WO2011158833A1 - Hcv感染症治療剤 - Google Patents
Hcv感染症治療剤 Download PDFInfo
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- WO2011158833A1 WO2011158833A1 PCT/JP2011/063602 JP2011063602W WO2011158833A1 WO 2011158833 A1 WO2011158833 A1 WO 2011158833A1 JP 2011063602 W JP2011063602 W JP 2011063602W WO 2011158833 A1 WO2011158833 A1 WO 2011158833A1
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- hcv infection
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- 0 CC=CC(N(*)*)=O Chemical compound CC=CC(N(*)*)=O 0.000 description 1
- UXVCZJATZQAXPA-MMZDYOQCSA-N Cc(nc1)c[n]1-c(ccc(/C=C/C(N(C1)[C@@H]1c1ccccc1)=O)c1)c1OC Chemical compound Cc(nc1)c[n]1-c(ccc(/C=C/C(N(C1)[C@@H]1c1ccccc1)=O)c1)c1OC UXVCZJATZQAXPA-MMZDYOQCSA-N 0.000 description 1
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- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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- A61K31/4164—1,3-Diazoles
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- A61K31/445—Non condensed piperidines, e.g. piperocaine
- A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
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- A61K31/5375—1,4-Oxazines, e.g. morpholine
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- C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C07D233/56—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms
- C07D233/61—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring carbon atoms with hydrocarbon radicals, substituted by nitrogen atoms not forming part of a nitro radical, attached to ring nitrogen atoms
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- C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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- C07D401/10—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing aromatic rings
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- C07D498/04—Ortho-condensed systems
Definitions
- the present invention relates to a therapeutic agent for HCV infection. More specifically, the present invention relates to a therapeutic agent for HCV infection containing a compound having an imidazolylbenzene structure.
- Hepatitis C virus (hereinafter referred to as "HCV") is an enveloped single-stranded RNA virus discovered in 1989 as a major causative virus for non-A non-B hepatitis after blood transfusion, and its genome Consists of single-stranded (+) RNA and is classified into the genus Hepativirus of the Flaviviridae family. It is estimated that there are 100 million to 200 million people infected with HCV worldwide. However, since HCV can circumvent the immune mechanism of the infected host, an infected person with HCV usually develops chronic hepatitis, and the pathology progresses to cirrhosis or liver cancer. About 90% of the causes of liver cancer are said to be HCV, and many patients die each year due to liver cancer that develops due to HCV infection.
- Treatment methods for HCV infection include, for example, removal of the patient's blood outside the body, virus removal therapy that returns the blood from which HCV in the blood has been removed, and improvement of liver function using liver function improvers such as glycyrrhizin and ursodeoxycholic acid.
- liver protection therapy for preventing the worsening of hepatitis and antiviral therapy aiming at complete healing by eliminating HCV from the body by administration of antiviral agents such as interferon and peginterferon are known.
- Non-patent document 1 and Non-patent document 2 the most effective treatment for HCV infection is known to be combined with peginterferon and ribavirin (1- ⁇ -D-ribofuranosyl-1H-1,2,4-triazole-3-carboxamide)
- Non-patent document 1 and Non-patent document 2 the most effective treatment for HCV infection is known to be combined with peginterferon and ribavirin (1- ⁇ -D-ribofuranosyl-1H-1,2,4-triazole-3-carboxamide)
- Patent Document 1 and Patent Document 2 a substance that inhibits the activity or expression of an enzyme involved in sphingolipid biosynthesis or cholesterol biosynthesis can be used to prevent or prevent HCV infection. It has been proposed to be used for treatment.
- An object of the present invention is to provide a new therapeutic agent for HCV infection.
- R 1 represents a hydrogen atom, a halogen atom or a C 1-6 alkyl group
- R 2 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group
- R 3 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group
- R 4 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkoxy group, a C 1-6 alkylsulfonyl group, a C 1-6 alkoxy C 1-4 alkyl Group, hydroxy C 1-6 alkyl group, halo C 1-6 alkyl group, amino group, formyl group, C 2-4 alkanoyl group, nitro group or cyano group
- R 5 is formula:
- R 6 is selected from the group consisting of a halogen atom, a C 1-6 alkyl group, a halo C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkylene group, a pyrazolyl group, and a C 6-14 aryl group.
- R 7 represents a hydrogen atom, a C 1-6 alkyl group or a hydroxy C 1-6 alkyl group, or R 6 and R 7 together with the nitrogen atom to which they are bonded,
- HCV infection containing a compound represented by the formula: wherein R 1 , R 2 , R 3 , R 4 and R 5 are as defined in claim 1, or a pharmaceutically acceptable salt thereof.
- Disease treatment agent [3].
- HCV infection containing a compound represented by the formula: wherein R 1 , R 2 , R 3 , R 4 and R 5 are as defined in claim 1, or a pharmaceutically acceptable salt thereof.
- Disease treatment agent [4].
- a therapeutic agent for HCV infection comprising a compound represented by formula (I) or a pharmaceutically acceptable salt thereof and another therapeutic agent for HCV infection; [5].
- a compound represented by the general formula (I) or a pharmaceutically acceptable salt thereof is: (E) -1-[(1S) -1- (4-Fluorophenyl) ethyl] -3- [3-methoxy-4- (4-methyl-1H-imidazol-1-yl) benzylidene] piperidine-2- on, (E) -1-[(1R) -1- (4-fluorophenyl) -2-hydroxyethyl] -3- [3-methoxy-4- (4-methyl-1H-imidazol-1-yl) benzylidene] Piperidin-2-one, (E)-(4R, 9aS) -7- [3-Methoxy-4- (4-methyl-1H-imidazol-1-yl) benzylidene] -4- (3,4,5-trifluorophenyl) hexahydro Pyrido [2,1-c] [1,4] oxazin-6-one, 3- [3
- kits for treating HCV infection comprising the compound represented by the general formula (I) according to the above [1] or a pharmaceutically acceptable salt thereof and another therapeutic agent for HCV infection; [12].
- the therapeutic agent for HCV infection contains another therapeutic agent for HCV infection together with the compound or a pharmaceutically acceptable salt thereof; [14].
- a therapeutic agent for HCV infection containing the compound represented by the general formula (I) or the pharmaceutically acceptable salt thereof according to [1] above, for use in combination with another therapeutic agent for HCV infection Use of the compound or a pharmaceutically acceptable salt thereof for the manufacture of a therapeutic agent for HCV infection; [15].
- the HCV infection therapeutic agent is a HCV infection therapeutic agent for simultaneous or sequential administration with other therapeutic agents for HCV infection; [16].
- a method for treating HCV infection comprising administering to a subject in need of the compound represented by the general formula (I) described in [1] above or a pharmaceutically acceptable salt thereof. ; [17].
- the therapeutic method according to [17] above, wherein the compound or a pharmaceutically acceptable salt thereof and another therapeutic agent for HCV infection are administered simultaneously or sequentially.
- R 1 , R 2 , R 3 , R 4 and R 5 are as defined in [1], or a pharmaceutically acceptable salt thereof is an HCV replica
- a therapeutic agent for HCV infection containing a compound represented by general formula (I) or a pharmaceutically acceptable salt thereof and another therapeutic agent for HCV infection such as interferon the strongly suppresses HCV replication and is extremely effective in the treatment of HCV infection.
- the therapeutic agent for HCV infection of the present invention has the general formula (I) as an active ingredient.
- R 1 represents a hydrogen atom, a halogen atom or a C 1-6 alkyl group
- R 2 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group
- R 3 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group
- R 4 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkoxy group, a C 1-6 alkylsulfonyl group, a C 1-6 alkoxy C 1-4 alkyl Group, hydroxy C 1-6 alkyl group, halo C 1-6 alkyl group, amino group, formyl group, C 2-4 alkanoyl group, nitro group or cyano group
- R 5 is formula:
- R 6 is selected from the group consisting of a halogen atom, a C 1-6 alkyl group, a halo C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkylene group, a pyrazolyl group, and a C 6-14 aryl group.
- R 7 represents a hydrogen atom, a C 1-6 alkyl group or a hydroxy C 1-6 alkyl group, or R 6 and R 7 together with the nitrogen atom to which they are bonded,
- Halogen atom means a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.
- halogen atom include, for example, a fluorine atom, a chlorine atom and the like, more preferably, a fluorine atom and the like.
- C 1-6 alkyl group means a linear or branched alkyl group having 1 to 6 carbon atoms.
- Specific examples thereof include a methyl group, an ethyl group, a 1-propyl group ( n-propyl group), 2-propyl group (i-propyl group), 2-methyl-1-propyl group (i-butyl group), 2-methyl-2-propyl group (t-butyl group), 1-butyl Group (n-butyl group), 2-butyl group (s-butyl group), 1-pentyl group, 2-pentyl group, 3-pentyl group, 2-methyl-1-butyl group, 3-methyl-1-butyl Group, 2-methyl-2-butyl group, 3-methyl-2-butyl group, 2,2-dimethyl-1-propyl group, 1-hexyl group, 2-hexyl group, 3-hexyl group, 2 -Methyl-1-pentyl group, 3-methyl-1-pentyl group, 4-methyl-1-pentyl group, 2- Methyl-2-pentyl group, 3-methyl-2-pentyl group, 4-
- C 1-6 alkoxy group means an oxy group to which the above-defined “C 1-6 alkyl group” is bonded. Specific examples thereof include methoxy group, ethoxy group, 1-propyloxy group, and the like.
- the “C 3-6 cycloalkyl group” means a monocyclic saturated aliphatic hydrocarbon group having 3 to 6 carbon atoms, and specific examples thereof include, for example, a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group.
- the group “C 3-6 cycloalkoxy group” means an oxy group to which the above-defined “C 3-6 cycloalkyl group” is bonded, and specific examples include, for example, a cyclopropyloxy group , A cyclobutyloxy group, a cyclopenthioxy group, and a cyclohexyloxy group.
