Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/007—Pulmonary tract; Aromatherapy
  • A61K9/0073—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
  • A61K9/008—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy comprising drug dissolved or suspended in liquid propellant for inhalation via a pressurized metered dose inhaler [MDI]
• • 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
  • A61K31/58—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids containing heterocyclic rings, e.g. danazol, stanozolol, pancuronium or digitogenin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
  • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
  • A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P37/00—Drugs for immunological or allergic disorders
  • A61P37/08—Antiallergic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
  • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
  • A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers

Definitions

• the claimed invention was made by or on behalf of parties to a joint research agreement that was in effect on or before the date the claimed invention was made and the claimed invention was made as a result of activities undertaken within the scope of the joint research agreement
• the names of the parties to the joint research agreement are Glaxo Group Limited of Greenford, England and 3M Company of St Paul, Minnesota
• the present invention relates to novel pharmaceutical aerosol formulations, processes for their preparation, their use in therapy, metered dose inhalers containing said formulations and the use of biocompatible polymers in reducing the variability in the content uniformity and/or in providing enhanced fine particle fraction (FPF) in said formulations
• the delivery of medicinal formulations comprising for example a drug suspended or dissolved in a carrier, to the lungs by way of inhalation is an important means for treating a variety of conditions, including such common conditions as bronchial asthma and chronic obstructive pulmonary disease
• Steroids, ⁇ 2 -adrenoreceptor agonists, and anti-cholinergic agents are among the drugs that are administered to the lung
• Such drugs are commonly administered in aerosol formulations comprising the medicament, one or more propellants and a surfactant and/or a co-solvent, such as ethanol
• WO02/12265 and WO02/12266 disclose novel anti-inflammatory and anti-allergic compounds of the androstane series including a compound of formula (I)
• Inhaled medicinal aerosol formulations may be formulated as suspensions containing one or more hydrofluoroalkane (HFA) propellants, for example 1 ,1 ,1 ,2-tetrafluoroethane (HFA 134a) and 1 ,1 ,1 ,2,3,3,3-heptafluoro-n-propane (HFA 227)
• HFA hydrofluoroalkane
• the prescribed dose of aerosol medication delivered from the metered dose inhaler (MDI) to the patient consistently meets the specifications claimed by the manufacturer and complies with the requirements of the FDA and other regulatory authorities That is, every dose dispensed from the can should be the same within close tolerances Therefore it is important that the formulation be substantially homogenous throughout the canister and the administered dose at the time of actuation of the metering valve remains similar within close tolerances even after storage Thus the uniformity of the dose dispensed through the life of the commercially marketed device is important
• the problem of aggregation of the particulate drug may be manifest as a reduction in fine particle fraction (FPF) after storage
• FPF fine particle fraction
• the FPF is a measure of the dose dispensed which has the potential to reach the therapeutic portion of the lung
• a significant reduction in FPF means that the therapeutically effective amount of drug available to the patient is reduced, which is undesirable and may ultimately be dangerous
• Drug deposition may be on the canister walls or on components of the metered dose inhaler, such as the valve components including the metering chamber or the seals This deposition may not only result in drug loss thereby reducing the total drug content of the canister available to the patient but also can adversely affect the functioning of the device, resulting in the valve sticking, orifices becoming blocked or caking of drug Caked drug may work free subsequently so increasing the dose given to the patient in an unpredictable way Furthermore, extensive modifications to the canister and/or valve may be required to deal with this deposition
• HFA hydrofluoroalkane
• the invention provides a pharmaceutical aerosol formulation comprising i) a therapeutically effective amount of particulate medicament of formula (I)
• a propellant selected from the group consisting of 1 ,1 ,1 ,2-tetrafluoroethane or 1 ,1 ,1 ,2,3,3,3-heptafluoro-n-propane or mixtures thereof, and
• n and m independently represent an integer of at least one and the independent average value of n and m in the biocompatible polymer is between 6 and 25, and each unit of formula
• FIGURES Figure 1 shows the effect of a biocompatible polymer comprising compounds of formula (II) on mean dose delivered through the valve and %FPF (Anderson Cascade lmpactor stages 3-5, approximate aerodynamic diameter 1 1 - 4 7 ⁇ m) for a compound of formula (I), the data was collected using an Anderson Cascade lmpactor, at the beginning of use
• Figures 2 and 3 show the effect of a biocompatible polymer comprising compounds of formula (II) on mean dose delivered through the valve and %FPF on a combination of a compound of formula (I) and a ⁇ 2 - adrenoreceptor agonist (Compound B), the data was collected using an Anderson Cascade lmpactor, at the beginning of use
