WO2014039484A1 - Spirocyclic isoxazolines as antiparasitic agents - Google Patents
Spirocyclic isoxazolines as antiparasitic agents Download PDFInfo
- Publication number
- WO2014039484A1 WO2014039484A1 PCT/US2013/057935 US2013057935W WO2014039484A1 WO 2014039484 A1 WO2014039484 A1 WO 2014039484A1 US 2013057935 W US2013057935 W US 2013057935W WO 2014039484 A1 WO2014039484 A1 WO 2014039484A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- pyridine
- spiro
- cyano
- furo
- Prior art date
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- 150000002547 isoxazolines Chemical class 0.000 title abstract description 15
- 239000003096 antiparasitic agent Substances 0.000 title description 10
- 229940125687 antiparasitic agent Drugs 0.000 title description 9
- 239000000203 mixture Substances 0.000 claims abstract description 68
- 241001465754 Metazoa Species 0.000 claims abstract description 54
- 150000003839 salts Chemical class 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 39
- 150000001875 compounds Chemical class 0.000 claims description 243
- -1 cyano, hydroxyl Chemical group 0.000 claims description 125
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 83
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 41
- 239000001257 hydrogen Substances 0.000 claims description 40
- 229910052739 hydrogen Inorganic materials 0.000 claims description 40
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 39
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 39
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 125000005843 halogen group Chemical group 0.000 claims description 35
- 229910003827 NRaRb Inorganic materials 0.000 claims description 33
- 125000001424 substituent group Chemical group 0.000 claims description 28
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 25
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims description 23
- 238000011282 treatment Methods 0.000 claims description 19
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 17
- 206010061217 Infestation Diseases 0.000 claims description 15
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 14
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 claims description 13
- 125000004043 oxo group Chemical group O=* 0.000 claims description 12
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000005660 Abamectin Substances 0.000 claims description 10
- 208000030852 Parasitic disease Diseases 0.000 claims description 10
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 10
- 244000144972 livestock Species 0.000 claims description 10
- HLFSDGLLUJUHTE-SNVBAGLBSA-N Levamisole Chemical compound C1([C@H]2CN3CCSC3=N2)=CC=CC=C1 HLFSDGLLUJUHTE-SNVBAGLBSA-N 0.000 claims description 9
- 125000001153 fluoro group Chemical group F* 0.000 claims description 9
- 229960001614 levamisole Drugs 0.000 claims description 9
- CKVMAPHTVCTEMM-ALPQRHTBSA-N milbemycin oxime Chemical compound O1[C@H](C)[C@@H](C)CC[C@@]11O[C@H](C\C=C(C)\C[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)C(=N/O)/[C@H]3OC\2)O)C[C@H]4C1.C1C[C@H](C)[C@@H](CC)O[C@@]21O[C@H](C\C=C(C)\C[C@@H](C)\C=C\C=C/1[C@]3([C@H](C(=O)O4)C=C(C)C(=N/O)/[C@H]3OC\1)O)C[C@H]4C2 CKVMAPHTVCTEMM-ALPQRHTBSA-N 0.000 claims description 9
- 229940099245 milbemycin oxime Drugs 0.000 claims description 9
- YZBLFMPOMVTDJY-CBYMMZEQSA-N moxidectin Chemical compound O1[C@H](C(\C)=C\C(C)C)[C@@H](C)C(=N/OC)\C[C@@]11O[C@H](C\C=C(C)\C[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 YZBLFMPOMVTDJY-CBYMMZEQSA-N 0.000 claims description 9
- 229960004816 moxidectin Drugs 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 125000003601 C2-C6 alkynyl group Chemical group 0.000 claims description 8
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 8
- AFJYYKSVHJGXSN-KAJWKRCWSA-N selamectin Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1C(/C)=C/C[C@@H](O[C@]2(O[C@@H]([C@@H](C)CC2)C2CCCCC2)C2)C[C@@H]2OC(=O)[C@@H]([C@]23O)C=C(C)C(=N\O)/[C@H]3OC\C2=C/C=C/[C@@H]1C AFJYYKSVHJGXSN-KAJWKRCWSA-N 0.000 claims description 8
- 229960002245 selamectin Drugs 0.000 claims description 8
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 7
- AZSNMRSAGSSBNP-UHFFFAOYSA-N 22,23-dihydroavermectin B1a Natural products C1CC(C)C(C(C)CC)OC21OC(CC=C(C)C(OC1OC(C)C(OC3OC(C)C(O)C(OC)C3)C(OC)C1)C(C)C=CC=C1C3(C(C(=O)O4)C=C(C)C(O)C3OC1)O)CC4C2 AZSNMRSAGSSBNP-UHFFFAOYSA-N 0.000 claims description 7
- IBSREHMXUMOFBB-JFUDTMANSA-N 5u8924t11h Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O3)C=C[C@H](C)[C@@H](C(C)C)O4)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 IBSREHMXUMOFBB-JFUDTMANSA-N 0.000 claims description 7
- SPBDXSGPUHCETR-JFUDTMANSA-N 8883yp2r6d Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O[C@@H]([C@@H](C)CC4)C(C)C)O3)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1C[C@H](C)[C@@H]([C@@H](C)CC)O[C@@]21O[C@H](C\C=C(C)\[C@@H](O[C@@H]1O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C1)[C@@H](C)\C=C\C=C/1[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\1)O)C[C@H]4C2 SPBDXSGPUHCETR-JFUDTMANSA-N 0.000 claims description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 7
- 229950008167 abamectin Drugs 0.000 claims description 7
- QLFZZSKTJWDQOS-YDBLARSUSA-N doramectin Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O3)C=C[C@H](C)[C@@H](C3CCCCC3)O4)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C QLFZZSKTJWDQOS-YDBLARSUSA-N 0.000 claims description 7
- 229960003997 doramectin Drugs 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 7
- 229960002418 ivermectin Drugs 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- FXWHFKOXMBTCMP-WMEDONTMSA-N milbemycin Natural products COC1C2OCC3=C/C=C/C(C)CC(=CCC4CC(CC5(O4)OC(C)C(C)C(OC(=O)C(C)CC(C)C)C5O)OC(=O)C(C=C1C)C23O)C FXWHFKOXMBTCMP-WMEDONTMSA-N 0.000 claims description 7
- UFUASNAHBMBJIX-UHFFFAOYSA-N propan-1-one Chemical compound CC[C]=O UFUASNAHBMBJIX-UHFFFAOYSA-N 0.000 claims description 7
- 239000005894 Emamectin Substances 0.000 claims description 6
- 125000005119 alkyl cycloalkyl group Chemical group 0.000 claims description 6
- FSVJFNAIGNNGKK-UHFFFAOYSA-N 2-[cyclohexyl(oxo)methyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one Chemical compound C1C(C2=CC=CC=C2CC2)N2C(=O)CN1C(=O)C1CCCCC1 FSVJFNAIGNNGKK-UHFFFAOYSA-N 0.000 claims description 5
- 125000001246 bromo group Chemical group Br* 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229960002957 praziquantel Drugs 0.000 claims description 5
- FZRBKIRIBLNOAM-UHFFFAOYSA-N (E,E)-2-propynyl 3,7,11-trimethyl-2,4-dodecadienoate Chemical compound CC(C)CCCC(C)CC=CC(C)=CC(=O)OCC#C FZRBKIRIBLNOAM-UHFFFAOYSA-N 0.000 claims description 4
- NVEPPWDVLBMNMB-SNAWJCMRSA-N 1-methyl-2-[(e)-2-(3-methylthiophen-2-yl)ethenyl]-5,6-dihydro-4h-pyrimidine Chemical compound CN1CCCN=C1\C=C\C1=C(C)C=CS1 NVEPPWDVLBMNMB-SNAWJCMRSA-N 0.000 claims description 4
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 claims description 4
- FXJRDUKXWHFPND-NSHDSACASA-N 2-[(1s)-1-(2,3-dimethylphenyl)ethyl]-1h-imidazole Chemical compound C1([C@@H](C)C=2C(=C(C)C=CC=2)C)=NC=CN1 FXJRDUKXWHFPND-NSHDSACASA-N 0.000 claims description 4
