AU2002255346A1 - Method for treatingocular hypertension and glaucoma - Google Patents
Method for treatingocular hypertension and glaucomaInfo
- Publication number
- AU2002255346A1 AU2002255346A1 AU2002255346A AU2002255346A AU2002255346A1 AU 2002255346 A1 AU2002255346 A1 AU 2002255346A1 AU 2002255346 A AU2002255346 A AU 2002255346A AU 2002255346 A AU2002255346 A AU 2002255346A AU 2002255346 A1 AU2002255346 A1 AU 2002255346A1
- Authority
- AU
- Australia
- Prior art keywords
- keto
- prostaglandin compound
- prostaglandin
- compound
- alkyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims description 22
- 208000010412 Glaucoma Diseases 0.000 title claims description 11
- 206010020772 Hypertension Diseases 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims description 58
- 239000003889 eye drop Substances 0.000 claims description 50
- 125000000217 alkyl group Chemical group 0.000 claims description 49
- -1 13, 14-dihydro-15-keto- prostaglandin compound Chemical class 0.000 claims description 43
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 38
- 239000000203 mixture Substances 0.000 claims description 37
- 229940012356 eye drops Drugs 0.000 claims description 31
- 125000003545 alkoxy group Chemical group 0.000 claims description 21
- 125000004043 oxo group Chemical group O=* 0.000 claims description 20
- 125000003118 aryl group Chemical group 0.000 claims description 19
- 125000000623 heterocyclic group Chemical group 0.000 claims description 17
- 229910052736 halogen Inorganic materials 0.000 claims description 16
- 150000002367 halogens Chemical class 0.000 claims description 16
- 239000004480 active ingredient Substances 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 125000004104 aryloxy group Chemical group 0.000 claims description 12
- 206010030043 Ocular hypertension Diseases 0.000 claims description 10
- 125000001931 aliphatic group Chemical group 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229920006395 saturated elastomer Polymers 0.000 claims description 10
- 150000001721 carbon Chemical group 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 8
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 229910052717 sulfur Chemical group 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 6
- 125000004434 sulfur atom Chemical group 0.000 claims description 6
- 125000004423 acyloxy group Chemical group 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims 6
- TVHAZVBUYQMHBC-SNHXEXRGSA-N unoprostone Chemical compound CCCCCCCC(=O)CC[C@H]1[C@H](O)C[C@H](O)[C@@H]1C\C=C/CCCC(O)=O TVHAZVBUYQMHBC-SNHXEXRGSA-N 0.000 claims 6
- 125000004432 carbon atom Chemical group C* 0.000 description 27
- XXUPXHKCPIKWLR-JHUOEJJVSA-N isopropyl unoprostone Chemical compound CCCCCCCC(=O)CC[C@H]1[C@H](O)C[C@H](O)[C@@H]1C\C=C/CCCC(=O)OC(C)C XXUPXHKCPIKWLR-JHUOEJJVSA-N 0.000 description 18
- 229950008081 unoprostone isopropyl Drugs 0.000 description 18
- 125000001424 substituent group Chemical group 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 230000001603 reducing effect Effects 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 13
- 125000005843 halogen group Chemical group 0.000 description 11
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
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- 150000005215 alkyl ethers Chemical class 0.000 description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 6
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- 229940079593 drug Drugs 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 230000004410 intraocular pressure Effects 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
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- 125000001183 hydrocarbyl group Chemical group 0.000 description 3
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- SZNYYWIUQFZLLT-UHFFFAOYSA-N 2-methyl-1-(2-methylpropoxy)propane Chemical compound CC(C)COCC(C)C SZNYYWIUQFZLLT-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
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- 208000036029 Uterine contractions during pregnancy Diseases 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
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- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
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- 150000002373 hemiacetals Chemical class 0.000 description 2
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
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- PRGUDWLMFLCODA-UHFFFAOYSA-N oxybuprocaine hydrochloride Chemical compound [Cl-].CCCCOC1=CC(C(=O)OCC[NH+](CC)CC)=CC=C1N PRGUDWLMFLCODA-UHFFFAOYSA-N 0.000 description 2
- 239000002831 pharmacologic agent Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003180 prostaglandins Chemical class 0.000 description 2
- 125000003107 substituted aryl group Chemical group 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000002691 topical anesthesia Methods 0.000 description 2
- DZUXGQBLFALXCR-UHFFFAOYSA-N (+)-(9alpha,11alpha,13E,15S)-9,11,15-trihydroxyprost-13-en-1-oic acid Natural products CCCCCC(O)C=CC1C(O)CC(O)C1CCCCCCC(O)=O DZUXGQBLFALXCR-UHFFFAOYSA-N 0.000 description 1
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- PNKZBZPLRKCVLI-UHFFFAOYSA-N (2-methylpropan-2-yl)oxybenzene Chemical compound CC(C)(C)OC1=CC=CC=C1 PNKZBZPLRKCVLI-UHFFFAOYSA-N 0.000 description 1
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 description 1
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- 125000004066 1-hydroxyethyl group Chemical group [H]OC([H])([*])C([H])([H])[H] 0.000 description 1
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- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
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- 239000011591 potassium Substances 0.000 description 1
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- YWIVKILSMZOHHF-QJZPQSOGSA-N sodium;(2s,3s,4s,5r,6r)-6-[(2s,3r,4r,5s,6r)-3-acetamido-2-[(2s,3s,4r,5r,6r)-6-[(2r,3r,4r,5s,6r)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2- Chemical compound [Na+].CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 YWIVKILSMZOHHF-QJZPQSOGSA-N 0.000 description 1
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- 125000000335 thiazolyl group Chemical group 0.000 description 1
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- 125000001544 thienyl group Chemical group 0.000 description 1
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- KBPHJBAIARWVSC-XQIHNALSSA-N trans-lutein Natural products CC(=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1=C(C)CC(O)CC1(C)C)C=CC=C(/C)C=CC2C(=CC(O)CC2(C)C)C KBPHJBAIARWVSC-XQIHNALSSA-N 0.000 description 1
- RYYVLZVUVIJVGH-UHFFFAOYSA-N trimethylxanthine Natural products CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 1
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Description
DESCRIPTION
METHOD FOR TREATING OCULAR HYPERTENSION AND GLAUCOMA
Technical Field
The present invention relates to a method for treating ocular hypertension and glaucoma characterized by ocular administration of eye drops comprising a 15-keto- prostagladin compound as an active ingredient in a specified volume or more. RELATED ART
As one method for treating ophthalmic diseases, it is a common practice to formulate pharmacologically active ingredients effective for the treatment of these diseases into eye drops, eye ointments or the like and topically apply such preparations onto a cornea, conjunctiva and the like. The administered drug, after being mixed with lacrimal fluid, mainly permeates the cornea and goes into the eyes. However, it is known that the administered drug is discharged from the conjunctival sac so speedily that a very small volume of it goes into the eyes, resulting in a very small availability of the drug within the living body.
