The present invention relates to pyrazinone derivatives of formula (I):wherein R1, R2, R3, R4, R5, R6and R7are as herein defined; processes for their preparation, pharmaceutical compositions containing them and their use in therapy.本發明係有關於式(I)吡酮衍生物:其中R1、R2、R3、R4、R5、R6及R7如文中之定義;其等之製法、含其等之藥學組成物及其等在治療方面之用途。