- C 1-6 alkylsulfonyl group means a sulfonyl group to which the above-defined “C 1-6 alkyl group” is bonded. Specific examples thereof include a methylsulfonyl group, an ethylsulfonyl group, 1 -Propylsulfonyl group, 2-propylsulfonyl group, butylsulfonyl group, pentylsulfonyl group and the like.
- C 1-6 alkoxy C 1-4 alkyl group means a linear or branched alkyl group having 1 to 4 carbon atoms to which the above-defined “C 1-6 alkoxy group” is bonded.
- Specific examples include, for example, methoxymethyl group, ethoxymethyl group, 1-propyloxymethyl group, 2-propyloxymethyl group, 2-methyl-1-propyloxymethyl group, 2-methyl-2-propyloxymethyl group 1-butyloxymethyl group, methoxyethyl group, ethoxyethyl group, 1-propyloxyethyl group, 2-propyloxyethyl group, 2-methyl-1-propyloxyethyl group, 2-methyl-2-propyloxy Examples include an ethyl group and a 1-butyloxyethyl group.
- “Hydroxy C 1-6 alkyl group” means a group in which a hydroxy group is substituted with the above-defined “C 1-6 alkyl group”. Specific examples thereof include a hydroxymethyl group, 1-hydroxy group, and the like. Examples include an ethyl group, a 2-hydroxyethyl group, a 1-hydroxypropyl group, a 2-hydroxypropyl group, and a 3-hydroxypropyl group.
- halo C 1-6 alkyl group means a group in which a halogen atom is substituted with the above-defined “C 1-6 alkyl group”. Specific examples thereof include a fluoromethyl group and a difluoromethyl group. Trifluoromethyl group, 1-fluoroethyl group, 2-fluoroethyl group, 1-fluoropropyl group, 2-fluoropropyl group, 3-fluoropropyl group, chloromethyl group, 1-chloroethyl group, 2-chloroethyl group, 1-chloropropyl group, 2-chloropropyl group, 3-chloropropyl group, bromomethyl group, 1-bromoethyl group, 2-bromoethyl group, 1-bromopropyl group, 2-bromopropyl group, 3-bromopropyl group, iodomethyl Group, 1-iodoethyl group, 2-iodoethyl group, 1-iod
- the “C 2-4 alkanoyl group” means a carbonyl group to which the above-defined “C 1-6 alkyl group” is bonded. Specific examples thereof include acetyl group, propionyl group, isopropionyl group, Examples include butyryl group, isobutyryl group, valeryl group, isovaleryl group, and pivaloyl group.
- the “C 3-6 cycloalkylene group” means a divalent group derived by removing one arbitrary hydrogen atom from the above-defined “C 3-8 cycloalkyl group”.
- Examples thereof include a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, and a cyclooctylene group.
- the “C 6-14 aryl group” means an aromatic hydrocarbon cyclic group having 6 to 14 carbon atoms, and specific examples thereof include a phenyl group and a naphthyl group.
- the “C 7-15 aralkyl group” is formed by bonding the “C 6-14 aryl group” defined above to the “C 1-6 alkyl group” defined above and having 6 to 15 carbon atoms. It means an aromatic hydrocarbon cyclic group, and specific examples thereof include benzyl group, phenethyl group, phenylpropyl group, 1-naphthylmethyl group, 2-naphthylmethyl group and the like.
- the “C 3-6 cycloalkyl C 1-4 alkyl group” is a group formed by bonding the above-defined “C 3-6 cycloalkyl group” to the “C 1-6 alkyl group” defined above. Specific examples include, for example, cyclopropylmethyl group, 1-cyclopropylethyl group, 2-cyclopropylethyl group, 1-cyclopropylpropyl group, 2-cyclopropylpropyl group, 3-cyclopropylpropyl group. Groups and the like.
- N-C 7-15 aralkylamino group means "C 7-15 aralkyl group” defined above is a group formed by bonding to an amino group, specific examples include, for example, N -Benzylamino group, N-phenethylamino group, N-phenylpropylamino group, N- (1-naphthylmethyl) amino group, N- (2-naphthylmethyl) amino group and the like.
- R 1 , R 2 , R 3 , R 4 and R 5 have the following meanings.
- R 1 represents a hydrogen atom, a halogen atom or a C 1-6 alkyl group. Among them, a hydrogen atom or a C 1-6 alkyl group is preferable, and a hydrogen atom is particularly preferable.
- R 2 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group, and among them, a hydrogen atom or a C 1-6 alkyl group is preferable, and a hydrogen atom is particularly preferable.
- R 3 represents a hydrogen atom, a C 1-6 alkyl group or a C 1-6 alkoxy C 1-4 alkyl group. Among them, a hydrogen atom or a C 1-6 alkyl group is preferable, and a hydrogen atom is particularly preferable.
- R 4 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkoxy group, a C 1-6 alkylsulfonyl group, a C 1-6 alkoxy C 1-4 alkyl Group, hydroxy C 1-6 alkyl group, halo C 1-6 alkyl group, amino group, formyl group, C 2-4 alkanoyl group, nitro group or cyano group, among which halogen atom, C 1-6 alkoxy group A C 1-6 alkoxy C 1-4 alkyl group, a halo C 1-6 alkyl group, a hydroxy C 1-6 alkyl group or a C 2-4 alkanoyl group is preferred.
- R 5 has the formula:
- R 6 is selected from the group consisting of a halogen atom, a C 1-6 alkyl group, a halo C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkylene group, a pyrazolyl group, and a C 6-14 aryl group.
- R 7 represents a hydrogen atom, a C 1-6 alkyl group or a hydroxy C 1-6 alkyl group, or R 6 and R 7 together with the nitrogen atom to which they are bonded,
- R 60 is selected from the group consisting of a halogen atom, a C 1-6 alkyl group, a halo C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkylene group, a pyrazolyl group, and a C 6-14 aryl group.
- R 70 represents a hydrogen atom, a C 1-6 alkyl group or a hydroxy C 1-6 alkyl group) or the following table:
- R 1A , R 2A , R 3A and R 4A have the same meanings as R 1 , R 2 , R 3 and R 4 , respectively, and R 5A has the formula:
- R 60 is selected from the group consisting of a halogen atom, a C 1-6 alkyl group, a halo C 1-6 alkyl group, a C 1-6 alkoxy group, a C 3-6 cycloalkylene group, a pyrazolyl group, and a C 6-14 aryl group.
- R 70 represents a hydrogen atom, a C 1-6 alkyl group or a hydroxy C 1-6 alkyl group) or the following table:
- the compound of the general formula (I) of the present invention can be converted into a pharmaceutically acceptable salt thereof by a conventional method, and a pharmaceutically acceptable salt of the compound of the general formula (I) is used as an active ingredient. It can also be used. Specific examples of such salts include sulfate, nitrate, perchlorate, phosphate, carbonate, bicarbonate, hydrofluoride, hydrochloride, hydrobromide, iodide, and the like.
- Inorganic acid salts such as hydrohalides; organic carboxylates such as acetate, oxalate, maleate, tartrate, fumarate and citrate; for example, methanesulfonate, trifluoromethanesulfonate Organic sulfonates such as ethanesulfonate, benzenesulfonate, toluenesulfonate, camphorsulfonate; amino acid salts such as aspartate and glutamate.
- organic carboxylates such as acetate, oxalate, maleate, tartrate, fumarate and citrate
- methanesulfonate trifluoromethanesulfonate
- Organic sulfonates such as ethanesulfonate, benzenesulfonate, toluenesulfonate, camphorsulfonate
- amino acid salts such as aspartate and glutamate.
- the compound of the general formula (I) of the present invention or a pharmaceutically acceptable salt thereof can be converted into a solvate by a conventional method.
- the solvate include alcohol hydrates such as hydrates and 1-propanol solvates.
- the compound of the general formula (I) or a pharmaceutically acceptable salt thereof and a solvate thereof can be converted into an amorphous form or various crystalline forms by a conventional method.
- amorphous, and various crystal forms for example, International Publication No. WO2007 / 058304, International Publication No. WO2006 / 046575, International Publication No. WO2009 / 096349. These can also be used. However, it is not particularly limited to these descriptions.
- the compound of general formula (I) is included in the range of the compound as described in the claim of WO2005 / 115990 (patent document 3) or WO2007 / 060821 (patent document 4), and the test of this invention
- Many of the compounds whose pharmacological effects were recognized in the examples are specifically described in the examples of these international publications.
- Compounds that are not described in the examples can be produced using known compounds or commercially available compounds as starting materials according to the methods described in the International Publication, in addition to those described in the reference examples.
- the compound of the general formula (I) of the present invention As a result of examining the HCV replication inhibitory effect and cytotoxicity of the compound of the general formula (I) of the present invention by a replicon assay method using HCV subgenomic replicon cells, the compound of the general formula (I) was found to have strong HCV replication. In addition to exerting an inhibitory effect, on the other hand, it has been found that the compounds of general formula (I) have low cytotoxicity. In addition, the compound of the general formula (I) of the present invention not only exhibits a more potent HCV replication inhibitory effect when used in combination with other therapeutic agents for HCV infection, such as interferon such as interferon ⁇ -2b. On the other hand, it was revealed that the cytotoxicity in the combination was low. Therefore, the compound of general formula (I) or a pharmaceutically acceptable salt thereof is useful as a therapeutic agent for HCV infection.
- examples of the HCV infection include hepatitis C, cirrhosis caused by HCV infection, liver fibrosis, and liver cancer.
- treatment of HCV infection means administering a desired drug to an HCV-infected patient to extinguish or reduce HCV and cure or alleviate symptoms due to HCV infection.
- HCV infection such as administration before infection with HCV to prevent HCV infection, inhibition of HCV proliferation after HCV infection, and progression to liver cirrhosis, liver fibrosis, liver cancer, etc.
- compounds of the general formula (I) or pharmaceutically acceptable salts thereof are examples of the general formula (I) or pharmaceutically acceptable salts thereof.
- the compound of general formula (I) or a pharmaceutically acceptable salt thereof can be used for the treatment of HCV infection alone or in combination with other therapeutic agents for HCV infection.