It is generally known that increase in a single administration volume will hardly increase the pharmacological efficacy within the eyes. In the same drug
concentration, the increase in the single administration volume will not increase the concentration of the drug within a precorneal tear film (PTF) . For example, when 0.01% fluorescein solution is administered in different administration volumes (5, 10 and 20 μL) and their respective fluorescein concentrations in a meniscus (eyelid margin) are measured, no significant difference is observed in an apparent initial concentration among each administration volume. Further, since the initial concentration is no more than 36 - 45% of the concentration of the administered fluorescein, it has been revealed that the administered solution, prior to full mixture with the lacrimal fluid, is speedily discharged from the conjunctival sac. Furthermore, when 0.5% pilocarpine eye drops are administered in increased volumes (5, 10, 20 and 50 μL) , iotic effects tend to increase only slightly. There is no significant difference in the effects among each administration volume (Makoto Sugaya et. al., Jpn. J. Ophthalmol. Vol.22: 127-141,1978). Furthermore, it is reported that there was no increase in the therapeutic effect of timolol eye drop with a volume greater than 20 μL (DICP, The Annals of Pharmacotherapy, Vol.24, 1990) .
Prostaglandins (hereinafter, referred to as PG(s)) are members of class of organic carboxylic acids, which are
contained in tissues or organs of human or other mammals, and exhibit a wide range of physiological activity. PGs found in nature (primary PGs) generally have a prostanoic acid skeleton as shown in the formula (A) :
( a chain)
On the other hand, some of synthetic analogues of primary PGs have modified skeletons. The primary PGs are classified to PGAs, PGBs, PGCs, PGDs, PGEs, PGFs, PGGs, PGHs, PGIs and PGJs according to the structure of the five- membered ring moiety, and further classified into the following three types by the number and position of the unsaturated bond at the carbon chain moiety: Subscript 1: 13, 14-unsaturated-15-OH Subscript 2: 5,6- and 13, 14-diunsaturated-15-OH Subscript 3: 5,6-, 13,14-, and 17, 18-triunsaturated-15- OH.
Further, the PGFs are classified, according to the configuration of the hydroxyl group at the 9-position, into a type (the hydroxyl group is of an oc-configuration) and β type (the hydroxyl group is of a β-configuration) .
PGEi, PGE2 and PGE3 are known to have vasodilation,
hypotension, gastric secretion decreasing, intestinal tract movement enhancement, uterine contraction, diuretic, bronchodilation and anti ulcer activities. PGFlα, PGF2α and PGF3α have been known to have hypertension, vasoconstriction, intestinal tract movement enhancement, uterine contraction, lutein body atrophy and bronchoconstriction activities.
In addition, some 15-keto PGs (i.e. those having an oxo group at position 15 in place of the hydroxy group) and 13, 14-dihydro-15-keto-PGs are known as substances naturally produced by enzymatic reactions during in vivo metabolism of primary PGs. 15-keto PG compound have been disclosed in the specification of USP Nos. 5,073,569, 5,166,174, 5,221,763, 5,212,324 and 5,739,161 (These cited references are herein incorporated by reference) . Moreover, it is known that some 15-keto (i.e., having oxo at the 15-position instead of hydroxy) -PGs and 13, 14-dihydro-15-keto-PGs have intraocular pressure reducing effects and are effective for the treatment of ocular hypertension and glaucoma (US Patent Nos. 5,001,153; 5,151,444; 5,166,178 and 5,212,200. These publications are incorporated herein by reference) .
However, it is not yet known how the 15-keto- prostaglandin compound affects the IOP reducing effects when it is administered in different volumes. Disclosure of Invention
The present inventor has conducted intensive studies on biological activities of the 15-keto-prostaglandin compound and have surprisingly found that the increase in the single administration volume will increase the IOP reducing effect and extend the retention time of the IOP reducing effect, which has resulted in the completion of the present invention.
Accordingly, the present invention relates to a method for treating a subject having ocular hypertension and glaucoma characterized by ocular administration of eye drops comprising a 15-keto-prostagladin compound as an active ingredient in a specified volume or more.
The present invention provides a method for treating ocular hypertension and glaucoma, which comprises an administration of eye drops comprising a 15-keto- prostaglandin compound as an active ingredient to a subject in need of such treatment in a single administration volume of at least 20μL/eye.