• Figures 4 and 5 show the effect of a biocompatible polymer comprising compounds of formula (II) on mean dose delivered through the valve and %FPF on a combination of a compound of formula (I) and a ⁇ 2 - adrenoreceptor agonist (Compound C), the data was collected using an Anderson Cascade lmpactor, at the beginning of use
• the independent average value of n and m in the biocompatible polymer is between 7 and 11
• the pharmaceutical aerosol formulation consists essentially of
• a propellant selected from the group consisting of 1 ,1 ,1 ,2-tetrafluoroethane, 1 ,1 ,1 ,2,3,3,3-heptafluoro-n-propane or mixtures thereof, and
• the pharmaceutical aerosol formulation consists of
• a therapeutically effective amount of particulate medicament of formula (I) or a solvate thereof (II) a propellant selected from the group consisting of 1 ,1 ,1 ,2-tetrafluoroethane, 1 ,1 ,1 ,2,3,3,3-heptafluoro-n-propane or mixtures thereof, and
• compositions described herein may be useful in human or veterinary medicine, in particular in the treatment human or animal subjects with inflammatory and/or allergic conditions
• a pharmaceutical aerosol formulation for use in human or veterinary medicine, particularly in the treatment of human or animal subjects with inflammatory and/or allergic conditions
• a pharmaceutical aerosol formulation for the manufacture of a medicament for the administration by inhalation for the treatment of respiratory disorders, for example inflammatory and/or allergic conditions such as asthma or COPD
• a method for the treatment and/or prophylaxis of a respiratory disorder which comprises administering to a human or animal subject a pharmaceutical aerosol formulation, as hereinbefore described
• the pharmaceutical formulation according to the invention may additionally contain one or more other therapeutically active agents, for example selected from other antiinflammatory agents, anticholinergic agents (particularly an M 1 , M 2 , M 1 ZM 2 or M 3 receptor antagonist), ⁇ 2 -adrenoreceptor agonists, antiinfective agents (e g antibiotics, antivirals), or antihistamines
• other therapeutically active agents for example selected from other antiinflammatory agents, anticholinergic agents (particularly an M 1 , M 2 , M 1 ZM 2 or M 3 receptor antagonist), ⁇ 2 -adrenoreceptor agonists, antiinfective agents (e g antibiotics, antivirals), or antihistamines
• the invention thus provides, in a further aspect, a pharmaceutical aerosol formulation as hereinbefore described, together with one or more other therapeutically active agents, for example, selected from another anti-inflammatory agent (for example a corticosteroid or an NSAID), an anticholinergic agent, a ⁇ 2 -adrenoreceptor agonist, an antiinfective agent (e g an antibiotic or an antiviral), or an antihistamine
• another anti-inflammatory agent for example a corticosteroid or an NSAID
• an anticholinergic agent for example a corticosteroid or an NSAID
• an anticholinergic agent for example a corticosteroid or an NSAID
• an anticholinergic agent for example a corticosteroid or an NSAID
• an anticholinergic agent for example a corticosteroid or an NSAID
• an antiinfective agent e g an antibiotic or an antiviral
• Preferred formulations comprise a compound of formula
• the other therapeutic ⁇ ngred ⁇ ent(s) may be used in the form of salts, (e g as alkali metal or amine salts or as acid addition salts), or prodrugs, or as esters (e g lower alkyl esters), or as solvates (e g hydrates) to optimise the activity and/or stability and/or physical characteristics (e g solubility) of the therapeutic ingredient It will be clear also that where appropriate, the therapeutic ingredients may be used in optically pure form
• a pharmaceutical aerosol formulation comprising a compound of formula (I), as herein before described, together with a ⁇ 2 -adrenoreceptor agonist is particularly preferred
• ⁇ 2 -adrenoreceptor agonists include salmeterol (e g as racemate or a single enantiomer such as the R-enantiomer or the S-enantiomer), salbutamol (e g as racemate or a single enantiomer such as the R-enantiomer), formoterol (e g as racemate or a single enantiomer such as the R,R-enant ⁇ omer), fenoterol, carmoterol, etanterol, naminterol, clenbuterol, pirbuterol, flerbuterol, reproterol, bambuterol, terbutaline salmefamol, indacaterol and salts thereof, for example the xinafoate (1-hydroxy-2- naphthalenecarboxylate) salt of salmeterol, the sulphate salt of salbutamol or the fumarate salt of formoterol Long-acting ⁇ 2
• ⁇ 2 -adrenoreceptor agonists include those described in WO 02/066422, WO 02/070490, WO 02/076933, WO 03/024439, WO 03/072539, WO 03/091204, WO 04/016578, WO 2004/022547, WO 2004/037807, WO 2004/037773, WO 2004/037768, WO 2004/039762, WO 2004/039766, WO01/42193 and WO03/042160
• Particular ⁇ 2 -adrenoreceptor agonists include
• the ⁇ 2 -adrenoreceptor agonist may be in the form of a salt formed with a pharmaceutically acceptable acid selected from sulphuric, hydrochloric, fumaric, hydroxynaphthoic (for example 1- or 3-hydroxy-2-naphtho ⁇ c), cinnamic, substituted cinnamic, triphenylacetic, sulphamic, sulphanilic, naphthaleneacrylic, benzoic, 4-methoxybenzo ⁇ c, 2- or 4-hydroxybenzo ⁇ c, 4-chlorobenzo ⁇ c and 4-phenylbenzo ⁇ c acid
• a pharmaceutically acceptable acid selected from sulphuric, hydrochloric, fumaric, hydroxynaphthoic (for example 1- or 3-hydroxy-2-naphtho ⁇ c), cinnamic, substituted cinnamic, triphenylacetic, sulphamic, sulphanilic, naphthaleneacrylic,
