WO2007014454A1 - Ep4 receptor agonist, compositions and methods thereof - Google Patents
Ep4 receptor agonist, compositions and methods thereof Download PDFInfo
- Publication number
- WO2007014454A1 WO2007014454A1 PCT/CA2006/001243 CA2006001243W WO2007014454A1 WO 2007014454 A1 WO2007014454 A1 WO 2007014454A1 CA 2006001243 W CA2006001243 W CA 2006001243W WO 2007014454 A1 WO2007014454 A1 WO 2007014454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oxazinan
- oxo
- difluoro
- thiophene
- propyl
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
- A61P19/10—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease for osteoporosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
- A61P27/04—Artificial tears; Irrigation solutions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
- A61P27/06—Antiglaucoma agents or miotics
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- 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
Definitions
- Glaucoma is a degenerative disease of the eye wherein the intraocular pressure is too high to permit normal eye function. As a result, damage may occur to the optic nerve head and result in irreversible loss of visual function. If untreated, glaucoma may eventually lead to blindness. Ocular hypertension, i.e., the condition of elevated intraocular pressure without optic nerve head damage or characteristic glaucomatous visual field defects, is now believed by the majority of ophthalmologists to represent merely the earliest phase in the onset of glaucoma.
- disorders in humans and other mammals involve or are associated with abnormal or excessive bone loss.
- Such disorders include, but are not limited to, osteoporosis, glucocorticoid induced osteoporosis, Paget's disease, abnormally increased bone turnover, periodontal disease, tooth loss, bone fractures, rheumatoid arthritis, periprosthetic osteolysis, osteogenesis imperfecta, metastatic bone disease, hypercalcemia of malignancy, and multiple myeloma.
- osteoporosis which in its most frequent manifestation occurs in postmenopausal women.
- Prostaglandins such as the PGE2 series are known to stimulate bone formation and increase bone mass in mammals, including man.
- EP4 The major prostaglandin receptor in bone is EP4, which is believed to provide its effect by signaling via cyclic AMP.
- formula I agonists of the EP4 subtype receptor are useful for stimulating bone formation.
- WO 02/24647, WO 02/42268, EP 1114816, WO 01/46140 and WO 01/72268 disclose EP4 agonists. However, they do not disclose the compounds of the instant invention.
- This invention relates to agonists of the EP4 subtype of prostaglandin E2 receptors and their use or a formulation thereof in the treatment of glaucoma and other conditions that are related to elevated intraocular pressure in the eye of a patient.
- this invention relates to a series of 3,4- disubstituted l,3-oxazinan-2-one, derivatives and their use to treat ocular diseases and to provide a neuroprotective effect to the eye of mammalian species, particularly humans.
- This invention further relates to the use of the compounds of this invention for mediating the bone modeling and remodeling processes of the osteoblasts and osteoclasts.
- this invention relates to novel EP4 agonist having the structural formula I:
- R and R4 independently represent H, or Ci-6 alkyl
- Rl independently represents hydrogen, Ci_6 alkyl, halogen, CF3, aryl, said aryl optionally substituted with 1 to 3 groups of halogen, Cl -6 alkyl, CF3, or N(R4)2 ;
- R2 represents H, or halogen;
- R3 represents COOR or carboxylic acid isostere;
- n represents 0-3; and
- — represents a double or single bond.
- therapeutically effective amount means that amount of the EP4 receptor subtype agonist of formula I, or other actives of the present invention, that will elicit the desired therapeutic effect or response or provide the desired benefit when administered in accordance with the desired treatment regimen.
- a preferred therapeutically effective amount relating to the treatment of abnormal bone resorption is a bone formation, stimulating amount.
- a preferred therapeutically effective amount relating to the treatment of ocular hypertension or glaucoma is an amount effective for reducing intraocular pressure and/or treating ocular hypertension and/or glaucoma.
- “Pharmaceutically acceptable” as used herein means generally suitable for administration to a mammal, including humans, from a toxicity or safety standpoint.
- the term “prodrug” refers to compounds which are drug precursors which, following administration and absorption, release the claimed drug in vivo via some metabolic process.
- a non- limiting example of a prodrug of the compounds of this invention would be an ester of the carboxylic acid group, where the ester functionality is easily hydrolyzed to the active acid after administration to a patient.
- Exemplary prodrugs include acetic acid derivatives that are non-narcotic, analgesics/non- steroidal, anti-inflammatory drugs having a free CH2COOH group (which can optionally be in the form of a pharmaceutically acceptable salt, e.g. -CH2COO-Na+), typically attached to a ring system, preferably to an aromatic or heteroaromatic ring system.
- acetic acid derivatives that are non-narcotic, analgesics/non- steroidal, anti-inflammatory drugs having a free CH2COOH group (which can optionally be in the form of a pharmaceutically acceptable salt, e.g. -CH2COO-Na+), typically attached to a ring system, preferably to an aromatic or heteroaromatic ring system.
- alkyl refers to a monovalent alkane (hydrocarbon) derived radical containing from 1 to 6 carbon atoms unless otherwise defined. It may be straight, branched or cyclic. Preferred alkyl groups include methyl, ethyl, propyl, isopropyl, butyl, t-butyl, cyclopentyl and cyclohexyl. When the alkyl group is said to be substituted with an alkyl group, this is used interchangeably with "branched alkyl group”.
- Cycloalkyl is a species of alkyl containing from 3 to 6 carbon atoms, without alternating or resonating double bonds between carbon atoms.
- Examples of cycloalkyl groups are cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl.
- Halogen refers to chlorine, fluorine, iodine or bromine.
- Carboxylic isostere represents tetrazole, acylsulfonamide, sulfonic acid, phosphonic acid or prodrug such as C]-6 aldehyde or C ⁇ g alcohol.
- Aryl refers to aromatic rings e.g., phenyl, substituted phenyl and the like, as well as rings which are fused, e.g., naphthyl, phenanthrenyl and the like.
- An aryl group thus contains at least one ring having at least 6 atoms, with up to five such rings being present, containing up to 22 atoms therein, with alternating (resonating) double bonds between adjacent carbon atoms or suitable heteroatoms.
- aryl groups are phenyl, naphthyl, tetrahydronaphthyl, indanyl, biphenyl, phenanthryl, anthryl or acenaphthyl and phenanthrenyl, preferably phenyl, naphthyl or phenanthrenyl.
- Aryl groups may likewise be substituted as defined.
- Preferred substituted aryls include phenyl and naphthyl.
- agonist means EP4 subtype compounds of formula I interact with the EP4 receptor to produce maximal, super maximal or submaximal effects compared to the natural agonist, PGE2. See Goodman and Gilman, The Pharmacological Basis of Therapeutics, 9 th edition, 1996, chapter 2.