In another aspect of the invention, the present invention provides an eye drop composition for treating ocular hypertension and glaucoma which comprises a 15-keto- prostaglandin compound as its active ingredient, which is administrated to a subject in need of such treatment in a single administration volume of at least 20μL/eye. In further aspect of the invention, the present
invention provides use of a 15-keto-prostaglandin compound for manufacturing an eye drop composition for treating ocular hypertension and glaucoma, wherein the eye drop composition is administrated to a subject in need of such treatment in a single administration volume of at least 20μL/eye.
BRIEF DESCRIPTION OF THE DRAWINGS Fig 1. represents effect of isopropyl unoprostone eye drops on intraocular pressure ( Λ IOP:mmHg) in albino rabbits (n=8)
Fig 2. represents effect of timolol maleate eye drops on intraocular pressure (ΔlOP:mmHg) in albino rabbits (n=8) DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the "15-keto-prostaglandin compound" (hereinafter, referred to as "15-keto-PG compound") may include any of derivatives or analogs (including substituted derivatives) of a compound having an oxo group at 15-position of the prostanoic acid skeleton instead of the hydroxy group, irrespective of the configuration of the five-membered ring, the number of double bonds, presence or absence of a substituent, or any other modification in the a or ω chain.
The nomenclature of the 15-keto-PG compounds used herein is based on the numbering system of the prostanoic acid represented in the above formula (A) .
The formula (A) shows a basic skeleton of the C-20 carbon atoms, but the 15-keto-PG compounds in the present invention are not limited to those having the same number of carbon atoms. In the formula (A), the numbering of the carbon atoms which constitute the basic skeleton of the PG compounds starts at the carboxylic acid (numbered 1) , and carbon atoms in the , -chain are numbered 2 to 7 towards the five-membered ring, those in the ring are 8 to 12, and those in the ω-chain are 13 to 20. When the number of carbon atoms is decreased in the o;-chain, the number is deleted in the order starting from position 2; and when the number of carbon atoms is increased in the α-chain, compounds are named as substitution compounds having respective substituents at position 2 in place of the carboxy group (C-l) . Similarly, when the number of carbon atoms is decreased in the ω-chain, the number is deleted in the order starting from position 20; and when the number of carbon atoms is increased in the ω-chain, the carbon atoms beyond position 20 are named as substituents. Stereochemistry of the compounds is the same as that of the above formula (A) unless otherwise specified.
In general, each of the terms PGD, PGE and PGF represents a PG compound having hydroxy groups at positions 9 and/or 11, but in the present specification, these terms also include those having substituents other than the
hydroxy group at positions 9 and/or 11. Such compounds are referred to as 9-dehydroxy- 9-substituted-PG compounds or 11-dehydroxy-ll-substituted-PG compounds. A PG compound having hydrogen in place of the hydroxy group is simply named as 9- or 11-dehydroxy compound.
As stated above, the nomenclature of the 15-keto- prostaglandin compounds is based on the prostanoic acid skeleton. However, in case the compound has a similar partial construction as a prostaglandin, the abbreviation of "PG" may be used. Thus, a PG compound of which -chain is extended by two carbon atoms, that is, having 9 carbon atoms in the α-chain is named as 2-decarboxy-2- (2- carboxyethyl) -15-keto- PG compound. Similarly, a PG compound having 11 carbon atoms in the α-chain is named as 2-decarboxy-2- (4-carboxybutyl) - 15-keto-PG compound. Further, a PG compound of which ω-chain is extended by two carbon atoms, that is, having 10 carbon atoms in the ω- chain is named as 15-keto-20-ethyl-PG compound. These compounds, however, may also be named according to the IUPAC nomenclatures.
The 15-keto-PGs used in the present invention may include any PG derivatives or analogs insofar as having an oxo group at position 15 in place of the hydroxy group. Accordingly, for example, a 15-keto-PG type 1 compound having a double bond at 13-14 position, a 15-keto-PG type 2
compound having two double bond at 13-14 and 5-6 position, a 15-keto-PG type 3 compound having three double bond at 5- 6, 13-14 and 17-18 position, 13, 14-dihydro-15-keto-PG compound wherein the double bond at 13-14 position is single bond.
Typical examples of the compounds used in the present invention include 15-keto-PG type 1, 15-keto-PG type 2, 15-keto- PG type 3, 13, 14-dihydro-15-keto-PG type 1, 13,14-dihydro-15-keto-PG type 2, 13, 14-dihydro-15-keto-PG type 3 and the derivatives or analogs thereof.
Examples of the analogs (including substituted derivatives) or derivatives include a 15-keto-PG compound of which carboxy group at the end of α-chain is esterified; a compound of which α-chain is extended; physiologically acceptable salt thereof; a compound having a double bond at
2-3 position or a triple bond at position 5-6, a compound having substituent (s) at position 3, 5, 6, 16, 17, 18, 19 and/or 20; and a compound having lower alkyl or a hydroxy
(lower) alkyl group at position 9 and/or 11 in place of the hydroxy group.