• Suitable anti-inflammatory agents include corticosteroids
• Suitable corticosteroids which may be used in combination with the compounds of the invention are those oral and inhaled corticosteroids and their pro-drugs which have anti-inflammatory activity Examples include methyl prednisolone, prednisolone, dexamethasone, fluticasone propionate, 6 ⁇ ,9 ⁇ -d ⁇ fluoro-11 ⁇ -hydroxy-16 ⁇ -methyl-17 ⁇ -[(4-methyl-1 ,3-th ⁇ azole-5- carbonyl)oxy]-3-oxo-androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c ac ⁇ d S-fluoromethyl ester, 6 ⁇ ,9 ⁇ - dif luoro-11 ⁇ -hydroxy-16 ⁇ -methyl-3-oxo-17 ⁇ -prop ⁇ onyloxy- androsta-1 ,4-d ⁇ ene-17 ⁇ - carbothioic acid S-(2-oxo-tetrahydro-furan-3S-
• Non-steroidal compounds having glucocorticoid agonism that may possess selectivity for transrepression over transactivation and that may be useful in combination therapy include those covered in the following patents WO03/082827, WO01/10143, WO98/54159, WO04/005229, WO04/009016, WO04/009017, WO04/018429, WO03/104195, WO03/082787, WO03/082280, WO03/059899, WO03/101932, WO02/02565, WO01/16128, WO00/66590, WO03/086294, WO04/026248, WO03/061651 and WO03/08277
• Suitable anti-inflammatory agents include non-steroidal anti-inflammatory drugs (NSAID's)
• Suitable NSAID's include sodium cromoglycate, nedocromil sodium, phosphodiesterase (PDE) inhibitors (e g theophylline, PDE4 inhibitors or mixed PDE3/PDE4 inhibitors), leukotriene antagonists, inhibitors of leukotriene synthesis (eg montelukast), iNOS inhibitors, tryptase and elastase inhibitors, beta-2 integrin antagonists and adenosine receptor agonists or antagonists (e g adenosine 2a agonists), cytokine antagonists (e g chemokine antagonists, such as a CCR3 antagonist) or inhibitors of cytokine synthesis, or 5-l ⁇ poxygenase inhibitors
• An iNOS (inducible nitric oxide synthase inhibitor) is preferably for oral administration
• Suitable iNOS inhibitors include those disclosed in WO93/13055, WO98/30537,
• PDE4-spec ⁇ f ⁇ c inhibitor useful in this aspect of the invention may be any compound that is known to inhibit the PDE4 enzyme or which is discovered to act as a PDE4 inhibitor, and which are only PDE4 inhibitors, not compounds which inhibit other members of the PDE family, such as PDE3 and PDE5, as well as PDE4
• Compounds of interest include c;s-4-cyano-4-(3-cyclopentyloxy-4- methoxyphenyl)cyclohexan-1 -carboxylic acid , 2-carbomethoxy-4-cyano-4-(3- cyclopropylmethoxy-4-d ⁇ fluoromethoxyphenyl)cyclohexan-1 -one and c;s-[4-cyano-4-(3- cyclopropylmethoxy-4-d ⁇ fluoromethoxyphenyl)cyclohexan-1 -ol] Also, c;s-4-cyano-4-[3- (cyclopentyloxy)-4-methoxyphenyl]cyclohexane-1 -carboxylic acid (also known as cilomilast) and its salts, esters, pro-drugs or physical forms, which is described in U S patent 5,552,438 issued 03 September, 1996, this patent and the compounds it discloses are incorporated herein in full by reference
• Suitable anticholinergic agents are those compounds that act as antagonists at the muscarinic receptors, in particular those compounds which are antagonists of the M 1 or M 3 receptors, dual antagonists of the M 1 ZM 3 or M 2 /M 3 , receptors or pan-antagonists of the M 1 ZM 2 ZM 3 receptors
• Exemplary compounds for administration via inhalation include ipratropium (e g as the bromide, CAS 22254-24-6, sold under the name Atrovent), oxitropium (e g as the bromide, CAS 30286-75-0) and tiotropium (e g as the bromide, CAS 136310-93-5, sold under the name Spiriva)
• revatropate e g as the hydrobromide, CAS 262586-79-8
• LAS-34273 which is disclosed in WO01Z04118
• Exemplary compounds for oral administration include pirenzepine (CAS 28797-61-7), darifenacin (CAS 13
• anticholinergic agents include compounds of formula (XXI), which are disclosed in US patent application 60Z487981
• R 31 and R 32 are, independently, selected from the group consisting of straight or branched chain lower alkyl groups having preferably from 1 to 6 carbon atoms, cycloalkyl groups having from 5 to 6 carbon atoms, cycloalkyl-alkyl having 6 to 10 carbon atoms, 2-th ⁇ enyl,
• X " represents an anion associated with the positive charge of the N atom X " may be but is not limited to chloride, bromide, iodide, sulfate, benzene sulfonate, and toluene sulfonate, including, for example
• anticholinergic agents include compounds of formula (XXII) or (XXIII), which are disclosed in US patent application 60/511009
• R 41 represents an anion associated with the positive charge of the N atom
• R 41 may be but is not limited to chloride, bromide, iodide, sulfate, benzene sulfonate and toluene sulfonate,
• R 42 and R 43 are independently selected from the group consisting of straight or branched chain lower alkyl groups (having preferably from 1 to 6 carbon atoms), cycloalkyl groups
• R 44 is sleeted from the group consisting of (Ci-C 6 )alkyl, (C 3 -C 12 )cycloalkyl, (C 3 -
• R 45 is selected from the group consisting of (C 1 -C 6 JaIkYl, (C r C 6 )alkyl(C 3 -Ci 2 )cycloalkyl,
• R 46 is selected from the group consisting of (Ci-C 6 )alkyl, (C 3 -Ci 2 )cycloalkyl, (C 3 -
• R 47 and R 48 are, independently, selected from the group consisting of H, (Ci-C 6 )alkyl, (C 3 -
• C 7 heterocycloalkyl, (d-CeJalkyl-aryl, and (Ci-C 6 )alkyl-heteroaryl, including, for example
• More preferred compounds useful in the present invention include (Endo)-3-(2-methoxy-2,2-d ⁇ -th ⁇ ophen-2-yl-ethyl)-8,8-d ⁇ methyl-8-azon ⁇ a- b ⁇ cyclo[3 2 1]octane iodide,
• Suitable antihistamines include any one or more of the numerous antagonists known which inhibit H-i-receptors, and are safe for human use