- ZOCSXAVNDGMNBV-UHFFFAOYSA-N 5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-[(trifluoromethyl)sulfinyl]-1H-pyrazole-3-carbonitrile Chemical compound NC1=C(S(=O)C(F)(F)F)C(C#N)=NN1C1=C(Cl)C=C(C(F)(F)F)C=C1Cl ZOCSXAVNDGMNBV-UHFFFAOYSA-N 0.000 claims description 4
- NQPDXQQQCQDHHW-UHFFFAOYSA-N 6-chloro-5-(2,3-dichlorophenoxy)-2-(methylthio)-1H-benzimidazole Chemical compound ClC=1C=C2NC(SC)=NC2=CC=1OC1=CC=CC(Cl)=C1Cl NQPDXQQQCQDHHW-UHFFFAOYSA-N 0.000 claims description 4
- JFLRKDZMHNBDQS-UCQUSYKYSA-N CC[C@H]1CCC[C@@H]([C@H](C(=O)C2=C[C@H]3[C@@H]4C[C@@H](C[C@H]4C(=C[C@H]3[C@@H]2CC(=O)O1)C)O[C@H]5[C@@H]([C@@H]([C@H]([C@@H](O5)C)OC)OC)OC)C)O[C@H]6CC[C@@H]([C@H](O6)C)N(C)C.CC[C@H]1CCC[C@@H]([C@H](C(=O)C2=C[C@H]3[C@@H]4C[C@@H](C[C@H]4C=C[C@H]3C2CC(=O)O1)O[C@H]5[C@@H]([C@@H]([C@H]([C@@H](O5)C)OC)OC)OC)C)O[C@H]6CC[C@@H]([C@H](O6)C)N(C)C Chemical compound CC[C@H]1CCC[C@@H]([C@H](C(=O)C2=C[C@H]3[C@@H]4C[C@@H](C[C@H]4C(=C[C@H]3[C@@H]2CC(=O)O1)C)O[C@H]5[C@@H]([C@@H]([C@H]([C@@H](O5)C)OC)OC)OC)C)O[C@H]6CC[C@@H]([C@H](O6)C)N(C)C.CC[C@H]1CCC[C@@H]([C@H](C(=O)C2=C[C@H]3[C@@H]4C[C@@H](C[C@H]4C=C[C@H]3C2CC(=O)O1)O[C@H]5[C@@H]([C@@H]([C@H]([C@@H](O5)C)OC)OC)OC)C)O[C@H]6CC[C@@H]([C@H](O6)C)N(C)C JFLRKDZMHNBDQS-UCQUSYKYSA-N 0.000 claims description 4
- 239000005899 Fipronil Substances 0.000 claims description 4
- 239000005914 Metaflumizone Substances 0.000 claims description 4
- MIFOMMKAVSCNKQ-HWIUFGAZSA-N Metaflumizone Chemical compound C1=CC(OC(F)(F)F)=CC=C1NC(=O)N\N=C(C=1C=C(C=CC=1)C(F)(F)F)\CC1=CC=C(C#N)C=C1 MIFOMMKAVSCNKQ-HWIUFGAZSA-N 0.000 claims description 4
- YRWLZFXJFBZBEY-UHFFFAOYSA-N N-(6-butyl-1H-benzimidazol-2-yl)carbamic acid methyl ester Chemical compound CCCCC1=CC=C2N=C(NC(=O)OC)NC2=C1 YRWLZFXJFBZBEY-UHFFFAOYSA-N 0.000 claims description 4
- RAOCRURYZCVHMG-UHFFFAOYSA-N N-(6-propoxy-1H-benzimidazol-2-yl)carbamic acid methyl ester Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)NC2=C1 RAOCRURYZCVHMG-UHFFFAOYSA-N 0.000 claims description 4
- 239000005930 Spinosad Substances 0.000 claims description 4
- 229960002669 albendazole Drugs 0.000 claims description 4
- HXHWSAZORRCQMX-UHFFFAOYSA-N albendazole Chemical compound CCCSC1=CC=C2NC(NC(=O)OC)=NC2=C1 HXHWSAZORRCQMX-UHFFFAOYSA-N 0.000 claims description 4
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- 229960005473 fenbendazole Drugs 0.000 claims description 4
- IRHZVMHXVHSMKB-UHFFFAOYSA-N fenbendazole Chemical compound [CH]1C2=NC(NC(=O)OC)=NC2=CC=C1SC1=CC=CC=C1 IRHZVMHXVHSMKB-UHFFFAOYSA-N 0.000 claims description 4
- 229940013764 fipronil Drugs 0.000 claims description 4
- CPEUVMUXAHMANV-UHFFFAOYSA-N flubendazole Chemical compound C1=C2NC(NC(=O)OC)=NC2=CC=C1C(=O)C1=CC=C(F)C=C1 CPEUVMUXAHMANV-UHFFFAOYSA-N 0.000 claims description 4
- 229960004500 flubendazole Drugs 0.000 claims description 4
- FYQGBXGJFWXIPP-UHFFFAOYSA-N hydroprene Chemical compound CCOC(=O)C=C(C)C=CCC(C)CCCC(C)C FYQGBXGJFWXIPP-UHFFFAOYSA-N 0.000 claims description 4
- 229930000073 hydroprene Natural products 0.000 claims description 4
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- 229960003439 mebendazole Drugs 0.000 claims description 4
- BAXLBXFAUKGCDY-UHFFFAOYSA-N mebendazole Chemical compound [CH]1C2=NC(NC(=O)OC)=NC2=CC=C1C(=O)C1=CC=CC=C1 BAXLBXFAUKGCDY-UHFFFAOYSA-N 0.000 claims description 4
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- WTERNLDOAPYGJD-SFHVURJKSA-N monepantel Chemical compound C([C@@](C)(NC(=O)C=1C=CC(SC(F)(F)F)=CC=1)C#N)OC1=CC(C#N)=CC=C1C(F)(F)F WTERNLDOAPYGJD-SFHVURJKSA-N 0.000 claims description 4
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- 229960001920 niclosamide Drugs 0.000 claims description 4
- RJMUSRYZPJIFPJ-UHFFFAOYSA-N niclosamide Chemical compound OC1=CC=C(Cl)C=C1C(=O)NC1=CC=C([N+]([O-])=O)C=C1Cl RJMUSRYZPJIFPJ-UHFFFAOYSA-N 0.000 claims description 4
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- 229950007337 parbendazole Drugs 0.000 claims description 4
- QZWHWHNCPFEXLL-UHFFFAOYSA-N propan-2-yl n-[2-(1,3-thiazol-4-yl)-3h-benzimidazol-5-yl]carbamate Chemical compound N1C2=CC(NC(=O)OC(C)C)=CC=C2N=C1C1=CSC=N1 QZWHWHNCPFEXLL-UHFFFAOYSA-N 0.000 claims description 4
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- GOENIMGKWNZVDA-OAMCMWGQSA-N Spinetoram Chemical compound CO[C@@H]1[C@H](OCC)[C@@H](OC)[C@H](C)O[C@H]1OC1C[C@H]2[C@@H]3C=C4C(=O)[C@H](C)[C@@H](O[C@@H]5O[C@H](C)[C@H](CC5)N(C)C)CCC[C@H](CC)OC(=O)CC4[C@@H]3CC[C@@H]2C1 GOENIMGKWNZVDA-OAMCMWGQSA-N 0.000 claims 1
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- RRZXIRBKKLTSOM-XPNPUAGNSA-N avermectin B1a Chemical compound C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 RRZXIRBKKLTSOM-XPNPUAGNSA-N 0.000 claims 1
- PSOVNZZNOMJUBI-UHFFFAOYSA-N chlorantraniliprole Chemical compound CNC(=O)C1=CC(Cl)=CC(C)=C1NC(=O)C1=CC(Br)=NN1C1=NC=CC=C1Cl PSOVNZZNOMJUBI-UHFFFAOYSA-N 0.000 claims 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/12—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains three hetero rings
- C07D491/20—Spiro-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/10—Spiro-condensed systems
Definitions
- This invention relates to spirocyclic isoxazoline derivatives having parasiticidal activity.
- the compounds of interest are spirocyclic isoxazoline derivatives with an azetidine moiety.
- the invention also relates to processes of making said spirocyclic isoxazoline derivatives, compositions and methods of use thereof.
- ectoparasites such as insects (e.g., fleas, lice, and flies) and acarids (e.g., mites and ticks).
- insects e.g., fleas, lice, and flies
- acarids e.g., mites and ticks.
- Such products would be particularly useful for the treatment of animals including: birds (e.g., chickens and turkeys), fish, companion animals (e.g., cats, dogs, llamas, and horses), and livestock (e.g., cattle, bison, swine, sheep, deer, elk, and goats).
- livestock e.g., cattle, bison, swine, sheep, deer, elk, and goats.
- the compounds of the instant invention would also be particularly useful as an insecticide for plants.
- Isoxazoline derivatives have been disclosed in the art as having insecticidal and acaricidal activity.
- WO2007/105814, WO2008/122375, and WO2009/035004 recite certain alkylene linked amides.
- WO2010/032437 discloses that the benzyl amide can be moved to the position ortho to the isoxazoline.
- WO2007/075459 discloses phenyl isoxazolines substituted with 5- to 6-membered heterocycles
- WO2010/084067 and WO2010/025998 disclose phenyl isoxazolines substituted with 10- to 1 1- membered fused aryl and heteroaryls.
- the present invention overcomes one or more of the various aspects of the various aspects of the various aspects
- the present invention develops new spirocyclic isoxazoline substituted azetidine compounds which demonstrate such properties.
- the present invention provides Formula (1 ) compounds, stereoisomers thereof, veterinary or pharmaceutically acceptable salts thereof, which act as parasiticides, in particular, ectoparasiticides; therefore may be used to prevent, treat, repel, and control acarids and insect infection and infestation in animals.
- the invention contemplates the control and prevention of tick borne diseases, for example, Lyme disease, canine and bovine anaplasmosis, canine ehrlichiosis, canine rickettsiosis, canine and bovine babesiosis, epizootic bovine abortion, and theileriosis.