According to the present invention, preferred substituents at position 3, 17, 18 and/or 19 include alkyl having 1-4 carbon atoms, especially methyl and ethyl. Preferred substituents at position 16 include lower alkyl such as methyl and ethyl, hydroxy, halogen atoms such as
chlorine and fluorine, and aryloxy such as trifluoromethylphenoxy. Preferred substituents at position 17 include lower alkyl such as methyl and ethyl, hydroxy, halogen atoms such as chlorine and fluorine, aryloxy such as trifluoromethylphenoxy. Preferred substituents at position 20 include saturated or unsaturated lower alkyl such as Cl-4 alkyl, lower alkoxy such as Cl-4 alkoxy, and lower alkoxy alkyl such as Cl-4 alkoxy-Cl-4 alkyl. Preferred substituents at position 5 include halogen atoms such as chlorine and fluorine. Preferred substituents at position 6 include an oxo group forming a carbonyl group. Stereochemistry of PGs having hydroxy, lower alkyl or hydroxy (lower) alkyl substituent at position 9 and 11 may be α, β or a mixture thereof. Further, the above analogs may be compounds having an alkoxy, cycloalkyl, cycloalkyloxy, phenoxy or phenyl group at the end of the ω-chain where the chain is shorter than the primary PGs .
Especially preferred compounds include a 13,14- dihydro-15-keto-PG compound which has a single bond at position 13-14; a compound of which ω-chain is extended; a compound having a ring structure at the ω-chain end.
A preferred compounds used in the present invention is represented by the formula (I) :
wherein,
L, M and N are hydrogen atom, hydroxy, halogen atom, lower alkyl, hydroxy (lower) alkyl, or oxo, wherein at least one of L and M is a group other than hydrogen, and the five-membered ring may have at least one double bond;
A is -CH2OH, -COCH2OH, -COOH or a functional derivative thereof;
B is -CH2-CH2-, -CH=CH- or -C≡C-;
Rx is a saturated or unsaturated bivalent lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, alkyl, hydroxy, oxo, aryl or heterocyclic group and at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur atom; and Ra is a saturated or unsaturated lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen atom, oxo, hydroxy, lower alkoxy, lower alkanoyloxy, cyclo (lower) alkyl, cyclo (lower) alkyloxy, aryl, aryloxy, heterocyclic group or hetrocyclic-oxy group;
cyclo (lower) alkyl; cyclo (lower) alkyloxy; aryl; aryloxy; heterocyclic group; heterocyclic-oxy group.
A group of particularly preferable compounds among the above described compounds is represented by the formula (II):
wherein L and M are hydrogen atom, hydroxy, halogen atom, lower alkyl, hydroxy (lower) alkyl or oxo, wherein at least one of L and M is a group other than hydrogen, and the five-membered ring may have at least one double bond;
A is -CH2OH, -COCH2OH, -COOH or a functional derivative thereof;
B is -CH2-CH2-, -CH=CH-, -C≡C-;
X-L and X2 are hydrogen, lower alkyl, or halogen; R-L is a saturated or unsaturated bivalent lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, alkyl, hydroxy, oxo, aryl or heterocyclic group and at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur atom;
R2 is a single bond or lower alkylene; and
R3 is lower alkyl, lower alkoxy, cyclo (lower) alkyl, cyclo (lower) alkyloxy, aryl, aryloxy, heterocyclic group or heterocyclic-oxy group.
In the above formula, the term "unsaturated" in the definitions for Rx and Ra is intended to include at least one or more double bonds and/or triple bonds that are isolatedly, separately or serially present between carbon atoms of the main and/or side chains. According to the usual nomenclature, an unsaturated bond between two serial positions is represented by denoting the lower number of the two positions, and an unsaturated bond between two distal positions is represented by denoting both of the positions.
The term "lower to medium aliphatic hydrocarbon" refers to a straight or branched chain hydrocarbon group having 1 to 14 carbon atoms (for a side chain, 1 to 3 carbon atoms are preferable) and preferably 1 to 10, especially 6 to 10 carbon atoms for Rx and 1 to 10, especially 1 to 8 carbon atoms for Ra. The term "halogen atom" covers fluorine, chlorine, bromine and iodine .
The term "lower" throughout the specification is intended to include a group having 1 to 6 carbon atoms unless otherwise specified. The term "lower alkyl" refers to a straight or
branched chain saturated hydrocarbon group containing 1 to 6 carbon atoms and includes, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl and hexyl . The term "lower alkoxy" refers to a group of lower alkyl-O-, wherein lower alkyl is as defined above.
The term "hydrox (lower) alkyl" refers to a lower alkyl as defined above which is substituted with at least one hydroxy group such as hydroxymethyl, 1-hydroxyethyl, 2- hydroxyethyl and 1-methyl-l-hydroxyethyl .
The term "lower alkanoyloxy" refers to a group represented by the formula RCO-0-, wherein RCO- is an acyl group formed by oxidation of a lower alkyl group as defined above, such as acetyl. The term "cyclo (lower) alkyl" refers to a cyclic group formed by cyclization of a lower alkyl group as defined above but contains three or more carbon atoms, and includes, for example, cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl . The term "cyclo (lower) alkyloxy" refers to the group of cyclo (lower) alkyl-O-, wherein cyclo (lower) alkyl is as defined above.
The term "aryl" may include unsubstituted or substituted aromatic hydrocarbon rings (preferably monocyclic groups), for example, phenyl, tolyl, xylyl .
Examples of the substituents are halogen atom and halo (lower) alkyl, wherein halogen atom and lower alkyl are as defined above.
The term "aryloxy" refers to a group represented by the formula ArO-, wherein Ar is aryl as defined above.
The term "heterocyclic group" may include mono- to tri-cyclic, preferably monocyclic heterocyclic group which is 5 to 14, preferably 5 to 10 membered ring having optionally substituted carbon atom and 1 to 4, preferably 1 to 3 of 1 or 2 type of hetero atoms selected from nitrogen atom, oxygen atom and sulfur atom. Examples of the heterocyclic group include furyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, furazanyl, pyranyl, pyridyl, pyridazinyl, pyrimidyl, pyrazinyl, 2-pyrrolinyl, pyrrolidinyl, 2- imidazolinyl, imidazolidinyl, 2-pyrazolinyl, pyrazolidinyl, piperidino, piperazinyl, morpholino, indolyl, benzothienyl, quinolyl, isoquinolyl, purinyl, quinazolinyl, carbazolyl, acridinyl, phenanthridinyl, benzimidazolyl, benzimidazolinyl, benzothiazolyl, phenothiazinyl. Examples of the substituent in this case include halogen, and halogen substituted lower alkyl group, wherein halogen atom and lower alkyl group are as described above.