• First generation antagonists include derivatives of ethanolamines, ethylenediamines, and alkylamines, e g diphenylhydramine, py ⁇ lamine, clemastine, chloropheniramine
• Second generation antagonists which are non-sedating, include loratidine, deslorat ⁇ d ⁇ ne,terfenad ⁇ ne,astem ⁇ zole,acr ⁇ vast ⁇ ne, azelastine, levocetirizine fexofenadine and cetirizine
• Examples of preferred anti-histamines include loratidine, desloratidine, fexofenadine and cetirizine
• the biocompatible polymer comprising one or more compounds of formula (II) is considered to have good surfactant properties These surfactant properties may include reducing the deposition on the internal surfaces of the can thereby increasing the amount of drug that comes through the valve, stabilising, enhancing and reducing variability in the fine particle fraction (FPF), giving good content uniformity performance by reducing variability in delivered dose uniformity and reducing the product overage required to achieve the delivered dose
• the biocompatible polymer comprising one or more compounds of formula (II) in the formulations of the present invention is considered to be advantageous in terms of improving the stability of the aerosol formulation by reducing drug deposition, increasing shelf life and the like
• a pharmaceutical aerosol formulation wherein the particulate medicament of formula (I) is 6 ⁇ , 9 ⁇ -d ⁇ fluoro-17 ⁇ -[(2- furanylcarbonyl)oxy]-11 ⁇ -hydroxy-16 ⁇ -methyl-3-oxo-androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester
• a pharmaceutical aerosol formulation wherein the particulate medicament of formula (I) is in unsolvated form
• a pharmaceutical aerosol formulation wherein the particulate medicament of formula (I) is in the form of Form 1 polymorph
• WO02/12265 and WO02/12266 disclose compounds of formula (I), including solvates, unsolvated Forms and Form 1 polymorphs, these applications are incorporated herein by reference
• a pharmaceutical aerosol formulation as described hereinbefore further comprising 3-(4- ⁇ [6-( ⁇ (2R)-2-hydroxy-2-[4-hydroxy-3- (hydroxymethyl)phenyl]ethyl ⁇ am ⁇ no)hexyl] oxy ⁇ butyl) benzenesulfonamide
• a pharmaceutical aerosol formulation as described hereinbefore further comprising 3-(3- ⁇ [7-( ⁇ (2R)-2-hydroxy-2-[4-hydroxy-3- hydroxymethyl) phenyl] ethyl ⁇ -am ⁇ no) heptyl] oxy ⁇ propyl) benzenesulfonamide
• a pharmaceutical aerosol formulation as described hereinbefore further comprising N-[2-hydroxyl-5-[(1R)-1-hydroxy-2-[[2-4- [[(2R)-2-hydroxy-2-phenylethyl]am ⁇ no]phenyl]ethyl]am ⁇ no]ethyl]phenyl]formam ⁇ de
• a pharmaceutical aerosol formulation as described hereinbefore further comprising N- ⁇ 2-[4-(3-phenyl-4- methoxyphenyl)am ⁇ nophenyl]ethyl ⁇ -2-hydroxy-2-(8-hydroxy-2(1H)-qu ⁇ nol ⁇ non-5- yl)ethylam ⁇ ne
• a pharmaceutical aerosol formulation as described hereinbefore further comprising 5-[(R)-2-(2- ⁇ 4-[4-(2-am ⁇ no-2-methyl-propoxy)- phenylam ⁇ no]-phenyl ⁇ -ethylam ⁇ no)-1-hydroxy-ethyl]-8-hydroxy-1 H-qu ⁇ nol ⁇ n-2-one
• the biocompatible polymer comprising one or more compounds of formula (II) may be prepared by a number of reaction methods, such as those disclosed in WO94/21229 and WO98/34596
• lactic acid may be polymerised via condensation followed by capping the hydroxyl end of the polymer with an acetyl capping group
• Ethylenediamine can then be coupled to the oligolactic acid via condensation and formation of an amide
• the reaction method provides for degrees of completion such that the molar ratio of unreacted oligolactic acid and oligolactic acid derivatives having a free hydroxyl is less than 10%, less than 5%, or less than 1% of the amount of N,N'-ethyleneb ⁇ s (acetyloligolactyl) amide prepared
• the reaction method also provides for degrees of completion such that the molar ratio of unreacted oligolactic acid and oligolactic acid derivatives having a free carboxy
• the amount of biocompatible polymer employed is desirably in the range of from 0 0025% to 3% w/w, particularly from 0 01 % to 0 5% w/w, more particularly from 0 05% to 0 2% w/w, relative to the propellant
• the particle size of the particulate (e g micronised) medicament should be such as to optimise the amount of the medicament inhaled into the lungs upon administration of the aerosol formulation and will thus be less than 100 microns, desirably less than 20 microns, and preferably will have a MMAD (mass median aerodynamic diameter) in the range 1-10 microns, e g 1-5 microns
• the final aerosol formulation desirably contains 0 005-10% w/w, preferably 0 005 - 5% w/w, especially 0 01-1 0% w/w, of medicament relative to the total weight of the formulation
• Administration of medicament may be indicated for the treatment of mild, moderate or severe acute or chronic symptoms or for prophylactic treatment It will be appreciated that the precise dose administered will depend on the age and condition of the patient, the particular particulate medicament used and the frequency of administration and will ultimately be at the discretion of the attendant physician When combinations of medicaments are employed the dose of each component of the combination will in general be that employed for each component when used alone Typically, administration may be one or more times, for example from 1 to 8 times per day, giving for example 1 , 2, 3 or 4 puffs each time Suitable daily doses, may be, for example in the range 25 to 800 microgram for a compound of formula (I), 5 to 20 microgram for Compound B, 10 to 50 microgram for Compound C, depending on the severity of the disease
