WO2023085432A1 - 抗SARS-CoV-2薬 - Google Patents
抗SARS-CoV-2薬 Download PDFInfo
- Publication number
- WO2023085432A1 WO2023085432A1 PCT/JP2022/042332 JP2022042332W WO2023085432A1 WO 2023085432 A1 WO2023085432 A1 WO 2023085432A1 JP 2022042332 W JP2022042332 W JP 2022042332W WO 2023085432 A1 WO2023085432 A1 WO 2023085432A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- heterocyclyl
- cycloalkyl
- alkenyl
- cycloalkynyl
- Prior art date
Links
- 229940079593 drug Drugs 0.000 title claims abstract description 39
- 239000003814 drug Substances 0.000 title claims abstract description 39
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 63
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 36
- 239000001257 hydrogen Substances 0.000 claims abstract description 34
- MDFFNEOEWAXZRQ-UHFFFAOYSA-N aminyl Chemical compound [NH2] MDFFNEOEWAXZRQ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 150000003839 salts Chemical class 0.000 claims abstract description 22
- 239000000651 prodrug Substances 0.000 claims abstract description 20
- 229940002612 prodrug Drugs 0.000 claims abstract description 20
- 239000012453 solvate Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 13
- 150000002367 halogens Chemical class 0.000 claims abstract description 13
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 claims abstract description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 89
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- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 53
- 125000004648 C2-C8 alkenyl group Chemical group 0.000 claims description 50
- 125000004649 C2-C8 alkynyl group Chemical group 0.000 claims description 48
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 38
- 125000000392 cycloalkenyl group Chemical group 0.000 claims description 30
- 125000006297 carbonyl amino group Chemical group [H]N([*:2])C([*:1])=O 0.000 claims description 24
- 125000003118 aryl group Chemical group 0.000 claims description 23
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- 125000001072 heteroaryl group Chemical group 0.000 claims description 16
- 125000005018 aryl alkenyl group Chemical group 0.000 claims description 15
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 15
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- 125000004446 heteroarylalkyl group Chemical group 0.000 claims description 14
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- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 7
- 125000000304 alkynyl group Chemical group 0.000 claims description 6
- RDOWQLZANAYVLL-UHFFFAOYSA-N phenanthridine Chemical group C1=CC=C2C3=CC=CC=C3C=NC2=C1 RDOWQLZANAYVLL-UHFFFAOYSA-N 0.000 claims description 6
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- 231100000211 teratogenicity Toxicity 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 1
- 125000005958 tetrahydrothienyl group Chemical group 0.000 description 1
- 125000004632 tetrahydrothiopyranyl group Chemical group S1C(CCCC1)* 0.000 description 1
- 229940126585 therapeutic drug Drugs 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000029812 viral genome replication Effects 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/47—Quinolines; Isoquinolines
- A61K31/473—Quinolines; Isoquinolines ortho- or peri-condensed with carbocyclic ring systems, e.g. acridines, phenanthridines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D221/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
- C07D221/02—Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
- C07D221/04—Ortho- or peri-condensed ring systems
- C07D221/06—Ring systems of three rings
- C07D221/10—Aza-phenanthrenes
- C07D221/12—Phenanthridines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—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
- C07D401/02—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
- C07D401/12—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 chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- the present invention relates to anti-coronavirus drugs.
- Coronaviruses are viruses that originally cause cold symptoms in humans, and four types of coronaviruses are known, and 10 to 15% of colds are caused by these viruses. In addition, previously known coronaviruses cause severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) with high fatality rates. There are about 8,000 SARS patients with a fatality rate of about 10% and about 2,500 MERS patients with a fatality rate of about 35%. Coronaviruses are positive-strand RNA viruses having an envelope with a diameter of about 100 nm. SARS-CoV is classified as a second-class pathogen, and MERS-CoV is classified as a third-class pathogen.
- SARS-CoV is classified as a second-class pathogen
- MERS-CoV is classified as a third-class pathogen.
- Paxlobide is a combination drug of nilmatrelvir, a low-molecular-weight compound that inhibits the function of the main protease required for viral replication, and ritonavir, which acts as a booster to maintain its blood concentration.
- these drugs have some drawbacks such as side effects such as teratogenicity and problems in combination with other drugs. Therefore, it is of great importance to identify and develop novel agents with selective and potent antiviral effects against SARS-CoV-2.
- Patent Document 1 phenanthridinone derivatives are effective against human hepatitis C virus and have filed a patent application (Patent Document 1).
- Patent Document 1 no relationship between phenanthridinone derivatives and anti-coronavirus activity has been reported so far.
- An object of the present invention is to provide an antiviral drug that is effective against coronaviruses such as SARS-CoV-2.
