Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
  • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P5/00—Drugs for disorders of the endocrine system

Definitions

• the invention relates to an agent for transdermal application, characterized in that it contains gestodene esters with 1 to 20 carbon atoms in the ester residue, optionally in combination with one or more estrogens.
• R represents an acyl radical having 1 to 20 carbon atoms.
• the invention preferably relates to such agents for transdermal application with gestodene esters with 2 to 12 carbon atoms in the acyl radical and in particular to such agents which contain gestodene alkanoates with 2 to 8 carbon atoms in the alkanoyl radical.
• the gestoden propionate, the gestodene valerate and in particular the gestodene capronate, which are also the subject of the present invention and whose production is described later, should be particularly emphasized as suitable previously unknown gestodene nests.
• Gestoden itself is known to be a substance with exceptionally high gestagenic activity (B. Düsterberg, Steroids 43, 1984, 43ff), which is used in combination with estrogenically active substances to produce oral contraceptives (Femovan®). It is previously known that gestodes themselves can be applied transdermally (EP-A 0370220). Furthermore, it is previously known that the esters of gestodene also exhibit strong gestagenic activity when administered orally (US Pat. No. 4,081,537).
• gestodene esters can surprisingly, if appropriate in combination with one or more estrogens, often be used better for the preparation of an agent for transdermal application of the active compounds than combination preparations which contain gestodene themselves.
• the esterification of the 17ß-standing hydroxyl group of gestodens changes the physicochemical properties of this substance in a targeted and bioreversible manner in the sense of pro-drug formation.
• the exceptionally high transdermal flows can be explained in particular by the surprisingly favorable solubilities found for the above-mentioned esters of gestodene in the usual skin pressure sensitive adhesives and their mixtures with cosolvents or penetration enhancers. Because of this property, highly loaded and stable matrix transdermal systems with molecularly dispersed Gestoden-pro-drugs can now be produced for the first time. Even drug loads that are molecularly 10 times higher than comparable gestods can lead to stable systems. This is a decisive advantage over the gestodene-containing systems, which are already known from EP-A 0370220, since the concentration gradient between transdermal systems and skin is largely responsible for the amount of transdermal flows that can be achieved.
• the agent according to the invention can contain one or more estrogens in addition to gestodene esters.
• Suitable estrogens are, for example, estradiol, estriol, ethinyl estradiol, mestranol, 14 ⁇ , 17 ⁇ -ethanoestra-l, 3,5 (10) -triene-3,17ß-diol (WO 88/01275), 14 ⁇ , 17 ⁇ -Ethanoestra- l, 3,5 (10) -triene-3,16 ⁇ , 17ß-triol (WO 91/08219) and their esters (EP-A 163596), such as the estradiol dipropionate, the estradiol di-xanoate and the estradiol didecanoate.
• these combination preparations according to the invention preferably contain 1 to 3, in particular 1 to 2, estrogens.
• the active ingredient or the active ingredient mixture can be prepared in suitable volatile solvents and / or penetration-enhancing agents Funds are dissolved or suspended.
• the solutions or suspensions obtained can be mixed with the usual auxiliaries, such as matrix formers and bactericides and, if appropriate, filled into conventional metering containers after sterilization.
• auxiliaries such as matrix formers and bactericides
• Suitable volatile solvents are, for example, lower alcohols, ketones or lower carboxylic acid esters such as ethanol, isopropanol, acetone or ethyl acetate, polar ethers such as tetrahydrofuran, lower hydrocarbons such as n-hexane, cyclohexane or gasoline or also halogenated hydrocarbons such as dichloromethane, trichloromethane, trichlorotrifluor and trichlorofluoromethane. There is no need to explain that mixtures of these solvents are also suitable.
• Suitable penetration-enhancing agents are, for example, monohydric or polyhydric alcohols, such as ethanol, 1,2-propanediol or benzyl alcohol, saturated and unsaturated fatty alcohols with 8 to 18 carbon atoms, such as lauryl alcohol or cetyl alcohol, hydrocarbons such as mineral oil, saturated and unsaturated fatty acids with 8 to 18 Carbon atoms, such as stearic acid or oleic acid, fatty acid esters with up to 24 carbon atoms or dicarboxylic acid diesters with up to 24 carbon atoms.
