| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compound useful as an intermediate for production of pyrazine carboxamide derivatives such as 6-fluoro-3-hydroxy-2-pyrazine carboxamide. <P>SOLUTION: This pyrazino[2,3-d]isoxazole derivative is expressed by general formula (I), wherein X represents a halogen atom, hydroxy group or sulfamoyloxy group; Y represents -C(=O)R or -CN; here R represents a hydrogen atom, alkoxy group, aryloxy group, alkyl group, aryl group or amino group. <P>COPYRIGHT: (C)2012,JPO&INPIT |