- Another therapeutic agent for HCV infection that can be used in combination is preferably interferon.
- the interferon may be any type of interferon ⁇ , ⁇ , ⁇ , and may be not only a natural type but also various genetically modified interferons such as PEG (PEG) interferon and consensus interferon.
- PEG PEG
- any of these natural and recombinant interferon mutants, fusion proteins, and fragments can be used as long as they retain their original interferon activity.
- interferon ⁇ and ⁇ are particularly preferable.
- interferon ⁇ -2b [Interferon alfa-2b (CAS registry No. 98530-12-2)]
- peginterferon ⁇ -2b [Peginterferon alfa-2b (CAS registry No. 215647-85-1)]
- the various interferons used in the present invention can be produced by genetic engineering techniques, and for example, commercially available products can be purchased and used.
- antiviral agents for HCV infection that can be used in combination with the compound of general formula (I) or a pharmaceutically acceptable salt thereof include antiviral agents such as nucleic acid analogs. More specifically, examples of antiviral agents such as nucleic acid analogs include ribavirin (CAS registry No. 36791-04-5). Ribavirin can be produced by the method described in US Pat. No. 3,798,209, or a commercially available product can be purchased and used.
- NS3, NS5A, NS4B which are necessary for HCV genome replication
- protease inhibitors that inhibit the activity of enzymes that act on NS proteins such as NS5B
- polymerase inhibitors that inhibit RNA polymerase necessary for HCV transcription, and the like.
- protease inhibitors include terraprevir [Telaprevir (CAS registry No. 402957-28-2)], boceprevir (CAS registry No. 394730-60-0)], danoprevir [(CAS registry No.
- protease inhibitors such as TMC435350 (CAS registry No. 923604-59-5), and polymerase inhibitors include R1626 and R7128 (see WO2007065829), firibibvir (CAS registry No. 877130). -29-5)], MK0608 (CAS registry No. 443642-29-3) and the like, and the like (refer to NATURE REVIEWS DRUG DISCOVERY VOL.7, OCT, 2008, P799-800).
- two or more of the above-mentioned agents may be used.
- it is preferable to use the interferon and ribavirin it is particularly preferable to use the interferon ⁇ -2b and ribavirin.
- the drug that can be used in combination with the compound of the general formula (I) of the present invention or a pharmaceutically acceptable salt thereof is caused by, for example, HCV infection.
- HCV infection for example, antiviral agents, anti-inflammatory agents, immunopotentiators and the like used for the prevention or treatment of hepatitis C, cirrhosis, liver fibrosis, liver cancer and the like can also be mentioned.
- the dose of the compound of the general formula (I) of the present invention or a pharmaceutically acceptable salt thereof varies depending on the symptom level, age, sex, body weight, dosage form, type of salt, etc. of the subject to be administered.
- the compound of general formula (I) or a pharmaceutically acceptable salt thereof When used in combination with another therapeutic agent for HCV infection, the compound of general formula (I) of the present invention or a pharmaceutically acceptable salt thereof
- the salt and other therapeutic agent for HCV infection may be administered at the same time.
- the compound of general formula (I) or a pharmaceutically acceptable salt thereof and the other therapeutic agent for HCV infection may be administered at intervals of administration. Each may be administered sequentially.
- the administration method, administration interval, administration sequence, etc. can be arbitrarily determined according to the degree of symptoms, age, sex, body weight, dosage form, etc. of the subject to be administered.
- the dose of the compound of general formula (I) or a pharmaceutically acceptable salt thereof and the dose of other therapeutic agent for HCV infection of the present invention are the compound of general formula (I) or a pharmaceutically acceptable salt thereof.
- an acceptable salt in general, in the case of an adult, about 30 ⁇ g to 10 g, preferably 100 ⁇ g to 5 g, more preferably 100 ⁇ g to 100 mg by oral administration per day, and 30 ⁇ g to 100 mg by injection administration.
- 1 g, preferably 100 ⁇ g to 500 mg, more preferably 100 ⁇ g to 30 mg is administered once or in several divided doses, and can be arbitrarily determined according to the situation.
- the compound of the general formula (I) of the present invention or a pharmaceutically acceptable salt thereof and other therapeutic agents for HCV infection can be formulated by conventional methods.
- the dosage form include oral preparations (tablets, granules, powders, capsules, syrups, etc.), injections (for intravenous administration, intramuscular administration, subcutaneous administration, intraperitoneal administration, etc.), and external preparations.
- oral preparations tablets, granules, powders, capsules, syrups, etc.
- injections for intravenous administration, intramuscular administration, subcutaneous administration, intraperitoneal administration, etc.
- external preparations for intravenous administration, intramuscular administration, subcutaneous administration, intraperitoneal administration, etc.
- Percutaneous absorption preparations ovaltments, patches, etc.
- eye drops for nasal drops, suppositories, etc.
- solid preparations such as tablets, capsules, granules, powders and the like are usually 0.001 to 99.5% by weight, preferably 0.001 to 90% by weight of the compound of the general formula (I) or pharmaceuticals thereof Which can be included in a chemically acceptable form.
- the compound of the general formula (I) or a pharmaceutically acceptable salt thereof if necessary, for example, excipient, binder, disintegrant, lubricant, coloring, Additives, flavoring agents, antioxidants, solubilizing agents, etc., can be made into tablets, granules, powders and capsules by conventional methods. Further, for example, stabilizers, emulsifiers, absorption promoters, surfactants, etc. may be used as necessary, and tablets, granules, powders, capsules, etc. may be coated with a film as necessary. May be.
- excipients include lactose, sucrose, glucose, corn starch, mannitol, sorbitol, starch, pregelatinized starch, dextrin, crystalline cellulose, light anhydrous silicic acid, aluminum silicate, calcium silicate, magnesium aluminate metasilicate, phosphorus Examples thereof include calcium oxyhydrogen.
- binder include polyvinyl pyrrolidone, ethyl cellulose, methyl cellulose, gum arabic, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose sodium, polyvinyl alcohol and the like.
- disintegrants include crystalline cellulose, agar, gelatin, calcium carbonate, sodium bicarbonate, calcium citrate, dextrin, pectin, low-substituted hydroxypropyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose calcium, croscarmellose sodium, carboxymethyl starch. And sodium carboxymethyl starch.
- lubricants include magnesium stearate, calcium stearate, sodium stearyl fumarate, and talc.
- colorants include iron sesquioxide, yellow iron sesquioxide, carmine, caramel, ⁇ -carotene, titanium oxide, and talc.
- the flavoring agent include sodium riboflavin phosphate, yellow aluminum lake and the like, and examples of the flavoring agent include cocoa powder, mint oil, and cinnamon powder.
- antioxidants include ascorbic acid, ⁇ -tocopherol, ethoxyquin, dibutylhydroxytoluene, butylhydroxyanisole and the like, and examples of solubilizers include polyethylene glycol, propylene glycol, benzyl benzoate, ethanol, cholesterol, Examples include ethanolamine, sodium carbonate, sodium citrate, polysorbate 80, and nicotinamide.
- stabilizers include acids, bases or salts thereof, and examples of emulsifiers, absorption accelerators and surfactants include stearyl triethanolamine, sodium lauryl sulfate, laurylaminopropionic acid, lecithin, and glyceryl monostearate.
- Sucrose fatty acid ester glycerin fatty acid ester and the like.
- film coating agent examples include hydroxypropylcellulose, hydroxypropylmethylcellulose, ethylcellulose, methylcellulose and the like.
- any of the above-mentioned additives is not limited to these.
- an injection for example, for intravenous administration, intramuscular administration, subcutaneous administration, intraperitoneal administration, etc.
- a pH adjuster, a buffer, a suspending agent, a solubilizing agent, an antioxidant, a preservative (preservative), a tonicity agent and the like can be added and produced by a conventional method.
- it may be freeze-dried to obtain a freeze-dried preparation that is dissolved at the time of use.
- These injections can be administered intravenously, subcutaneously, intramuscularly and the like.
- pH adjusters and buffers include organic acids or inorganic acids and / or salts thereof, sodium hydroxide, meglumine, etc.
- suspending agents include methyl cellulose, polysorbate 80, hydroxyethyl cellulose, gum arabic, and carboxymethyl cellulose.
- Sodium, polyoxyethylene sorbitan monolaurate, etc., as solubilizing agents for example, polyoxyethylene hydrogenated castor oil, polysorbate 80, nicotinamide, polyoxyethylene sorbitan monolaurate, etc., as antioxidants, for example Ascorbic acid, ⁇ -tocopherol, sulfite and the like, preservatives such as methyl paraoxybenzoate, ethyl paraoxybenzoate, sorbic acid and the like, and isotonic agents such as glucose, sodium chloride, manni Lumpur, there may be mentioned sorbitol, not of course not limited thereto.
- These injection solutions can usually contain a compound of general formula (I) such as 0.000001 to 99.5% by weight, preferably 0.0000001 to 90% by weight, or a pharmaceutically acceptable salt thereof. .
- a base material is added to the compound of the general formula (I) or a pharmaceutically acceptable salt thereof, and if necessary, the aforementioned emulsifiers, preservatives, stabilizers,
- transdermal preparations ovalments, patches, etc.
- eye drops nasal drops
- suppositories etc.
- the base material to be used for example, various raw materials usually used for drugs, quasi drugs, cosmetics and the like can be used.
- animal and vegetable oils mineral oils, ester oils, waxes, higher alcohols, fatty acids, silicone oils, surfactants, phospholipids, alcohols, polyhydric alcohols, water-soluble polymers
- examples include raw materials such as clay minerals and purified water.
- components having differentiation-inducing action, blood flow promoters, bactericides, anti-inflammatory agents, cell activators, vitamins, amino acids, humectants, keratolytic agents, and the like can be blended as necessary.
- These external preparations can contain usually 0.000001 to 99.5% by weight, preferably 0.0000001 to 90% by weight of the compound of the general formula (I) or a pharmaceutically acceptable salt thereof.