- R3 is a carboxylic acid isostere and all other variables are as originally defined.
- R is Ci -6 alkyl and all other variables are as originally defined.
- a sub-embodiment of this invention is realized when R is isopropyl, ethyl or, methyl, preferably isopropyl.
- R2 is halogen and all other variables are as originally defined.
- a subembodiment of this invention is realized when halogen is fluorine or bromine.
- Still another embodiment of this invention is realized when Ri is halogen and all other variables are as originally defined.
- a sub-embodiment is realized when Ri is bromine or chlorine, preferably bromine.
- Still another embodiment of this invention is realized when Ri is Ci -6 alkyl and all other variables are as originally defined.
- Still another embodiment of this invention is realized when Ri is CF3 and all other variables are as originally defined.
- R3 is COOR, R is H or isopropyl, Rl is bromine and R2 is hydrogen.
- R3 is tetrazole, Ri is bromine and R2 is hydrogen
- Another embodiment of this invention is reaslized when n is 0, 1, or 2 and all other variables are as originally defined. Still another embodiment of this invention is realized when n is 0 and all other variables are as originally defined
- Another embodiment of this invention is realized when n is 1 and all other variables are as originally defined.
- a subembodiment of this invention is realizedwhen Rj is bromine and R.2 is hydrogen.
- Another embodiment of this invention is realized when — represents a double bond.
- Compounds of this invention are: Isopropyl S-CS-K ⁇ H-Kl ⁇ S ⁇ -CS-bromophenylH ⁇ -difluoro-S-hydroxybut-l-en-l-y ⁇ -oxo-US- oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylate;
- Another embodiment of this invention is directed to a composition containing an EP4 agonist of Formula I and optionally a pharmaceutically acceptable carrier.
- Yet another embodiment of this invention is directed to a method for decreasing elevated intraocular pressure or treating glaucoma by administration, preferably topical or intra-camaral administration, of a composition containing an EP4 agonist of Formula I and optionally a pharmaceutically acceptable carrier.
- a composition containing an EP4 agonist of Formula I and optionally a pharmaceutically acceptable carrier.
- Use of the compounds of formula I for the manufacture of a medicament for treating elevated intraocular pressure or glaucoma or a combination thereof is also included in this invention
- This invention is further concerned with a process for making a pharmaceutical composition comprising a compound of formula I.
- This invention is further concerned with a process for making a pharmaceutical composition
- a pharmaceutical composition comprising a compound of formula I, and a pharmaceutically acceptable carrier.
- the claimed compounds bind strongly and act on PGE2 receptor, particularly on the EP4 subtype receptor and therefore are useful for preventing and/or treating glaucoma and ocular hypertension.
- Dry eye is a common ocular surface disease afflicting millions of people. Although it appears that dry eye may result from a number of unrelated pathogenic causes, the common end result is the breakdown of the tear film, which results in dehydration of the exposed outer surface of the eye. (Lemp, Report of the National Eye Institute/Industry Workshop on Clinical Trials in Dry Eyes, The CLAO Journel, 21(4):221-231 (1995)).
- Macular edema is swelling within the retina within the critically important central visual zone at the posterior pole of the eye. It is believed that EP4 agonist which lower IOP are useful for treating diseases of the macular such as macular edema or macular degeneration.
- another aspect of this invention is a method for treating macular edema or macular degeneration.
- Glaucoma is characterized by progressive atrophy of the optic nerve and is frequently associated with elevated intraocular pressure (IOP). It is possible to treat glaucoma, however, without necessarily affecting IOP by using drugs that impart a neuroprotective effect. See Arch. Ophthalmol. Vol. 112, Jan 1994, pp. 37-44; Investigative Ophthamol. & Visual Science, 32, 5, April 1991 , pp.
- EP4 agonist which lower IOP are useful for providing a neuroprotective effect. They are also believed to be effective for increasing retinal and optic nerve head blood velocity and increasing retinal and optic nerve oxygen by lowering IOP, which when coupled together benefits optic nerve health. As a result, this invention further relates to a method for increasing retinal and optic nerve head blood velocity, or increasing retinal and optic nerve oxygen tension or providing a neuroprotective effect or a combination thereof by using an EP4 agonist of formula I.
- compositions which may be administered to mammals, including humans, to achieve effective IOP lowering are readily combined with suitable and known pharmaceutically acceptable excipients to produce compositions which may be administered to mammals, including humans, to achieve effective IOP lowering.
- this invention is also concerned with compositions and methods of treating ocular hypertension, glaucoma, macular edema, macular degeneration, for increasing retinal and optic nerve head blood velocity, for increasing retinal and optic nerve oxygen tension, for providing a neuroprotective effect or for a combination thereof by administering to a patient in need thereof one of the compounds of formula I alone or in combination with one or more of the following active ingredients, a ⁇ -adrenergic blocking agent such as timolol, betaxolol, levobetaxolol, carteolol, levobunolol, a parasympathomimetic agent such as pilocarpine, a sympathomimetic agents such as epinephrine, iopidine,
- the EP4 agonist used in the instant invention can be administered in a therapeutically effective amount intravaneously, subcutaneously, topically, transdermally, parenterally or any other method known to those skilled in the art.
- Ophthalmic pharmaceutical compositions are preferably adapted for topical administration to the eye in the form of solutions, suspensions, ointments, creams or as a solid insert.
- Ophthalmic formulations of this compound may contain from 0.00001 to 5% and especially 0.00001 to 0.1% of medicament. Higher dosages as, for example, up to about 10% or lower dosages can be employed provided the dose is effective in reducing intraocular pressure, treating glaucoma, increasing blood flow velocity or oxygen tension.
- For a single dose from between 0.0000001 to 0.05 mg, preferably 0.0000005 to 0.02 mg, and especially 0.000005 to 0.01 mg of the compound can be applied to the human eye.
- the pharmaceutical preparation which contains the compound may be conveniently admixed with a non-toxic pharmaceutical organic carrier, or with a non-toxic pharmaceutical inorganic carrier.
- a non-toxic pharmaceutical organic carrier or with a non-toxic pharmaceutical inorganic carrier.
- pharmaceutically acceptable carriers are, for example, water, mixtures of water and water-miscible solvents such as lower alkanols or aralkanols, vegetable oils, peanut oil, polyalkylene glycols, petroleum based jelly, ethyl cellulose, ethyl oleate, carboxymethyl-cellulose, polyvinylpyrrolidone, isopropyl myristate and other conventionally employed acceptable carriers.
