl-8-polyfluoroalkylpyrimido[2,1-b][1,3,5]thiadiazines. The regioisomeric structure of the products was established by X-ray crystallography, IR and NMR spectroscopy, GLC-MS spectrometry. 6-Trifluoromethyl-2-thiouracil and 8-polyfluoroalkylpyrimido[2,1-b]thiadiazines exhibited weak tuberculostatic activity.
6- 聚氟烷基-2-
硫脲嘧啶与
福尔马林和杂环胺(2-
氨基吡啶、2-
氨基嘧啶、
4-氨基安替比林)的多组分双曼尼希环缩合反应在 C=S 和 NH 中心发生了区域特异性反应,生成了 3-芳香族-8-聚氟烷基
嘧啶并[2,1-b][1,3,5]噻二嗪。通过 X 射线晶体学、红外光谱、核磁共振光谱和 GLC-MS 光谱分析,确定了这些产品的 Regioisomeric 结构。6-三
氟甲基-2-
硫脲嘧啶和 8-聚
全氟烷基
嘧啶并[2,1-b]噻二嗪具有较弱的抗结核活性。