- tick borne diseases for example, Lyme disease, canine and bovine anaplasmosis, canine ehrlichiosis, canine rickettsiosis, canine and bovine babesiosis, epizootic bovine abortion, and theileriosis.
- W 1 , W 2 , and W 3 are each independently C or N;
- X is -S(0)p or O and W is CH 2 , or W is -S(0) p or O and X is CH 2 ; with the proviso that if W or X is O then one of W 1 , W 2 , and W 3 is N and if W 1 , W 2 , and W 3 are all C then one of X or W is -S(0) p ;
- R a , R b , and R c are each independently hydrogen, halo, cyano, hydroxyl, nitro, C Cealkyl, d-Cehaloalkyl, Ci-C 6 alkoxy, Co-C 3 alkylC 3 -C 6 cycloalkyl, Ci-C 6 haloalkoxy, -C(0)NH 2 , -SF 5 , or -S(0) p R;
- R 2 is halo, cyano, d-C 6 alkyl, Ci-C 6 haloalkyl, nitro, hydroxyl, -C(0)NR a R b ,
- R 3 is cyano, Ci-C 6 alkyl, Ci-C 6 haloalkyl, -C(0)NR a R b , C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 2 -Cehaloalkenyl, or C 2 -Cehaloalkynyl;
- R 4 is hydrogen, Ci-C 6 alkyl, Co-C 6 alkylC 3 -C 6 cycloalkyl, -C(0)R 5 , -C(S)R 5 , -C(0)NR a R 5 , -C(0)C(0)NR a R 5 , -S(0) p R c , -S(0) 2 NR a R 5 , -C(NR 6 )R 5 ,
- R 5 is hydrogen, C Cealkyl, C 2 -C 3 alkenyl, Co-C 6 alkylC 3 -C 6 cycloalkyl, Co-C 6 alkylphenyl, Co-C 6 alkylheteroaryl, or Co-C 6 alkylheterocycle;
- R 6 is hydrogen, CrCealkyl, hydroxyl, cyano, nitro, -S(0) p R c , or
- R is CrCealkyl or C 3 -Cecycloalkyl optionally substituted with at least one halo substituent
- R a is hydrogen, CrCealkyl, or Co-C 3 alkylC 3 -Cecycloalkyl; wherein the alkyl and alkylcycloalkyl is optionally substituted by cyano or at least one halo substituent;
- R b is hydrogen, CrCealkyl, C 3 -Cecycloalkyl, Co-C 3 alkylphenyl,
- R c is Ci-C 6 alkyl, Ci-C 6 haloalkyl, Ci-C 6 haloalkylC 3 -C 6 cycloalkyl,
- Co-C 3 alkylheterocycle each optionally substituted with at least one substituent selected from cyano, halo, hydroxyl, oxo, d-Cealkoxy, C-i-Cehaloalkoxy, Ci-C 6 haloalkyl, -S(0) p R, -SH, -S(0) p NR a R b , -NR a R b , -NR a C(0)R b , -SC(0)R, -SCN, or -C(0)NR a R b ;
- each of R 4 and R 5 Ci-C 6 alkyl or Co-C 6 alkylC 3 -C 6 cycloalkyl moiety can be optionally and independently substituted by at least one substituent selected from cyano, halo, hydroxyl, oxo, C-i-Cealkoxy, C-i-Cehaloalkoxy, C-i-Cehaloalkyl, Ci-C 6 alkyl, hydroxylCi-C 6 alkyl-, -S(0) p R c , -SH, -S(0) p NR a R b , -NR a R b ,
- Ci-C 6 alkoxy Ci-C 6 alkyl, hydroxylCi-C 6 alkyl-, Ci-C 6 haloalkyl, -SH, -S(0) p R, and Ci-Cehaloalkoxy;
- n is the integer 0, 1 , or 2, and when n is 2, each R 2 may be identical or different from each other; and
- p is the integer 0, 1 , or 2;
- R a , R b , R c , R 2 , R 3 , R 4 , X, W, and n are as defined above, stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- R a , R b , R c , R 2 , R 3 , R 4 , and n are as defined above, and X and W are each -S(0) p ,wherein p is as defined above, stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- R a , R b , R c , R 2 , R 3 , R 4 , and n are as defined above, and X and W are each O, stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- R a , R b , R c , R 2 , R 3 , R 4 , and n are as defined above, and X and W are each O, stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- R a , R b , R c , R 2 , R 3 , R 4 , and n are as defined above, and X and W are each O, stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- Formula (1 .3b) compounds selected from the group consisting of:
- Formula (1 .4b) compounds selected from the group consisting of:
- acyl groups e.g., formyl, acetyl, chloroacetyl, trichloro-acetyl, o- nitrophenylacetyl, o-nitrophenoxyacetyl, trifluoroacetyl, acetoacetyl, 4- chlorobutyryl, isobutyryl, o-nitrocinnamoyl, picolinoyl, acylisothiocyanate, aminocaproyl, benzoyl, and the like), acyloxy groups (e.g., methoxycarbonyl, 9- fluorenyl-methoxycarbonyl, 2,2,2-trifluoroethoxy-carbonyl, 2- trimethylsilylethxoycarbonyl, vinyloxycarbonyl, allyloxycarbonyl, 1 , 1 -di
- acyloxy groups e.g., formyl, acetyl, chloroacetyl, trichloro-acet
- Formula (1 .2b) compounds described in Table 2 stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- Formula (1 .4b) compounds described in Table 4 stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- each of R a , R b , and R c are independently selected from hydrogen, halo, cyano, C-1-C6 haloalkyl, and
- each of R a , R b , and R c are independently selected from hydrogen, halo, cyano, and C1-C6 haloalkyl.
- each of R a , R b , and R c are independently selected from hydrogen, fluoro, chloro, bromo, cyano, and C1-C6 haloalkyl.
- each of R a , R b , and R c are independently selected from hydrogen, fluoro, chloro, bromo, and C1-C6 haloalkyl.
- each of R a , R b , and R c are independently selected from hydrogen, fluoro, chloro, bromo, and -CF3. In another aspect of the invention, each of R a , R b , and R c are independently selected from chloro, fluoro, and hydrogen. In another aspect of the invention, each of R a , R b , and R c are chloro. In another aspect of the invention, each of R a and R c are chloro and R1 b is fluoro. In another aspect of the invention, each of R a and R c are chloro and R1 b is hydrogen.
- R 2 is halo, cyano, C-i-Cealkyl
- R 2 is halo, cyano, C-i-Cealkyl, d-Cehaloalkyl, or hydroxyl.
- R 2 is fluoro, chloro, bromo, cyano, methyl, ethyl, CF3, or hydroxyl.
- R 2 is fluoro, chloro, cyano, methyl, ethyl, or CF 3 .
- R 3 is cyano, C-i-Cealkyl
- R 3 is cyano, Ci-CealkyI, or Ci-CehaloalkyI. In yet another aspect of the invention, R 3 is cyano, methyl, ethyl, or Ci-CehaloalkyI. In yet another aspect of the invention, R 3 is cyano, methyl, or Ci-CehaloalkyI. In yet another aspect of the invention, R 3 is cyano or Ci-CehaloalkyI. In yet another aspect of the invention, R 3 is
- R 3 is -CF 3 , -CHF2, -CH2F, and -CF2CI. In yet another aspect of the invention, R 3 is -CF 3 , -CHF 2 , and -CH2F. In yet another aspect of the invention, R 3 is -CF 3 .
- R 4 is hydrogen, Ci-Cealkyl
- R 4 is hydrogen, Ci-Cealkyl, Co-CealkylCs-Cecycloalkyl, -C(0)R 5 , -C(S)R 5 , -C(0)NR a R 5 , -S(0) p R c , -S(0) 2 NR a R 5 , or -C(N R 6 )R 5 .
- R 4 is hydrogen, Ci-Cealkyl, Co-C6alkylC 3 -C6cycloalkyl, or -C(0)R 5 .
- R 4 is hydrogen, Ci-Cealkyl, or -C(0)R 5 . In yet another aspect of the invention, R 4 is hydrogen or -C(0)R 5 . In yet another aspect of the invention, R 4 is hydrogen. In yet another aspect of the invention, R 4 is -C(0)R 5 . R 4 can be optionally substituted as defined herein.
- R 5 is d-C 6 alkyl, Co-C 6 alkylphenyl, Co-C 6 alkylC 3 -C 6 cycloalkyl, Co-C 6 alkylheteroaryl, or Co-C 6 alkylheterocycle.
- R 5 is d-Cealkyl.
- R 5 is methyl, ethyl, propyl, isopropyl, t-butyl, isobutyl, and the like.
- Each of the R 5 d-Cealkyls can be optionally substituted as defined herein, for example, with at least one substituent selected from hydroxyl, halo,
- R 5 is Co-C 6 alkylC 3 -C 6 cycloalkyl.
- R 5 is cyclopropyl, cyclobutyl, cyclopentyl, -CH 2 cyclopropyl, -CH 2 cyclobutyl,
- R 5 Co-C 6 alkylC 3 -C 6 cycloalkyls can be optionally substituted as defined herein, for example, with at least one substituent selected from cyano, oxo, -S(0) p R c , hydroxyl, -CH 2 OH, halo, methyl, ethyl, and trifluoromethyl.