- the pharmaceutical preparation may also contain non-toxic auxiliary substances such as emulsifying, preserving, wetting agents, bodying agents and the like, as for example, polyethylene glycols 200, 300, 400 and 600, carbowaxes 1,000, 1,500, 4,000, 6,000 and 10,000, antibacterial components such as quaternary ammonium compounds, phenylmercuric salts known to have cold sterilizing properties and which are non-injurious in use, thimerosal, methyl and propyl paraben, benzyl alcohol, phenyl ethanol, buffering ingredients such as sodium borate, sodium acetates, gluconate buffers, and other conventional ingredients such as sorbitan monolaurate, triethanolamine, oleate, polyoxyethylene sorbitan monopalmitylate, dioctyl sodium sulfosuccinate, monothioglycerol, thiosorbitol, ethylenediamine tetracetic acid, and the like.
- auxiliary substances such as e
- suitable ophthalmic vehicles can be used as carrier media for the present purpose including conventional phosphate buffer vehicle systems, isotonic boric acid vehicles, isotonic sodium chloride vehicles, isotonic sodium borate vehicles and the like.
- the pharmaceutical preparation may also be in the form of a microparticle formulation.
- the pharmaceutical preparation may also be in the form of a solid insert. For example, one may use a solid water soluble polymer as the carrier for the medicament.
- the polymer used to form the insert may be any water soluble non-toxic polymer, for example, cellulose derivatives such as methylcellulose, sodium carboxymethyl cellulose, (hydroxyloweralkyl cellulose), hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose; acrylates such as polyacrylic acid salts, ethylacrylates, polyactylamides; natural products such as gelatin, alginates, pectins, tragacanth, karaya, chondrus, agar, acacia; the starch derivatives such as starch acetate, hydroxymethyl starch ethers, hydroxypropyl starch, as well as other synthetic derivatives such as polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methyl ether, polyethylene oxide, neutralized carbopol and xanthan gum, gellan gum, and mixtures of said polymer.
- Suitable subjects for the administration of the formulation of the present invention include
- the pharmaceutical preparation may contain non-toxic auxiliary substances such as antibacterial components which are non-injurious in use, for example, thimerosal, benzalkonium chloride, methyl and propyl paraben, benzyldodecinium bromide, benzyl alcohol, or phenylethanol; buffering ingredients such as sodium chloride, sodium borate, sodium acetate, sodium citrate, or gluconate buffers; and other conventional ingredients such as sorbitan monolaurate, triethanolamine, polyoxyethylene sorbitan monopalmitylate, ethylenediamine tetraacetic acid, and the like.
- auxiliary substances such as antibacterial components which are non-injurious in use, for example, thimerosal, benzalkonium chloride, methyl and propyl paraben, benzyldodecinium bromide, benzyl alcohol, or phenylethanol
- buffering ingredients such as sodium chloride, sodium borate, sodium acetate, sodium citrate,
- the ophthalmic solution or suspension may be administered as often as necessary to maintain an acceptable IOP level in the eye. It is contemplated that administration to the mammalian eye will be from once up to three times daily.
- novel formulations of this invention may take the form of solutions, gels, ointments, suspensions or solid inserts, formulated so that a unit dosage comprises a therapeutically effective amount of the active component or some multiple thereof in the case of a combination therapy.
- the compounds of the instant invention are also useful for mediating the bone modeling and remodeling processes of the osteoblasts and osteoclasts. See PCT US99/23757 filed October 12,
- the major prostaglandin receptor in bone is EP ⁇ which is believed to provide its effect by signaling via cyclic AMP. See Dceda T, Miyaura C, Ichikawa A, Narumiya S, Yoshiki S and Suda T 1995, In situ localization of three subtypes (EP j , EP3 and EP4) of prostaglandin E receptors in embryonic and newborn mice., J Bone Miner Res 10 (sup
- Another object of the present invention is to provide methods for stimulating bone formation, i.e. osteogenesis, in a mammal comprising administering to a mammal in need thereof a therapeutically effective amount of an EP4 receptor subtype agonist of formula I.
- Still another object of the present invention to provide methods for stimulating bone formation in a mammal in need thereof comprising administering to said mammal a therapeutically effective amount of an EP4 receptor subtype agonist of formula I and a bisphosphonate active.
- administering to said mammal a therapeutically effective amount of an EP4 receptor subtype agonist of formula I and a bisphosphonate active.
- Use of the compounds of formula I for the manufacture of a medicament for stimulating bone formation is also included in this invention.
- Yet another object of the present invention to provide pharmaceutical compositions comprising a therapeutically effective amount of an EP4 receptor subtype agonist of formula I and a bisphosphonate active.
- Use of the compounds of formula I for the manufacture of a medicament for treating or reducing the risk of contracting a disease state or condition related to abnormal bone resorption is also included in this invention.
- the disease states or conditions related to abnormal bone resorption include, but are not limited to, osteoporosis, glucocorticoid induced osteoporosis, Paget's disease, abnormally increased bone turnover, periodontal disease, tooth loss, bone fractures, rheumatoid arthritis, periprosthetic osteolysis, osteogenesis imperfecta, metastatic bone disease, hypercalcemia of malignancy, and multiple myeloma.
- both concurrent and sequential administration of the EP4 receptor subtype agonist of formula I and the bisphosphonate active are deemed within the scope of the present invention.
- the formulations are prepared containing 5 or 10 mg of a bisphosphonate active, on a bisphosphonic acid active basis.
- the agonist and the bisphosphonate can be administered in either order.
- the agonist and bisphosphonate are typically administered within the same 24 hour period.
- the agonist and bisphosphonate are typically administered within about 4 hours of each other.
- a non-limiting class of bisphosphonate actives useful in the instant invention are selected from the group consisting of alendronate, cimadronate, clodronate, tiludronate, etidronate, ibandronate, neridronate, olpandronate, risedronate, piridronate, pamidronate, zolendronate, pharmaceutically acceptable salts thereof, and mixtures thereof.
- a non-limiting subclass of the above-mentioned class in the instant case is selected from the group consisting of alendronate, pharmaceutically acceptable salts thereof, and mixtures thereof.
- a non-limiting example of the subclass is alendronate monosodium trihydrate.
- the agonist is typically administered for a sufficient period of time until the desired therapeutic effect is achieved.
- the term "until the desired therapeutic effect is achieved”, as used herein, means that the therapeutic agent or agents are continuously administered, according to the dosing schedule chosen, up to the time that the clinical or medical effect sought for the disease or condition being mediated is observed by the clinician or researcher.
- the compounds are continuously administered until the desired change in bone mass or structure is observed, hi such instances, achieving an increase in bone mass or a replacement of abnormal bone structure with normal bone structure are the desired objectives.
- the compounds are continuously administered for as long as necessary to prevent the undesired condition.
- Nonlimiting examples of administration periods can range from about 2 weeks to the remaining lifespan of the mammal.
- administration periods can range from about 2 weeks to the remaining lifespan of the human, preferably from about 2 weeks to about 20 years, more preferably from about 1 month to about 20 years, more preferably from about 6 months to about 10 years, and most preferably from about 1 year to about 10 years.
