A facile synthesis of [1,2,4]triazino[3,2-f]purines and [1,2,4]triazepino[3,2-f]purines |
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Authors: | Taisei Ueda Tsuneyasu Adachi Shin-Ichi Nagai Jinsaku Sakakibara Mitsuo Murata |
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Abstract: | 1,2,4]Triazino3,2-f]purines 3a-e and 1,2,4]triazepino3,2-f]purine 5 were synthesized by the reaction of 7,8-diamino-1,3-dimethylxanthine 1 with diketones such as glyoxal, diacetyl, dibenzoyl, pyruvic aldehyde dimethyl acetal, phenylglyoxal or acetylacetone in acetic acid in the presence of boric acid or polyphosphoric acid. |
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