The term "heterocyclic-oxy group" means a group represented by the formula HcO~, wherein He is a
heterocyclic group as described above.
The term "functional derivative" of A includes salts (preferably pharmaceutically acceptable salts), ethers, esters and amides. Suitable "pharmaceutically acceptable salts" include conventionally used non-toxic salts, for example a salt with an inorganic base such as an alkali metal salt (such as sodium salt and potassium salt) , an alkaline earth metal salt (such as calcium salt and magnesium salt), an ammonium salt; or a salt with an organic base, for example, an amine salt (such as methyla ine salt, dimethylamine salt, cyclohexylamine salt, benzylamine salt, piperidine salt, ethylenediamine salt, ethanolamine salt, diethanolamine salt, triethanolamine salt, tris (hydroxymethylamino) ethane salt, monomethyl- monoethanolamine salt, procaine salt and caffeine salt) , a basic a ino acid salt (such as arginine salt and lysine salt) , tetraalkyl ammonium salt and the like. These salts may be prepared by a conventional process, for example from the corresponding acid and base or by salt interchange.
Examples of the ethers include alkyl ethers, for example, lower alkyl ethers such as methyl ether, ethyl ether, propyl ether, isopropyl ether, butyl ether, isobutyl ether, t-butyl ether, pentyl ether and 1-cyclopropyl ethyl ether; and medium or higher alkyl ethers such as octyl
ether, diethylhexyl ether, lauryl ether and cetyl ether; unsaturated ethers such as oleyl ether and linolenyl ether; lower alkenyl ethers such as vinyl ether, allyl ether; lower alkynyl ethers such as ethynyl ether and propynyl ether; hydroxy (lower) alkyl ethers such as hydroxyethyl ether and hydroxyisopropyl ether; lower alkoxy (lower) alkyl ethers such as methoxymethyl ether and 1-methoxyethyl ether; optionally substituted aryl ethers such as phenyl ether, tosyl ether, t-butylphenyl ether, salicyl ether, 3, 4-di-methoxyphenyl ether and benzamidophenyl ether; and aryl (lower) alkyl ethers such as benzyl ether, trityl ether and benzhydryl ether.
Examples of the esters include aliphatic esters, for example, lower alkyl esters such as methyl ester, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, t-butyl ester, pentyl ester and 1-cyclopropylethyl ester; lower alkenyl esters such as vinyl ester and allyl ester; lower alkynyl esters such as ethynyl ester and propynyl ester; hydroxy (lower) alkyl ester such as hydroxyethyl ester; lower alkoxy (lower) alkyl esters such as methoxymethyl ester and 1-methoxyethyl ester; and optionally substituted aryl esters such as, for example, phenyl ester, tolyl ester, t-butylphenyl ester, salicyl ester, 3, 4-di-methoxyphenyl ester and benzamidophenyl ester; and aryl (lower) alkyl ester such as benzyl ester,
trityl ester and benzhydryl ester.
The amide of A mean a group represented by the formula -CONR'R", wherein each of R1 and R" is hydrogen atom, lower alkyl, aryl, alkyl- or aryl-sulfonyl, lower alkenyl and lower alkynyl, and include for example lower alkyl amides such as methylamide, ethylamide, dimethylamide and diethylamide; arylamides such as anilide and toluidide; and alkyl- or aryl-sulfonylamides such as methylsulfonylamide, ethylsulfonyl-amide and tolylsulfonylamide.
Preferred example of L and M is hydroxy which has a 5-membered ring structure of, so called, PGF type.
Preferred example A is -COOH, its pharmaceutically acceptable salt, ester or amide thereof. Preferred example B is -CH2-CH2-, which provide the structure of so-called, 13, 14-dihydro type.
Preferred example of X and X2 is that at least one of them is halogen, more preferably, both of them are halogen, especially, fluorine that provides a structure of, so called 16, 16-difluoro type.
Preferred Rx is a hydrocarbon containing 1-10 carbon atoms, preferably, 6-10 carbon atoms. Further, at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur. Examples of Rx include, for example, the following
groups :
—CH2~CH2—CH2 _CH2 _CH2 _CH2— —CH2 _CH=CH_CH2 _CH2—CH2—,
"CH_CH2 _CH~CH_CH—CH- —CH2—C=C—CH2—CH2—CH2—
—CH2—CH2 _CH_CH2 _CH (CH3) —CH2— —CH2—CH—CH2—CH2—O—CH2—, —CH—CH=CH—CH—0—CH2—,
—CH2 _C—C—CH2 _O-CH2~, —CH2~CH2~CH2 _CH2—CH2—CH2—CH2—,
—CH2~CH=CH—CH2~CH2—CH2—CH2—, —CH2 _CH2 _CH2—CH2~CH2 _CH=CH—,
—CH2 _C^C—CH2 _CH2 _CH2~CH2—, —CH2~CH2—CH_CH2~CH2~CH (CH3) —CH2—, —CH_CH2 _CH2~CH2 _CH2—CH2—CH2—CH2—,
—CH2 _CH=CH~CH2 _CH2 _CH2—CH—CH2—, —CH2—CH2—CH2—CH2—CH2—CH2—CH=CH— —CH2 _C=C—CH2 _CH2—CH2—CH2—CH2— —CH2—CH2~CH2~CH2 _CH2 _CH2—CH (CH3) —CH2— Preferred Ra is a hydrocarbon containing 1-10 carbon atoms, more preferably, 1-8 carbon atoms. Ra may have one or two side chains having one carbon atom.