- R 5 is Co-C 6 alkylphenyl.
- R 5 is phenyl, -CH 2 phenyl, -(CH 2 ) 2 phenyl, and the like.
- the Co-C 6 alkylphenyl moieties can be optionally substituted as defined herein, for example, cyano, hydroxyl, -S(0) p R c , methyl, halo, and trifluoromethyl.
- R 5 is Co-C 6 alkylheteroaryl.
- R 5 is pyrazole, imidazole, pyridine, -CH 2 pyrazole, -CH 2 pyridine, -CH 2 imidazole, -(CH 2 ) 2 pyrazole, -(CH 2 ) 2 pyridine, and -(CH 2 ) 2 imidazole.
- Each of the R 5 Co-C 6 alkylheteroaryl moieties can be optionally substituted as defined herein, for example, with at least one
- R 5 is
- R 5 is oxirane, thiarane, aziridine, oxetane, azetidine, thiatane, tetrahydrofuran,
- tetrahydrothiophene pyrrolidine, tetrahydropyrane, piperidine, piperazine, -CH 2 oxirane, -CH 2 thiarane, -CH 2 aziridine, -CH 2 oxetane, -CH 2 azetidine,
- R 5 Co-C 6 alkylheterocyclic moieties can be optionally substituted as defined herein, for example, with at least one substituent selected from cyano, hydroxyl, -S(0) p R c , methyl, halo, and trifluoromethyl.
- the integer n of (R 2 ) n is 0. In another aspect of the invention, the integer n of (R 2 ) n is 1 . When the integer n is 1 , then R 2 is as defined herein. In yet another aspect of the invention, the integer n of (R 2 ) n is 2. When the integer n is 2, then each R 2 is independent of each other and are as described herein.
- p is the integer 0. In yet another aspect of the invention, p is the integer 1. In yet another aspect of the invention, p is the integer 2.
- a veterinary composition that comprises a Formula (1 ) compound, stereoisomers thereof, or a veterinary or pharmaceutical acceptable salt thereof.
- the composition comprises a therapeutically effective amount of a Formula (1 ) compound, stereoisomer thereof, or veterinary or pharmaceutical acceptable salt thereof.
- the composition comprising a Formula (1 ) compound, stereoisomer thereof, an pharmaceutically or veterinary or pharmaceutical acceptable salt thereof further comprises at least one veterinary or
- the composition may comprise at least one additional veterinary agent.
- additional veterinary agents include endoparasiticides, endectocides, ectoparasiticides, insecticides, and anthelmintics, and are described herein.
- the additional veterinary agent is selected from amitraz, amino acetonitriles (e.g., monepantel, those disclosed in
- anthelmintics e.g., albendazole, cambendazole, fenbendazole, flubendazole, mebendazole, octadepsipeptides, oxfendazole, oxibendazole, paraherquamides (e.g., derquantel), parbendazole, piperazines, praziquantel, thiabendazole, tetramisole, triclabendazole, levamisole, pyrantel pamoate, oxantel, morantel, and the like), avermectins (e.g., abamectin, doramectin, emamectin, ep nomectin, ivermectin, moxidectin, selamectin, and the like), milbemycin, milbemycin oxime, demiditraz
- the additional agent is selected from an amino acetonitrile, albendazole, cambendazole, fenbendazole, flubendazole, mebendazole, oxfendazole, oxibendazole, paraherquamide, parbendazole, praziquantel, thiabendazole, tetramisole, triclabendazole, levamisole, pyrantel pamoate, oxantel, morantel, abamectin, doramectin, emamectin, eprinomectin, ivermectin, moxidectin, selamectin, milbemycin, milbemycin oxime, demiditraz, diethylcarbamazine, fipronil, hydro
- the additional agent is selected from an amino acetonitrile (e.g., monepantel), paraherquamide, praziquantel, abamectin, doramectin, emamectin, eprinomectin, ivermectin, moxidectin, selamectin, milbemycin, and milbemycin oxime.
- an amino acetonitrile e.g., monepantel
- paraherquamide praziquantel
- abamectin doramectin
- emamectin eprinomectin
- ivermectin ivermectin
- selamectin moxidectin
- milbemycin milbemycin oxime.
- the additional agent is selected from abamectin, doramectin, emamectin, eprinomectin, ivermectin, moxidectin, selamectin, milbemycin, and milbemycin oxime. In yet another aspect of the invention, the additional agent is selected from abamectin, doramectin, eprinomectin, ivermectin, moxidectin, selamectin, milbemycin, and milbemycin oxime. In yet another aspect of the invention, the additional agent is selected from moxidectin, selamectin, and milbemycin oxime. In yet another aspect of the invention, the additional agent is selected from moxidectin and milbemycin oxime.
- the animal is a mammal, specifically a companion animal (for example, dog, cat, or horse) or livestock (for example, sheep, goat, cattle, and pig).
- livestock for example, sheep, goat, cattle, and pig.
- the animal is a bird, specifically, fowl (for example, chicken, turkey, duck, and geese).
- the animal is a fish.
- the compounds of the present invention, and compositions thereof can be administered to the animal orally or topically.
- the compounds of the present invention, and compositions thereof can also be administered to the animal by intramuscular-, intraperitoneal-, or subcutaneous-injection.
- the compounds of the present invention, and compositions thereof can be administered to the animal orally or topically.
- the compounds of the present invention can be administered by injection.
- Compounds of the present invention alone, or in combination with an additional veterinary agent(s) may be administered as (a) a single veterinary composition which comprises a compound of the present invention, stereoisomer thereof, veterinary or pharmaceutical acceptable salt thereof, and optionally, at least one additional veterinary agent as described herein and at least one veterinary or pharmaceutical acceptable carrier; or (b) two separate veterinary compositions comprising (i) a first composition comprising a compound of the present invention, stereoisomer thereof, veterinary or pharmaceutical acceptable salt thereof, and at least one veterinary or pharmaceutical acceptable carrier, and (ii) a second composition comprising at least one additional veterinary agent, as described herein and at least one veterinary or pharmaceutical acceptable carrier.
- the veterinary compositions may be administered
- Additional veterinary agent(s) refers to other veterinary or pharmaceutical compounds or products that provide a therapeutically effective amount of said agents that are useful for the treatment of a parasitic infection in an animal, as described herein.
- Alkoxy refers to an oxygen moiety having a further alkyl substituent.
- the alkyl portion (i.e., alkyl moiety) of an alkoxy group has the same definition as below. Non-limiting examples include:
- Alkyl refers to saturated monovalent hydrocarbon alkane radicals of the general formula C n H2n+i -
- the alkane radical may be straight or branched and may be unsubstituted or substituted.
- (Ci-C6)alkyl refers to a monovalent, straight or branched aliphatic group containing 1 to 6 carbon atoms.
- Non-exclusive examples of (C-i-Ce) alkyl groups include, but are not limited to methyl, ethyl, propyl, isopropyl, sec-butyl, t-butyl, n-propyl, n-butyl, i-butyl, s-butyl, n-pentyl,
- alkyl moiety may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- Alkyl groups are optionally substituted as described herein. Further when used in compound words such as alkylphenyl, said alkyl moiety has the same meaning as herein defined and may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- alkylphenyl include: C-ialkylphenyl is -CH 2 phenyl, C ⁇ alkylphenyl is
- Cophenyl is phenyl, and the like.
- alkenyl include: ethenyl, 1 -propenyl, 2- propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 2-pentenyl, and the like.
- Alkynyl refers to straight or branched aliphatic hydrocarbon chain having 2- to 6-carbon atoms and containing at least one carbon-carbon triple bond (for example, -C ⁇ C- or
- alkynyl include: ethynyl, 2-propynyl, 1 - methyl-2-propynyl, 2-butynyl, 3-butynyl, 2-methyl-3-butynyl, and the like.
- Animal(s) refers to an individual animal that is a mammal, bird, or fish. Specifically, mammal refers to a vertebrate animal that is human and non-human, which are members of the taxonomic class Mammalia.
- Non-exclusive examples of non-human mammals include companion animals and livestock.
- Non-exclusive examples of a companion animal include: dog, cat, llama, and horse.
- Preferred companion animals are dog, cat, and horse. More preferred is dog.
- Non-exclusive examples of livestock include: swine, camel, rabbits, goat, sheep, deer, elk, bovine (cattle), and bison.
- Preferred livestock is cattle and swine.
- bird refers to a vertebrate animal of the taxonomic class Aves. Birds are feathered, winged, bipedal, endothermic, and egg-laying.
- Non-exclusive examples of bird include, poultry (e.g., chicken, turkey, duck, and geese), all of which are also referred to herein as fowl.
- fish refers to the taxonomic class Chondrichthyes (cartilaginous fishes, e.g., sharks and rays) and Osteichthyes (bony fishes) which live in water, have gills or mucus-covered skin for respiration, fins, and may have scales.
- Non-exclusive examples of fish include shark, salmon, trout, whitefish, catfish, tilapia, sea bass, tuna, halibut, turbot, flounder, sole, striped bass, eel, yellowtail, grouper, and the like.