• each filled canister for use in a metered dose inhaler contains 100, 160 or 240 metered doses or puffs of medicament
• a single propellant is employed, for example, 1 ,1 ,1 ,2- tetrafluoroethane or 1 ,1 ,1 ,2,3,3,3-heptafluoro-n-propane, suitably 1 ,1 ,1 ,2- tetrafluoroethane
• the formulations of the invention contain no components which may provoke the degradation of stratospheric ozone
• the formulations are substantially free of chlorofluorocarbons such as CCI3F, CCI 2 F 2 and CF 3 CCI 3
• the propellant may additionally contain a volatile adjuvant such as a saturated hydrocarbon, for example, propane, n-butane, isobutane, pentane and isopentane or a dialkyl ether, for example, dimethyl ether
• a volatile adjuvant such as a saturated hydrocarbon, for example, propane, n-butane, isobutane, pentane and isopentane or a dialkyl ether, for example, dimethyl ether
• a volatile adjuvant such as a saturated hydrocarbon, for example, propane, n-butane, isobutane, pentane and isopentane or a dialkyl ether, for example, dimethyl ether
• up to 50% w/w of the propellant may comprise a volatile hydrocarbon, for example, 1 to 30% w/w
• formulations which are substantially free of volatile adjuvants may be preferred
• Polar adjuvants which may, if desired, be incorporated into the formulation according to the present invention include, for example, C 2 - 6 al ⁇ phat ⁇ c alcohols and polyols such as ethanol, isopropanol and propylene glycol and mixtures thereof Typically ethanol will be employed In general only small quantities (e g from 0 05 to 3 0% w/w) of polar adjuvants are required and the use of quantities in excess of 5% w/w may disadvantageous ⁇ tend to dissolve the medicament
• Formulations preferably contain less than 1 % w/w, for example, about 0 1 % w/w of polar adjuvant
• the formulations according to the invention are substantially free of polar adjuvant Polarity may be determined, for example, by the method described in European Patent Application Publication No 0327777
• the formulations may be substantially free of (1 ) volatile adjuvants, for example, saturated hydrocarbons such as, without limitation, propane, n- butane, isobutane
• the formulation according to the present invention may optionally contain one or more further ingredients conventionally used in the art of pharmaceutical aerosol formulation
• optional ingredients include, but are not limited to, taste masking agents, sugars, buffers, antioxidants, water and chemical stabilisers
• a further embodiment of the invention is a sealed container capable of withstanding the pressure required to maintain the propellant as a liquid, such as a metered dose inhaler, containing therein the aerosol formulation as described above
• metered dose inhaler means a unit comprising a can, a secured cap covering the can and a formulation metering valve situated in the cap MDI system includes a suitable channelling device Suitable channelling devices comprise for example, a valve actuator and a cylindrical or cone-like passage through which medicament may be delivered from the filled canister via the metering valve to the nose or mouth of a patient such as a mouthpiece actuator
• MDI cans generally comprise a container capable of withstanding the vapour pressure of the propellant used such as a plastic or plastic-coated glass bottle or preferably a metal can, for example, stainless steel, aluminium or an alloy thereof which may optionally be anodised, lacquer-coated and/or plastic-coated (e g incorporated herein by reference WO96/32099 wherein part or all of the internal surfaces are coated with one or more fluorocarbon polymers optionally in combination with one or more non-fluorocarbon polymers), which container is closed with a metering valve
• the cap may be secured onto the can via ultrasonic welding, screw fitting or crimping MDIs taught herein may be prepared by methods of the art (e g , see Byron, above and WO96/32099)
• the canister is fitted with a cap assembly, wherein a drug metering valve is situated in the cap, and said cap is crimped in place
• the metallic internal surface of the can is coated with a fluoropolymer, most preferably blended with a non-fluoropolymer
• the metallic internal surface of the can is coated with a polymer blend of polytetrafluoroethylene (PTFE) and polyethersulfone (PES)
• the whole of the metallic internal surface of the can is coated with a polymer blend of polytetrafluoroethylene (PTFE) and polyethersulfone (PES)
• Formulations according to the present invention may obviate the need for the additional processing of the canisters and/or component by coating, for example, which may lead to cost saving, especially when manufacturing in bulk
• the metering valves are designed to deliver a metered amount of the formulation per actuation and may incorporate a gasket to prevent leakage of propellant through the valve
• the gasket may comprise any suitable elastomeric material such as, for example, low density polyethylene, chlorobutyl, bromobutyl, EPDM, black and white butadiene- acrylonitnle rubbers, butyl rubber and neoprene
• Suitable valves are commercially available from manufacturers well known in the aerosol industry, for example, from Valois, France (e g DF10, DF30, DF60), Bespak pic, UK (e g BK300, BK357) and 3M- Neotechnic Ltd, UK (e g SpraymiserTM)
• the MDIs may also be used in conjunction with other structures such as, without limitation, overwrap packages for storing and containing the MDIs, including those described in U S Patent No 6,119,853, 6,179,118, 6,315,112, 6,352,152, 6,390,291 , 6,679,374, as well as dose counter units such as, but not limited to, those described in U S Patent Nos 6,360,739 and 6,431 ,168
