The present invention provides compounds represented by the general formula (I): ##STR1## and a salt thereof, and anti-inflammatory agents and antitumor agents containing the compounds as the active ingredients.

A invenção atual fornece os compostos representados pela fórmula geral (i): ## do ## STR1 e um sal disso, e agentes anti-inflammatory e agentes antitumor que contêm os compostos como os ingredientes ativos.