- the instant compounds are also useful in combination with known agents useful for treating or preventing bone loss, bone fractures, osteoporosis, glucocorticoid induced osteoporosis, Paget' s disease, abnormally increased bone turnover, periodontal disease, tooth loss, osteoarthritis, rheumatoid arthritis, periprosthetic osteolysis, osteogenesis imperfecta, metastatic bone disease, hypercalcemia of malignancy, and multiple myeloma.
- Combinations of the presently disclosed compounds with other agents useful in treating or preventing osteoporosis or other bone disorders are within the scope of the invention.
- a person of ordinary skill in the art would be able to discern which combinations of agents would be useful based on the particular characteristics of the drugs and the disease involved.
- Such agents include the following: an organic bisphosphonate; a cathepsin K inhibitor; an estrogen or an estrogen receptor modulator; an androgen receptor modulator; an inhibitor of osteoclast proton ATPase; an inhibitor of HMG-CoA reductase; an integrin receptor antagonist; an osteoblast anabolic agent, such as PTH; calcitonin; Vitamin D or a synthetic Vitamin D analogue; and the pharmaceutically acceptable salts and mixtures thereof.
- a preferred combination is a compound of the present invention and an organic bisphosphonate.
- Another preferred combination is a compound of the present invention and an estrogen receptor modulator.
- Another preferred combination is a compound of the present invention and an estrogen.
- Another preferred combination is a compound of the present invention and an androgen receptor modulator.
- Another preferred combination is a compound of the present invention and an osteoblast anabolic agent.
- the formula I agonists generally have an EC50 value from about 0.001 nM to about 100 microM, although agonists with activities outside this range can be useful depending upon the dosage and route of administration.
- the agonists have an EC5 Q value of from about 0.0001 microM to about 10 microM.
- the agonists have an EC50 value of from about 0.0001 microM to about 1 microM.
- EC ⁇ Q is a common measure of agonist activity well known to those of ordinary skill in the art and is defined as the concentration or dose of an agonist that is needed to produce half, i.e. 50%, of the maximal effect.
- the compounds of this invention can be made, with some modification, in accordance with US Patent No. 6,043,275, EP0855389, WO 03/047417 (USSN 60/337228), WO 03/047513 (USSN 60/338,117), USSN 60/406,530 (Merck Docket No. MC060), WO 2004/085430 and WO 01/46140, all of which are incorporated herein by reference in their entirety.
- the following non-limiting schemes and examples given by way of illustration is demonstrative of the present invention.
- Step 1 isopropyl 5- ⁇ 3-[(4R)-4-( ⁇ [/er/-butyl(dimethyl)silyl]oxy ⁇ methyl)-2-oxo-l,3-oxazinan-3- yl]propyl ⁇ thiophene-2-carboxylate
- Step 3 isopropyl 5 - ⁇ 3 - [(4i?)-4-formy 1-2-oxo- 1 ,3 -oxazinan-3 -y 1] propyl ⁇ thi ophene-2-carboxy late
- Step 4 isopropyl 5-(3- ⁇ (4R)-4-[(l£)-4-(3-bromophenyl)-4,4-difluoro-3-oxobut-l-en-l-yl]-2-oxo-l,3- oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylate (11)
- the cloudy solution was diluted with IN HCl/water and extracted with ethyl acetate (EA) (2x). The EA layers were washed with water and dried over MgSO 4 . The crude was purified by flash (50-80% EA/hexane) to give desired product 11 which was contaminated with the phosphonate reagent by NMR.
- EA ethyl acetate
- Step 5 Preparation of catalyst 14
- the catalyst was prepared by mixing lmol equiv of [RuCl 2 (p-cymene) 2 ], 2mol equiv
- the catalyst could also be generated in situ by mixing 0.02 mol equiv of [RuCl 2 (f>-cymene) 2 ] and 0.04 mol equiv of the (i?,/?)-N-Tosyl-l,2-diphenylethylene-l,2-diamine in DCM (dichloromethane) in the presence of 0.04 mol equiv of IM solution KOtBu in THF. After aging for 10 min at RT(room temperature), Et 3 N was added followed by HCO 2 H and a solution of the enone in DCM.
- Example 1 isopropyl 5-(3- ⁇ (4R)-4-[(l£,3R)-4-(3-bromophenyl)-4,4-difluoro-3-hydroxybut-l-en-l-yl]-2- OXO- 1 ,3-oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylate
- Example 1 To a solution of Example 1 (1 10 mg, 0.2 mmol) in EtOAc (10 mL) and acetone (1OmL) was added PtO 2 (5 mg). The resulting black reaction mixture was subjected to H 2 (1 atm (atmosphere)) for 18h. The solution was filtered over a pad of celite and the organic solvent was removed in vacuo. The crude product was purified by flash column chromatography to afford the ester which was hydrolyzed in the usual manner to the title compound. MS(+ESI) m/z 532.2, 534.2.
- Step 1 To a solution of 3-bromo-iodobenzene (14.1g, 50 mmol) and ethyl bromo- ⁇ , ⁇ - difluoroacetate (10. Ig, 50 mmol) in DMSO (40 mL) was added copper bronze (7g, 110 mmol) and the suspension was heated to 55 0 C for 2.5 days and cooled to rt. The mixture was quenched with KH 2 PO 4 and filtered. The solid was washed with EA/water and the filtrate was separated. The aqueous layer was extracted with ether (2x) and the organic phases were combined, washed with water and brine.
- Step 1 5-[(l£)-3-te ⁇ butoxy-3-oxoprop-l-en-l-yl]thiophene-2-carboxylic acid (16)
- ester 17 (45g, 152 mmol) in 50OmL of dichloromethane was added 45 mL of TFA (trifluoroacetic acid) slowly and the solution was stirred at rt. for 12 hours. To the solution was added 30OmL of PhMe and followed by concentration in vacuo. The resultant solid was collected and washed with hexanes to yield 18.