- kits containing the compound of general formula (I) of this invention, or its pharmaceutically acceptable salt, and the other therapeutic agent of HCV infection can be set as the kit containing the compound of general formula (I) of this invention, or its pharmaceutically acceptable salt, and the other therapeutic agent of HCV infection.
- Example 1 Preparation of 1 mg formulation 2 g of citric acid was weighed into a 125 mL high-density polyethylene bottle (HDPE bottle, manufactured by HighNalge Nunc International), 18 g of purified water was added and dissolved, and 10% citric acid aqueous solution was added. Each 2% citric acid aqueous solution was prepared by weighing in an HDPE bottle and dissolving 98 g of purified water. On the other hand, 100 mg of the drug substance was weighed into an HDPE bottle.
- HDPE bottle high-density polyethylene bottle
- Example 2 Preparation of 10 mg formulation 1000 mg of the drug substance was weighed into an HDPE bottle. Add 20g of 10% aqueous citric acid solution prepared in Example 1 to HDPE bottle with weighed drug substance, dissolve the drug substance by shaking, and then add 80g of water and contain 10mg / g drug substance 100 g of 2% aqueous citric acid solution was prepared. Next, 1 g of 2% aqueous citric acid solution containing 10 mg / g of the drug substance is precisely weighed into another HDPE bottle, and 99 g of the 2% citric acid solution prepared in Example 1 is added and mixed to obtain 0.1 mg / g. 100 g of a 2% aqueous citric acid solution containing 1 g of the drug substance was prepared, and 100 g of an oral solution containing 10 mg of the drug substance was obtained.
- Example 3 A 100 mg formulation and 400 mg of prepared drug substance were weighed into an HDPE bottle. Add 20g of 10% citric acid aqueous solution prepared in Example 1 to HDPE bottle with weighed drug substance, dissolve the drug substance by shaking, then add 80g of water, and contain 4mg / g drug substance 100 g of 2% aqueous citric acid solution was prepared. Next, 25 g of 2% aqueous citric acid solution containing 4 mg / g of the drug substance is precisely weighed into another HDPE bottle, and 75 g of the 2% citric acid solution prepared in Example 1 is added and mixed. 100 g of a 2% citric acid aqueous solution containing the drug substance was prepared, and 100 g of an oral solution containing 100 mg of the drug substance was obtained.
- Test example 1 Evaluation of Inhibitory Activity and Cytotoxicity of Active Compound for HCV Replication
- the HCV replication inhibitory effect and cytotoxicity of the compound of general formula (I) of the present invention were examined by a replicon assay using HCV subgenomic replicon cells. .
- HCV subgenomic replicon cells include genotype 1b HCV self-replicating subgenomic replicons, luc-ubi-neo / ET replicon cells with luciferase reporter, ubiquitin and neomycin phosphotransferase coding sequences and three cell culture mutations ( Pietschmann, T. et al., J. Virol. 76: 4008-4021, 2002). ET replicon cells were cultured in DMEM containing 10% FBS, 1% penicillin streptomycin, 1% glutamine and 250 ⁇ g / mL G418 in a 37 ° C., 5% CO 2 incubator.
- the compound of the general formula (I) as a test substance was added and cultured, it was cultured under the same conditions as described above in DMEM containing 5% FBS, 1% penicillin streptomycin and 1% glutamine. ET replicon cells were cultured on two 96-well plates at 5000 cells / well. The next day, only the test substance diluted to various concentrations at a maximum concentration of 1.1 ⁇ M is added to one plate, and at the same time, a human recombinant with a constant concentration of 0.1 IU / mL is added to the other plate together with the test substance. Interferon ⁇ -2b (rIFN ⁇ -2b) was added. 72 hours after the addition, luciferase activity indicating amplification of HCV mRNA was measured. Cytotoxicity was measured by CytoTox-1 cell proliferation assay (Promega).
- Results Table 1 shows the luciferase activity as a percentage of the luciferase activity when only the solvent is used for the compound of general formula (I) alone and when the compound of general formula (I) is used in combination with rIFN ⁇ -2b. It was.
- the active ingredient compound concentration that suppresses 50% of HCV repurin (EC 50 ) is determined as the HCV replication inhibitory activity
- the active ingredient compound concentration (IC 50 ) that reduces viable cells by 50% is determined as the cytotoxicity.
- IC 50 / EC 50 values were also obtained as properties, and the results are summarized in Table 2.
- test substance A and test substance B are each used alone, the luciferase activity decreases almost in a dose-dependent manner as the concentration increases.
- Substance A and test substance B each exhibited HCV replication inhibitory activity almost in a dose-dependent manner.
- Test Substance A and Test Substance B each exhibited a stronger HCV replication inhibitory activity almost in a dose-dependent manner.
- Table 2 when each of the test substance A and the test substance B was used alone, it exhibited a strong HCV replication inhibitory activity at a concentration lower than the concentration that exhibited cytotoxicity.
- Test Substance A and Test Substance B exhibited stronger HCV replication inhibitory activity at concentrations lower than those that exhibited cytotoxicity. Therefore, the compound of general formula (I) or a pharmaceutically acceptable salt thereof showed HCV replication inhibitory effect and reduced cytotoxicity.
- Test example 2 Evaluation of Inhibitory Activity and Cytotoxicity of Active Compound for HCV Replication
- LucNeo # 2 replicon cells which are HCV subgenomic replicon cells different from Example 1, the general formula (I) of the present invention
- the compounds were examined for HCV replication inhibitory effect and cytotoxicity.
- the LucNeo # 2 replicon cell is a reporter cell produced with the same concept as the luc-ubi-neo / ET replicon cell used in Test Example 1, and is used for analysis of HCV RNA replication mechanism and anti-HCV drug evaluation.
- the gene sequence is different from the luc-ubi-neo / ET replicon cells (Biochcem. Biophys. Res. Commun. 343 (2006) 879-884).
- Methods LucNeo # 2 replicon cells cultured to confluence were collected by trypsinization and plated on collagen-coated plates at a density of 20000 cells / mL. The culture was performed in 10% FCS / DMEM (containing penicillin-streptomycin, G418 and a non-essential amino acid mixture) in a 37 ° C., 5% CO 2 incubator. After 24 hours, after washing the cells, the compound of the general formula (I) as the test substance was added so that the final concentrations were 3.3 ⁇ M and 10 ⁇ M.
- FCS / DMEM containing penicillin-streptomycin, G418 and a non-essential amino acid mixture
- test substance 72 hours after the addition of the test substance, one cell was washed with cells and lysed with M-PER, and the intracellular luciferase activity was measured using a Promega kit. Moreover, the alamar blue solution was added with respect to the cell cultured on the same conditions, and cytotoxicity was examined.
- Results Table 3 shows the intracellular luciferase activity 72 hours after addition of the test substance and the AlamerBlue signal used for cytotoxicity as a percentage of the solvent-treated group.
- the test substance A, the test substance B, and the test substance C had a luciferase activity that decreased in a dose-dependent manner at a concentration lower than the concentration that exhibited cytotoxicity. It exhibited strong HCV replication inhibitory activity. Therefore, the compound of general formula (I) or a pharmaceutically acceptable salt thereof showed HCV replication inhibitory effect and reduced cytotoxicity.
- Test example 3 Inhibitory activity of active compound against HCV replication
- the LucNeo # 2 replicon cells which are HCV subgenomic replicon cells used in Test Example 2, were examined for HCV replication inhibitory activity in consideration of the number of cells.
- Methods LucNeo # 2 replicon cells cultured to confluence were collected by trypsin treatment and plated on collagen-coated plates at a density of 1000 cells / well. Culturing was performed in 10% FBS / DMEM (containing penicillin-streptomycin and a non-essential amino acid mixture) at 37 ° C. in a 5% CO 2 incubator. On the next day or in the evening when cell adhesion was confirmed, the compound of the general formula (I) as the test substance was added to 1.0 to 1.3 ⁇ M.
- AlamarBlue was diluted 5-fold with PBS ( ⁇ ) and 1/10 amount was added to measure the number of cells. After the measurement, the intracellular luciferase activity was measured for luminescence by adding 5/11 amount of the substrate solution using the Promega kit.
- the compound of the general formula (I) showed a strong HCV replication inhibitory activity with a reduced luciferase activity per cell.
- Test example 4 Decreasing effect of active compound on blood HCV level
- the inhibitory effect on the HCV replication of the compound of the general formula (I) of the present invention was examined by measuring the lowering effect on the serum HCV RNA level.
- Methods PXB mice which are human hepatocyte transplant model mice, were prepared using uPA + / + / SCID mice as host mice. uPA + / + / SCID mice have the combined traits of liver damage and severe combined immunodeficiency. Commercially frozen human hepatocytes (BD Biosciences, MA, USA) were injected and transplanted into the spleens of male or female uPA + / + / SCID mice aged 2-4 weeks of age.
- Human hepatocyte-transplanted mice (PXB mice) in which at least% was replaced by human hepatocytes were prepared. Ten to 14 weeks after the transplantation, it was confirmed that the human albumin concentration in blood was 7.0 mg / mL or more, and the transplantation was established. genotype 1b HCV-infected serum (phoenixbio) was injected from the orbital sac so that the virus titer measured by RT-PCR (Life Technologies Corporation, Carlsbad, USA) was 1 ⁇ 10 4 copies / mouse, and HCV infection was performed. It was. In this test, an individual whose serum HCV RNA amount at 7 days from the start of drug administration reached 1 ⁇ 10 6 copies / mL was regarded as established HCV infection.
- Test substance A (the compound of Example 425 of WO2005 / 115990) suspended in a 0.5% methylcellulose solution was used for oral gavage at doses of 30 and 100 mg / kg / 10 mL. The number of animals per group was 5. Negative subjects were only solvents. Administration was continued once a day for 14 days. The initial administration was set to 0 day, blood was collected at 0, 1, 3, 7, 10, 14, 17, and 21 days, and the amount of serum HCV RNA was measured.
- the test substance A showed a decrease in serum HCV RNA level in a dose-dependent manner. Therefore, the compound of general formula (I) or a pharmaceutically acceptable salt thereof showed an HCV replication inhibitory effect.
