Hydroquinone derivatives and antioxidants and tumor inhibitors containing them.

摘要

Novel hydroquinone derivatives of the formulae (I) and (II), <CHEM> wherein R<1> is an alkyl group having 7 to 11 carbon atoms, <CHEM> wherein each of R<2> to R<5> is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group provided that at least one of R<2> to R<5> is a lower alkyl group or a lower alkoxy group, and R<6> is an alkyl group having a carbon chain of at least 2 carbon atoms. as compounds having antioxidant activity and tumor incidence inhibiting activity, and an antioxidant and a tumor incidence inhibitor containing, as an active ingredient, a hydroquinone derivative of the formula (III), <CHEM> wherein each of R<7> to R<1><0> is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group, and R<1><1> is an alkyl group having a carbon chain of at least 2 carbon atoms, and/or a salt thereof. <IMAGE>