- the present inventors have established an anti-coronavirus assay system for drugs and screened various drugs.
- the anti-coronavirus effect against coronavirus was recognized, and the present invention was completed.
- R 1 is C 1 -C 8 alkyl, C 2 -C 8 alkenyl, C 2 -C 8 alkynyl, C 3 -C 6 cycloalkyl, C 3 -C 6 cycloalkenyl, C 4 -C 6 cycloalkynyl, heterocyclyl , aryl, arylalkyl, arylalkenyl, heteroaryl and heteroarylalkyl, each of which is independently unsubstituted or one or more of halogen, hydroxyl, NH2 , NO2 , C( O ) Z (Z is hydrogen, hydroxyl, C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl , C3 - C6 cycloalkyl , C3 - C6 cycloalkenyl, C4- C6 cycloalky
- R 7 and R 8 are NH 2 , NH-C(O)Z (Z is C 1 -C 8 alkyl, heterocyclyl or NH-(C 1 -C 8 alkyl); groups are unsubstituted or substituted by one or more hydroxyl or NH2 ), N( R10 )( R11 ) ( R10 and R11 are each independently C 1 - C8 alkyl or arylalkyl, said group being unsubstituted or having one or more of hydroxyl, O-( C1 - C8 alkyl), NH2 , N( CH3 ) 2 or substituted by CONH 2 ) or NH(R 10 ) (R 10 is C 1 -C 8 alkyl, arylalkyl or heterocyclyl, said group being unsubstituted or one or more hydroxyl, O—(C 1 )
- R 8 is NH(R 10 ) (where R 10 is C 2 -C 5 alkyl substituted with 1 or 2 hydroxyls) or NH—C(O)Z (where Z is substituted with 1 hydroxyl) (1), a pharmaceutically acceptable salt thereof, a solvate thereof, or a prodrug thereof.
- R 1 is C 3 -C 7 alkyl, a pharmaceutically acceptable salt thereof, a solvate thereof, or a prodrug thereof .
- the anti-coronavirus drug according to (8) above which is used for prevention or treatment of COVID-19.
- (10) Use of a compound, a pharmaceutically acceptable salt thereof, a solvate thereof, or a prodrug thereof according to any one of (1) to (6) above in the manufacture of an anti-coronavirus drug.
- (11) The use according to (10) above, wherein the anti-coronavirus drug is an anti-SARS-CoV-2 drug.
- the anti-coronavirus drug is used for the prevention or treatment of COVID-19.
- an antiviral drug effective against coronaviruses such as SARS-CoV-2 can be provided.
- alkyl means a straight or branched chain aliphatic hydrocarbon group containing the specified number of carbon atoms.
- C 1 -C 8 alkyl means a straight or branched saturated hydrocarbon chain containing at least 1 and at most 8 carbon atoms.
- Suitable alkyl include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n -octyl and the like.
- alkenyl means a group in which one or more C-C single bonds of the above alkyl are replaced with double bonds.
- Suitable alkenyls include, but are not limited to, vinyl, 1-propenyl, allyl, 1-methylethenyl (isopropenyl), 1-butenyl, 2-butenyl, 3-butenyl, 1-methyl-2-propenyl, 2 -methyl-2-propenyl, 1-methyl-1-propenyl, 2-methyl-1-propenyl, 1-pentenyl, 1-hexenyl, n-heptenyl, 1-octenyl and the like.
- alkynyl means a group in which one or more C-C single bonds of the alkyl are substituted with triple bonds.
- Suitable alkynyls include, but are not limited to, ethynyl, 1-propynyl, 2-propynyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-methyl-2-propynyl, 1-pentynyl, 1-hexynyl , 1-heptynyl, 1-octynyl and the like.
- cycloalkyl means a cycloaliphatic alkyl containing the specified number of carbon atoms.
- C3 - C6 cycloalkyl means a cyclic hydrocarbon group containing at least 3 and at most 6 carbon atoms.
- Suitable cycloalkyls include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and the like.
- cycloalkenyl means a group in which one or more C-C single bonds of the cycloalkyl are replaced with double bonds.
- Suitable cycloalkenyls include, but are not limited to, cyclopropenyl, cyclobutenyl, cyclopentenyl, cyclohexenyl, and the like.
- cycloalkynyl means a group in which one or more C-C single bonds of the cycloalkyl are replaced with triple bonds.
- Suitable cycloalkynyls include, but are not limited to, cyclobutynyl, cyclopentynyl, cyclohexynyl, and the like.
- heterocyclyl means that one or more carbon atoms of said cycloalkyl, cycloalkenyl or cycloalkynyl are each independently selected from nitrogen (N), sulfur (S) and oxygen (O) It means a group substituted with a heteroatom.