• monohydric or polyhydric alcohols such as ethanol, 1,2-propanediol or benzyl alcohol
• saturated and unsaturated fatty alcohols with 8 to 18 carbon atoms such as lauryl alcohol or cetyl alcohol
• hydrocarbons such as mineral oil
• saturated and unsaturated fatty acids with 8 to 18 Carbon atoms such as stearic acid or oleic acid
• Fatty acid esters which are suitable for strengthening the penetration are, for example, those of acetic acid, caproic acid, lauric acid, myristic acid, stearic acid, palmitic acid or oleic acid. Butyl esters or monoglycerol esters of these acids. Particularly preferred esters are those of myristic acid or oleic acid, such as their methyl ester, their isopropyl ester or their monoglycerol ester. Suitable dicarboxylic acid diesters are, for example, diisopropyl adipate, diisobutyl adipate and diisopropyl sebacate.
• Further penetration-enhancing agents are phosphatide derivatives such as lecithin, terpenes, amides, ketones, urea and its derivatives or ethers such as, for example, diethylene glycol monoethyl ether or dimethyl isosorbide. No further explanation is required that mixtures of these penetration-enhancing agents are also suitable for producing the agent according to the invention.
• concentration at which the active ingredient or active ingredient mixture is optimally dissolved or suspended in the solvent is usually from 0.01 to 40 percent by weight for gestodene esters.
• the concentration is of course dependent on the type of active ingredient used and the desired single dose; in individual cases, it must be carried out by means of preliminary tests familiar to the person skilled in the art, such as, for example, determining the achievable active ingredient concentrations in plasma after dermal application selected systems according to the invention can be determined.
• active ingredient concentrations 0.01 to 25 percent by weight of estrogen in the agent according to the invention will also be sufficient here.
• the weight ratio of gestodene ester (s) to the estrogen (s) for the combination preparations is 5: 1 to 1:10.
• the therapeutically required transdermal daily dose depends on the indication and is in the range of approx. 25-75 ⁇ g gestodes per day.
• the gestodene esters are dosed equimolar in order to take into account the increase in molecular weight due to the formation of the prodrug.
• the daily dose for Gestodencaproat is approx. 30-100 ⁇ g.
• transdermal therapeutic systems are those which are usually used for the percutaneous application of active substances (Yie W. Chien: “Transdermal Controlled Systemic Medications", Marcel Dekker Inc., New York and Basel 1987, Dr. Richard Baker: "Analysis of Transdermal Drug Delivery Patents 1934 to 1984 "and” Analysis of Recent Transdermal Delivery Patents, 1984-1986 and Enhancers "Membrane Technology & Research 1030 Hamilton Court Menlo Park CA 94025 (415) 328-2228).
• transdermal therapeutic system which consists of
• an impermeable top layer in up to three adhering to the top layer, the gestodene ester or esters, optionally the estrogen (s) and, if desired penetration-enhancing agents containing, permeable to these components, self-adhesive matrix layer (s), a peelable protective layer, or covered or surrounded by a skin pressure-sensitive adhesive, if desired, containing penetration-enhancing agents, or
• a pressure-sensitive adhesive provided with a pressure-enhancing agent if desired, one to three (in each case) leaving a pressure-sensitive adhesive border uncovered, attached to the pressure-sensitive adhesive by means of a cover, the gestodenester (s) optionally containing the estrogen (s) and penetration-enhancing agent (s) and a peelable protective layer, or
• an impermeable cover layer one to three drug reservoir (s) located on or in the cover layer and containing the gestodene ester (s), optionally the estrogen (s) and, if desired, penetration-enhancing agents, one to three polymer layer permeable to these components ( en) there is a permeable skin pressure-sensitive adhesive layer, optionally containing penetration-enhancing agents, and a removable protective layer.
• a transdermal therapeutic system according to variant a) represents a simple matrix system. It can, for example, be round, oval or rectangular in shape and can be produced as follows.