- Carbocyclic refers to a partially saturated or saturated 5- to 7-membered ring containing only carbon atoms and can be monocyclic or part of a fused ring or spiro ring moiety.
- carbocyclic rings examples include cyclopentane, cyclohexane, and cycloheptane.
- Chiral refers to the structural characteristic of a molecule that makes it impossible to superimpose it on its mirror image, (e.g., "R” and “S” enantiomers).
- the term is also depicted as an asterisk (i.e.,*) in the Examples and preparations and refers to a chiral center which includes both the S and R enantiomers.
- Compounds of the present invention refers to Formula (1 ) compounds, and stereoisomers thereof, and veterinary or pharmaceutical acceptable salts thereof.
- Cycloalkyl as used herein, unless otherwise indicated, includes fully saturated or partially saturated carbocyclic alkyl moieties.
- Non-limiting examples of partially saturated cycloalkyls include: cyclopropene, cyclobutene,
- cycloheptene cyclooctene
- cyclohepta-1 ,3-diene and the like.
- Preferred cycloalkyls are 3- to 6-membered saturated monocyclic rings including cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl.
- the cycloalkyl group may be attached to the chemical moiety by any one of the carbon atoms within the ring.
- Cycloalkyl groups are optionally substituted with at least one substituent.
- alkyl and cycloalkyl moiety has the same meaning as herein defined and may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- Examples of Co-C 6 alkylC 3 -C 6 cycloalkyl include, methylcyclopropane
- CoalkylC 3 -C 6 cycloalkyl is C 3 -C 6 cycloalkyl.
- Halogen or "halo”, as used herein, unless otherwise indicated, refers to fluorine, chlorine, bromine and iodine. Further, when used in compound words such as “haloalkyl”, “haloalkoxy”, “haloalkenyl”, or “haloalkynyl”, said alkyl, alkoxy, alkenyl, and alkynyl may be partially or fully substituted with halogen atoms which may be the same or different and said alkyl, alkoxy, alkenyl, and alkynyl moiety has the same meaning as above and may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- haloalkyl examples include F 3 C-, CICH 2 -, CF 3 CH 2 - and CF 3 CCI 2 -, and the like.
- haloalkoxy is defined analogously to the term “haloalkyl”.
- haloalkoxy examples include CF 3 0-, CCI 3 CH 2 0-, HCF 2 CH 2 CH 2 0- and CF 3 CH 2 0-, and the like.
- haloalkenyl is defined analogously to the term “haloalkyl” except that the aliphatic chain contains at least one carbon- carbon double bond.
- haloalkynyl is defined analogously to the term “haloalkyl” except that the aliphatic chain contains at least one carbon-carbon triple bond. Examples of “haloalkynyl” include
- FsCCEC- FsCCEC-, CI 3 CC ⁇ C-, HF 2 CC ⁇ C-, and the like.
- Heteroaryl or “Het”, as used herein, unless otherwise indicated, refers to a 5- to 6-membered aromatic monocyclic ring or an 8- to 10-membered fused aromatic ring where said monocyclic- and fused-ring moiety contains one or more heteroatoms each independently selected from N, O, or S, preferably from one to four heteroatoms.
- Non-exclusive examples of monocyclic heteroaryls include pyrrolyl, furanyl, thiophenyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, thiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, thiadiazolyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, and the like.
- fused heteroaryls include: benzofuranyl, benzothiophenyl, indolyl, benzimidazolyl, indazolyl, benzotriazolyl, thieno[2,3-c]pyridine, thieno[3,2-b]pyridine,
- heteroaryl group may be attached to the chemical moiety by any one of the carbon atoms or nitrogen heteroatoms within the monocyclic or fused ring.
- said alkyl and heteroaryl moiety have the same meaning as herein defined and may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- C 0 alkylheteroaryl is heteroaryl
- dalkylheteroaryl is -Ch ⁇ heteroaryl
- C 2 alkyl heteroaryl is
- heteroaryl -CH 2 CH 2 heteroaryl, and the like.
- Heteroaryls are optionally substituted as described herein.
- Heterocycle refers to a partially saturated or saturated 3- to 7-membered monocyclic ring containing one or more heteroatoms each independently selected from N, O, or S, preferably from one to four heteroatoms.
- the heterocyclic ring can be part of a fused ring or spiro-ring moiety.
- Non-exclusive examples of heterocycle include oxirane, thiarane, aziridine, oxetane, azetidine, thiatane, tetrahydrofuran,
- heterocycle group may be attached to the chemical moiety by any one of the carbon atoms or nitrogen heteroatoms within the ring. Further when used in compound words such as alkylheterocycle, said alkyl and heterocycle moiety have the same meaning as herein defined and may be attached to the chemical moiety by any one of the carbon atoms of the aliphatic chain.
- Coalkylheterocycle is heterocycle
- C-ialkylheterocycle is
- C ⁇ alkyl heterocycle is -Ch ⁇ Ch ⁇ heterocycle, and the like.
- Heterocycles are optionally substituted as described herein.
- Optionally substituted is used herein interchangeably with the phrase substituted or unsubstituted. Unless otherwise indicated, an optionally substituted group may have a substituent at each substitutable position of the group, and each substitution is independent of the other. An optionally substituted group also may have no substituents. Therefore, the phrase
- Parasite(s) refers to endoparasites and ectoparasites.
- Endoparasites are parasites that live within the body of its host and include helminths (e.g., trematodes, cestodes, and nematodes) and protozoa.
- Ectoparasites are organisms of the Arthropoda phylum (e.g., arachnids, insects, and crustaceans (e.g., copepods-sea lice) which feed through or upon the skin of its host.
- Preferred arachnids are of the order Acarina, e.g., ticks and mites.
- Preferred insects are midges, fleas, mosquitos, biting flies (stable fly, horn fly, blow fly, horse fly, and the like), bed bugs, and lice.
- Preferred compounds of the present invention can be used for the treatment of parasites, i.e., treatment of a parasitic infection or infestation.
- Protecting group refers to a substituent that is commonly employed to block or protect an amine on the compound thereby protecting its functionality while allowing for the reaction of other functional groups on the compound.
- Non-exclusive examples of an amine-protecting group include: acyl groups (e.g., formyl, acetyl, chloroacetyl, trichloro-acetyl, o-nitrophenylacetyl, o-nitrophenoxyacetyl, trifluoroacetyl, acetoacetyl, 4-chlorobutyryl, isobutyryl, o-nitrocinnamoyl, picolinoyl, acylisothiocyanate, aminocaproyl, benzoyl, and the like), acyloxy groups (e.g., 1-ferf-butyloxycarbonyl (Boc), methoxycarbonyl, 9-fluorenyl- methoxycarbonyl
- Sulfonate leaving group refers to anions with the general formula RSO 2 O " .
- “Therapeutically effective amount” refers to an amount of the compounds of the present invention that (i) treat the particular parasitic infection or infestation, (ii) attenuates, ameliorates, or eliminates one or more symptoms of the particular parasitic infection or infestation, or (iii) prevents or delays the onset of one or more symptoms of the particular parasitic infection or infestation described herein.
- Treatment refers to reversing, alleviating, or inhibiting the parasitic infection, infestation, or condition.
- these terms also encompass, depending on the condition of the animal, preventing the onset of a disorder or condition, or of symptoms associated with a disorder or condition, including reducing the severity of a disorder or condition or symptoms associated therewith prior to affliction with said infection or infestation.
- treatment can refer to administration of the compounds of the present invention to an animal that is not at the time of administration afflicted with the infection or infestation. Treating also encompasses preventing the recurrence of an infection or infestation or of symptoms associated therewith as well as references to "control” (e.g., kill, repel, expel, incapacitate, deter, eliminate, alleviate, minimize, and eradicate).
- Veterinary or pharmaceutical acceptable indicates that the substance or composition must be compatible chemically and/or toxicologically, with the other ingredients comprising a formulation, composition, and/or the animal being treated therewith.
- pharmaceutically acceptable has the same meaning as that recited for "veterinary” acceptable.
- the present invention provides Formula (1 ) compounds, stereoisomers thereof, as well as veterinary compositions that are useful as antiparasitic agents for animals, in particular, compounds that act as ectoparasiticides.
- Compounds of the present invention may be synthesized by synthetic routes that include processes analogous to those well known in the chemical arts, particularly in light of the description contained herein.
- the starting materials are generally available from commercial sources such as Aldrich Chemicals (Milwaukee, Wis.) or are readily prepared using methods well known to those skilled in the art (e.g., prepared by methods generally described in Louis F. Fieser and Mary Fieser, "Reagents for Organic Synthesis", 1 ; 19, Wiley, New York (1967, 1999 ed.), or Beilsteins Handbuch der orqanischen Chemie, 4, Aufl. ed. Springer-Verlag, Berlin, including supplements (also available via the
- Enantiomeric mixtures can be separated into their individual enantiomers on the basis of their physical chemical differences by methods well known to those skilled in the art, such as chromatography and/or fractional crystallization. A more detailed description of techniques that can be used to resolve
- Compounds of this invention can exist as one or more stereoisomers.
