The oxidative debenzyiation of tetraacetyldibenzylhexaazaisowurtzitane ( TADBIW ) by potassium permanganate as oxidation agent in acetic anhydride in the presence of boron fluride ethyl etherate catalyst gives tetraacetyldibenzoylhexaazaisowurtzitane (1), a new compound tetraacetylbenzoylbenzylhexaazaisowurtzitane (2) and hexaacetylhexaazaisowurtzitane (3) which is obtained by oxidation for the first time.