- the title compound can be obtained by carrying out a reaction according to the synthesis method of Example 147 of WO2005115990.
- the compound of the general formula (I) or a pharmaceutically acceptable salt thereof suppresses the replication of HCV, and further, prevents other HCV infections such as interferon.
- HCV replication can be particularly strongly suppressed. Therefore, the compound of general formula (I) or a pharmaceutically acceptable salt thereof is extremely effective for the prevention and treatment of HCV infection.
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Abstract
Description
現在までのHCV感染症の最も有効な治療法は、ペグインターフェロンとリバビリン(1-β-D-リボフラノシル-1H-1,2,4-トリアゾール-3-カルボキサミド)との併用が知られている(非特許文献1および非特許文献2)。また、最近では、スフィンゴ脂質生合成またはコレステロール生合成がHCV感染に関与するとの知見から、スフィンゴ脂質生合成またはコレステロール生合成に関わる酵素の活性や発現を阻害する物質を、HCV感染症の予防または治療に用いることが提案されている(特許文献1および特許文献2)。
[1].一般式(I)
R2は水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R3は、水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R4は、水素原子、ハロゲン原子、C1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルコキシ基、C1-6アルキルスルホニル基、C1-6アルコキシC1-4アルキル基、ヒドロキシC1-6アルキル基、ハロC1-6アルキル基、アミノ基、ホルミル基、C2-4アルカノイル基、ニトロ基またはシアノ基を示し、
R5は、
式:
R6は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R7は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示すか、あるいはR6およびR7は、結合する窒素原子と一緒になって、下記の表
[3].HCV感染症の他の治療剤と、同時にもしくは順次に投与するための、上記[1]または[2]に記載の一般式(I)
[4].一般式(I)で表される化合物またはその薬学的に許容し得る塩とともにHCV感染症の他の治療剤とを含有するHCV感染症治療剤;
[5].一般式(I)で表される化合物またはその薬学的に許容し得る塩が、
(E)-1-[(1S)-1-(4-フルオロフェニル)エチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン、
(E)-1-[(1R)-1-(4-フルオロフェニル)-2-ヒドロキシエチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン、
(E)-(4R,9aS)-7-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-4-(3,4,5-トリフルオロフェニル)ヘキサヒドロピリド[2,1-c][1,4]オキサジン―6-オン、
3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-1-[(1S)-1-フェニルエチル]ピペリジン-2-オン、
(E)-N-シクロヘキシルメチル-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]-N-(1-フェニルシクロプロピル)アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-トリフルオロフェニル]-N-インダン-1-イル-アクリルアミド、
(E)-3-[3-アセチル-4-(1H-イミダゾール-1-イル)-フェニル]-N-インダン-1-イル-アクリルアミド、
(E)-3-[3-フルオロ-4-(1H-イミダゾール-1-イル)-フェニル]-2-ブテノン酸インダン-1-イル-アミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]-N-(1,2,3,4-テトラヒドロナフタレン-1-イル)アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシメチルフェニル]-N-インダン-1-イル-アクリルアミドおよびそれらの薬学的に許容し得る塩からなる群から選ばれる化合物である上記[1]ないし[5]のいずれかに記載のHCV感染症治療剤;
[6].HCV感染症の他の治療剤がインターフェロンである、上記[2]ないし[5]のいずれかに記載のHCV感染症治療剤;
[7].インターフェロンがインターフェロンα-2bである上記[6]に記載のHCV感染症治療剤;
[8].HCV感染症の他の治療剤がリバビリンである、上記[2]ないし[5]のいずれかに記載のHCV感染症治療剤;
[9].HCV感染症の他の治療剤がインターフェロンおよびリバビリンである、上記[2]または[8]に記載のHCV感染症治療剤;
[10].HCV感染症の他の治療剤がHCVプロテアーゼ阻害剤またはHCVポリメラーゼ阻害剤である上記[2]ないし[5]にいずれかに記載のHCV感染症治療剤;
[11].上記[1]に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩と、HCV感染症の他の治療剤とを含有する、HCV感染症治療用キット;
[12].上記[1]に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を含有するHCV感染症治療剤を製造するための、該化合物またはその薬学的に許容し得る塩の使用;
[13].HCV感染症治療剤が、該化合物またはその薬学的に許容し得る塩とともにHCV感染症の他の治療剤を含有する、上記[12]に記載の使用;
[14].上記[1]に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を含有するHCV感染症治療剤であってHCV感染症の他の治療剤と併用するためのHCV感染症治療剤を製造するための、該化合物またはその薬学的に許容し得る塩の使用;
[15].HCV感染症治療剤が、HCV感染症の他の治療剤と同時にまたは順次に投与するためのHCV感染症治療剤である上記[14]に記載の使用;
[16].HCV感染症の治療方法であって、上記[1]に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を必要とする対象に投与することを含有する治療方法;
[17].該化合物またはその薬学的に許容し得る塩を、HCV感染症の他の治療剤と併用する、上記[16]に記載の治療方法;および
[18].該化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤とを、同時にまたは順次に投与する、上記[17]に記載の治療方法
に関する。
R2は水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R3は、水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R4は、水素原子、ハロゲン原子、C1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルコキシ基、C1-6アルキルスルホニル基、C1-6アルコキシC1-4アルキル基、ヒドロキシC1-6アルキル基、ハロC1-6アルキル基、アミノ基、ホルミル基、C2-4アルカノイル基、ニトロ基またはシアノ基を示し、
R5は、
式:
R6は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R7は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示すか、あるいはR6およびR7は、結合する窒素原子と一緒になって、下記の表
「ハロゲン原子」とは、フッ素原子、塩素原子、臭素原子、ヨウ素原子を意味する。「ハロゲン原子」の好適例としては、例えばフッ素原子、塩素原子等を挙げることができ、より好適には、例えばフッ素原子等を挙げることができる。
「C1-6アルキル基」とは、炭素数1~6個の直鎖状または分枝鎖状のアルキル基を意味し、具体例としては、例えばメチル基、エチル基、1-プロピル基(n-プロピル基)、2-プロピル基(i-プロピル基)、2-メチル-1-プロピル基(i-ブチル基)、2-メチル-2-プロピル基(t-ブチル基)、1-ブチル基(n-ブチル基)、2-ブチル基(s-ブチル基)、1-ペンチル基、2-ペンチル基、3-ペンチル基、2-メチル-1-ブチル基、3-メチル-1-ブチル基、2-メチル-2-ブチル基、3-メチル-2-ブチル基、2,2-ジメチル-1-プロピル基、1-へキシル基、2-へキシル基、3-へキシル基、2-メチル-1-ペンチル基、3-メチル-1-ペンチル基、4-メチル-1-ペンチル基、2-メチル-2-ペンチル基、3-メチル-2-ペンチル基、4-メチル-2-ペンチル基、2-メチル-3-ペンチル基、3-メチル-3-ペンチル基、2,3-ジメチル-1-ブチル基、3,3-ジメチル-1-ブチル基、2,2-ジメチル-1-ブチル基、2-エチル-1-ブチル基、3,3-ジメチル-2-ブチル基、2,3-ジメチル-2-ブチル基等が挙られる。
「C3-6シクロアルキル基」とは、炭素数が3ないし6個の単環の飽和脂肪族炭化水素基を意味し、具体例としては、例えばシクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基が挙げられる
「C3-6シクロアルコキシ基」とは、前記定義の「C3-6シクロアルキル基」が結合したオキシ基であることを意味し、具体例としては、例えばシクロプロピルオキシ基、シクロブチルオキシ基、シクロペンチオキシ基、シクロヘキシルオキシ基が挙げられる。
「C1-6アルコキシC1-4アルキル基」とは、前記定義の「C1-6アルコキシ基」が結合した炭素数1~4個の直鎖状または分枝鎖状のアルキル基を意味し、具体例としては、例えばメトキシメチル基、エトキシメチル基、1-プロピルオキシメチル基、2-プロピルオキシメチル基、2-メチル-1-プロピルオキシメチル基、2-メチル-2-プロピルオキシメチル基、1-ブチルオキシメチル基、メトキシエチル基、エトキシエチル基、1-プロピルオキシエチル基、2-プロピルオキシエチル基、2-メチル-1-プロピルオキシエチル基、2-メチル-2-プロピルオキシエチル基、1-ブチルオキシエチル基等が挙げられる。
「ヒドロキシC1-6アルキル基」とは、ヒドロキシ基が前記定義の「C1-6アルキル基」に置換した基であることを意味し、具体例としては、例えばヒドロキシメチル基、1-ヒドロキシエチル基、2-ヒドロキシエチル基、1-ヒドロキシプロピル基、2-ヒドロキシプロピル基、3-ヒドロキシプロピル基等が挙げられる。