- the various stereoisomers include enantiomers, diastereomers and atropisomers.
- one stereoisomer may be more active and/or may exhibit beneficial effects when enriched relative to the other stereoisomer(s) or when separated from the other stereoisomer(s). Additionally, the skilled artisan knows how to separate, enrich, and/or to selectively prepare said stereoisomers.
- the compounds of the invention may be present as a mixture of stereoisomers, individual stereo isomers or as an optically active form.
- Formula 1 a two possible enantiomers of Formula 1 are depicted as Formula 1 a and Formula lb involving the spirocyclic isoxazoline chiral center identified with an asterisk (*).
- Molecular depictions drawn herein follow standard conventions for depicting stereochemistry.
- protecting group refers to a substituent that is commonly employed to block or protect a particular functionality while reacting other functional groups on the compound.
- an amine-protecting group is a substituent attached to an amine that blocks or protects the amine-functionality of the compound or intermediate.
- Suitable amine protecting groups include: 1 -ferf-butyloxycarbonyl (Boc), acyl groups including: formyl, acetyl, chloroacetyl, trichloro-acetyl, o- nitrophenylacetyl, o-nitrophenoxyacetyl, trifluoroacetyl, acetoacetyl, 4- chlorobutyryl, isobutyryl, o-nitrocinnamoyl, picolinoyl, acylisothiocyanate, aminocaproyl, benzoyl, and the like; and acyloxy groups including:
- miscellaneous abbreviations include: mobile phase (MP); N,N-dimethyl formamide (DMF); dimethyl acetamide (DMA); acetonitrile (ACN or Acn); formic acid (FA); dichloromethane (DCM); N-chloro-succinimide (NCS); ethanol (EtOH); methyl tert-butyl ether (MTBE); triethylamine (TEA or Et 3 N ); methanol (MeOH), tetrahydrofuran (THF); ethyl acetate (EtOAc); trifluoroacetic acid (TFA);
- triphenylphosphine palladium Pd(PPh 3 )
- (2,2,6,6-tetramethylpiperidin-1 -yl)oxyl TEMPO
- diisobutylaluminium hydride DIBAL-H
- 4-dimethylaminopyridine DMAP
- potassium bis(trimethylsilyl) KHMDS
- N-chlorosuccinimide NSS
- 1 ,3- bis(diphenylphosphino)propane DPPP
- amidecarbonyldiimidazole CDI
- 1- hydroxybenzotriazole hydrate HABt
- HATU N,N,N',N'-Tetramethyl-0-(7- azabenzotriazol-1 -yl)uronium hexafluorophosphate
- HATU N,N,N',N'-Tetramethyl-0-(7- azabenzotriazol-1 -yl)uronium hexafluor
- the chiral versions of the spiro-pyridines described herein can be prepared as shown in Scheme 6. Palladium mediated coupling of the halopyridine with a vinyl ether yields ketone intermediates. Condensation of the methyl ketone intermediates with a substituted trifluoroacetophenone provides a chalcone. Addition of hydroxylamine to the chalcone and cyclization in the presence of a quinine based chiral catalyst provides the protected chiral spiropyridine. Deprotection under acidic conditions, such as methanolic HCI or trifluoroacetic acid, provides the chiral spiro-pyridine.
- Reaction of the benzylic chloride 20 with t-BuSH using a suitable base provides sulfide intermediate 21.
- Metal-halogen exchange of the iodine with BuLi oriPrMgCI.LiCI followed by addition of 19 yields alcohol intermediate 22.
- Acid mediated cyclization provides thiospiroethers 23.
- Palladium mediated coupling with a vinyl ether provides ketone intermediates 24.
- Condensation of 24 with trifluoroacetophenone of Formula 14 provides compounds of Formula 25.
- the present invention includes all veterinary or pharmaceutical acceptable isotopically-labelled Formula (1 ) compounds wherein one or more atoms are replaced by atoms having the same atomic number, but an atomic mass or mass number different from the atomic mass or mass number usually found in nature.
- isotopes suitable for inclusion in the compounds of the present invention include isotopes of hydrogen, such as 2 H and 3 H, carbon, such as C, 3 C and 4 C, chlorine, such as 36 CI, fluorine, such as 8 F, iodine, such as 2 3 l and 25 l, nitrogen, such as 3 N and 5 N, oxygen, such as 5 0, 7 0 and 8 0, and sulphur, such as 35 S.
- the Formula (1 ) compounds are useful as antiparasitic agents, therefore, another embodiment of the present invention is a veterinary composition comprising a therapeutically effective amount of a Formula (1 ) compound, stereoisomer thereof, and at least one veterinary or pharmaceutical acceptable carrier.
- the compounds of the present invention (including the compositions and processes used therein) may also be used in the manufacture of a medicament for the therapeutic applications described herein.
- the compound of the present invention can be administered alone or in a formulation appropriate to the specific use envisaged, the particular species of host animal being treated and the parasite involved. Generally, it will be administered as a formulation in association with at least one veterinary or pharmaceutical acceptable carrier.
- carrier is used herein to describe any ingredient (e.g., excipient, diluents, and the like) other than the compound of the present invention or any additional veterinary (e.g., antiparasitic) agent.
- the choice of carrier will to a large extent depend on factors such as the particular mode of administration, the effect of the carrier on solubility and stability, and the nature of the dosage form.
- the amount of the compound of the present invention that is administered and the dosage regimen for treating a condition or disorder with the compound depends on a variety of factors, including the age, weight, sex and medical condition of the animal, the severity of the disease, the route and frequency of administration, and thus may vary widely.
- the pharmaceutical composition comprises a Formula (1 ) compound with at least one veterinary or pharmaceutical acceptable carrier.
- concentration range will vary depending on the composition (e.g., oral, topical, or injectable).
- the range of active i.e., compound of the present invention
- the range of active is about 0.1 to 50 mg/kg, preferably from about 0.5 to 25 mg/kg, and even more preferably from about 0.5 to 10mg/kg, and most preferably from about 1 to 5 mg/kg.
- the range of active is about 0.1 to 1000 mg/mL, and preferably from about 0.5 to 500 mg/mL, and more preferably from about 1 to 250 mg/mL, and even more preferably from about 2 to 200 mg/mL.
- the concentration of the active can change from that described above.
- injectable doses tend to be, but not always, lower in concentration.
- the formulations can be prepared using conventional dissolution and mixing procedures. Such compositions and methods for their preparation may be found, for example, in 'Remington's Veterinary Sciences', 19th Edition (Mack Publishing Company, 1995; and "Veterinary Dosage Forms: Tablets, Vol. 1 ", by H. Lieberman and L. Lachman, Marcel Dekker, N.Y., 1980 (ISBN 0-8247-6918- X).
- a typical formulation is prepared by mixing a Formula (1 ) compound with at least one veterinary or pharmaceutical acceptable carrier. Suitable carriers are well known to those skilled in the art and include materials such as carbohydrates, waxes, water soluble and/or swellable polymers, hydrophilic or hydrophobic materials, gelatin, oils, solvents, water, and the like.
- the particular carrier(s) will depend upon the means and purpose for which the compound of the present invention is being applied. Solvents are generally selected based on solvents recognized by persons skilled in the art as safe to be administered to an animal.
- the formulations may also include one or more buffers, stabilizing agents, surfactants, wetting agents, lubricating agents, emulsifiers, suspending agents, preservatives, antioxidants, opaquing agents, glidants, processing aids, colorants, sweeteners, perfuming agents, flavoring agents and other known additives to provide an elegant presentation of the drug (i.e., a compound of the present invention or veterinary composition thereof) or aid in the manufacturing of the veterinary product (i.e., medicament).
- the compound of the present invention will typically be formulated into veterinary dosage forms to provide an easily controllable dosage form for administration.
- the methods by which the compound of the present invention may be administered include oral, topical, and injectable (e.g., parenteral and
- the compound of the present invention can be administered orally by capsule, bolus, tablet, powders, lozenges, chews, multi and nanoparticulates, gels, solid solution, films, sprays, or liquid form. This is a preferred method of administration and as such it is desirable to develop the compound for oral administration.
- Such formulations may be employed as fillers in soft or hard capsules, soft or hard palatable chews, which typically comprise at least one veterinary or pharmaceutical acceptable carrier, for example, water, ethanol, polyethylene glycol, N-methylpyrrolidone, propylene glycol, methylcellulose, or a suitable oil, and one or more emulsifying agents, flavorants, and/or suspending agents.
- Liquid forms include suspensions, solutions, syrups, drenches and elixirs. Liquid formulations may also be prepared by the reconstitution of a solid, for example, from a sachet. Oral drenches are commonly prepared by dissolving or suspending the compound of the present invention in a suitable medium (e.g. triethylene glycol, benzyl alcohol, and the like).
- a suitable medium e.g. triethylene glycol, benzyl alcohol, and the like.
- the compound of the present invention can also be formulated with a food substance, e.g., a dietary admixture (food pellets or powder for birds).
- the compound of the present invention can be administered topically to the skin or mucosa, that is dermally or transdermally. This is another preferred method of administration and as such it is desirable to develop the compound of the present invention to be suited to such formulations, for example liquid forms.