• the formulations of the invention may be prepared by dispersal of the medicament of formula (I) and the biocompatible polymer of formula (II) in the propellant in an appropriate container, for example, with the aid of sonication or a high-shear mixer This process is desirably carried out under controlled humidity conditions
• a further aspect of this invention comprises a process for filling the said formulation into MDIs
• a metering valve is crimped onto an aluminium can to form an empty canister
• the particulate medicament is added to a charge vessel and liquefied propellant is pressure filled through the charge vessel into a manufacturing vessel, together with liquefied propellant containing the surfactant
• the drug suspension is mixed before recirculation to a filling machine and an aliquot of the drug suspension is then filled through the metering valve into the canister
• an aliquot of the liquefied formulation is added to an open canister under conditions which are sufficiently cold to ensure formulation does not vaporise, and then a metering valve crimped onto the canister
• each filled canister is check- weighed, coded with a batch number and packed into a tray for storage before release testing
• Each filled canister is conveniently fitted into a suitable channelling device prior to use to form a metered dose inhaler system for administration of the medicament into the lungs or nasal cavity of a patient
• the chemical and physical stability and the pharmaceutical acceptability of the aerosol formulations according to the invention may be determined by techniques well known to those skilled in the art
• the chemical stability of the components may be determined by HPLC assay, for example, after prolonged storage of the product
• Physical stability data may be gained from other conventional analytical techniques such as, for example, by leak testing, by valve delivery assay (average shot weights per actuation), by dose reproducibility assay (active ingredient per actuation) and spray distribution analysis
• the fine particle fraction of the aerosol formulations according to the invention may be measured by conventional techniques, for example, by cascade impaction by measuring particle size distribution
• the Cascade lmpactor is designed to mimic the human buccal cavity and bronchial tract and the cascade lmpactor test is designed to reveal the amount of deposition of inhaled drug substance at various stages thereof
• cascade impaction means determination of the deposition of the emitted dose in pressurised inhalations as defined in European Pharmacopoeia, Section 2 9 18, 5 th
• Metered dose inhalers are designed to deliver a fixed unit dosage of medicament per actuation or "puff", for example, in the range of 10 to 5000 micrograms of medicament per puff
• Administration of medicament may be indicated for the treatment of mild, moderate, severe acute or chronic symptoms or for prophylactic treatment It will be appreciated that the precise dose administered will depend on the age and condition of the patient, the particular particulate medicament used and the frequency of administration and will ultimately be at the discretion of the attendant physician When combinations of medicaments are employed the dose of each component of the combination will in general be that employed for each component when used alone Typically, administration may be one or more times, for example, from 1 to 8 times per day, giving for example 1 , 2, 3 or 4 puffs each time
• Another aspect of the invention involves the use of biocompatible polymer of formula (II) to enhance the FPF or reduce the variability in the content uniformity, for example, by reducing the relative standard deviation (RDS) of the individual emitted dose
• the dose collection apparatus (500ml separatory funnel with a cotton plug) was assembled and the flow rate was set to 20L/m ⁇ n Test units were stored at ambient conditions for two weeks after manufacture prior to DTU testing
• the MDIs were primed two times with a priming actuator and four times to waste with the test actuator, shaking the units between each actuation
• Two test actuations were collected in the dose collection apparatus, shaking the unit between actuations
• the collection apparatus was rinsed with an appropriate volume of diluent, and the rinsate with the collected dose was analyzed by conventional HPLC analysis
• the MDIs were actuated an additional 48 times to waste, shaking between each actuation
• the MDIs were then actuated four times to waste through a new test actuator
• Two test actuations were then collected in the dose collection apparatus, shaking the unit between actuations
• the collection apparatus was rinsed with an appropriate volume of diluent, and the rinsate with the collected dose was analyzed by conventional HPLC analysis
• ACI Andersen Cascade lmpactor Method Procedures The Andersen Cascade lmpactor Mark Il (ACI) was assembled and the flow rate was set to 28 3 L/min The units were primed four times with the test actuator prior to dose collection, shaking between actuations Between 5 and 20 actuations were collected in the ACI assembly The ACI was disassembled and the components were rinsed with an appropriate amount of solvent that ensures dissolution of all formulation ingredients The rinsate was collected for analysis by conventional HPLC analysis
• test compounds were as follows.