- TFA trifluoroacetic acid
- Step 4 3-[5-(isopropoxycarbonyl)-2-thienyl]propanoic acid (19) To a solution of acid 18 (45g, 152 mmol) in 20OmL of isopropanol was added 5.32 g of
- Step 5 isopropyl 5-(3-hydroxypropyl)thiophene-2-carboxylate (20)
- Example 5 isopropyl 5-(3- ⁇ (4i?)-4-[(l£ ' ,3R)-4-(3,5-dichlorophenyl)-4,4-difluoro-3-hydroxybut-l-en-l- yl]-2-oxo- 1 ,3 -oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylate
- Example 6 5-(3- ⁇ (4/?)-4-[(l J E,3i2)-4-(3,5-dichlorophenyl)-4 5 4-difluoro-3-hydroxybut-l-en-l-yl]-2-oxo- 1 ,3-oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylic acid
- Example 7 isopropyl 5-(3- ⁇ (4S)-4-[(3R)-4-(3,5-dichlorophenyl)-4,4-difluoro-3-hydroxybutyl]-2-oxo-l,3- oxazinan-3 -yl ⁇ propyl)thiophene-2-carboxylate
- Example 9 isopropyl 5-(3- ⁇ (4R)-4-[(l£,3R)-4-(3,5-dimethylphenyl)-4,4-difluoro-3-hydroxybut-l-en-l- y 1] -2-oxo- 1 ,3 -oxazinan-3 -y 1 ⁇ propy l)thiophene-2-carboxylate
- Example 10 5-(3- ⁇ (4R)-4-[(l J E,3R)-4-(3,5-dimethylphenyl)-4,4-difluoro-3-hydroxybut-l-en-l-yl]-2-oxo- 1 ,3-oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylic acid
- Example 1 5-(3- ⁇ (4S)-4-[(3R)-4-(3,5-dimethylphenyl)-4,4-difluoro-3-hydroxybutyl]-2-oxo-l,3- oxazinan-3 -yl ⁇ propyl)thiophene-2-carboxylic acid
- Example 12 isopropyl 5-[3-((4R)-4- ⁇ (l£,3R)-4,4-difluoro-3-hydroxy-4-[3-(trifluoromethyl)phenyl]but-l- en-l-yl ⁇ -2-oxo-l,3-oxazinan-3-yl)propyl]thiophene-2-carboxylate
- Example 13 5-[3-((4R)-4- ⁇ ( l£,3R)-4,4-difluoro-3-hydroxy-4-[3-(trifluoromethyl)phenyl]but- 1 -en- 1 -yl ⁇ - 2-oxo- 1 ,3-oxazinan-3-yl)propyl]thiophene-2-carboxylic acid
- Example 14 isopropyl 5-[3-((4S)-4- ⁇ (3R)-4,4-difluoro-3-hydroxy-4-[3-(trifluoromethyl)phenyl]butyl ⁇ -2- oxo-1, 3-oxazinan-3-yl)propyl]thiophene-2-carboxylate
- Example 15 5-[3-((4S)-4- ⁇ (3R)-4,4-difluoro-3-hydroxy-4-[3-(trifluoromethyl)phenyl]butyl ⁇ -2-oxo-l,3- oxazinan-3-yl)propyl]thiophene-2-carboxylic acid
- Step 2 ethyl difluoro [3 -( 1 -hydroxy- 1 -methyl ethyl)pheny 1] acetate
- Step 3 ethyl ⁇ , ⁇ -difluoro(3-isopropylphenyl)acetate
- Step 4 dimethyl [3,3-difluoro-3-(3-isopropylphenyl)-2-oxopropyl]phosphonate To a solution of dimethyl methylphosphonate (3.1g, 25 mmol) in THF ( 100 mL) at -78
- Example 16 5-(3- ⁇ (4R)-4-[(l£,3R)-4,4-difluoro-3-hydroxy-4-(3-isopropylphenyl)but-l-en-l-yl]-2-oxo- l,3-oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylic acid
- Example 18 Example 19 Step 1 : Isopropyl 4-bromo-5- ⁇ 3-[(4i?)-4-(bromomethyl)-2-oxo-l,3-oxazinan-3-yl]propyl ⁇ thiophene-2- carboxylate (21)
- Step 2 Isopropyl 5-(3- ⁇ (4R)-4-[(acetyloxy)methyl]-2-oxo-l,3-oxazinan-3-yl ⁇ propyl)-4-bromothiophene- 2-carboxylate (22)
- Step 3 Isopropyl 4-bromo-5- ⁇ 3-[(4R)-4-(hydroxymethyl)-2-oxo-l,3-oxazinan-3-yl]propyl ⁇ thiophene-2- carboxylate (23)
- Example 18 methyl 4-bromo-5-(3- ⁇ (4R)-4-[(l£,3i?)-4-(3-bromophenyl)-4,4-difluoro-3-hydroxybut-l-en- 1 -yl]-2-oxo- 1 ,3 -oxazinan-3 -yl ⁇ propyl)thiophene-2-carboxylate
- Example 19 4-bromo-5-(3- ⁇ (4R)-4-[( l£,3R)-4-(3-bromophenyl)-4,4-difluoro-3-hydroxybut- 1 -en- 1 -yl]-2- OXO- 1 ,3-oxazinan-3-yl ⁇ propyl)thiophene-2-carboxylic acid
- Example 20 5-(3- ⁇ (4R)-4-[(l J E,3R)-4-(3-bromophenyl)-4,4-difluoro-3-hydroxybut-l-en-l-yl]-2-oxo-l,3- oxazinan-3-yl ⁇ propyl)-3-fluorothiophene-2-carboxylic acid
- Drug concentrations are expressed in terms of the active ingredient (base).
- the compounds of this invention are dissolved in a suitable ophthalmic solution (e.g., 0.5% polysorbate-80, 0.1% EDTA, 0.02% benzalkonium chloride, 4.5% mannitol in 5 niM citrate buffer at pH 5-7) at 0.00063, 0.00013 % for rabbit studies and 0.0063, 0.0019%, 0.00063 and 0.000063% for monkey studies.
- Drug or vehicle aliquots (25 ul) are administered topically unilaterally or bilaterally.
- the contralateral eyes receive an equal volume of vehicle (0.5% polysorbate-80, 0.1% EDTA, 0.02% benzalkonium chloride, 4.5% mannitol in 5 mM citrate buffer at pH 5-7).
- Proparacaine 0.5%) is applied to the cornea prior to tonometry to minimize discomfort.
- Intraocular pressure IOP is recorded using a pneumatic tonometer (Alcon Applanation Pneumatonograph) or equivalent.
- results are expressed as the changes in IOP from the basal level measured just prior to administration of drug or vehicle and represent the mean, plus or minus standard deviation.
- Statistical comparisons are made using the Student's t-test for non-paired data between responses of drug-treated and vehicle-treated animals and for paired data between ipsilateral and contralateral eyes at comparable time intervals.
- the significance of the date is also determined as the difference from the "t-0" value using Dunnett's "t” test. Asterisks represent a significance level of p ⁇ 0.05.
- Unilateral ocular hypertension of the right eye is induced in female cynomolgus monkeys weighing between 2 and 3 kg by photocoagulation of the trabecular meshwork with an argon laser system (Coherent NOVUS 2000, Palo Alto, USA) using the method of Lee at al. (1985).