- Typical formulations for this purpose include pour-on, spot-on, multi-spot-on, stripe-on, comb-on, roll-on, dip, spray, mousse, shampoo, powder formulation, gels, hydrogels, lotions, solutions, creams, ointments, dusting powders, dressings, foams, films, skin patches, wafers, implants, sponges, fibers, bandages and micro emulsions. Liposomes may also be used.
- Typical carriers include alcohol, water, mineral oil, liquid petrolatum, white petrolatum, glycerin, N-methyl formamide, glycol monomethyl ethers, polyethylene glycol, propylene glycol, and the like.
- Penetration enhancers may be incorporated - see, for example, J Pharm Sci, 88 (10), 955-958 by Finnin and Morgan (October 1999).
- Pour-on or spot-on formulations may be prepared by dissolving the active ingredients in an acceptable liquid carrier such as butyl digol, liquid paraffin or a non-volatile ester, optionally with the addition of a volatile component such as propan-2-ol or a glycol ether.
- pour-on, spot-on or spray may be prepared by dissolving the active ingredients in an acceptable liquid carrier such as butyl digol, liquid paraffin or a non-volatile ester, optionally with the addition of a volatile component such as propan-2-ol or a glycol ether.
- Topical formulations contemplated herein can comprise from about 0.1 mg/kg to 50 mg/kg of a compound of the present invention, and more preferably from about 1 mg/kg to 10 mg/kg of a compound of the present invention, and even more preferably, from 1 mg/kg to 5 mg/kg.
- the compounds of the present invention can also be administered topically via a support matrix for example, a synthetic or natural resin, plastic, cloth, leather, or other such polymeric system in the shape of a collar or ear tag.
- Said collar or ear tag may be coated, impregnated, layered, by any means so as to provide a veterinary or pharmaceutical acceptable amount of a compound of the present invention alone, or with at least one veterinary or pharmaceutical acceptable carrier, and optionally an additional veterinary agent, or veterinary or pharmaceutical acceptable salt thereof.
- Such formulations are prepared in a conventional manner in accordance with standard medicinal or veterinary practice.
- the volume of the applied composition can be from about 0.2 mL/kg to 5 mL/kg and preferably from about 1 mL/kg to 3mL/kg.
- Agents may be added to the formulations of the present invention to improve the persistence of such formulations on the surface of the animal to which they are applied, for example to improve their persistence on the coat of the animal. It is particularly preferred to include such agents in a formulation which is to be applied as a pour-on or spot-on formulation.
- examples of such agents include acrylic copolymers and in particular fluorinated acrylic
- copolymers are particularly suitable reagents.
- a particular suitable reagent is the trademark reagent "Foraperle” (Redline Products Inc, Texas, USA).
- Certain topical formulations may include unpalatable additives to minimize oral exposure.
- Injectable (e.g., subcutaneous and parenteral) formulations may be prepared in the form of a sterile solution, which may contain other substances, for example enough salts or glucose to make the solution isotonic with blood.
- Acceptable liquid carriers include vegetable oils such as sesame oil, glycerides such as triacetin, esters such as benzyl benzoate, isopropyl myristate and fatty acid derivatives of propylene glycol, as well as organic solvents such as pyrrolidin-2-one and glycerol formal.
- the formulations are prepared by dissolving or suspending compounds of the present invention alone or with at least one additional veterinary agent in the liquid carrier such that the final formulation contains from about 0.01 to 30% by weight of the active ingredients.
- Suitable devices for injectable administration include needle (including micro needle) injectors, needle-free injectors and infusion techniques.
- Injectable formulations are typically aqueous solutions which may contain excipients such as salts, carbohydrates and buffering agents (preferably to a pH of from 3 to 9), but, for some applications, they may be more suitably formulated as a sterile non-aqueous solution or as a dry powder form to be used in conjunction with a suitable vehicle such as sterile, pyrogen-free water.
- a suitable vehicle such as sterile, pyrogen-free water.
- the preparation of injectable formulations under sterile conditions for example, by lyophilisation, may readily be accomplished using standard veterinary techniques well known to those skilled in the art.
- the solubility of a compound of the present invention used in the preparation of an injectable solution may be increased by the use of appropriate formulation techniques, such as the incorporation of solubility- enhancing agents.
- Administration of the compound of the instant invention is contemplated to be once a month. However, an extended duration formulation may allow for dosing once every 2, 3, 4, 5, or 6 months. A once a year dose is also
- Such formulations are prepared in a conventional manner in accordance with standard medicinal or veterinary practice. Further, these formulations will vary with regard to the weight of active compound contained therein, depending on the species of host animal to be treated, the severity and type of infection or infestation, and the body weight of the animal.
- composition of the present invention may be administered alone, as described above, or in combination with at least one other additional antiparasitic agent to form a multi-component parasiticide giving an even broader spectrum of pharmaceutical and/or veterinary utility.
- the present invention also envisions a combination veterinary composition comprising an effective amount of the compound of the present invention in combination with at least one other additional antiparasitic agent and can further comprise at least one veterinary or pharmaceutical acceptable carrier.
- additional veterinary agents together with which the compound of the present invention can be used is intended to illustrate the possible combinations, but not to impose any limitation.
- additional veterinary agents include: amitraz, arylpyrazoles, amino
- anthelmintics e.g., albendazole, cambendazole, dichlorvos, fenbendazole, flubendazole, levamisole, mebendazole, monepantel, morantel, octadepsipeptides, oxantel, oxfendazole, oxibendazole, paraherquamide, parbendazole, piperazines, praziquantel, pyrantel, thiabendazole, tetramisole, triclabendazole, and the like), avermectins and derivatives thereof (e.g., abamectin, doramectin, emamectin, ep nomectin, ivermectin, moxidectin, selamectin, milbemycin, milbemycin oxime, and the like), DEET, demiditraz, diethyl
- combinations of a compound of the present invention with at least one additional veterinary agent can result in a greater-than-additive effect.
- Non-limiting examples of combinations include, but are not limited to: compound of the present invention with pyrantel, compound of the present invention with macrocyclic lactone, combination of the present invention with macrocyclic lactone and levamisole, compound of the present invention with macrocyclic lactone and pyrantel.
- the veterinary composition for application to an animal may be packaged in a variety of ways depending upon the method used for administering the compound of the present invention or combination, thereof.
- an article for distribution includes a container having deposited therein the veterinary composition in an appropriate form.
- Suitable containers are well-known to those skilled in the art and include materials such as bottles (plastic and glass), sachets, ampoules, plastic bags, metal cylinders, and the like.
- the container may also include a tamper-proof assemblage to prevent indiscreet access to the contents of the package.
- the container has deposited thereon a label that describes the contents of the container. The label may also include appropriate warnings.
- the compounds of the present invention may also be used in the manufacture of a medicament for the therapeutic applications described herein.
- the compounds of the present invention, stereoisomers thereof, and compositions comprising a therapeutically effective amount of a Formula (1 ) compound and at least one veterinary or pharmaceutical acceptable carrier are useful as ectoparasiticides for the control and treatment of infections or infestations manifested by said ectoparasite in an animal.
- the compounds of the present invention have utility as an ectoparasiticide, in particular, as an acaricide and insecticide. They may, in particular, be used in the fields of veterinary medicine, livestock husbandry and the maintenance of public health: against acarids, insects, and copepods which are parasitic upon vertebrates, particularly warm-blooded vertebrates, including companion animals, livestock, and fowl and cold-blooded vertebrates like fish.
- ectoparasites include: ticks (e.g., Ixodes spp., (e.g., I. ricinus, I. hexagonus), Rhipicephalus spp., (e.g., R. sanguineus), Boophilus spp., Amblyomma spp. (e.g., A. maculatum, A. triste, A. parvum, A. cajennense, A. ovale, A.
- ticks e.g., Ixodes spp., (e.g., I. ricinus, I. hexagonus), Rhipicephalus spp., (e.g., R. sanguineus), Boophilus spp., Amblyomma spp. (e.g., A. maculatum, A. triste, A. parvum, A. cajennense, A. ovale, A.
- Haemaphysalis spp. Dermacentor spp. (e.g., D. variabilis, D. andersoni, D. marginatus), Ornithodorus spp., and the like); mites (e.g., Dermanyssus spp., Sarcoptes spp., (e.g., S. scabiei), Psoroptes spp., (e.g., P/bovis), Otodectes spp., Chorioptes spp., Demodex spp., (e.g., D. folliculorum, D. can is, and D.
- mites e.g., Dermanyssus spp., Sarcoptes spp., (e.g., S. scabiei), Psoroptes spp., (e.g., P/bovis), Otodectes spp., Chorioptes
- Haematobia spp. Musca spp., Stomoxys spp., Dematobia spp., Cochliomyia spp., Simuliidae spp., Ceratopogonidae spp., Psychodidae spp., Aedes spp., Culex spp., Anopheles spp., and the like); bed bugs (e.g., insects within the genus Cimex and family Cimicidae); and grubs (e.g.,Hypoderma bovis,
- copepods e.g., sea lice within the Order Siphonostomatoida, including genera Lepeophtheirus and Caligus.