The configuration of the ring and the α- and/or ω chains in the above formula (I) and (II) may be the same as or different from that of the primary PGs. However, the
present invention also includes a mixture of a compound having a primary type configuration and a compound of a non-primary type configuration.
The Examples of the typical compound in the invention are 13, 14-dihydro-15-keto-20-lower alkyl prostaglandin F compound and 13, 14-dihydro-15-keto~17- phenyl-18, 19, 20-trinor-prostaglandin F compund, the derivatives or analogs thereof.
The 15-keto-PG compound of the present invention may be in the keto-hemiacetal equilibrium by formation of a hemiacetal between hydroxy at position 11 and oxo at position 15.
If such tautomeric isomers as above are present, the proportion of both tautomeric isomers varies with the structure of the rest of the molecule or the kind of the substituent present. Sometimes one iso er may predominantly be present in comparison with the other. However, it is to be appreciated that the 15-keto-PG compounds used in the invention include both isomers. Further, while the compounds used in the invention may be represented by a structure formula or name based on keto- type regardless of the presence or absence of the isomers, it is to be noted that such structure or name does not intend to exclude the hemiacetal type compound. In the present invention, any of isomers such as the
individual tautomeric isomers, the mixture thereof, or optical isomers, the mixture thereof, a racemic mixture, and other steric isomers may be used in the same purpose.
Some of the compounds used in the present invention may be prepared by the method disclosed in USP Nos.
5,073,569, 5,166,174, 5,221,763, 5,212,324 and 5,739,161 and U.S. patent application Ser. No. 09011218 (these cited references are herein incorporated by reference) .
The term "treatment", "treat" or "treating" used herein includes any means of control such as prevention, care, relief of the condition, attenuation of the condition and arrest of progression.
In the present invention, the term "a subject in need of such treatment" means a subject who is suffering from a disease in which a reduction in his/her intraocular pressure is desirable, for example, glaucoma and ocular hypertension, or a subject who is susceptible to suffering from such disease as discussed above. The subject may be any mammalian subject including human beings. According to the present invention, an eye drop composition comprising the above-described 15-keto- prostaglandin compound as an active ingredient and a diluent suitable for ocular administration are prepared and administrated. The eye drop composition may be any of those manufactured according to any procedures known to the
art of ophthalmic field. For example, the composition may be an ophthalmic solution or suspension that is prepared by dissolving or suspending the active ingredients in a sterile aqueous diluent such as physiological saline, buffering solution and the like. Alternatively, the composition may be that provided as a powder composition obtained by dry blending the ingredients, which is to be dissolved with an aqueous diluent suitable for ocular administration before use. Eye drop compositions described in EP-A-0406791 (the disclosure of the publication is incorporated herein by reference) are preferred for the present invention.
If desired, additives ordinarily used in conventional eye drops may be added to the composition. Such additives may include isotonizing agents (e.g., sodium chloride), buffering agent (e.g., boric acid, sodium monohydrogenphosphate, sodium dihydrogenphosphate) , preservatives (e.g., benzalkonium chloride, benzethonium chloride and chlorobutanol) , thickeners (e.g., saccharide such as lactose, mannitol and maltose; e.g., hyaluronic acid or its salt such as sodium hyaluronate, potassium hyaluronate; e.g., mucopolysaccharide such as chondroitin sulfate; e.g., sodium polyacrylate, carboxyvinyl polymer and crosslinked polyacrylate) . The eye drop composition may be formulated as a
sterile unit dose type product containing no preservatives. The concentration of the active ingredient and the administration frequency of the eye drops used in the present invention may vary depending on the active ingredients used in the eye drops, the kind, such as animals or human beings, age, weight, and sex of the subject to be treated, symptoms to be treated, effects of treatment to be desired, administration methods, period of treatment and the like. Accordingly, suitable concentration and administration frequency may be chosen as desired. Taking an example of isopropyl unoprostone, which is one of preferred 15-keto prostaglandin compounds used in the present invention, eye drops containing 0.01 - 1.0%, preferably 0.05 - 0.5% of isopropyl unoprostone may be ordinarily administered to an adult human at least once a day.
As shown in the following examples, it was found in the present invention that even in the same concentration of an active ingredient, the increase in the single administration volume will increase the IOP reducing effects and also extend the retention time of the IOP reducing effects. Accordingly, in the present invention, the single administration volume per eye is at least 20 μL, preferably at least 25 μ L, more preferably at least 30 μ L further more preferably at least 35 μ L .
According to the present invention, upper limit of the single administration volume is not particularly limited. The upper limit may be about 60 μL per eye.
The single administration volume of the eye drops ■ may be adjusted by any conventional method, for example, by selecting suitable container or eyedropper, which can dispense the desired volume.
Accordingly, the present invention also provides an eye drop product comprising the above described composition which is incorporated in an eye drop container of which single administration volume is at least 20 μ L/eye, preferably at least 25 μ L/eye, more preferably at least 30 μ L/eye and further more preferably at least 35 μ L/eye.
When the single drop volume is less than 20μL, which is another form of the present invention, the "single administration" may be two to three drops. In such a form, too, it is possible to obtain the same effects as in the present invention.
