Regiospecific one-pot, combinatorial synthesis of new substituted pyrimido[4,5-$c$]pyridazines as potential monoamine oxidase inhibitors
作者:Mehdi RIMAZ、Paria POURHOSSEIN、Behzad KHALILI
DOI:10.3906/kim-1408-32
日期:——
New 3-aryl-6-methylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-diones and 3-aryl-6-ethyl-7-thioxo-7,8-dihydropyrimido[4,5-c]pyridazin-5(6H)-ones were efficiently synthesized via a regiospecific one-pot reaction of N-methylbarbituric acid and N-ethyl-2-thiobarbituric acid with various arylglyoxal monohydrates in the presence of hydrazine dihydrochloride in ethanol at 50 °C. The target compounds were obtained in high yields and were regioisomerically pure after recrystallization. These new heterocycles may act as potential MAO_B} inhibitors.
新型的3-芳基-6-甲基吡啶并[4,5-c]吡啶嗪-5,7(6H,8H)-二酮和3-芳基-6-乙基-7-硫酮-7,8-二氢吡啶并[4,5-c]吡啶嗪-5(6H)-酮,通过N-甲基巴比妥酸和N-乙基-2-硫巴比妥酸与各种芳基甘油醛一水合物在乙醇中50°C下,通过盐酸肼作为催化剂的一锅法选择性反应高效合成。目标化合物在重结晶后得到高产率和纯的区域异构体。这些新型杂环化合物可能作为潜在的MAO-B抑制剂。