- N or S includes substitution of N-oxides or S by oxides or dioxides, respectively.
- Suitable heterocyclyls include, but are not limited to, pyrrolidinyl, tetrahydrofuranyl, dihydrofuranyl, tetrahydrothienyl, tetrahydropyranyl, dihydropyranyl, tetrahydrothiopyranyl, piperidino, morpholino, thiomorpholino, thioxanyl, piperazinyl, and the like. can be mentioned.
- aryl means an aromatic ring group having 6 to 15 carbon atoms. Suitable aryl include, but are not limited to, phenyl, naphthyl, anthryl (anthracenyl), and the like.
- arylalkyl means a group in which one hydrogen atom of the alkyl is substituted with the aryl.
- Suitable arylalkyls include, but are not limited to, benzyl, 1-phenethyl, 2-phenethyl and the like.
- arylalkenyl means a group in which one hydrogen atom of the alkenyl is substituted with the aryl. Suitable arylalkenyls include, but are not limited to, styryl, and the like.
- heteroaryl means that one or more carbon atoms of said aryl have been replaced with heteroatoms each independently selected from nitrogen (N), sulfur (S) and oxygen (O) means the base.
- N nitrogen
- S sulfur
- O oxygen
- substitution by N or S includes substitution of N-oxides or S by oxides or dioxides, respectively.
- Suitable heteroaryl include, but are not limited to, furanyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, thiazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiadiazolyl, isothiazolyl, pyridyl, pyridazinyl, pyrazinyl, pyrimidinyl, quinolinyl, Examples include isoquinolinyl, indolyl, and the like.
- heteroarylalkyl means a group in which one hydrogen atom of the above alkyl is substituted with the above heteroaryl.
- Each of the groups described above are independently unsubstituted or contain one or more halogen, hydroxyl, NH2 , NO2 , C(O)Z, where Z is hydrogen, hydroxyl, C1 - C 8 alkyl, C2 - C8 alkenyl, C2- C8 alkynyl, C3 - C6 cycloalkyl, C3 - C6 cycloalkenyl, C4 - C6 cycloalkynyl, heterocyclyl, NH2 or NH-(C 1 - C8 alkyl)), NH-C(O)Z (where Z is hydrogen, hydroxyl, C1- C8 alkyl, C2 - C8 alkenyl, C2 - C8 alkynyl, C3 - C6 cycloalkyl, C 3 -C 6 cycloalkenyl, C 4 -C 6 cycloalkynyl, heterocyclyl, NH 2 or NH-(C
- halogen or halo means fluorine, chlorine, bromine or iodine.
- the "salt" is preferably a pharmaceutically acceptable salt.
- the counter ion of the compound represented by formula (I) includes, but is not limited to, cations such as sodium ion, potassium ion, calcium ion and magnesium ion, or chloride ion and bromide ion.
- solvates of the compound represented by formula (I) or salts thereof include hydrates.
- the compound represented by Formula (I), its salt, or solvate thereof may be a deuterium conversion product in which 1 H is converted to 2 H(D). Such compounds are also included in the present invention.
- prodrug means any compound of formula (I) that, when administered to a biological system, results in a spontaneous chemical reaction or by a catalyzed enzymatic or metabolic reaction. indicates a compound.
- Groups constituting prodrugs used for hydroxyl or amino groups include, for example, C 2-7 -acyl group, C 1-6 -alkoxy(C 2-7 -acyl) group, C 1-6 -alkoxycarbonyl (C 2-7 -acyl) group, C 1-6 -alkoxycarbonyl group, C 1-6 -alkoxy(C 2-7 -alkoxycarbonyl) group, (C 2-7 -acyloxy)methyl group, 1-( C 2-7 -acyloxy)ethyl group, (C 2-7 -alkoxycarbonyl)oxymethyl group, 1-[(C 2-7 -alkoxycarbonyl)oxy]ethyl group and the like, and C 2-7 -acyl C 1-6 -alkoxycarbonyl
- Groups constituting prodrugs used in carboxyl groups include, for example, C 1-6 -alkyl groups, C 1-6 -alkoxy-C 1-6 -alkyl groups, (C 2-7 -acyloxy)methyl groups , 1-(C 2-7 -acyloxy)ethyl group, (C 2-7 -alkoxycarbonyl)oxymethyl group, 1-[(C 2-7 -alkoxycarbonyl)oxy]ethyl group and the like, and C 1 -6 -alkyl groups, C 1-6 -alkoxy-C 1-6 -alkyl groups are preferred.