「C2-4アルカノイル基」とは、前記定義の「C1-6アルキル基」が結合したカルボニル基であることを意味し、具体例としては、例えばアセチル基、プロピオニル基、イソプロピオニル基、ブチリル基、イソブチリル基、バレリル基、イソバレリル基、ピバロイル基等が挙げられる。
「C3-6シクロアルキレン基」とは、前記定義の「C3-8シクロアルキル基」からさらに任意の水素原子を1個除いて誘導される二価の基を意味し、具体例としては、例えばシクロプロピレン基、シクロブチレン基、シクロペンチレン基、シクロヘキシレン基、シクロヘプチレン基、シクロオクチレン基等が挙げられる。
「C7-15アラルキル基」とは、前記定義の「C6-14アリール基」が前記定義の「C1-6アルキル基」に結合して形成される、炭素数が6ないし15個の芳香族の炭化水素環式基を意味し、具体例としては、例えばベンジル基、フェネチル基、フェニルプロピル基、1-ナフチルメチル基、2-ナフチルメチル基等が挙げられる。
「C3-6シクロアルキルC1-4アルキル基」とは、前記定義の「C3-6シクロアルキル基」が前記定義の「C1-6アルキル基」に結合して形成される基であることを意味し、具体例としては、例えばシクロプロピルメチル基、1-シクロプロピルエチル基、2-シクロプロピルエチル基、1-シクロプロピルプロピル基、2-シクロプロピルプロピル基、3-シクロプロピルプロピル基等が挙げられる。
「N-C7-15アラルキルアミノ基」とは、前記定義の「C7-15アラルキル基」がアミノ基に結合して形成される基であることを意味し、具体例としては、例えばN-ベンジルアミノ基、N-フェネチルアミノ基、N-フェニルプロピルアミノ基、N-(1-ナフチルメチル)アミノ基、N-(2-ナフチルメチル)アミノ基等が挙げられる。
一般式(I)において、R1、R2、R3、R4およびR5は、以下の意味を有する。
R1は、水素原子、ハロゲン原子またはC1-6アルキル基を示し、中でも、水素原子またはC1-6アルキル基が好ましく、特に水素原子が好ましい。
R2は水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、中でも、水素原子またはC1-6アルキル基が好ましく、特に水素原子が好ましい。
R3は、水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、中でも、水素原子またはC1-6アルキル基が好ましく、特に水素原子が好ましい。
R4は、水素原子、ハロゲン原子、C1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルコキシ基、C1-6アルキルスルホニル基、C1-6アルコキシC1-4アルキル基、ヒドロキシC1-6アルキル基、ハロC1-6アルキル基、アミノ基、ホルミル基、C2-4アルカノイル基、ニトロ基またはシアノ基を示し、中でも、ハロゲン原子、C1-6アルコキシ基、C1-6アルコキシC1-4アルキル基、ハロC1-6アルキル基、ヒドロキシC1-6アルキル基またはC2-4アルカノイル基が好ましい。
R5は、式:
R6は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R7は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示すか、あるいはR6およびR7は、結合する窒素原子と一緒になって、下記の表
R60は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R70は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示す)または下記の表
一般式(I-A)
R60は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R70は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示す)または下記の表
(E)-1-[(1S)-1-(4-フルオロフェニル)エチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン(WO2005/115990の実施例425)、
)、
(E)-1-[(1R)-1-(4-フルオロフェニル)-2-ヒドロキシエチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン(WO2005/115990の実施例629)
(E)-(4R,9aS)-7-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-4-(3,4,5-トリフルオロフェニル)ヘキサヒドロピリド[2,1-c][1,4]オキサジン―6-オン(WO2007/060821の実施例83)、
3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-1-[(1S)-1-フェニルエチル]ピペリジン-2-オン(WO2005/115990の実施例196)、
(E)-N-シクロヘキシルメチル-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]アクリルアミド(WO2005/115990の実施例236)、
(E)-N-[1-シクロプロピル-1-フェニル]-3-[3-メトキシ-4-(1H-イミダゾール-1-イル)フェニル]アクリルアミド(WO2005/115990の実施例256)、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-トリフルオロフェニル]-N-インダン-1-イル-アクリルアミド(WO2005/115990の実施例13)、
(E)-3-[3-アセチル-4-(1H-イミダゾール-1-イル)-フェニル]-N-インダン-1-イル-アクリルアミド(WO2005/115990の実施例441)、
(E)-3-[3-フルオロ-4-(1H-イミダゾール-1-イル)-フェニル]-2-ブテノン酸インダン-1-イル-アミド(WO2005/115990の実施例93)、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]-N-(1,2,3,4-テトラヒドロナフタレン-1-イル)アクリルアミド(WO2005/115990の実施例231)および
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシメチルフェニル]-N-インダン-1-イル-アクリルアミド(WO2005/115990の実施例442)。
本発明において使用する前記の各種インターフェロンは、遺伝子工学的手法により生産することができ、また、例えば市販のものを購入して用いることもできる。
更には、一般式(I)の化合物またはその薬学的に許容し得る塩と併用することができるHCV感染症の他の治療剤としては、例えばHCVゲノムの複製に必要なNS3、NS5A、NS4B、NS5B等のNS蛋白質に対して作用する酵素の活性を阻害するプロテアーゼ阻害剤;例えばHCVの転写に必要なRNAポリメラーゼを阻害するポリメラーゼ阻害剤等が挙げられる。より具体的には、プロテアーゼ阻害剤としては、テラプレビル[Telaprevir(CAS registry No. 402957-28-2)]、ボセプレビル[Boceprevir (CAS registry No. 394730-60-0)]、ダノプレビル[(CAS registry No. 916826-48-7)]、TMC435350(CAS registry No. 923604-59-5)等のプロテアーゼ阻害剤、ポリメラーゼ阻害剤としては、R1626およびR7128(WO2007065829参照)、フィリブビル[Filibuvir(CAS registry No. 877130-29-5)]、MK0608(CAS registry No. 443642-29-3)等のポリメラーゼ阻害剤が好ましいものとして挙げられる(NATURE REVIEWS DRUG DISCOVERY VOL.7, OCT, 2008, P799-800参照)。
一般式(I)の化合物またはその薬学的に許容し得る塩と併用するHCV感染症の他の治療剤は、上記した薬剤を2種以上用いてもよい。例えば、前記インターフェロンとリバビリンとを用いるのが好ましく、特に、前記インターフェロンα-2bとリバビリンとを用いるのが好ましい。
一般式(I)の化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤と併用する場合には、本発明の一般式(I)の化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤とを同時に投与してもよく、一般式(I)の化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤とを、投与間隔を置いてそれぞれを順次投与してもよい。投与方法、投与間隔、投与順序等は、投与する対象者の症状の程度、年齢、性別、体重、投与形態等に応じて任意に決めることができる。また、本発明の一般式(I)の化合物またはその薬学的に許容し得る塩の投与量とHCV感染症の他の治療剤の投与量は、一般式(I)の化合物またはその薬学的に許容し得る塩を単独で使用する場合と同様に、通常、成人の場合は1日あたり経口投与で約30μg~10g、好ましくは100μg~5g、さらに好ましくは100μg~100mgを、注射投与で30μg~1g、好ましくは100μg~500mg、さらに好ましくは100μg~30mgをそれぞれ1回又は数回に分けて投与し、状況に応じて任意に決めることができる。一般式(I)の化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤とを併用する場合、特に、例えば単独で使用する場合の効果の組合せによる相加効果以上の効果、副作用軽減等の有利な効果のための投与量の減少等を期待することができる。
これらの錠剤、カプセル剤、顆粒剤、粉末等の固形製剤は、通常、0.001~99.5重量%、好ましくは0.001~90重量%等の一般式(I)の化合物またはその薬学的に許容し得る塩を含むことができる。
賦形剤としては、例えば乳糖、白糖、ブドウ糖、コーンスターチ、マンニトール、ソルビトール、デンプン、α化デンプン、デキストリン、結晶セルロース、軽質無水ケイ酸、ケイ酸アルミニウム、ケイ酸カルシウム、メタケイ酸アルミン酸マグネシウム、リン酸水素カルシウム等を挙げることができる。
結合剤としては、例えばポリビニルピロリドン、エチルセルロース、メチルセルロース、アラビアゴム、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、カルボキシメチルセルロースナトリウム、ポリビニルアルコール等を挙げることができる。
崩壊剤としては、例えば結晶セルロース、寒天、ゼラチン、炭酸カルシウム、炭酸水素ナトリウム、クエン酸カルシウム、デキストリン、ペクチン、低置換度ヒドロキシプロピルセルロース、カルボキシメチルセルロース、カルボキシメチルセルロースカルシウム、クロスカルメロースナトリウム、カルボキシメチルスターチ、カルボキシメチルスターチナトリウム等を挙げることができる。
滑沢剤としては、例えばステアリン酸マグネシウム、ステアリン酸カルシウム、フマル酸ステアリルナトリウム、タルク等を、着色剤としては、例えば三二酸化鉄、黄色三二酸化鉄、カルミン、カラメル、β-カロチン、酸化チタン、タルク、リン酸リボフラビンナトリウム、黄色アルミニウムレーキ等を、矯味矯臭剤としては、例えばココア末、ハッカ油、桂皮末等を挙げることができる。
安定化剤としては、例えば酸、塩基またはそれらの塩等が、乳化剤、吸収促進剤および界面活性剤としては、例えばステアリルトリエタノールアミン、ラウリル硫酸ナトリウム、ラウリルアミノプロピオン酸、レシチン、モノステアリン酸グリセリン、ショ糖脂肪酸エステル、グリセリン脂肪酸エステル等を挙げることができる。
