abstract the present invention relates to quinazolinedione derivatives represented by formula (i) or pharmaceutically acceptable salts thereof. Patent Summary: "Quinazolidine-dione derivative". The present invention relates to a quinazolinodadione derivative or a pharmaceutically acceptable salt thereof which is represented by formula (i).abstract the present invention relates to quinazolinedione derivatives represented by formula (i) or pharmaceutically acceptable salts thereof. tradução do resumo resumo patente de invenção: "derivado de quinazolidina-diona". a presente invenção refere-se a um derivado de quinazoli-dinadiona ou um sal farmaceuticamente aceitável do mesmo o qual é representado pela fórmula (i).