- the compounds represented by formula (I), their pharmaceutically acceptable salts, their solvates, or their prodrugs also include stereoisomers such as racemates and optically active isomers.
- R 1 is preferably C 3 -C 7 alkyl, more preferably C 4 alkyl and R 3 is preferably 1,1,1,3,3,3 -hexafluoro-2-hydroxypropan-2-yl.
- R 7 and R 8 is NH 2 , NH-C(O)Z (Z is C 1 -C 8 alkyl, heterocyclyl or NH-(C 1 - C 8 alkyl), said groups being unsubstituted or substituted by one or more hydroxyl or NH 2 ), N(R 10 )(R 11 ) (R 10 and R 11 are each independently C 1 -C 8 alkyl or arylalkyl, said groups being unsubstituted or one or more of hydroxyl, O--(C 1 -C 8 alkyl), NH 2 , N( CH3 ) 2 or CONH2 ) or NH( R10 ) ( R10 is C1 - C8 alkyl, arylalkyl or heterocyclyl, said group being unsubstituted or substituted by one or more hydroxyl, O-( C1 - C8 alkyl), NH2 , N( CH3 ) 2
- R1 is C3 - C7 alkyl
- R3 is 1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl
- R2 , R4 , R5 , R 6 and R 9 are hydrogen
- at least one of R 7 and R 8 is NH 2 , NH-C(O)Z (Z is C 1 -C 8 alkyl, heterocyclyl or NH-(C 1 -C 8 alkyl) and said groups are unsubstituted or substituted by one or more hydroxyl or NH2 )
- N(R 10 )(R 11 ) R 10 and R 11 are each independently is C 1 -C 8 alkyl or arylalkyl, said group being unsubstituted or one or more of hydroxyl, O--(C 1 -C 8 alkyl), NH 2 , N( CH 3 ) 2 or CONH 2 ) or
- R1 is C4 alkyl
- R3 is 1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl
- R2 , R4 , R5 , R6 and R 9 is hydrogen
- at least one of R 7 and R 8 is NH 2 , NH—C(O)Z, where Z is C 1 -C 8 alkyl, heterocyclyl or NH—(C 1 -C 8 alkyl)
- Said groups are unsubstituted or substituted with one or more hydroxyl or NH2 ), N( R10 )( R11 ) ( R10 and R11 are each independently C 1 -C 8 alkyl or arylalkyl, said group being unsubstituted or having one or more hydroxyl, O--(C 1 -C 8 alkyl), NH 2 , N(CH 3 ) 2 or CONH 2 ) or NH(R 10 ) (where R 10 is C 1 -
- R1 is C4 alkyl
- R3 is 1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl
- R2 , R4 , R5 , R6 , R 7 and R 9 are hydrogen
- R 8 is NH(R 10 ) (R 10 is C 2 -C 3 alkyl substituted with 1 or 2 hydroxyls, such as CH 2 CH 2 OH, CH 2 CH(OH) CH2OH ).
- R1 is C4 alkyl
- R3 is 1,1,1,3,3,3-hexafluoro-2-hydroxypropan-2-yl
- R8 is NH 2
- R 2 , R 4 , R 5 , R 6 , R 7 and R 9 are hydrogen (NR-31-5)
- N-(p-nitrobenzoyl)-substituted product (NR-31-3).
- N,N-dimethylacetamide, cesium carbonate, palladium(II) acetate, and tricyclohexylphosphine tetrafluoroborate were added in order, and the mixture was stirred under heating.
- -Nitrophenanthridinone derivative (NR-31-4) is obtained.
- a 9-nitrophenanthridinone derivative (NR-31-5 ) can be obtained.
- the 9-aminophenanthridinone derivative (NR-31-5) can be converted into various N-substituted compounds by modifying it by N-alkylation, N-acylation and the like.
- p-fluorobenzoyl chloride is used in place of p-nitrobenzoyl chloride to obtain a 9-fluorophenanthridinone derivative, followed by 3-amino-1,2-propanediol or the like. It can be converted into various N-substituted forms by reacting with amine compounds.
- 8-aminophenanthridinone derivatives can be obtained, which are N-alkylated, N-acyl It can be converted into various N-substituted forms by modification such as conversion.
- a commonly used method such as column chromatography using silica gel as a carrier, methanol, ethanol, chloroform, dimethyl sulfoxide, n-hexane-ethyl acetate, water, etc. Crystal method can be used.
- Elution solvents for column chromatography include methanol, ethanol, chloroform, acetone, hexane, dichloromethane, ethyl acetate, and mixed solvents thereof.
- the above compound can be formulated as an anti-coronavirus drug in combination with a conventional pharmaceutical carrier.