- IOP intraocular pressure
- IOP measurements the monkeys are kept in a sitting position in restraint chairs for the duration of the experiment. Animals are lightly anesthetized by the intramuscular injection of ketamine hydrochloride (3-5 mg/kg) approximately five minutes before each IOP measurement and one drop of 0.5% proparacaine was instilled prior to recording IOP. IOP is measured using a pneumatic tonometer (Alcon Applanation Tonometer) or a Digilab pneumatonometer (Bio-Rad Ophthalmic Division, Cambridge, MA, USA). IOP is measured before treatment and generally at 30, 60, 124, 180, 300, and 360 minutes after treatment. Baseline values are also obtained at these time points generally two or three days prior to treatment.
- Treatment consists of instilling one drop of 25 ul of the compounds of this invention (0.000063 to 0.0063 %) or vehicle. At least one-week washout period is employed before testing on the same animal.
- the normotensive (contralateral to the hypertensive) eye is treated in an exactly similar manner to the hypertensive eye.
- IOP measurements for both eyes are compared to the corresponding baseline values at the same time point. Results are expressed as mean plus-or-minus standard deviation in mm Hg.
- the activity range of the compounds of this invention for ocular use is between 0.01 and 100,000 nM.
- Example 1 Compounds from the current invention (i.e., Example 1) showed improved ocular tolerability in animal species such as rabbits and cynomolgus monkeys compared to compounds disclosed in WO 2004/085430 (i.e., Example 2).
- Example 2 Compounds from the current invention
- Example 3 showed improved ocular tolerability in animal species such as rabbits and cynomolgus monkeys compared to compounds disclosed in WO 2004/085430 (i.e., Example 2).
- Example 2 Compounds from the current invention
- Example 2 of WO 2004/085430 demonstrated treatment related findings of very slight bilateral hyperemia, very slight conjunctival chemosis and slight ocular discharge at the same dose. Similarly a 5-fold improvement in eye closure was observed with the present compound in New Zealand White rabbits after ocular dosing. The present compound also demonstrated a 3-5-fold improvement in ocular adverse effects (conjuctival hyperemia, partial eye closure, etc.) in Cynomolgus Monkeys.
- Prostanoid receptor (PG) cDNAs corresponding to full length coding sequences were subcloned into the appropriate sites of the mammalian expression vector pCEP4 (Invitrogen) pCEP4PG plasmid DNA was prepared using the Qiagen plasmid preparation kit (QIAGEN) and transfected into HEK 293(EBNA) cells using LipofectAMINE@ (GIBCO-BRL) according to the manufacturers' instructions.
- HEK 293(EBNA) cells expressing the cDNA together with the hygromycin resistance gene were selected in Dulbecco's Modified Eagle Medium (DMEM) supplemented with 10 % heat inactivated fetal bovine serum, 1 mM sodium pyruvate, 100 U/ml Penicillin-G, 100 ⁇ g/ml Streptomycin sulphate, 250 ⁇ g/ml active GENETICINTM (G418) (all from Life Technologies, Inc/BRL) and 200 ⁇ g/ml hygromycin (Calbiochem). Individual colonies were isolated after 2-3 weeks of growth under selection using the cloning ring method and subsequently expanded into clonal cell lines. Expression of the receptor cDNA was assessed by receptor binding assays.
- DMEM Dulbecco's Modified Eagle Medium
- HEK 293(EBNA) cells were grown in supplemented DMEM complete medium at 37°C in a humidified atmosphere of 6 % CO 2 in air, then harvested and membranes prepared by differential centrifugation (1000 x g for 10 min, then 160,000 x g for 30 min, all at 4°C) following lysis of the cells by nitrogen cavitation at 800 psi for 30 min on ice in the presence of protease inhibitors (2 mM phenylmethylsulfonylfluoride, 10 ⁇ M E-64, 100 ⁇ M leupeptin and 0.05 mg/ml pepstatin).
- protease inhibitors 2 mM phenylmethylsulfonylfluoride, 10 ⁇ M E-64, 100 ⁇ M leupeptin and 0.05 mg/ml pepstatin.
- the 160,000 x g pellets were resuspended in 10 mM HEPES/KOH (pH 7.4) containing 1 mM EDTA at approximately 5-10 mg/ml protein by Dounce homogenisation (Dounce A; 10 strokes), frozen in liquid nitrogen and stored at -80 0 C.
- Prostanoid receptor binding assays were performed in a final incubation volume of 0.2 ml in 10 mM MES/KOH (pH 6.0) (EP subtypes, FP and TP) or 10 mM HEPES/KOH (pH 7.4) (DP and EP), containing 1 mM EDTA, 10 mM MgCl 2 (EP subtypes) or 10 mM MnCl 2 (DP, FP, IP and TP) and radioligand [0.5-1.0 nM [ 3 H]PGE 2 (181 Ci/mmol) for EP subtypes, 0.7 nM [ 3 H]PGD 2 (1 15 Ci/mmol) for DP, 0.95 nM [ 3 H]PGF 2n (170 Ci/mmol) for FP, 5 nM [ 3 H]iloprost (16 Ci/mmol) for IP and 1.8 nM [ 3 H]SQ 29548 (46 Ci/mmol) for TP].
- EP 3 assays also contained 100 ⁇ M GTPDS.
- the reaction was initiated by addition of membrane protein (approximately 30 ⁇ g for EPi, 20 ⁇ g for EP 2 , 2 ⁇ g for EP 3 , 10 ⁇ g for EP 4 , 60 ⁇ g for FP, 30 ⁇ g for DP, 10 ⁇ g for IP and 10 ⁇ g for TP) from the 160,000 x g fraction.
- Ligands were added in dimethylsulfoxide (Me 2 SO) which was kept constant at 1 % (v/v) in all incubations. Non-specific binding was determined in the presence of 1 ⁇ M of the corresponding nonradioactive prostanoid. Incubations were conducted for 60 min (EP subtypes, FP and IP) or 30 min (DP and TP) at 3O 0 C (EP subtypes, DP, FP and TP) or room temperature (IP) and terminated by rapid
- the activity range of the compounds of this invention for bone use is between 0.01 and 100,000 nM.
- RP-I periosteal cells are spontaneously immortalized from primary cultures of periosteal cells from tibae of 4-week old Sprague-Dawley rats and are cultured in DMEM (BRL, Gaithersburg, MD) with 10 % fetal bovine serum (JRH Biosciences, Lenexa, KS). These cells do not express 50 osteoblastic phenotypic markers in early culture, but upon confluence, express type I collagen, alkaline phosphatase and osteocalcin and produce mineralized extracellular matrix.
- RCT-I and RCT-3 are clonal cell lines immortalized by SV-40 large T antigen from cells released from fetal rat calvair by a cmbination collagenase/hyaluronidase digestion.