• a solution or suspension of up to 40 percent by weight of active ingredient or mixture of active ingredients, 0-40 percent by weight of a penetration-enhancing agent, 30-70 percent by weight of a medically customary adhesive filled with a suitable volatile solvent at 100 percent by weight is spread onto a flat, impermeable cover layer. After drying, a second and, if desired, even a third layer, optionally containing active ingredient, penetration-enhancing agents and adhesive, can be applied to this layer and dried. Then the matrix system is provided with a removable protective layer.
• a medically customary matrix former which does not adhere or does not adhere sufficiently to the skin after the system has dried, the system can also be covered or surrounded with a skin adhesive before the removable protective layer is applied.
• Suitable solvents and penetration-enhancing agents are, for example, the liquids of this type already mentioned.
• Suitable medically customary adhesives are, for example, polyacrylates, silicones, polyurethanes, block polymers, styrene-butadiene copolymers and natural or synthetic rubbers, such as polyisobutylenes. Cellulose ethers, polyvinyl compounds or silicates come into consideration as further matrix formers.
• the usual additives such as tackifying resins and oils, can be added to the matrix obtained.
• All films that are commonly used in transdermal therapeutic systems are suitable as a protective layer. Such films are siliconized or fluoropolymer coated, for example.
• 10 to 100 ⁇ m thick films made of polyethylene or polyester can be used as the top layer, optionally pigmented or metallized.
• the drug layer applied thereon preferably has a thickness of 20 to 500 ⁇ m.
• the active ingredients are preferably dispensed over an area of 5 to 100 cm 2 .
• the gestodester or esters and, if appropriate, the penetration enhancers can be introduced into the matrix applied to the impermeable cover layer, while the layer or layers below contains the estrogens and, if appropriate, likewise penetration enhancers.
• the layer or layers below contains the estrogens and, if appropriate, likewise penetration enhancers.
• a transdermal therapeutic matrix system according to variant b can, for example, also be round, oval or rectangular and can be produced as follows.
• a cover is coated with a skin pressure sensitive adhesive. Then, one to three punched-out areas of a matrix layer provided with an impermeable cover and containing the gestodene ester (s), optionally the estrogen (s) and penetration-enhancing agents, are glued onto these per TTS in such a way that the cover has a sufficient edge for attachment to the Skin and in the case of several areas also has sufficient gaps and provides them with a removable Protective layer.
• the materials used in this matrix system can be the same as those in variant a.
• a transdermal therapeutic reservoir system according to variant c can, for example, also be round, oval or rectangular and can be represented as follows;
• An impermeable film is deformed by heat and / or tension so that one to three 0.1 to 3 ml bulges are formed.
• This is filled with an active ingredient-containing solution or suspension containing 1-50 percent by weight of active ingredient or mixture of active ingredients with a penetration-enhancing agent.
• the active ingredient-containing solution or suspension can also be thickened with up to 10 percent by weight of matrix former.
• a welded-on or glued-on permeable polymer layer serves to cover the reservoir towards the skin, to which a permeable skin pressure-sensitive adhesive layer and a removable protective layer are applied.
• the above-mentioned penetration enhancing agents can be used in this system.
• a 20 to 200 ⁇ m thick film made of cellulose esters, cellulose ethers, silicones or polyolefin compounds is used as the permeable polymer layer.
• the diffusion rate of the active ingredient or mixture of active ingredients can be varied within wide limits.
• the active substance-containing matrix systems or drug reservoirs can contain not only different active substances but also different penetration-enhancing agents.
• Marix systems according to variant a or b care must be taken to ensure that the areas are adequately spaced so that the active ingredients diffuse into each prevent other areas.
• the reservoir systems according to variant c it is possible to provide the individual reservoirs with differently permeable polymer layers in order to adapt the diffusion flow of the individual active ingredients to the respective needs.
• FIG. 1 shows a cross section through a simple round matrix system according to variant a without the removable protective layer. It consists of the impermeable cover layer 1 and the drug-containing matrix layer 2.
• Fig. 2 shows a cross section through a matrix system according to variant b without the removable protective layer.
• Fig. 3 shows the supervision of this system.