- the dosage form is not particularly limited, and may be appropriately selected and used as necessary, including tablets, capsules, granules, fine granules, powders, sustained-release preparations, liquids, suspensions, emulsions, and syrups. , oral agents such as elixirs, and parenteral agents such as injections and suppositories.
- Oral preparations are manufactured by conventional methods using, for example, starch, lactose, sucrose, mannitol, carboxymethylcellulose, inorganic salts, and the like.
- binders, disintegrants, surfactants, lubricants, fluidity promoters, corrigents, coloring agents, perfumes, and the like can be added as appropriate.
- binders examples include starch, dextrin, gum arabic, gelatin, hydroxypropyl starch, methylcellulose, sodium carboxymethylcellulose, hydroxypropylcellulose, crystalline cellulose, ethylcellulose, polyvinylpyrrolidone, and macrogol.
- disintegrants include starch, hydroxypropyl starch, carboxymethylcellulose sodium, carboxymethylcellulose calcium, carboxymethylcellulose, low-substituted hydroxypropylcellulose and the like.
- surfactants include sodium lauryl sulfate, soybean lecithin, sucrose fatty acid esters, polysorbate 80, and the like.
- lubricants examples include talc, waxes, hydrogenated vegetable oils, sucrose fatty acid esters, magnesium stearate, calcium stearate, aluminum stearate, and polyethylene glycol.
- Fluidity promoters include, for example, light anhydrous silicic acid, dry aluminum hydroxide gel, synthetic aluminum silicate, and magnesium silicate.
- Injections are prepared according to a conventional method, and diluents such as distilled water for injection, physiological saline, aqueous glucose solution, olive oil, sesame oil, peanut oil, soybean oil, corn oil, propylene glycol, polyethylene glycol, etc., can be generally used. . Further, if necessary, bactericides, antiseptics, stabilizers, tonicity agents, soothing agents and the like may be added. In addition, from the viewpoint of stability, injections can also be frozen after being filled in vials or the like, and water is removed by a normal freeze-drying technique, and a liquid preparation can be reprepared from the freeze-dried product immediately before use. The proportion of the compound of formula (I) in the injection may vary between 5 and 50% by weight, but is not limited thereto.
- parenteral agents include suppositories for rectal administration, etc., and are manufactured according to conventional methods.
- the formulated anti-coronavirus drug differs depending on the dosage form, administration route, etc., it can be administered, for example, 1 to 4 times a day for a period of 1 week to 3 months.
- the weight of the compound of formula (I) is usually 0.1 to 6000 mg for an adult, although this varies depending on the patient's age, body weight and degree of disease. , preferably 100 to 2000 mg, in several divided doses per day.
- the weight of the compound of formula (I) for adults is usually 0.1 to 0.1, although it varies depending on the patient's age, body weight and degree of disease. It is suitable to administer 6000 mg, preferably 100-2000 mg, by intravenous injection, intravenous drip infusion, subcutaneous injection or intramuscular injection.
- the anti-coronavirus drug of the present invention exhibits antiviral activity against coronaviruses that cause COVID-19, severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), etc. is used for the prevention or treatment of coronavirus infections in In the present invention, treatment also includes prevention of exacerbation.
- SARS severe acute respiratory syndrome
- MERS Middle East respiratory syndrome
- the compound represented by formula (I) can be contained as the sole active ingredient in the pharmaceutical composition, or can contain other active ingredients.
- the compound of formula (I) may also be used in combination with other agents effective against coronavirus infections such as SARS-CoV-2. These may be administered separately during the course of treatment, or combined with the compounds of formula (I) above in a single dosage form such as a tablet, intravenous solution, or capsule.
- agents include, for example, remdesivir and the like.
- Coronaviruses are known to infect various animals, and SARS-CoV is also known to infect various animals across species barriers. Therefore, the therapeutic target of the anti-coronavirus drug of the present invention is not limited to humans, and various animals such as pets (e.g., dogs and cats), pigs, camels, bats, palm civets, tigers, ferrets, golden hamsters, minks, and sparrows. encompasses
- Anti-SARS-CoV-2 effect (assay with HEK293T/ACE2 cells) (1) Determination of cell viability (absorbance) HEK293T/ACE2 cells (2 ⁇ 10 4 cells/well) were seeded in microplates with 100 ⁇ L of cell culture medium. After culturing for 24 hours, 50 ⁇ L of various drugs obtained by diluting the drug stock solution to 4 times the final concentration were added to each well, and SARS-CoV-2 (WK-521) (obtained from the National Institute of Infectious Diseases) was added. 50 ⁇ L of virus solution was added at a multiplicity of infection (MOI) of 0.1 (infection plate).