皮膜コーティング剤としては、例えばヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、エチルセルロース、メチルセルロース等を挙げることができる。上述したいずれの添加剤についても、もちろんこれらに限定される訳ではない。
pH調整剤および緩衝剤としては、例えば有機酸または無機酸および/またはその塩、水酸化ナトリウム、メグルミン等を、懸濁化剤としては、例えばメチルセルロース、ポリソルベート80、ヒドロキシエチルセルロース、アラビアゴム、カルボキシメチルセルロースナトリウム、ポリオキシエチレンソルビタンモノラウレート等を、溶解補助剤としては、例えばポリオキシエチレン硬化ヒマシ油、ポリソルベート80、ニコチン酸アミド、ポリオキシエチレンソルビタンモノラウレート等を、抗酸化剤としては、例えばアスコルビン酸、α-トコフェロール、亜硫酸塩等を、保存剤としては、例えばパラオキシ安息香酸メチル、パラオキシ安息香酸エチル、ソルビン酸等を、等張化剤としては、例えばブドウ糖、塩化ナトリウム、マンニトール、ソルビトール等を挙げることができるが、もちろんこれらに限定される訳ではない。
これらの注射液は、通常、0.000001~99.5重量%、好ましくは0.0000001~90重量%等の一般式(I)の化合物またはその薬学的に許容し得る塩を含むことができる。
使用する基剤原料としては、例えば医薬品、医薬部外品、化粧品等に通常使用される各種原料を用いることが可能である。具体的には、例えば動植物油、鉱物油、エステル油、ワックス類、高級アルコール類、脂肪酸類、シリコン油、界面活性剤、リン脂質類、アルコール類、多価アルコール類、水溶性高分子類、粘土鉱物類、精製水等の原料を挙げることができる。
さらに、必要に応じて分化誘導作用を有する成分、血流促進剤、殺菌剤、消炎剤、細胞賦活剤、ビタミン類、アミノ酸、保湿剤、角質溶解剤等の成分を配合することもできる。
これらの外用剤は、通常0.000001~99.5重量%、好ましくは0.0000001~90重量%等の一般式(I)の化合物またはその薬学的に許容し得る塩を含むことができる。
実施例1
1mg製剤の調製
クエン酸2gを125mLの高密度ポリエチレンボトル(HDPEボトル、HighNalge Nunc International製)に秤取し精製水18gを添加して溶解させて10%クエン酸水溶液を、クエン酸2gを別のHDPEボトルに秤取し精製水98gを添加して溶解させて2%クエン酸水溶液を、各々調製した。一方、原薬100mgをHDPEボトルに秤取した。原薬を秤取したHDPEボトルに、先に調製した10%クエン酸水溶液20gを加え、振とうして原薬を溶解させた後、さらに水80gを加え、1mg/gの原薬を含有する2%クエン酸水溶液を調製した。次に1mg/g の原薬を含有する2%クエン酸水溶液1gを、別のHDPEボトルに精秤し、2%クエン酸溶液9gを加え混合し、0.1mg/gの原薬を含有する2%クエン酸水溶液10gを調製し、原薬を1mg含有する経口液剤10gを得た。
10mg製剤の調製
原薬1000mgをHDPEボトルに秤取した。原薬を秤取したHDPEボトルに、実施例1で調製した10%クエン酸水溶液20gを加え、振とうして原薬を溶解させた後、さらに水80g加え、10mg/gの原薬を含有する2%クエン酸水溶液100gを調製した。次に10mg/gの原薬を含有する2%クエン酸水溶液1gを、別のHDPEボトルに精秤し、実施例1で調製した2%クエン酸溶液99gを加え混合して、0.1mg/gの原薬を含有する2%クエン酸水溶液100gを調製し、原薬を10mg含有する経口液剤100gを得た。
100mg製剤と調製
原薬400mgをHDPEボトルに秤取した。原薬を秤取したHDPEボトルに、実施例1で調製した10%クエン酸水溶液20gを加え、振とうして原薬を溶解させた後、さらに水80g加え、4mg/gの原薬を含有する2%クエン酸水溶液100gを調製した。次に4mg/gの原薬を含有する2%クエン酸水溶液25gを、別のHDPEボトルに精秤し、実施例1で調製した2%クエン酸溶液75gを加え混合して、1mg/gの原薬を含有する2%クエン酸水溶液100gを調製し、原薬を100mg含有する経口液剤100gを得た。
HCVの複製に対する有効成分化合物の抑制活性および細胞毒性の評価
HCVサブゲノムレプリコン細胞を用いたレプリコンアッセイ法によって、本発明の一般式(I)の化合物について、HCV複製抑制効果および細胞毒性について調べた。
HCVサブゲノムレプリコン細胞として、ジェノタイプ1bのHCV自己複製サブゲノムレプリコンと、ルシフェラーゼレポーター、ユビキチンおよびネオマイシンホスフォトランスフェラーゼコード配列および3つの細胞培養用変異を有するluc-ubi-neo/ETレプリコン細胞(Pietschmann, T. et al., J. Virol. 76:4008-4021, 2002)を用いた。ETレプリコン細胞は、10%FBS、1%ペニシリンストレプトマイシン、1%グルタミンおよび250μg/mLG418を含有するDMEMで、37℃、5%CO2インキュベーターにおいて培養した。被検物質である一般式(I)の化合物を添加して培養するときは、5%FBS、1%ペニシリンストレプトマイシンおよび1%グルタミンを含有するDMEMで、前記と同条件で培養した。
ETレプリコン細胞は、5000cell/wellで96wellの二つのプレートで培養した。翌日、一つのプレートには最高濃度1.1μMで各種濃度に希釈した被検物質のみを添加し、同時に、他のプレートには、被検物質とともに、0.1IU/mLの一定濃度のヒトリコンビナントインターフェロンα-2b(rIFNα-2b)を添加した。添加から72時間後にHCVのmRNAの増幅を示すルシフェラーゼ活性を測定した。また細胞毒性を、CytoTox-1細胞増殖アッセイ(Promega社)により測定した。
一般式(I)の化合物単独の場合および一般式(I)の化合物とrIFNα-2bとを併用した場合について、ルシフェラーゼ活性を、溶媒のみを用いた場合のルシフェラーゼ活性に対するパーセンテージとして表1に示した。また、HCV複製抑制活性として、HCVレプリンの50%を抑制する有効成分化合物濃度(EC50)、細胞毒性として、生存細胞を50%減少させる有効成分化合物濃度(IC50)を求め、同時に、選択性として、IC50/EC50値も求め、それらの結果を表2に纏めて示した。
表2の結果から明らかなように、被検物質Aおよび被検物質Bは、それぞれ単独で用いた場合に、細胞毒性を発揮する濃度より低い濃度で、強力なHCV複製抑制活性を発揮した。また、被検物質Aおよび被検物質Bは、rIFNα-2bと併用した場合には、細胞毒性を発揮する濃度より低い濃度で、それぞれ更に強力なHCV複製抑制活性を発揮した。
したがって、一般式(I)の化合物またはその薬学的に許容し得る塩は、HCV複製抑制効果および低減された細胞毒性を示した。
HCVの複製に対する有効成分化合物の抑制活性および細胞毒性の評価
実施例1とは異なるHCVサブゲノムレプコン細胞であるLucNeo#2レプリコン細胞を用いたレプリコンアッセイ法によって、本発明の一般式(I)の化合物について、HCV複製抑制効果および細胞毒性について調べた。LucNeo#2レプリコン細胞は、試験例1で利用したluc-ubi-neo/ETレプリコン細胞と同じ概念で作製されているレポーター細胞であり、HCVのRNA複製機構の解析や抗HCV薬物評価に利用されている細胞であるが、その遺伝子配列はluc-ubi-neo/ETレプリコン細胞とは異なるものである(Biochcem. Biophys. Res. Commun. 343 (2006) 879-884)。
コンフルエントに培養したLucNeo#2レプリコン細胞をトリプシン処理により回収し、20000cells/mLの密度でコラーゲン被覆プレートに蒔いた。培養は、10%FCS/DMEM(ペニシリン-ストレプトマイシン、G418および非必須アミノ酸混合液含有)で、で、37℃、5%CO2インキュベーターにおいて行った。24時間後に、細胞洗浄後、被検物質である一般式(I)の化合物を終濃度が3.3μMおよび10μMとなるように添加した。被検物質添加72時間後に、1枚は細胞洗浄後にM-PERにて細胞を溶解し、細胞内ルシフェラーゼ活性を、Promegaキットを用いて測定した。また同様の条件で培養した細胞に対しアラマーブルー溶液を添加し、細胞毒性を検討した。
被検物質添加72時間後の細胞内ルシフェラーゼ活性および細胞毒性使用となるAlamerBlueシグナルを、それぞれ溶媒処理群に対するパーセンテージとして表3に示した。
HCVの複製に対する有効成分化合物の抑制活性
試験例2で用いたHCVサブゲノムレプリコン細胞であるLucNeo#2レプリコン細胞を用いて、細胞数を考慮したHCV複製抑制活性を調べた。
コンフルエントに培養したLucNeo#2レプリコン細胞をトリプシン処理により回収し、1000cells/wellの密度でコラーゲン被覆プレートに蒔いた。培養は、10%FBS/DMEM(ペニシリン-ストレプトマイシンおよび非必須アミノ酸混合液含有)で、37℃、5%CO2インキュベーターにおいて行った。翌日あるいは細胞付着を確認できた夕方に被検物質である一般式(I)の化合物を1.0-1.3μMとなるように添加した。被検物質添加4日後に、細胞数の測定のためにAlamarBlueをPBS(-)で5倍希釈し1/10量を添加して蛍光測定した。測定後、細胞内のルシフェラーゼ活性はPromegaキットを用いて基質溶液5/11量を添加して発光測定した。
AlamarBlue活性およびルシフェラーゼ活性は、それぞれ細胞の入っていないウエルの測定値を差し引いた。その後、ルシフェラーゼ活性値x1000をAlamaBlue活性値で除し、被検物質を含まない測定値をトータル活性とし、被検物質による抑制率を算出し表4に示した。
血中HCVレベルに対する有効成分化合物の低下作用
1.方法
ヒト肝細胞移植モデルマウスであるPXBマウスは、uPA+/+/SCIDマウスをホストマウスとして作成された。uPA+/+/SCIDマウスは、肝障害と重症複合免疫不全の形質を併せ持っている。生後2~4週齢に達した雄性または雌性のuPA+/+/SCIDマウスの脾臓に市販凍結ヒト肝細胞(BD Biosciences社製、MA、USA)を注入移植し、マウス肝臓内実質細胞の70%以上がヒト肝細胞によって置換されたヒト肝細胞移植マウス(PXBマウス)を作成した。移植から10~14週後に、血中ヒト型アルブミン濃度が7.0mg/mL以上であることを確認し、移植の成立とした。
genotype 1b HCV感染血清(phoenixbio社)を、RT-PCR法(Life Technologies Corporation、Carlsbad、USA)で測定したウイルスタイターが1x104コピー/匹となるように眼窩嚢より注入し、HCVの感染を行った。本試験においては、薬物投与開始時点からさかのぼって7dayにおける血清HCVRNA量が1x106コピー/mLとなった個体をHCV感染の成立とした。
0.5%メチルセルロース溶液に懸濁した被検物質A(WO2005/115990の実施例425の化合物)は、30および100mg/kg/10mLの用量で強制経口投与に用いた。一群あたりの匹数は5匹とした。陰性対象は溶媒のみとした。投与は1日1回、14日間継続した。初回投与を0dayとし、0、1、3、7、10、14、17、21 dayに採血し、血清HCVRNA量を測定した。
薬物投与前(0 day)と薬物の最終投与(13day)から24時間後に採血した14dayサンプル中の血清HCVRNA量の変化率を個体ごとに算出した。各群の平均値とs.e.を以下の表5に示した。
(E)-3-[4-(2,4-ジメチル-1H-イミダゾール-1-イル)-3-メトキシフェニル]-1-{3H-スピロ[2-ベンゾフラン-1,4’-ピペリジン]-1’-イル}プロプ-2-エン-1-ノンの合成
ESI-MS;m/z444[M++H].