• the system consists of the cover 3, which is provided with a pressure-sensitive adhesive layer 4.
• Two drug-containing matrix layers 6 and 8 are attached to this pressure-sensitive adhesive layer by means of impervious covers 5 and 7.
• FIG 4 shows a cross section through a round single-chamber reservoir system according to variant c without the removable protective layer. It consists of the impermeable cover layer 9, the drug reservoir 10, the permeable polymer layer 11 and the skin pressure-sensitive adhesive layer 12.
• FIG. 5 shows a cross section through a round two-chamber reservoir system according to variant c without the removable protective layer. It consists of the impermeable cover layer 13, the two semicircular drug reservoirs 14 and 15, the permeable polymer layer 16 and the skin pressure-sensitive adhesive layer 17.
• An emulsion gel for transdermal application consists, for example, of the active ingredient or mixture of active ingredients, penetration-enhancing agents, emulsifiers (where ambiphilic representatives of the penetration-enhancing agents can serve as emulsifiers) and, if appropriate, matrix formers.
• a typical formulation consists of 0.1-25 percent by weight of active ingredient or mixture of active ingredients, 0-10 percent by weight of emulsifier, 0-5 percent by weight of matrix former, 0 to 50 percent by weight penetration-enhancing agents and water to 100 percent by weight.
• the agent is emulsified in the usual way and, if necessary, the usual antioxidants, preservatives, etc. are added.
• Single-phase gels are obtained, for example, by dissolving or suspending the active ingredient or the active ingredient mixture in solvents such as water, lower alcohols or mixtures thereof, optionally with the addition of penetration-enhancing agents and thickening with matrix formers.
• Typical formulations for such gels contain 0.01-25% by weight of active ingredient or mixture of active ingredients, 1-20% by weight of matrix former, 0 to 40% by weight of penetration-enhancing agents supplemented with the solvent to 100% by weight.
• these gels can also contain antioxidants, preservatives, etc.
• a typical spray formulation is, for example:
• the blowing agent can be dispensed with.
• the gestodenester-containing agents for transdermal application according to the invention can be used to treat the same diseases as the previously known agents, for example to be administered orally, which contain highly effective gestagens.
• the optionally estrogen-containing preparations according to the invention can also be used to prevent conception.
• the agents according to the invention have particular advantages in the treatment of diseases which require long-term treatment with a relatively high dosage of the active ingredients.
• the application can be significantly reduced frequency and a significantly gleichrnäßigerer ⁇ blood plasma level can be achieved.
• transdermal use of estrogens in sequential or continuous combination with gestodene testers offers particular advantages, for example for the treatment of climacteric complaints, for the prevention of osteoporosis, for cycle regulation and for cycle stabilization.
• Polyester film 0.074 mm thick (Skotchpak ® 1009 from 3M; polypropylene (Celgard ® 2500) from Celanese, liner film Skotchpak ® 1022 and 1360 from 3M; transfer adhesive 9871 from 3M, polyacrylate adhesive of type Sichello ® J 6610 -21 manufactured by Henkel KG, polyisobutylene adhesive of the Oppanol ® B 15SF type from the manufacturer BASF, polyacrylate ester adhesive of the Gelva ® Monsanto type, silicone adhesive of the X-7-4502 type from Dow Coming and hydroxypropyl cellulose of the Klucel ® HXF type from the manufacturer Hercules.
• A Means for transdermal application
• the mixture is applied to polyester film by means of a coating device in such a way that, after removal of the volatile solvent, a uniform film of 40 g / m 2 of solids is formed. It is then laminated with a fluoropolymer-coated polyester liner.
• the laminate obtained in this way is divided by means of a punching device into individual plaster of 10 cm 2 in area and packed in aluminum foil.
• Fig. 1 shows a cross section through this plaster without polyester liner. The patch adheres to the skin after the liner film has been removed.
• the content determination gives an even distribution of active ingredient of 0.08 mg / cm 2 on average.
• the content determination results in an even distribution of active ingredient of 8 mg / cm 4 on average.