- MOI multiplicity of infection
- Table 3 shows the evaluation results of the anti-SARS-CoV-2 effects of various phenanthridinone derivatives.
- IC50 50% inhibitory concentration (drug concentration that reduces virus production and replication by 50%)
- IC90 90% inhibitory concentration (drug concentration that reduces virus production and replication by 90%)
- CC50 50% toxic concentration (concentration of drug that reduces the number of viable cells by 50%)
- IC50 and IC90 show the results of qPCR measurement, and CC50 shows the results of cell viability determination (absorbance).
- Table 3 shows that phenanthridinone derivatives have anti-SARS-CoV-2 effects.
- Example 2 Anti-SARS-CoV effect IC 50 and IC 90 were obtained in the same manner as in Example 1, except that SARS-CoV (SARS-CoV-HKU-39849) was used instead of SARS-CoV-2. rice field. Table 4 shows the evaluation results of the anti-SARS-CoV effects of various phenanthridinone derivatives.
- Example 3 Anti-MERS-CoV effect IC 50 and IC 90 were obtained in the same manner as in Example 1, except that MERS-CoV (MERS-CoV-EMC/2012) was used instead of SARS-CoV-2. rice field. Table 5 shows the evaluation results of the anti-MERS-CoV effects of various phenanthridinone derivatives.
- MOI at infection
- Anti-SARS-CoV-2 efficacy and cytotoxicity of drugs were determined by comparing viable cell numbers in infected and uninfected cells, respectively, with those in the absence of drug. Table 6 shows the evaluation results of the effect of NR-31 on each SARS-CoV-2 strain.
- EC 50 50% effective concentration (concentration of drug that inhibits cell death induced by SARS-CoV-2 infection by 50%)
- CC50 50% toxic concentration (concentration of drug that reduces the number of viable cells by 50%)
- the phenanthridinone derivative was synthesized as follows.
- the residue was dissolved in cyclopentyl methyl ether and treated with hydrochloric acid for deprotection.
- the reaction solution was neutralized with saturated aqueous sodium bicarbonate, and the aqueous layer was extracted with ethyl acetate.
- the organic layer was washed with city water and saturated brine in that order.
- the organic layer was dried over sodium sulfate, the desiccant was removed by filtration, and the filtrate was concentrated. Purification of the residue gave NR-30.
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Abstract
Description
コロナウイルスは、直径約100nmのエンベロープを有する+鎖RNAウイルスであり、SARS-CoVは第二種病原体、MERS-CoVは第三種病原体に分類されている。
しかしながら、フェナントリジノン誘導体と抗コロナウイルス活性との関係についてはこれまで報告されたことはない。
(1)式(I):
R1は、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール及びヘテロアリールアルキル(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)から選択され;
R2~R9は、それぞれ独立して、水素、ハロゲン、ヒドロキシル、NH2、NO2、OSO3H、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(NH)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、NH(R10)(R10はC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)及びQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)、並びにC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール及びヘテロアリールアルキル(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)からなる置換基群Aから選択され;
ただし、R2~R5のいずれか2個は、それらが結合するフェナントリジン環上の炭素原子と一緒になってフェナントリジン環と縮合するシクロアルキル、ヘテロシクリル若しくはアリール(前記フェナントリジン環と縮合するシクロアルキル、ヘテロシクリル若しくはアリールは、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)を形成してもよく、
R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(NH)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)又はNH(R10)(R10はC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)である]