• the cold-filling equipment which comprises a stainless steel batching vessel with an air- driven mixer and filling valve, was assembled
• the propellant was chilled to about -60°C
• the batching vessel was chilled to at least -30°C and about half of the total chilled propellant was added
• the propellant was allowed to reach at least -50°C
• 1 3013g of the biocompatible polymer comprising compounds of formula (II) was added for a concentration of 0 1 % w/w relative to propellant followed by addition of 04294g of 6 ⁇ , ⁇ -difluoro-i/ ⁇ -p-furanylcarbonylJoxyl-H ⁇ -hydroxy-i ⁇ -methyl-S-oxo- androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester powder
• the remaining cold propellant was then added up to the total weight of 1299 g of HFA 134a, and the containers rinsed to ensure all the powders were added
• the suspension was
• Comparative surfactant-free formulations were prepared as generally described above with the exception that no biocompatible polymer of formula (II) was added to the formulation
• Table 1 shows the overall mean dose of medicament delivered through the actuator, combining beginning and end of use doses
• the target output of drug is 22 5 ⁇ g/act (assuming 10% actuator deposition)
• Fine Particle Fraction -Compound A MDI, HFA 134a, 25nq/act, 60 actuations
• the cold-filling equipment which comprises a stainless steel batching vessel with an air- driven mixer and filling valve, was assembled
• the propellant was chilled to about -60°C
• the batching vessel was chilled to at least -30°C and about half of the total chilled propellant was added
• the propellant was allowed to reach at least -50°C
• 1 0379g of the biocompatible polymer comprising compounds of formula (II) was added for a concentration of 0 1 % w/w relative to propellant, followed by the addition of 0 3564g of 6 ⁇ , ⁇ -difluoro-i/ ⁇ -p-furanylcarbonylJoxyJ-H ⁇ -hydroxy-i ⁇ -methyl-S-oxo- androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester powder and 0 1539g of N-[2- hydroxy-5-[(1 R)-1 -hydroxy-2-[[2-4-[[(2R)-2-hydroxy-2-
• Comparative surfactant-free formulations were prepared as generally described above with the exception that no biocompatible polymer of formula (II) was added to the formulation
• Table 4 shows the overall mean dose of medicament delivered through the actuator, combining beginning and end of use doses
• the target output of Compound B is 8 5 ⁇ g (assuming 15% actuator deposition)
• the target output of Compound A is 22 5 ⁇ g (assuming 10% actuator deposition)
• Fine Particle Fraction - Compound A in combination with a Compound B Fine Particle Fraction - Compound A in combination with a Compound B. MDI. HFA 134a. 25nq/act, 60 actuations
• Table 6 shows the Fine Particle Fraction expressed as a percentage of the total dose target, for Compound B, 10 ⁇ g and for the Compound A, 25 ⁇ g
• Example 3 Compound A in combination with Compound C. MDI. 25/12.5uq/act, 60 actuations
• the cold-filling equipment which consists of a stainless steel batching vessel with an air- driven mixer and filling valve, was assembled
• the propellant was chilled to about -60°C
• the batching vessel was chilled to at least -30°C and about half of the total chilled propellant was added
• the propellant was allowed to reach at least -50°C
• 1 8037g of the biocompatible polymer comprising compounds of formula (II) was added followed by addition of 0 5944g of 6 ⁇ , 9 ⁇ -d ⁇ fluoro-17 ⁇ -[(2-furanylcarbonyl)oxy]-11 ⁇ - hydroxy-16 ⁇ -methyl-3-oxo-androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester powder and 0 3786g of 3-(4- ⁇ [6-( ⁇ (2R)-2-hydroxy-2-[4-hydroxy-3-(hydroxymethyl
• Table 7 shows the overall mean dose of medicament delivered through the actuator, combining beginning and end of use doses
• the target output of Compound C is 11 3 ⁇ g (assuming 10% actuator deposition)
• the target output of Compound A is 22 5 ⁇ g (assuming 10% actuator deposition)
• Table 9 shows the Fine Particle Fraction (FPF) expressed as a percentage of the total dose target, for Compound C, 12 5 ⁇ g and for Compound A, 25 ⁇ g
• Example 4 Compound A in combination with Compound D. MD1 100/100 u ⁇ /act. 60 actuations