• the solution is applied to polyester film by means of a coating device in such a way that, after removal of the volatile solvents, a uniform film of 100 g / m 2 of solids is formed. It is then laminated with a siliconized, active ingredient-free liner film.
• the laminate thus obtained is divided into individual plasters with an area of 10 cm 2 by means of a punching device and packed in aluminum foil. The patch adheres to the skin after the liner film has been removed.
• the gestodenvalerate content averages 0.5 mg / cm 2 .
• the mixture is applied to polyester film by means of a coating device in such a way that, after removal of the volatile solvents, a uniform film of 70 gm 2 solids is formed. It is then laminated with a siliconized, active ingredient-free liner film.
• the laminate obtained in this way is divided into individual plasters with an area of 5 cm 2 by means of a punching device and packed in aluminum foil. The patch adheres to the skin after the liner film has been removed.
• estradiol and gestodene capronate are equally 0.35 mg / cm 2 .
• the matrix system I is composed of the following composition from the matrix layer 8 provided with a polyester film 7
• the matrix system II consists of the matrix layer 6 provided with a polyester film 5 and having the following composition
• Both matrix systems are glued to a cover film coated with skin pressure sensitive adhesive, as shown in FIG. 3. After lamination and punching out, plasters of the type shown in FIGS. 2 and 3 are produced.
• a 7.4 cm diameter polyester film is deformed by means of tension and heat in such a way that a protruding bulge of 10 cm 2 area is formed. This is mixed with 1 ml of a suspension of
• Fig. 4 shows a cross section through a plaster of this type without a liner.
• a polyester film is shaped in such a way that two semicircular bulges, each separated by a web, of 7.5 cm 2 in area are formed.
• Reservoir I is filled with 0.75 ml of a suspension of
• Fig. 5 shows a cross section through such a plaster without a liner.
• estradiol 0.02 g gestodene propionate 10.0 g 1,2-propanediol and 10.0 g isopropyl myristate
• gestodene capronate 20.00 g of gestodene capronate are dissolved in 1000 g of isopropyl myristate, sterile filtered and filled into 5 ml medication bottles under aseptic conditions.
• a solution of 10 g gestoden in 60 ml pyridine is mixed with 30 ml valeric anhydride and, after adding 1.0 g 4-pyrrolidinopyridine, kept at 60 ° C. for 20 hours.
• the reaction solution is stirred into 500 ml of water, the mixture is stirred for 5 hours and the resulting precipitate is washed with water and dried.
• the crude product thus obtained is chromatographed on silica gel using a pentane-diethyl ether gradient (0-50% diethyl ether) (diameter of the column 6 cm, filling height 30 cm, particle size 0.015-0.04 mm).
• a solution of 15 g gestodene in 90 ml pyridine is mixed with 45 ml caproic anhydride and kept at 60 ° C. for 20 hours after the addition of 1.5 g 4-pyrrolidinopyridine.
• the reaction solution is stirred into 1 liter of water and the mixture is then subjected to steam distillation for 3 hours.
• the resulting oily product is taken up in dichloromethane, the solution is washed with water, dried with sodium sulfate and evaporated in vacuo.

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• 1993
  • 1993-08-26 DE DE4329242A patent/DE4329242A1/de not_active Withdrawn
• 1994
  • 1994-07-24 US US08/602,808 patent/US5858394A/en not_active Expired - Fee Related
  • 1994-07-29 WO PCT/EP1994/002496 patent/WO1995005827A1/de not_active Application Discontinuation
  • 1994-07-29 HU HU9503654A patent/HUT73236A/hu unknown
  • 1994-07-29 AU AU75336/94A patent/AU693802B2/en not_active Ceased
  • 1994-07-29 EP EP94925407A patent/EP0715518A1/de not_active Withdrawn
  • 1994-07-29 CA CA002170371A patent/CA2170371A1/en not_active Abandoned
  • 1994-07-29 JP JP7507297A patent/JPH09504783A/ja not_active Expired - Lifetime
• 1996
  • 1996-02-22 FI FI960800A patent/FI960800A/fi unknown
  • 1996-02-23 NO NO960724A patent/NO960724D0/no not_active Application Discontinuation

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