で表される化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(2)R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(ZはC1~C8アルキル、ヘテロシクリル又はNH-(C1~C8アルキル)であり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル又はNH2によって置換されている)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル又はアリールアルキルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)又はNH(R10)(R10はC1~C8アルキル、アリールアルキル又はヘテロシクリルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)である前記(1)に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(3)R8がNH(R10)(R10は1個若しくは2個のヒドロキシルで置換されたC2~C5アルキル)又はNH-C(O)Z(Zは1個のヒドロキシルで置換されたヘテロシクリルである)である前記(1)に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(4)R1がC3~C7アルキルである前記(1)~(3)のいずれかに記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(5)R1がC4アルキルである前記(1)~(3)のいずれかに記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(6)R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イルである前記(1)~(5)のいずれかに記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
(7)前記(1)~(6)のいずれかに記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグを有効成分とする抗コロナウイルス薬。
(8)抗SARS-CoV-2薬である前記(7)に記載の抗コロナウイルス薬。
(9)COVID-19の予防又は治療に用いられる前記(8)に記載の抗コロナウイルス薬。
(10)抗コロナウイルス薬の製造における前記(1)~(6)のいずれかに記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグの使用。
(11)抗コロナウイルス薬が抗SARS-CoV-2薬である前記(10)に記載の使用。
(12)抗コロナウイルス薬がCOVID-19の予防又は治療に用いられる前記(10)に記載の使用。
(a) R1がC3~C7アルキル、R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イル、R2、R4、R5、R6及びR9が水素;R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(ZはC1~C8アルキル、ヘテロシクリル又はNH-(C1~C8アルキル)であり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル又はNH2によって置換されている)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル又はアリールアルキルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)又はNH(R10)(R10はC1~C8アルキル、アリールアルキル又はヘテロシクリルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)である化合物;
(b) R1がC3~C7アルキル、R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イル、R2、R4、R5、R6、R7及びR9が水素;R8がNH(R10)(R10は1個若しくは2個のヒドロキシルで置換されたC2~C5アルキル、例えばCH2CH2OH、CH2CH(OH)CH2OH)又はNH-C(O)Z(Zは1個のヒドロキシルで置換されたヘテロシクリル、例えば4-ヒドロキシ-2-ピロリジニルである)である化合物;
(c) R1がC4アルキル、R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イル、R2、R4、R5、R6及びR9が水素;R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(ZはC1~C8アルキル、ヘテロシクリル又はNH-(C1~C8アルキル)であり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル又はNH2によって置換されている)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル又はアリールアルキルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)又はNH(R10)(R10はC1~C8アルキル、アリールアルキル又はヘテロシクリルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)である化合物;
(d) R1がC4アルキル、R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イル、R2、R4、R5、R6、R7及びR9が水素;R8がNH(R10)(R10は1個若しくは2個のヒドロキシルで置換されたC2~C5アルキル、例えばCH2CH2OH、CH2CH(OH)CH2OH)又はNH-C(O)Z(Zは1個のヒドロキシルで置換されたヘテロシクリル、例えば4-ヒドロキシ-2-ピロリジニルである)である化合物。
(e) R1がC4アルキル、R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イル、R2、R4、R5、R6、R7及びR9が水素;R8がNH(R10)(R10は1個若しくは2個のヒドロキシルで置換されたC2~C3アルキル、例えばCH2CH2OH、CH2CH(OH)CH2OH)である化合物。
9-アミノフェナントリジノン誘導体(NR-31-5)をN-アルキル化、N-アシル化等により修飾することにより種々のN-置換体に変換することができる。
(1)細胞生存率判定(吸光度)
HEK293T/ACE2細胞(2×104細胞/ウェル)を細胞培養液100μLと共にマイクロプレートに播種した。24時間培養後、薬剤原液を最終濃度の4倍濃度に希釈した種々の薬剤を50μLずつ各ウェルに添加し、更にSARS-CoV-2(WK-521)(国立感染症研究所より入手)をmultiplicity of infection(MOI)=0.1にて50μLのウイルス液を添加した(感染用プレート)。細胞用プレートには、薬剤原液を最終濃度の4倍濃度に希釈した種々の薬剤を50μLずつ各ウェルに添加し、更に50μLの細胞培養液を添加した。3日間培養後、感染用プレートの培養上清を新たなプレートに移し、-80℃にて保存した。細胞用プレートの培養液を110μL捨て、10μLのCell Counting Kit-8を添加した。CO2インキュベーターにて2時間培養後、450nm(620nm)にて測定した。
50μLの培養上清に対して50μL DNA/RNA Shield(Zymo Research)を加え、Quick-RNA Viral 96 kit (Zymo Research)を用い、仕様書に従ってRNA抽出を行った(15μL)。抽出したRNAをNuclease-free waterを用いて10倍希釈し、これをRNAサンプルとした。RNAサンプルをHigh-Capacity RNA-to-cDNATM Kit(Thermo Fisher Scientific)を用いて、cDNAを合成した(表1)。表2に示す条件でqPCR測定を行った。
IC90:90%阻害濃度(ウイルスの産生・複製を90%低下させる薬剤の濃度)
CC50:50%毒性濃度(生細胞数を50%減少させる薬剤の濃度)