In the present invention, the eye drop composition may include one active ingredient only or a combination of two or more active ingredients. In a combination of plural active ingredients, their respective contents may be suitably increased or decreased in consideration of their effects, safety and the like. Further, the eye drop composition may suitably
include other pharmacologically active ingredients as far as they do not contradict the object of the present invention.
The further details of the present invention will follow with reference to the examples, which, however, are not intended to limit the present invention. Example 1 Test method
0.12% isopropyl unoprostone eye drops (0.12% Rescula ® eye drops) or 0.5% timolol maleate eye drops (0.5% Timoptol eye drops) was administered once to one eye of albino rabbits (20 L/eye or 40μL/eye). The control group received physiological saline solution. IOP was measured with a pneumatonometer (Applanation Pneumatonograph™, Alcon Laboratories, Inc., TX, USA) before the administration and at one, two, four, six and eight hours after the administration under topical anesthesia with 0.4% oxybuprocaine hydrochloride (Benoxil® 0.4% solution, Santen Pharmaceutical Co., Ltd. Osaka, Japan) Results
The results of IOP measurement are shown in Figs. 1 and 2.
The administration of isopropyl unoprostone eye drops in 20 μ L/eye and 40 μ L/eye lowered the IOP. In both of the 20 μ L/eye group and the 40 μ L/eye group administered with
isopropyl unoprostone eye drops, the maximum IOP reduction was seen at two hours after the administration, which were
3.5 + 0.6 and 4.6±0.6mmHg, respectively. In the 20 μ L/eye group, the maximum IOP reduction was seen at two hours after the administration and the IOP returned to its initial level at six hours after the administration. In the 40 μ L/eye group, on the other hand, the maximum IOP reduction greater than that in the 20 μ L/eye group was seen at two hours after the administration, and the IOP reducing effects was retained at six hours after the administration. From two to six hours after the administration, the IOP reduction in the 40μL/eye group administered with isopropyl unprostone eye drops was greater than that in the 20μL/eye group by 1.0 - 1.3mmHg. The administration of isopropyl unoprostone eye drops increased the IOP reducing effects and extended the retention time of said effects depending on the administration volume.
On the other hand, the IOP reductions after the administration of both 20μL/eye and 40μL/eye timolol maleate eye drops were same. In both the 20μL/eye group and the 40μL/eye group administered with timolol maleate eye drops, the maximum IOP reduction was seen at one hour after the administration, which were 2.9 ±0.8 and 3.0 +
0.6mmHg, respectively. The increase in the administration volume of timolol maleate eye drops neither increased the
IOP reducing effects nor extended the retention time of said effects.
These results indicate that the increase in the administration volume of timolol maleate eye drops will not increase the IOP reducing effects, but the increase in the administration volume of isopropyl unoprostone eye drops will increase the IOP reducing effects and also will extend the retention time of said effects. Example 2 Test method
0.12% isopropyl unoprostone eye drops (0.12% Rescula eye drops) was administered once to one eye of albino rabbits at an administration volume of 30μL/eye, 40μL/eye, 50μL/eye or 60μL/eye. The control group received vehicle at 30μL/eye. IOP was measured with a pneumatonometer (Applanation Pneu atonograph™, Alcon Laboratories, Inc.) before the administration and at six hours after the administration under topical anesthesia with 0.4% oxybuprocaine hydrochloride (Benoxil ® 0.4% solution, Santen Pharmaceutical Co., Ltd.) Results
The results of IOP change at six hours after the administration from pre-treatment are shown in Table 1.
The IOP reducing effects after the administration of isopropyl unoprostone eye drops at 30, 40, 50 or 60μL/eye
were increased in a volume dependent manner.
The results indicate that the increase in the administration volume of isopropyl unoprostone eye drops will increase the IOP reducing effects.
Table 1. Effect of isopropyl unoprostone eye drops on intraocular pressure (ΔlOP:mmHg) in albino rabbits
Group n Δ IOP (mmHg)
Vehicle 30μL 6 2.0±0.7
Rescula® 30 μL 7 -0.9+ 0.7
Rescula® 40 μL 6 -1.8±1.6
Rescula® 50 μL 6 -2.7±0.8
Rescula® 60 μL 6 -3.5±0.8
(Mean + SE)
Claims (38)
1. A method for treating ocular hypertension and glaucoma, which comprises an administration of eye drops comprising a 15-keto-prostaglandin compound as an active ingredient to a subject in need of such treatment in a single administration volume of at least 20μL/eye.
2.- The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a compound as shown by the following general formula (I) .
wherein L, M and N are hydrogen, hydroxy, halogen, lower alkyl, hydroxy (lower) alkyl or oxo, wherein at least one of the groups of L and M is a group other than hydrogen, and a five-membered ring may have at least one double bond; A is -CH2OH, -COCH2OH, -COOH or functional derivatives thereof;
B is -CH2-CH2-, -CH=CH- or -C≡C-;
Rx is a saturated or unsaturated lower to medium bivalent aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, alkyl, hydroxy, oxo, aryl or a heterocyclic group and at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur atom. Ra is a saturated or unsaturated lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, oxo, hydroxy, lower alkoxy, lower alkanoyloxy, cyclo (lower) alkyl, cyclo (lower) alkyloxy, aryl, aryloxy, heterocyclic group or heterocyclic-oxy group; cyclo (lower) alkyl; cyclo (lower) alkyloxy; aryl; aryloxy; heterocyclic group; heterocyclic-oxy group.
3. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 13, 14-dihydro-15-keto- prostaglandin compound.
4. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 15-keto-20-lower alkyl- prostaglandin compound.
5. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 13, 14-dihydro-15-keto~20- lower alkyl-prostaglandin compound.
6. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 15-keto-20-ethyl- prostaglandin compound.
7. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 13, 14-dihydro-15- keto-20- ethyl-prostaglandin compound.
8. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 15-keto-prostaglandin F compound.
9. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 13, 14-dihydro-15-keto- 20- ethyl-prostaglandin F2α.
10. The method as described in Claim 1 wherein the 15- keto-prostaglandin compound is a 13, 14-dihydro-15-keto- 20- ethyl-prostaglandin F2α isopropyl ester.
11. The method as described in Claim 1, wherein the single administration volume is at least 25μL/eye.
12. The method as described in Claim 1, wherein the single administration volume is at least 30μL/eye.
13. An eye drop composition for treating ocular hypertension and glaucoma comprising a 15-keto- prostaglandin compound as an active ingredient, which is administrated to a subject in need of such treatment in a single administration volume of at least 20μL/eye.
14. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a compound as shown by the following general formula (I) . wherein L, M and N are hydrogen, hydroxy, halogen, lower alkyl, hydroxy (lower) alkyl or oxo, wherein at least one of the groups of L and M is a group other than hydrogen, and a five-membered ring may have at least one double bond; A is -CH2OH, -COCH2OH, -COOH or functional derivatives thereof;
B is -CH2-CH2-, -CH=CH- or -C≡C-;
R-L is a saturated or unsaturated lower to medium bivalent aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, alkyl, hydroxy, oxo, aryl or a heterocyclic group and at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur atom.
Ra is a saturated or unsaturated lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, oxo, hydroxy, lower alkoxy, lower alkanoyloxy, cyclo (lower) alkyl, cyclo (lower) alkyloxy, aryl, aryloxy, heterocyclic group or heterocyclic-oxy group; cyclo (lower) alkyl; cyclo (lower) alkyloxy; aryl; aryloxy; heterocyclic group; heterocyclic-oxy group.
15. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 13, 14-dihydro-15-keto- prostaglandin compound.
16. The composition as described in Claim 13 wherein the
15-keto-prostaglandin compound is a 15-keto-20-lower alkyl- prostaglandin compound.
17. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 13, 14-dihydro-15-keto- 20-lower alkyl-prostaglandin compound.
18. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 15-keto-20-ethyl- prostaglandin compound.
19. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 13, 14-dihydro-15- keto-
20-ethyl-prostaglandin compound.
20. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 15-keto-prostaglandin F compound.
21. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 13, 14-dihydro-15-keto- 20-ethyl-prostaglandin F2α .
22. The composition as described in Claim 13 wherein the 15-keto-prostaglandin compound is a 13, 14-dihydro-15-keto- 20-ethyl-prostaglandin F2α isopropyl ester.
23. The composition as described in Claim 13, wherein the single administration volume is at least 25μL/eye.
24. The composition as described in Claim 13, wherein the single administration volume is at least 30μL/eye.
25. An eye drop product comprising the composition as described in any of Claims 13-24, wherein the composition is incorporated in an eye drop container of which single administration volume is at least 20 μ L/eye.
26. Use of a 15-keto-prostaglandin compound for manufacturing an eye drop composition for treating ocular hypertension and glaucoma, wherein the eye drop composition is administrated to a subject in need of such treatment in a single administration volume of at least 20 μ L/eye.
27. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a compound as shown by the following general formula (I) .
wherein L, M and N are hydrogen, hydroxy, halogen, lower alkyl, hydroxy (lower) alkyl or oxo, wherein at least one of the groups of L and M is a group other than hydrogen, and a five-membered ring may have at least one double bond; A is -CH2OH, -COCH2OH, -COOH or functional derivatives thereof;
B is -CH2-CH2-, -CH=CH- or -C≡≡C-; R-L is a saturated or unsaturated lower to medium bivalent aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, alkyl, hydroxy, oxo, aryl or a heterocyclic group and at least one of carbon atom in the aliphatic hydrocarbon is optionally substituted by oxygen, nitrogen or sulfur atom.
Ra is a saturated or unsaturated lower to medium aliphatic hydrocarbon residue, which is unsubstituted or substituted by halogen, oxo, hydroxy, lower alkoxy, lower alkanoyloxy, cyclo (lower) alkyl, cyclo (lower) alkyloxy, aryl, aryloxy, heterocyclic group or heterocyclic-oxy group; cyclo (lower) alkyl; cyclo (lower) alkyloxy; aryl; aryloxy; heterocyclic group; heterocyclic-oxy group.
28. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 13, 14-dihydro-15-keto- prostaglandin compound.
29. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 15-keto-20-lower alkyl- prostaglandin compound.
30. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 13, 14-dihydro-15-keto-20-lower alkyl-prostaglandin compound.
31. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 15-keto-20-ethyl- prostaglandin compound.
32. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 13, 14-dihydro-15- keto-20- ethyl-prostaglandin compound.
33. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 15-keto-prostaglandin F compound.
34. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 13, 14-dihydro-15-keto- 20- ethyl-prostaglandin F2α.
35. Use as described in Claim 26 wherein the 15-keto- prostaglandin compound is a 13, 14-dihydro-15-keto- 20- ethyl-prostaglandin F2α isopropyl ester.
36. Use as described in Claim 26, wherein the single administration volume is at least 25μL/eye.
37. Use as described in Claim 26, wherein the single administration volume is at least 30μL/eye.
38. Use as described in any one of Claims 26-37, wherein the composition is provided as an eye drop product incorporated in an eye drop container of which single administration volume is at least 20 μ L/eye.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60/290,355 | 2001-05-14 |
Publications (1)
Publication Number | Publication Date |
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AU2002255346A1 true AU2002255346A1 (en) | 2002-11-25 |
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