Abstract: Novel hydroquinone derivatives of the formulae (I) and (II), ##STR1## wherein R.sup.1 is an alkyl group having 7 to 11 carbon atoms, ##STR2## wherein each of R.sup.2 to R.sup.5 is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group provided that at least one of R.sup.2 to R.sup.5 is a lower alkyl group or a lower alkoxy group, and R.sup.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), ##STR3## wherein each of R.sup.7 to R.sup.10 is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group, and R.sup.11 is an alkyl group having a carbon chain of at least 2 carbon atoms, and/or a salt thereof.

Abstract: Novel 3,4-dihydroxychalcone derivatives useful as a pharmaceutical material, and novel anti-inflammatory preparations. The 3,4-dihydroxychalcone derivatives are compounds of the formula [I], ##STR1## wherein X is a substituted phenyl group represented, e.g., by the formula (i), ##STR2## in which R.sup.1 is a hydrogen atom or an alkyl group and R.sup.2 is an alkyl group, an alkoxy group or an --OH group (excluding an OH-group in the 4-position)or salts thereof. The anti-inflammatory preparations contain one of the above 3,4-dihydroxychalcone derivatives as an active ingredient.

Abstract: A food composition prepared from a lactic acid fermented aqueous liquorice extract which is free of the disadvantages of extremely strong sweetness which makes liquorice extracts unsuitable for maintaining and enhancing the pharmacological activities (both disease preventing and treating effects) of treating ulcers and hepatic diseases.

Abstract: The preparation for preventing and curing organ dysfunctions, provided by the present invention, is a medicament having the activity to prevent and cure organ dysfunctions which active oxygen species and active organic radical species would cause, and unconventionally improved in stability in vivo by containing, as an active component, the ascorbic acid derivative of the formula, ##STR1## wherein R.sub.2 is a group selected from the class consisting of an alkylcarbonyl lower alkyl group of which the terminal alkyl group has 7 inclusive to 15 inclusive carbon atoms, an alkyl group having 9 inclusive to 17 inclusive alkyl groups and an alkoxycarbonyl lower alkyl group of which the terminal alkoxy group has 7 inclusive to 20 inclusive carbon atoms; and the ascorbic acid derivative of the above formula in which R.sub.

Abstract: This invention relates to a novel ascorbic acid derivative having excellent antioxidant action and a process for preparing the same.Furthermore, this invention also relates to a novel antioxidant comprising the aforementioned ascorbic acid derivative or other known ascorbic acid derivatives.

Abstract: This invention relates to a novel ascorbic acid derivative having excellent antioxidant action and a process for preparing the same.Furthermore, this invention also relates to a novel antioxidant comprising the aforementioned ascorbic acid derivative or other known ascorbic acid derivatives.

Abstract: This invention relates to a novel ascorbic acid derivative having excellent antioxidant action, particularly eliminating action on superoxides and a process for preparing the same. Furthermore, this invention also relates to a novel antioxidant comprising the afore-mentioned novel ascorbic acid derivative or other known ascorbic acid derivatives.

Abstract: This invention relates to a novel ascorbic acid derivative having excellent antioxidant action, particularly eliminating action on superoxides and a process for preparing the same.Furthermore, this invention also relates to a novel antioxidant comprising the aforementioned novel ascorbic acid derivative or other known ascorbic acid derivatives.

Abstract: The present invention relates to novel benzothiazine-1,1-dioxide derivatives. These benzothiazine-1,1-dioxide derivatives have a high hyaluronidase-inhibiting activity and accordingly can be used in drugs such as anti-inflammatory agent, anti-allergic agent and the like.

Abstract: Novel hydroquinone derivatives of the formulae (I) and (II), ##STR1## wherein R.sup.1 is an alkyl group having 7 to 11 carbon atoms, ##STR2## wherein each of R.sup.2 to R.sup.5 is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group provided that at least one of R.sup.2 to R.sup.5 is a lower alkyl group or a lower alkoxy group, and R.sup.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), ##STR3## wherein each of R.sup.7 to R.sup.10 is independently a hydrogen atom, a lower alkyl group or a lower alkoxy group, and R.sup.11 is an alkyl group having a carbon chain of at least 2 carton atoms, and/or a salt thereof.