実施例1において、SARS-CoV-2の代わりにSARS-CoV(SARS-CoV-HKU-39849)を用いる以外は同様にして、IC50及びIC90を得た。種々のフェナントリジノン誘導体の抗SARS-CoV効果の評価結果を表4に示す。
実施例1において、SARS-CoV-2の代わりにMERS-CoV(MERS-CoV-EMC/2012)を用いる以外は同様にして、IC50及びIC90を得た。種々のフェナントリジノン誘導体の抗MERS-CoV効果の評価結果を表5に示す。
SARS-CoV-2に高い感受性を有するVeroE6/TMPRSS2細胞を細胞培養液100μLと共にマイクロプレートに播種した(2×104細胞/ウェル)。24時間培養後、薬剤原液を最終濃度の4倍濃度に希釈したNR-31を50μLずつ各ウェルに添加し、更にSARS-CoV-2各変異株(国立感染症研究所より入手)をmultiplicity of infection(MOI)=0.01にて50μLずつ添加後、37℃で3日間培養した。培養後、110μLの培養上清を捨て、10μLのCell Counting Kit-8((株)同仁化学研究所)(水溶性テトラゾリウム塩WST-8(2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium monosodium salt)を発色試薬として用いた生細胞数測定キット)を添加した。2時間培養後、100μLの塩酸2-プロパノールを添加し、十分に混合した後、新たなマイクロプレートに上清を移し、各ウェルの吸光度を450/620nmにて測定した。薬剤の抗SARS-CoV-2効果と細胞毒性は、それぞれ感染細胞と非感染細胞における生細胞数を薬剤非添加時のそれらと比較することにより判定した。
NR-31の各SARS-CoV-2株に対する効果の評価結果を表6に示す。
(1)NR-31-3の合成
合成例1~5に準じて、表3に記載のその他の化合物を合成した。
Claims (9)
- 式(I):
R1は、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール及びヘテロアリールアルキル(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)から選択され;
R2~R9は、それぞれ独立して、水素、ハロゲン、ヒドロキシル、NH2、NO2、OSO3H、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(NH)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、NH(R10)(R10はC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)及びQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)、並びにC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール及びヘテロアリールアルキル(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)からなる置換基群Aから選択され;
ただし、R2~R5のいずれか2個は、それらが結合するフェナントリジン環上の炭素原子と一緒になってフェナントリジン環と縮合するシクロアルキル、ヘテロシクリル若しくはアリール(前記フェナントリジン環と縮合するシクロアルキル、ヘテロシクリル若しくはアリールは、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、NO2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)を形成してもよく、
R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(NH)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)又はNH(R10)(R10はC1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)(前記の基は、それぞれ独立して、非置換であるか、或いは1個若しくは複数のハロゲン、ヒドロキシル、NH2、C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、NH-C(O)Z(Zは水素、ヒドロキシル、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、NH2若しくはNH-(C1~C8アルキル)である)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、アリールアルキル若しくはヘテロシクリルである)、C1~C8アルキル、C2~C8アルケニル、C2~C8アルキニル、C3~C6シクロアルキル、C3~C6シクロアルケニル、C4~C6シクロアルキニル、ヘテロシクリル、アリール、アリールアルキル、アリールアルケニル、ヘテロアリール、ヘテロアリールアルキル、Q-(C1~C8アルキル)、Q-(C2~C8アルケニル)、Q-(C2~C8アルキニル)、Q-(C3~C6シクロアルキル)、Q-(C3~C6シクロアルケニル)、Q-(C4~C6シクロアルキニル)、Q-(ヘテロシクリル)、Q-(アリール)、Q-(アリールアルキル)、Q-(ヘテロアリール)又はQ-(ヘテロアリールアルキル)(QはO、NH若しくはSである)によって置換されている)である]
で表される化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。 - R7及びR8の少なくともいずれかが、NH2、NH-C(O)Z(ZはC1~C8アルキル、ヘテロシクリル又はNH-(C1~C8アルキル)であり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル又はNH2によって置換されている)、N(R10)(R11)(R10及びR11は、それぞれ独立して、C1~C8アルキル又はアリールアルキルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)又はNH(R10)(R10はC1~C8アルキル、アリールアルキル又はヘテロシクリルであり、前記の基は、非置換であるか、或いは1個若しくは複数のヒドロキシル、O-(C1~C8アルキル)、NH2、N(CH3)2又はCONH2によって置換されている)である請求項1記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
- R8がNH(R10)(R10は1個若しくは2個のヒドロキシルで置換されたC2~C5アルキル)又はNH-C(O)Z(Zは1個のヒドロキシルで置換されたヘテロシクリルである)である請求項1記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
- R1がC3~C7アルキルである請求項1~3のいずれか1項に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
- R1がC4アルキルである請求項1~3のいずれか1項に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
- R3が1,1,1,3,3,3-ヘキサフルオロ-2-ヒドロキシプロパン-2-イルである請求項1~5のいずれか1項に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグ。
- 請求項1~6のいずれか1項に記載の化合物、その薬学的に許容される塩、それらの溶媒和物、又はそれらのプロドラッグを有効成分とする抗コロナウイルス薬。
- 抗SARS-CoV-2薬である請求項7記載の抗コロナウイルス薬。
- COVID-19の予防又は治療に用いられる請求項8記載の抗コロナウイルス薬。
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