• the cold-filling equipment which consists of a stainless steel batching vessel with an air- driven mixer and filling valve, was assembled The propellant was chilled to about -60°C The batching vessel was chilled to at least -30°C and about half of the total chilled propellant was added The propellant was allowed to reach at least -50°C With the mixer running, 4 3119g of the biocompatible polymer comprising compounds of formula (II) was added followed by addition of 5 6562g of 6 ⁇ , 9 ⁇ -d ⁇ fluoro-17 ⁇ -[(2-furanylcarbonyl)oxy]-11 ⁇ - hydroxy-16 ⁇ -methyl-3-oxo-androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester powder and 9 009Og of 4- ⁇ (1R)-2-[(6- ⁇ 2-[(2, 6-d ⁇ chlorobenzyl) oxy] ethoxy ⁇ hexyl) amino]- 1-hydroxyethyl ⁇ -2-(hydroxymethyl) phenol powder
• Table 10 shows the overall mean dose delivered through the actuator, combining beginning and end of use
• the target output of compound D is 90 ⁇ g (assuming 10% actuator deposition)
• the target output of compound A is 90 ⁇ g (assuming 10% actuator deposition)
• Table 12 shows the Fine Particle Fraction (FPF) expressed as a percentage of the total dose target, for Compound D, 100 ⁇ g, and for Compound A, 100 ⁇ g
• Example 5 Compound A in combination with Compound E. MD1 100/50 uq/act. 60 actuations
• the cold-filling equipment which consists of a stainless steel batching vessel with an air- driven mixer and filling valve, was assembled The propellant was chilled to about -60°C The batching vessel was chilled to at least -30°C and about half of the total chilled propellant was added The propellant was allowed to reach at least -50°C With the mixer running, 3 7025g of the biocompatible polymer comprising compounds of formula (II) was added followed by addition of 24286g of 6 ⁇ , 9 ⁇ -d ⁇ fluoro-17 ⁇ -[(2-furanylcarbonyl)oxy]-11 ⁇ - hydroxy-16 ⁇ -methyl-3-oxo-androsta-1 ,4-d ⁇ ene-17 ⁇ -carboth ⁇ o ⁇ c acid S-fluoromethyl ester powder and 6 9699g of N- ⁇ 2-[4-(3-phenyl-4-methoxyphenyl)am ⁇ nophenyl]ethyl ⁇ -2-hydroxy- 2-(8-hydroxy-2(1H)-qu ⁇ nol ⁇ non-5-yl
• Table 13 shows the overall mean dose delivered through the actuator, combined beginning and end of use
• the target output of Compound E is 90 ⁇ g (assuming 10% actuator deposition)
• the target output of Compound A is 45 ⁇ g (assuming 10% actuator deposition)
• Table 15 shows the Fine Particle Fraction (FPF) expressed as percentage of the total dose target of Compound E, 100 ⁇ g and for Compound A, 50 ⁇ g

Landscapes

• Health & Medical Sciences (AREA)
• Chemical & Material Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• Medicinal Chemistry (AREA)
• Animal Behavior & Ethology (AREA)
• Pharmacology & Pharmacy (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Epidemiology (AREA)
• Pulmonology (AREA)
• Rheumatology (AREA)
• Pain & Pain Management (AREA)
• Otolaryngology (AREA)
• Immunology (AREA)
• Medicinal Preparation (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
• Steroid Compounds (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38523271

Family Applications (1)

Country Status (18)

Families Citing this family (2)

Family Cites Families (3)

• 2007
  • 2007-03-21 EA EA200801854A patent/EA200801854A1/ru unknown
  • 2007-03-21 AR ARP070101155A patent/AR060039A1/es not_active Application Discontinuation
  • 2007-03-21 WO PCT/US2007/064462 patent/WO2007109698A2/en active Application Filing
  • 2007-03-21 BR BRPI0708798-5A patent/BRPI0708798A2/pt not_active IP Right Cessation
  • 2007-03-21 AU AU2007226899A patent/AU2007226899A1/en not_active Abandoned
  • 2007-03-21 MX MX2008011967A patent/MX2008011967A/es not_active Application Discontinuation
  • 2007-03-21 PE PE2007000310A patent/PE20080124A1/es not_active Application Discontinuation
  • 2007-03-21 KR KR1020087025825A patent/KR20080110854A/ko not_active Application Discontinuation
  • 2007-03-21 CA CA002646236A patent/CA2646236A1/en not_active Abandoned
  • 2007-03-21 JP JP2009501708A patent/JP2009530419A/ja active Pending
  • 2007-03-21 EP EP07758963A patent/EP2012797A2/en not_active Withdrawn
  • 2007-03-21 CN CNA2007800098351A patent/CN101415428A/zh active Pending
  • 2007-03-21 TW TW096109797A patent/TW200803870A/zh unknown
• 2008
  • 2008-08-27 IL IL193723A patent/IL193723A0/en unknown
  • 2008-08-28 CR CR10261A patent/CR10261A/es not_active Application Discontinuation
  • 2008-09-01 NO NO20083760A patent/NO20083760L/no not_active Application Discontinuation
  • 2008-09-05 ZA ZA200807682A patent/ZA200807682B/xx unknown
  • 2008-10-07 MA MA31274A patent/MA30328B1/fr unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events