摘要:
The invention relates to the benzylcyclanone derivatives of formula: ##STR1## where R.sub.1 and R.sub.3 denote H, OH, linear or branched C.sub.1 -C.sub.8 alkyl or linear or branched C.sub.1 -C.sub.8 alkoxy, R.sub.2 and R.sub.4 represent H or OH, at least one of the two being OH, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 represent H, C.sub.1 -C.sub.18 alkyl, aralkyl or aryl, it being possible for R.sub.5 and R.sub.6 and/or R.sub.7 and R.sub.8 to form an optionally substituted, saturated C.sub.5 -C.sub.12 ring, X represents O or --(CR.sub.9 R.sub.10).sub.n with n=1 or 2 and R.sub.9 and R.sub.10 represent H or CH.sub.3 ; if X represents --(CR.sub.9 R.sub.10).sub.n, R.sub.6 and R.sub.8, with the atoms of the ring to which they are attached, form a bicyclic system having 7 or 8 carbon atoms; if X represents --(CR.sub.9 R.sub.10).sub.n with n=1, R.sub.9 and R.sub.10 =CH.sub.3, R.sub.5 =H and R.sub.6 and R.sub.8, with the atoms of the ring to which are attached, form a bicyclic system having 7 carbon atoms, R.sub.7 can represent a --CH.sub.2 SO.sub.3 H residue, optionally in salt form.Process for preparing these compounds and their use as antioxidants and medicinal products for the treatment of skin allergies and inflammations.
摘要:
The invention relates to cosmetic and pharmaceutical compositions containing the derivatives of benzylidenecamphor of formula: ##STR1## where R.sub.1 denotes H, OH, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.8 alkoxy, R.sub.3 denotes OH, C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.8 alkoxy, or else when R.sub.1 denotes H or OH, R.sub.3 can represent C.sub.1 -C.sub.8 alkyl, R.sub.2 and R.sub.4 denote H or OH, at least one of the radicals R.sub.2 and R.sub.4 representing OH.The compounds (I) are wide-band sunscreens and antioxidants, and are utilized in the treatment of cutaneous inflammations and allergies.
摘要:
Cosmetic composition containing, by way of a compound screening cut UV of wavelengths 280-380 nm, a 5-benzylidene-3-oxacyclopentanone of formula (I): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote C.sub.1 -C.sub.8 alkyl, aralkyl or aryl, or alternatively R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 form, with the carbon to which they are attached, a saturated 5- or 6-membered ring, andR.sub.5, R.sub.6 and R.sub.7 denote H, C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, C.sub.1 -C.sub.12 alkoxy, C.sub.2 -C.sub.8 alkenyloxy, C.sub.2 -C.sub.12 acyloxy, benzyloxy or --COOR.sub.10 where R.sub.10 is a C.sub.1 --C.sub.8 alkyl, hydrogen, an alkali metal or alkaline earth metal or a radical derived from an amine, it also being possible for one of the substituents R.sub.5, R.sub.6 and R.sub.7 to denote a radical ##STR2## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have the above meanings. This composition can be a protective composition for the human epidermis or the hair or an antisun composition.New compounds of formula (I) in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7, have the same meanings, R.sub.6 being other than hydrogen, methyl and methoxy.
摘要:
The invention relates to benzylidenecamphor derivatives of formula: ##STR1## where R is hydrogen or a tert-butyl residue, R.sub.1 is a C.sub.1 -C.sub.8 alkyl or alkoxy residue, and R.sub.2 and R.sub.3 denote hydrogen or hydroxyl, at least one of the two being hydroxyl, to a process for preparing them and to their uses as antioxidants, broad-band sunscreens and medicinal products for the preventive treatment of skin allergies and inflammations as well as for the prevention of certain cancers.