- RCT-I cells derived from cells released during the first 10 minutes of digestion (fraction I), are cultured in RPMI 1640 medium (BRL) with 10% fetal bovine serum and 0.4 mg/ml G418 (BRL). These cells differentiate and express osteoblastic features upon retinoic acid treatment.
- RCT-3 cells immortalized from osteoblast- enriched fraction EU cells, are cultured in F- 12 medium (BRL) with 5% Fetal bovine serum and 0.4 mg/ml G418.
- TRAB-11 cells are also immortalized by SV40 large T antigen from adult rat tibia and are
- P815 mouse mastocytoma cells, cultured in Eagles MEM with 10% FBS, and NRK
- RNA is extracted from the tibial metaphysis or diaphysis and calvaria using a guanidinium isothiocyanate-phenol-chloroform method after pulverizing frozen bone samples by a tissue homogenizer. See P. Chomczynski et al., Single-step method of RNA isolation by acid guanidium thiocyanate-phenol-chloroform extraction., Analyt Biochem, 162, 156-159 (1987), which is incorporated by reference herein in its entirety. RNA samples (20 mg) are separated on 0.9% agarose/formaldehyde
- Membranes are prehybridized in Hybrisol I (Oncor, Gaithersburg, MD) and 0.5 mg/ml sonicated salmon sperm DNA (Boehringer) at 42 0 C for 3 hours and are hybridized at 42 0 C with rat EP2 and mouse EP4 cDNA probes labeled with p2p]-dCTP (Amersham, Buckinghamshire, UK) by random priming using the rediprime kit (Amersham).
- membranes are washed 4 times in 2xSSC + 0.1% SDS at room 50 temperature for a total of 1 hour and once with 0.2xSSC + 0.1% SDS at 55 0 C for 1 hour and then exposed to Kodak XAR 2 film at -70 0 C using intensifying screens. After developing the films, bound probes are removed twice with 0.1% SDS at 8O 0 C and membranes are hybridized with a human GAPDH (Glyceraldehyde 3 -Phosphate Dehydrogenase) cDNA probe (purchased from Clontech, Palo Alto, CA) for loading control. 4. In-Situ Hybridization:
- Frozen tibiae are sectioned coronally at 7 mm thickness and sections are mounted on charged slides (Probe On Plus, Fisher Scientific, Springfield, NJ) and are kept at -70 C until 5 hybridization.
- cRNA probes are labeled with 35 ⁇ -UTPgS (ICN, Costa Mesa, CA) using a Riboprobe ⁇ kit (Promega Madison, WT). Hybridization is performed overnight at 50 C. See M. Weinreb et al, Different pattern of alkaline phosphatase, osteopontin and osteocalcin expression in developing rat bone visualized by in-situ hybridization, J. Bone Miner Res., 5, 831-842 (1990) and D.
- EP4 and EP2 mRNA are examined in various bone derived cells including osteoblast-enriched primary rat calvaria cells, immortalized osteoblastic cell lines from fetal rat
- osteoblastic osteosarcoma ZO calvaria or from adult rat tibia and an osteoblastic osteosarcoma cell line. Most of the osteoblastic cells and cell lines show significant amounts of 3.8 kb EP4 mRNA, except for the rat osteosarcoma cell line
- ROS 17/2.8 Consistent with this finding, in ROS 17/2.8 cells PGE 2 has no effect on intracellular cAMP, which is markedly induced in RCT-3 and TRAB-11 cells. Treatment of RCT-I cells with retinoic acid, which promotes their differentiation, reduces the levels of EP4 mRNA. NRK fibroblasts do
- EP4 mRNA 25 not express EP4 mRNA, while P815 mastocytoma cells, used as positive controls, express large amounts of EP4 mRNA. In contrast to EP4 mRNA, none of the osteoblastic cells and cell lines express detectable amounts OfEP 2 mRA in total RNA samples. Expression of EP4 mRNA in osteoblastic cells, EP4 is also expressed in total RNA isolated from tibiae and calvariae of 5-week-old rats. In contrast, no EP 2 mRNA is found in RNA from tibial shafts.
- PGE 2 Induces The Expression OfEPz 1 mRNA in RP-I Periosteal Cells And In Adult Rat Tibiae
- PGE 2 enhances its own production via upregulation of cyclooxygenase 2 expression in osteoblasts and in bone tissue thus autoamplifying its own effects. PGE 2 also increases the levels of EP4 mRNA.
- RP- 1 cells are immortalized from a primary culture of adult rat tibia periosteum is examined. These cells express osteoblast phenotypic markers upon confluence and form mineralized bone matrix when implanted in nude mice. Similar to the other osteoblastic cells examined, RP-I periosteal cells
- EP2 mRNA is not expressed in RP-I cells before or after treatment with PGE2.
- PGE2 regulates EP4 mRNA levels in vivo in bone tissue
- five-week-old male rats are injected with PGE2 (3 - 6 mg/Kg).
- Systemic administration of PGE2 rapidly increased EP4 mRNA levels in the tibial diaphysis peaking at 2 h after injection.
- a similar effect of PGE2 on EP4 0 mRNA is observed in the tibial metaphysis and in calvaria.
- PGE2 induces EP4 mRNA levels in vitro in osteogenic periosteal cells and in vivo in bone tissue in a cell type-specific and tissue-specific manner.
- PGE2 does not induce EP2 mRNA in RP-I cells nor in bone tissue.
- EP4 is expressed in osteoblastic cells in vitro and in bone marrow cells in vivo, and is upregulated by its ligand, PGE2.
