Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
1997-10-14
2001-07-03
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C424S400000, C424S401000
Reexamination Certificate
active
06255332
ABSTRACT:
The invention relates to the use of oxazolidinone derivatives, in particular as anti-penetrating agents, in a composition for topical application intended especially to treat human facial and/or body skin, including the scalp, the hair and/or mucous membranes.
It is known to introduce active agents into cosmetic and/or dermatological compositions in order to provide treatments specific to the skin, mucous membranes or the hair, for example in order to combat the drying out, ageing or pigmentation of the skin, to treat acne or certain skin diseases (eczema, psoriasis), to combat problems of excess weight, to promote restructuring or cell renewal of the skin, to protect the skin or hair against the sun's rays, to cleanse or dye the skin or the hair, or alternatively to make up the skin.
Unfortunately, certain active agents have the drawback of causing stinging, itching or tightness after they have been applied, which may lead to considerable discomfort. Users with sensitive skin are thus often prevented from using these compounds.
A certain number of solutions have been proposed in order to overcome these drawbacks. In particular, document WO-A-93/21904 envisages using a water-soluble polyurethane in order to reduce the irritation caused by retinoic acid. Moreover, it is known to use certain polymer derivatives such as polyvinylpyrrolidone (see FR-A-2,224,126) or polyoxyethylenated polysiloxanes (see EP-A-266,921) in order to decrease the skin irritation. In addition, it is known from document EP-A-391,274 to use acrylic polymer coderivatives in solution in order to prevent the penetration of certain irritant products.
The inventors have found, surprisingly, that certain oxazolidinone derivatives have the property of reducing, or even eliminating altogether, the penetration of active agents while at the same time not decreasing their efficacy. This property may be exploited in order to decrease, or even eliminate altogether, the undesirable side effects introduced by these active agents, in particular active agents with an irritant or sensitizing side effect, that is to say agents having a potential for secondary risks. This property is all the more surprising since it is contradictory to what is described in the prior art. Indeed, document U.S. Pat. No. 4,960,771 describes the use of oxazolidinone derivatives in order to improve the penetration of physiologically active agents.
The subject of the invention is the use of at least one oxazolidinone derivative of formula (I):
in which:
R
1
represents a linear or branched, saturated or unsaturated hydroxyalkyl radical having from 6 to 27 carbon atoms,
R
2
represents hydrogen or a linear or branched, saturated or unsaturated alkyl or hydroxyalkyl radical having from 1 to 7 carbon atoms,
X and Y, which are different from each other, represent —NR
3
or an oxygen atom, R
3
representing hydrogen or a linear or branched, saturated or unsaturated alkyl or hydroxyalkyl radical having from 1 to 8 carbon atoms, in a cosmetic composition or for the manufacture of a dermatological composition containing a physiologically acceptable medium, in order to reduce or prevent the penetration of at least one active agent which is compatible with the skin, the hair and/or mucous membranes.
When the active agent can be potentially irritant or sensitizing, the presence of an oxazolidinone derivative according to the invention makes it possible to prevent the penetration of this active agent and thereby the irritation and/or sensitization of the composition containing it, without decreasing the efficacy of the active agent. A non-irritant composition which may be applied topically to human facial and/or body skin, the hair and/or mucous membranes may thus be obtained.
Thus, the subject of the present invention is also the use of at least one oxazolidinone derivative of formula (I)
in which:
R
1
represents a linear or branched, saturated or unsaturated hydroxyalkyl radical having from 6 to 27 carbon atoms,
R
2
represents hydrogen or a linear or branched, saturated or unsaturated alkyl or hydroxyalkyl radical having from 1 to 7 carbon atoms,
X and Y, which are different from each other, represent —NR
3
or an oxygen atom, R
3
representing hydrogen or a linear or branched, saturated or unsaturated alkyl or hydroxyalkyl radical having from 1 to 8 carbon atoms, in a cosmetic composition or for the manufacture of a dermatological composition containing a physiologically acceptable medium, in order to reduce or prevent the appearance of the irritant or sensitizing nature of at least one active agent having an irritant or sensitizing side effect.
The active agent may be found either in the same composition as the derivative of formula (I) or in another composition which is applied at the same time or after the composition containing the derivative of formula (I) is applied, or alternatively just before it is applied. Preferably, the active agent and the derivative of formula (I) are in the same composition.
The derivatives of formula (I) may be prepared conventionally by reaction of ethylene carbonate with an aminoalkane polyol at a temperature above 60° C. The synthesis may lead to the production of several positional isomers and stereoisomers.
The preferred derivatives of formula (I) are those in which, in formula (I), X represents —NH—, Y represents oxygen, R
1
represents a saturated hydroxyalkyl radical having from 12 to 20 carbon atoms and R
2
represents hydrogen or a saturated alkyl or hydroxyalkyl radical having from 1 to 3 carbon atoms.
As preferred derivatives of formula (I), mention may be made, for example, of 4-(1-hydroxyhexadecyl)-2-oxazolidinone, 4-pentadecyl-5-hydroxymethyl-2-oxazolidinone, 4-(1,2-dihydroxyhexadecyl)-2-oxazolidinone, 4-(1-hydroxypentadecyl)-5-hydroxymethyl-2-oxazolidinone, their stereoisomers and their mixtures.
The composition containing the derivative of formula (I) highly preferably contains a physiologically acceptable medium, that is to say one which is compatible with the skin, including the scalp, the hair and/or mucous membranes.
The invention applies to any active agent which is compatible with the skin, the hair and/or mucous membranes. As examples of active agents to which the invention applies more particularly, mention may be made of exfoliants, that is to say active agents having, in particular, a keratolytic and/or comedolytic property, sunscreens, dyestuffs, preserving agents, surfactants and fragrances.
As active agents, mention may be made more particularly of &agr;-hydroxy acids (glycolic acid, lactic acid, malic acid, citric acid, tartaric acid or mandelic acid), &bgr;-hydroxy acids (salicylic acid and its derivatives such as 5-n-octanoylsalicylic acid, 5-n-decanoylsalicylic acid, 5-n-dodecanoylsalicylic acid, 5-n-octylsalicylic acid, 5-n-heptyloxysalicylic acid and 4-n-heptyloxysalicylic acid), &agr;-keto acids, &bgr;-keto acids, retinoids (retinol, retinoic acid, retinal and their derivatives), anthralins (dioxyanthranol), anthranoids, peroxides (in particular benzoyl peroxide), Minoxidil, antimetabolites such as 5-fluorouracil, hair tints or dyes (para-phenylenediamine and its derivatives, aminophenols), perfuming alcoholic solutions (fragrances, eaux de toilette, aftershave and deodorants), antiperspirants (certain aluminium salts), hair-removing or permanent-waving active agents (thiols), depigmenting agents (hydroquinone), pigments and chemical screening agents.
Depending on the amount used and the skin-sensitivity of the user, these active agents may prove to be more or less irritant or sensitizing.
The amount of oxazolidinone derivative of formula (I) in the composition may range, for example, from 0.05 to 20%, and more particularly from 0.1 to 5%, by weight relative to the total weight of the composition. In the presence of active agent, this amount depends in particular on the amount of active agent in the composition.
Moreover, the amount of active agent may vary within a wide range depending on the nature and/or function of the active agent. This amount may range, for example, from 0
Morancais Jean-Luc
Philippe Michel
Tuloup Remy
Dodson Shelley A.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal
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