کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1377236 | 981974 | 2006 | 4 صفحه PDF | دانلود رایگان |
Electron rich 6-[(dimethylamino)methylene]amino uracil 1, undergoes [4+2] cycloaddition reactions with various in situ generated glyoxylate imine and imine oxides 6 to provide novel pyrimido[4,5-d]pyrimidine derivatives of biological significance, after elimination of dimethylamine from the (1:1) cycloadducts and oxidative aromatisation. This procedure provides a convenient method for the direct synthesis of pyrimido[4,5-d]pyrimidines in excellent yields when carried out in the solid state and under microwave irradiations.
Electron-rich 6-[(dimethylamino)methylene]amino uracil 1 undergoes [4+2] cycloaddition reactions with various in situ generated glyoxylate imine and imine oxides to provide novel pyrimido[4,5-d]pyrimidine derivatives of biological significance, after elimination of 1,3-dimethylamine from the (1:1) cycloadducts and oxidative aromatisation.Figure optionsDownload as PowerPoint slide
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 16, Issue 13, 1 July 2006, Pages 3537–3540