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US11/989,643 US20090105234A1 (en) | 2005-08-03 | 2006-07-28 | EP4 Receptor Agonist, Compositions and Methods Thereof |
AU2006275270A AU2006275270A1 (en) | 2005-08-03 | 2006-07-28 | EP4 receptor agonist, compositions and methods thereof |
JP2008524323A JP2009502977A (en) | 2005-08-03 | 2006-07-28 | EP4 receptor agonist, compositions and methods thereof |
EP06761196A EP1912977A4 (en) | 2005-08-03 | 2006-07-28 | Ep4 receptor agonist, compositions and methods thereof |
CA002616604A CA2616604A1 (en) | 2005-08-03 | 2006-07-28 | Ep4 receptor agonist, compositions and methods thereof |
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Cited By (12)
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WO2008136519A1 (en) | 2007-05-08 | 2008-11-13 | National University Corporation, Hamamatsu University School Of Medicine | Cytotoxic t cell activator comprising ep4 agonist |
WO2008149965A1 (en) | 2007-06-07 | 2008-12-11 | Astellas Pharma Inc. | Pyridone compound |
WO2009152920A1 (en) | 2008-06-18 | 2009-12-23 | Merck Patent Gmbh | 3-(3-pyrimidin-2-yl-benzyl)-[1,2,4]triazolo[4,3-b]pyridazine derivatives as met kinase inhibitors |
WO2009154190A1 (en) | 2008-06-17 | 2009-12-23 | アステラス製薬株式会社 | Pyridone compound |
DE102008062825A1 (en) | 2008-12-23 | 2010-06-24 | Merck Patent Gmbh | 3- (3-pyrimidin-2-yl-benzyl) - [1,2,4] triazolo [4,3-b] pyridazine derivatives |
DE102008063667A1 (en) | 2008-12-18 | 2010-07-01 | Merck Patent Gmbh | 3- (3-pyrimidin-2-yl-benzyl) - ° [1,2,4] triazolo [4,3-b] pyrimidine derivatives |
WO2011047048A1 (en) | 2009-10-14 | 2011-04-21 | Gemmus Pharma, Inc. | Combination therapy treatment for viral infections |
WO2015021358A2 (en) | 2013-08-09 | 2015-02-12 | Dominique Charmot | Compounds and methods for inhibiting phosphate transport |
US9540357B1 (en) | 2014-07-31 | 2017-01-10 | Allergan, Inc. | 15-aryl prostaglandins as EP4 agonists, and methods of use thereof |
WO2020237096A1 (en) | 2019-05-21 | 2020-11-26 | Ardelyx, Inc. | Combination for lowering serum phosphate in a patient |
EP3733665A4 (en) * | 2017-12-25 | 2021-06-02 | Asahi Kasei Pharma Corporation | Nitrogen-containing six-membered ring compound |
RU2772958C2 (en) * | 2017-12-25 | 2022-05-27 | Асахи Касеи Фарма Корпорейшн | Nitrogen-containing 6-element cyclic compounds |
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JP5578705B2 (en) * | 2010-03-29 | 2014-08-27 | 公益財団法人相模中央化学研究所 | (Aryl) difluoroacetic acid ester derivative and method for producing the same |
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WO2004019938A1 (en) * | 2002-08-28 | 2004-03-11 | Merck Frosst Canada & Co. | Oxazolidin-2-one and thiazolidin-2-one derivatives for use as ep4 receptor agonists in the treatment of glaucoma |
WO2004085430A1 (en) * | 2003-03-26 | 2004-10-07 | Merck Frosst Canada Ltd. | Prostaglandin analogs as ep4 receptor agonists |
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BRPI0406717A (en) * | 2003-01-10 | 2005-12-20 | Hoffmann La Roche | Compound, pharmaceutical composition comprising the same, method of treating a disease in a mammal, use of the compound and process for its production |
-
2006
- 2006-07-28 US US11/989,643 patent/US20090105234A1/en not_active Abandoned
- 2006-07-28 WO PCT/CA2006/001243 patent/WO2007014454A1/en active Application Filing
- 2006-07-28 CA CA002616604A patent/CA2616604A1/en not_active Abandoned
- 2006-07-28 JP JP2008524323A patent/JP2009502977A/en not_active Withdrawn
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WO2004019938A1 (en) * | 2002-08-28 | 2004-03-11 | Merck Frosst Canada & Co. | Oxazolidin-2-one and thiazolidin-2-one derivatives for use as ep4 receptor agonists in the treatment of glaucoma |
WO2004085430A1 (en) * | 2003-03-26 | 2004-10-07 | Merck Frosst Canada Ltd. | Prostaglandin analogs as ep4 receptor agonists |
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WO2008136519A1 (en) | 2007-05-08 | 2008-11-13 | National University Corporation, Hamamatsu University School Of Medicine | Cytotoxic t cell activator comprising ep4 agonist |
WO2008149965A1 (en) | 2007-06-07 | 2008-12-11 | Astellas Pharma Inc. | Pyridone compound |
WO2009154190A1 (en) | 2008-06-17 | 2009-12-23 | アステラス製薬株式会社 | Pyridone compound |
WO2009152920A1 (en) | 2008-06-18 | 2009-12-23 | Merck Patent Gmbh | 3-(3-pyrimidin-2-yl-benzyl)-[1,2,4]triazolo[4,3-b]pyridazine derivatives as met kinase inhibitors |
DE102008028905A1 (en) | 2008-06-18 | 2009-12-24 | Merck Patent Gmbh | 3- (3-pyrimidin-2-yl-benzyl) - [1,2,4] triazolo [4,3-b] pyridazine derivatives |
DE102008063667A1 (en) | 2008-12-18 | 2010-07-01 | Merck Patent Gmbh | 3- (3-pyrimidin-2-yl-benzyl) - ° [1,2,4] triazolo [4,3-b] pyrimidine derivatives |
DE102008062825A1 (en) | 2008-12-23 | 2010-06-24 | Merck Patent Gmbh | 3- (3-pyrimidin-2-yl-benzyl) - [1,2,4] triazolo [4,3-b] pyridazine derivatives |
WO2010072301A1 (en) | 2008-12-23 | 2010-07-01 | Merck Patent Gmbh | 3-(3-pyrimidine-2-yl-benzyl)-[1,2,4] triazolo [4,3-b] pyridazine derivatives |
WO2011047048A1 (en) | 2009-10-14 | 2011-04-21 | Gemmus Pharma, Inc. | Combination therapy treatment for viral infections |
WO2015021358A2 (en) | 2013-08-09 | 2015-02-12 | Dominique Charmot | Compounds and methods for inhibiting phosphate transport |
EP3492106A1 (en) | 2013-08-09 | 2019-06-05 | Ardelyx, Inc. | Compounds and methods for inhibiting phosphate transport |
EP3884935A1 (en) | 2013-08-09 | 2021-09-29 | Ardelyx, Inc. | Compounds and methods for inhibiting phosphate transport |
US9540357B1 (en) | 2014-07-31 | 2017-01-10 | Allergan, Inc. | 15-aryl prostaglandins as EP4 agonists, and methods of use thereof |
EP3733665A4 (en) * | 2017-12-25 | 2021-06-02 | Asahi Kasei Pharma Corporation | Nitrogen-containing six-membered ring compound |
RU2772958C2 (en) * | 2017-12-25 | 2022-05-27 | Асахи Касеи Фарма Корпорейшн | Nitrogen-containing 6-element cyclic compounds |
US11667630B2 (en) | 2017-12-25 | 2023-06-06 | Asahi Kasei Pharma Corporation | Nitrogen-containing 6-membered cyclic compound |
WO2020237096A1 (en) | 2019-05-21 | 2020-11-26 | Ardelyx, Inc. | Combination for lowering serum phosphate in a patient |
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CA2616604A1 (en) | 2007-02-08 |
EP1912977A4 (en) | 2009-10-21 |
US20090105234A1 (en) | 2009-04-23 |
EP1912977A1 (en) | 2008-04-23 |
AU2006275270A1 (en) | 2007-02-08 |
JP2009502977A (en) | 2009-01-29 |
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