(E)-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)フェニル]-1-[(R)-2-フェニルアジリジン-1-イル]プロプ-2-エン-1-ノンの合成
Claims (18)
- 一般式(I)
R1は、水素原子、ハロゲン原子またはC1-6アルキル基を示し、
R2は水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R3は、水素原子、C1-6アルキル基またはC1-6アルコキシC1-4アルキル基を示し、
R4は、水素原子、ハロゲン原子、C1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルコキシ基、C1-6アルキルスルホニル基、C1-6アルコキシC1-4アルキル基、ヒドロキシC1-6アルキル基、ハロC1-6アルキル基、アミノ基、ホルミル基、C2-4アルカノイル基、ニトロ基またはシアノ基を示し、
R5は、
式:
R6は、ハロゲン原子、C1-6アルキル基、ハロC1-6アルキル基、C1-6アルコキシ基、C3-6シクロアルキレン基、ピラゾリル基およびC6-14アリール基からなる群より選択される置換基を有していてもよい、
インダニル基、クロマニル基、ピコリル基、C7-15アラルキル基、C3-6シクロアルキルC1-4アルキル基またはN-C7-15アラルキルアミノ基を示し、
R7は、水素原子、C1-6アルキル基またはヒドロキシC1-6アルキル基を示すか、あるいはR6およびR7は、結合する窒素原子と一緒になって、下記の表
または下記の表
で表される化合物またはその薬学的に許容し得る塩を含有するHCV感染症治療剤。 - 一般式(I)で表される化合物またはその薬学的に許容し得る塩とともにHCV感染症の他の治療剤とを含有するHCV感染症治療剤。
- 一般式(I)で表される化合物またはその薬学的に許容し得る塩が、
(E)-1-[(1S)-1-(4-フルオロフェニル)エチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン、
(E)-1-[(1R)-1-(4-フルオロフェニル)-2-ヒドロキシエチル]-3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]ピペリジン-2-オン、
(E)-(4R,9aS)-7-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-4-(3,4,5-トリフルオロフェニル)ヘキサヒドロピリド[2,1-c][1,4]オキサジン―6-オン、
3-[3-メトキシ-4-(4-メチル-1H-イミダゾール-1-イル)ベンジリデン]-1-[(1S)-1-フェニルエチル]ピペリジン-2-オン、
(E)-N-シクロヘキシルメチル-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]-N-(1-フェニルシクロプロピル)アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-トリフルオロフェニル]-N-インダン-1-イル-アクリルアミド、
(E)-3-[3-アセチル-4-(1H-イミダゾール-1-イル)-フェニル]-N-インダン-1-イル-アクリルアミド、
(E)-3-[3-フルオロ-4-(1H-イミダゾール-1-イル)-フェニル]-2-ブテノン酸インダン-1-イル-アミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシフェニル]-N-(1,2,3,4-テトラヒドロナフタレン-1-イル)アクリルアミド、
(E)-3-[4-(1H-イミダゾール-1-イル)-3-メトキシメチルフェニル]-N-インダン-1-イル-アクリルアミドおよびそれらの薬学的に許容し得る塩からなる群から選ばれる化合物である請求項1ないし5のいずれかに記載のHCV感染症治療剤。 - HCV感染症の他の治療剤がインターフェロンである、請求項2ないし5のいずれかに記載のHCV感染治療剤。
- インターフェロンがインターフェロンα-2bである請求項6に記載のHCV感染症治療剤。
- HCV感染症の他の治療剤がリバビリンである、請求項2ないし5のいずれかに記載のHCV感染症治療剤。
- HCV感染症の他の治療剤がインターフェロンおよびリバビリンである、請求項2ないし8に記載のHCV感染症治療剤。
- HCV感染症の他の治療剤がHCVプロテアーゼ阻害剤またはHCVポリメラーゼ阻害剤である請求項2ないし5のいずれかに記載のHCV感染症治療剤。
- 請求項1に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩と、HCV感染症の他の治療剤とを含有する、HCV感染症治療用キット。
- 請求項1に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を含有するHCV感染症治療剤を製造するための、該化合物またはその薬学的に許容し得る塩の使用。
- HCV感染症治療剤が、該化合物またはその薬学的に許容し得る塩とともにHCV感染症の他の治療剤を含有する、請求項12に記載の使用。
- 請求項1に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を含有するHCV感染症治療剤であってHCV感染症の他の治療剤と併用するためのHCV感染症治療剤を製造するための、該化合物またはその薬学的に許容し得る塩の使用。
- HCV感染症治療剤が、HCV感染症の他の治療剤と同時にまたは順次に投与するためのHCV感染症治療剤である請求項14に記載の使用。
- HCV感染症の治療方法であって、請求項1に記載の一般式(I)で表される化合物またはその薬学的に許容し得る塩を必要とする対象に投与することを含有する治療方法。
- 該化合物またはその薬学的に許容し得る塩を、HCV感染症の他の治療剤と併用する、請求項16に記載の治療方法。
- 該化合物またはその薬学的に許容し得る塩とHCV感染症の他の治療剤とを、同時にまたは順次に投与する、請求項17に記載の治療方法。
Priority Applications (8)
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JP2012520458A JPWO2011158833A1 (ja) | 2010-06-15 | 2011-06-14 | Hcv感染症治療剤 |
KR1020137000942A KR20130121076A (ko) | 2010-06-15 | 2011-06-14 | Hcv 감염증 치료제 |
BR112012032058A BR112012032058A2 (pt) | 2010-06-15 | 2011-06-14 | agente para tratar infecção por hcv. |
US13/704,221 US20130095068A1 (en) | 2010-06-15 | 2011-06-14 | Agent for treating hcv infection |
CN201180028929XA CN102939284A (zh) | 2010-06-15 | 2011-06-14 | Hcv感染症治疗剂 |
SG2012090841A SG186273A1 (en) | 2010-06-15 | 2011-06-14 | Agent for treating hcv infection |
CA2802477A CA2802477A1 (en) | 2010-06-15 | 2011-06-14 | Agent for treating hcv infection |
EP11795738.1A EP2589595A4 (en) | 2010-06-15 | 2011-06-14 | MEANS FOR THE TREATMENT OF HCV INFECTIONS |
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JP2010-135742 | 2010-06-15 |
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PCT/JP2011/063602 WO2011158833A1 (ja) | 2010-06-15 | 2011-06-14 | Hcv感染症治療剤 |
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US (1) | US20130095068A1 (ja) |
EP (1) | EP2589595A4 (ja) |
JP (1) | JPWO2011158833A1 (ja) |
KR (1) | KR20130121076A (ja) |
CN (1) | CN102939284A (ja) |
BR (1) | BR112012032058A2 (ja) |
CA (1) | CA2802477A1 (ja) |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005115990A1 (ja) * | 2004-05-26 | 2005-12-08 | Eisai R & D Management Co., Ltd. | シンナミド化合物 |
WO2007047146A2 (en) * | 2005-10-11 | 2007-04-26 | Intermune, Inc. | Inhibitors of viral replication |
WO2007060821A1 (ja) * | 2005-11-24 | 2007-05-31 | Eisai R & D Management Co., Ltd. | 2環式シンナミド化合物 |
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ZA200804446B (en) * | 2005-11-24 | 2009-12-30 | Eisai R&D Man Co Ltd | Bicyclic cinnamide compound |
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2011
- 2011-06-14 SG SG2012090841A patent/SG186273A1/en unknown
- 2011-06-14 CN CN201180028929XA patent/CN102939284A/zh active Pending
- 2011-06-14 BR BR112012032058A patent/BR112012032058A2/pt not_active IP Right Cessation
- 2011-06-14 KR KR1020137000942A patent/KR20130121076A/ko not_active Application Discontinuation
- 2011-06-14 JP JP2012520458A patent/JPWO2011158833A1/ja not_active Withdrawn
- 2011-06-14 WO PCT/JP2011/063602 patent/WO2011158833A1/ja active Application Filing
- 2011-06-14 CA CA2802477A patent/CA2802477A1/en not_active Abandoned
- 2011-06-14 EP EP11795738.1A patent/EP2589595A4/en not_active Withdrawn
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2005115990A1 (ja) * | 2004-05-26 | 2005-12-08 | Eisai R & D Management Co., Ltd. | シンナミド化合物 |
WO2007047146A2 (en) * | 2005-10-11 | 2007-04-26 | Intermune, Inc. | Inhibitors of viral replication |
WO2007060821A1 (ja) * | 2005-11-24 | 2007-05-31 | Eisai R & D Management Co., Ltd. | 2環式シンナミド化合物 |
Non-Patent Citations (2)
Title |
---|
See also references of EP2589595A4 * |
YILI DING ET AL.: "Synthesis of Thiazolone- based Sulfonamides as Inhibitors of HCV NS5B Polymerase", BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, vol. 17, 2007, pages 841 - 845, XP005835951 * |
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JPWO2011158833A1 (ja) | 2013-08-19 |
US20130095068A1 (en) | 2013-04-18 |
EP2589595A1 (en) | 2013-05-08 |
EP2589595A4 (en) | 2013-11-27 |
CA2802477A1 (en) | 2011-12-22 |
KR20130121076A (ko) | 2013-11-05 |
BR112012032058A2 (pt) | 2019-09-24 |
SG186273A1 (en) | 2013-01-30 |
CN102939284A (zh) | 2013-02-20 |
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