Catalytic hydrogenation of 3-benzyloxycarbonylaminoazino[1,2-<i>x</i>]-azin-4-ones. A facile access to 3-amino-6,7,8,9-tetrahydro-4<i>H</i>-pyrido[1,2-<i>a</i>]pyridin-4-ones and 3-Amino-6,7,8,9-tetrahydro-4<i>H</i>-azino[1,2-<i>x</i>]pyrimidin-4-ones
作者:Simon Rečnik、Renata Toplak、Jurij Svete、Lucija Pizzioli、Branko Stanovnik
DOI:10.1002/jhet.5570370420
日期:2000.7
By catalytic hydrogenation of 3-(benzyloxycarbonyl)amino-4H-pyrido[1,2-a]pyridin-4-ones 28 and 29, and azino[1,2-x]pyrimidin-4-ones 32–35, 41, and 42, partial saturation of the heterocyclic systems and removal of the benzyloxycarbonyl moiety was observed to give 3-amino-6,7,8,9-tetrahydro-4H-pyrido[1,2 a]pyridin-4-ones 30 and 31, and 3-amino-6,7,8,9-tetrahydro-4H-azino[1,2-x]pyrimidin-4-ones 36–39
通过催化氢化3-(苄氧羰基)氨基-4 H-吡啶并[1,2- a ]吡啶-4-酮28和29,以及叠氮基[1,2 - x ]嘧啶-4-酮32-35,41,和42时,观察到杂环体系和除去苄氧羰基结构部分中的部分饱和,得到3-氨基-6,7,8,9-四氢-4- ħ -吡啶并[1,2一]吡啶-4-酮30和31和3-氨基-6,7,8,9-四氢-4 H-叠氮[1,2 - x ]嘧啶-4-酮36-39、43和44高产。该方法代表简单的两步合成,从杂环α-氨基化合物和(Z)-2-(苄氧基羰基)氨基-3-二甲基氨基丙酸甲酯开始,然后进行催化氢化。