摘要:
A photostable cosmetic filter composition for protecting human skin against UV radiation at wavelengths between 280 and 380 nm comprises, in a cosmetically acceptable support medium containing at least one oily phase, 1 to 3% by weight of a dibenzoylmethane derivative and at least 1% by weight of a substituted dialkylbenzalmalonate having formula I: ##STR1## R.sub.1 and R.sub.3 may be identical or different and represent H or a straight- or branched-chain C.sub.1 -C.sub.8 alkoxy radical. R.sub.2 and R.sub.4 represent a straight- or branched-chain C.sub.1 -C.sub.8 alkyl radical. The molar ratio of compound (I) to the dibenzoylmethane derivative is greater than or equal to 0.6.
摘要:
A photostable cosmetic filter composition for protecting human skin against UV radiation at wavelengths between 280 and 380 nm comprises, in a cosmetically acceptable support medium containing at least one oily phase, 1 to 3% by weight of a dibenzoylmethane derivative and at least 1% by weight of a substituted dialkylbenzalmalonate having formula I: ##STR1## R.sub.1 and R.sub.3 may be identical or different and represent H or a straight- or branched-chain C.sub.1 -C.sub.8 alkoxy radical.R.sub.2 and R.sub.4 represent a straight- or branched-chain C.sub.1 -C.sub.8 alkyl radical.The molar ratio of compound (I) to the dibenzoylmethane derivative is greater than or equal to 0.6.
摘要:
The invention relates to a photostable screening cosmetic composition for protecting human skin against UV rays, comprising, in a cosmetically acceptable substrate containing at least one fatty phase, 1 to 3% by weight of 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane and at least 4.5% by weight of p-methylbenzylidenecamphor, the weight ratio of p-methylbenzylidenecamphor to 4-(1,1-dimethyl-ethyl)-4'-methoxydibenzoylmethane being higher than or equal to 3.It also relates to a process for protecting the skin against UV radiation and to a process for stabilizing 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane against UV radiation.
摘要:
The present invention relates to 1-substituted derivatives of 4-methoxy-2,3,6-trimethylbenzene which are useful in cosmetic or pharmaceutical preparations for use in the treamtnet of dermatological complaints connected with a keratinisation disorder, dermatological complaints having an inflammatory and/or immuno-alleric component or ophthalmological complaints.
摘要:
The invention provides a compound of formula (II): ##STR1## and the corresponding isomers and salts; in this formula, a equals 0 or 1; R.sub.1 and R.sub.2 represent, independently, H or a C.sub.1 -C.sub.4 alkyl group; R.sub.3 denotes --C.tbd.N; oxazolinyl; --CH.sub.2 OR.sub.4 (R.sub.4 =H, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.6 mono- or poly-hydroxyalkyl, cyclopentyl or cyclohexyl, or --OR.sub.4 =tetrahydropyranyl); --COR.sub.5 (R.sub.5 =H, C.sub.1 -C.sub.4 alkyl, --NR'R" where R' and R" have various meanings); --OR.sub.6 (R.sub.6 =H, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.3 monohydroxyalkyl or C.sub.3 -C.sub.6 polyhydroxyalkyl with 2-5 OH groups), which has useful medicinal and cosmetic applications.
摘要:
A benzofuran derivative which is a compound of formula (I): ##STR1## wherein a to d each are 0 or 1, with a+b+c+d.gtoreq.2; R.sub.1 to R.sub.6 are each H or C.sub.1 -C.sub.6 alkyl; R.sub.7 is --CH.sub.2 OR.sub.8 (R.sub.8 =H, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 mono- or polyhydroxyalkyl), --COR.sub.9 (R.sub.9 =H, C.sub.1 -C.sub.6 alkyl, ##STR2## which is an amino acid or amino sugar residue or where R' and R" are H, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 mono- or polyhydroxyalkyl, C.sub.3 -C.sub.6 alkenyl or form a heterocycle) or OR.sub.10 (where R.sub.10 is H, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.6 mono- or polyhydroxyalkyl or --OR.sub.10 is derived from a sugar) has retinoid type action and can be used in cosmetics (body and hair hygiene) and in medicine (treatment of dermatological conditions; atopy; degenerative diseases of connective tissue; or corneopathies).