- the compound of the present invention can also be used for the treatment of endoparasites, for example, heartworms, roundworms, hookworms, whipworms, and tapeworms.
- the gastrointestinal roundworms include, for example, Ostertagia ostertagi (including inhibited larvae), O. lyrata, Haemonchus placet, H. similis, H. contort us, Toxocara can is, T.leonina, T. cati,
- Trichostrongylus axei T. colubriformis, T. longispicularis, Cooperia oncophora, C. pectinata, C. punctata, C. surnabada (syn. mcmasteri ), C. spatula, Ascaris suum, Hyostrongylus rubidus, Bunostomum phlebotomum, Capillaria bovis, B. trigonocephalum, Strongyloides papillosus, S. ransomi, Oesophagostomum radiatum, O. dentatum, O. columbianum, O. quadrispinulatum, Trichuris spp., and the like.
- Other parasites include: hookworms (e.g., Ancylostoma caninum, A.tubaeforme, A.braziliense, Uncinaria stenocephala); lungworms (e.g.,
- Dictyocaulus viviparus and Metastrongylus spp include eyeworms (e.g., Thelazia spp.); parasitic stage grubs (e.g., Hypoderma bovis, H. lineatum, Dermatobia hominis); kidneyworms (e.g., Stephanurus dentatus); screw worm (e.g., Cochliomyia hominivorax (larvae); filarial nematodes of the super-family Filarioidea and the Onchocercidae Family.
- Non-limiting examples of filarial nematodes within the Onchocercidae Family include the genus Brugia spp. (i.e., B.malayi, B. pahangi, B. timori, and the like), Wuchereria spp. (i.e., W. bancrofti, and the like),
- Dirofilaria spp. (D. immitis, D. repens, D. ursi, D. tenuis, D.spectans, D. lutrae, and the like), Dipetalonema spp. (i.e., D reconditum, D. repens, and the like), Onchocerca spp. (i.e., O. gibsoni, O. gutturosa, O. volvulus, and the like), Elaeophora spp. (E.bohmi, E. elaphi, E. poeli, E. sagitta, E. schneideri, and the like), Mansonella spp. (i.e., M.
- the compound of the present invention is useful for treating endoparasiticidal infection from filarial nematodes within the genus Dirofilaria (i.e., D .immitis, D. repens, D. ursi, D. tenuis, and the like).
- the compounds of the present invention and compositions comprising compounds of the present invention in conjunction with at least one other veterinary agent are of particular value in the control of ectoparasites, endoparasites, and insects which are injurious to, or spread or act as vectors of diseases in companion animals, livestock, birds, and fish.
- the ectoparasites, insects, and endoparasites which can be treated with a combination of a
- Formula (1 ) compound and an additional veterinary agent include those as herein before described and including helminthes of the phylum platyhelminthes (e.g., trematodes, eucestoda, and cestoda), and nemathelminthes (e.g., nematodes).
- helminthes of the phylum platyhelminthes e.g., trematodes, eucestoda, and cestoda
- nemathelminthes e.g., nematodes
- Any of the compounds of the present invention, or a suitable combination of a compound of the present invention and optionally, with at least one additional veterinary agent may be administered directly to the animal and/or indirectly by applying it to the local environment in which the animal dwells (such as bedding, enclosures, and the like).
- Direct administration includes contacting the skin, fur, or feathers of a subject animal with the compound(s), or by feeding or injecting the compounds into the animal.
- the Formula (1 ) compound, stereoisomers thereof, and combinations with at least one additional veterinary agent, as described herein, are of value for the treatment and control of the various lifecycle stages of insects and parasites including egg, nymph, larvae, juvenile and adult stages.
- the present invention also relates to a method of administering a compound of the present invention alone or in combination with at least one additional veterinary agent, and optionally at least one veterinary or
- pharmaceutical acceptable carrier to animals in good health comprising the application to said animal to reduce or eliminate the potential for human parasitic infection or infestation from parasities carried by the animal and to improve the environment in which the animals inhabit.
- reaction flasks were fitted with rubber septa for the introduction of substrates and reagents via syringe.
- Glassware was oven dried and/or heat dried.
- Analytical thin layer chromatography (TLC) was performed using glass-backed silica gel 60 F 254 precoated plates and eluted with appropriate solvent ratios (v/v). Reactions were assayed by TLC or LCMS and terminated as judged by the consumption of starting material. Visualization of the TLC plates was done with UV light (254 nM wavelength) or with an appropriate TLC visualizing solvent and activated with heat.
- Flash column chromatography (Still et al., J. Org. Chem. 43, 2923, (1978) was performed using silica gel (RediSep Rf) or various MPLC systems, such as Biotage or ISCO purification system.
- reaction mixture was quenched with water (200ml_) and extracted with ethyl acetate (3 x 200ml_). Organic layer was washed with aqueous sodium bicarbonate (2 x 300ml_), brine (300ml_) and dried over sodium sulfate. Organic layer was concentrated under reduced pressure to afford brown oil (35.5g, crude). Crude was purified by column chromatography using silica gel (100-200 mesh). Desired compound was eluted at 5% EtOAc in hexane to get title compound as brown oil (22.5g, 94.78%).
- reaction mixture was cooled to room temperature and filtered through celite bed over Buchner funnel, celite bed was washed with DCM (2 x 300ml_). Combined filtrate was washed with water (300ml_) and aqueous sodium bicarbonate (120ml_), dried over sodium sulfate and concentrated under reduced pressure to afford off white solid (15.3g, crude). Crude compound was purified by washing with n-pentane (2 x 150ml_) to get desired compound as white solid (9.5g, impure). Impure title compound was used as such for the next reaction.
- reaction mixture was cooled to 0°C and quenched with 10% citric acid solution (20ml_), diluted with water (150ml_) and extracted with ethyl acetate (3 x 100ml_). Combined organic phase was washed with brine solution (100ml_), dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get yellowish sticky mass (18.2g, crude). Crude compound was purified by column chromatography by using silica gel (100-200 mesh). Desired compound was eluted by 35% ethyl acetate in hexane to afford title compound as pale yellow thick oil (4.9g, 45%).
- Step 5 tert-butyl-3'-bromo-1 H,5'H-spiro[azetidine-3,7'-furo[3,4,b] pyridine]-1 - carboxylate (Intermediate 1 ).
- reaction mixture was quenched with saturated Na 2 C0 3 solution (20ml_), diluted with water (20ml_) and extracted with ethyl acetate (2 x 100ml_). Combined organic phase was washed with brine solution (100ml_), dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get brown sticky mass (13.4g, crude). Crude compound was purified by column chromatography by using silica gel (100-200 mesh). Desired compound was eluted at 10% ethyl acetate in hexane to afford title compound as white solid (4.5g, 53%).
- Example 1 3'-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3- yl]-1 -[(methylsulfonyl)acetyl]-5'H-spiro[azetidin-3,7'-furo[3,4,b]pyridine]
- Step 1 tert-butyl-3'-formyl-1 H,5'H-spiro[azetidine-3,7'-furo[3,4,b] pyridine]-1 - carboxylate
- reaction mixture was stirred at -20°C for 3 hours under nitrogen atmosphere. After complete consumption of starting material, reaction mixture was quenched with 10% NH CI solution (10ml_), diluted with water (50ml_) and extracted with ethyl acetate (2 x 50m L). Combined organic phase was washed with brine
- reaction mixture was evaporated in vacuo to afford brown colored thick oil, which was diluted by water (70ml_). Aqueous was extracted with ethyl acetate (3 x 50ml_). Combined organic phase was washed with brine (50ml_), dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get title compound as brown thick oil (1 .6g, crude). Crude compound was used as such for next reaction.
- reaction mixture was evaporated in vacuo to afford brown thick oil, which was striped with chloroform (2 x 50ml_) and triturated with chloroform: hexane (1 :10) to get title compound is off white solid as TFA salt (1 .4g, crude). Crude was used as such for next reaction.
- reaction mixture was stirred at room temperature for 16 hours under nitrogen atmosphere. After complete consumption of starting material, reaction mixture was quenched by water (30ml_), extracted with ethyl acetate (3 x 30ml_). Combined organic phase was washed with saturated LiCI solution (30ml_), brine (30ml_), dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get brown sticky mass (0.5g, crude). Crude compound was purified by column chromatography using silica gel (100 - 200 mesh). Desired compound was eluted at 1 % methanohDCM to get faint brown colored thick oil, which was triturated with pentane (20ml_), diethyl ether (20ml_) to get faint brown colored solid.
- This compound was prepared similarly to Example 1 , except that
- This compound was prepared similarly to Example 1 except that 1 ,2,3- trichloro-5-(1 -trifluoromethyl-vinyl)-benzene was used in place of 1 ,3-dichloro-5- (l -trifluoromethyl-vinyl)-benzene. Yield 88mg (16%).
- Example 6 1 -isobutyryl-3'-[5-(3,4,5-trichlorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl]-5'H-spiro[azetidin-3,7'-furo[3,4,b]pyridine]
- reaction mixture was cooled to 0°C and quenched by aqueous sodium bicarbonate (25ml_), extracted with DCM
- reaction mixture was stirred at room temperature for 16 hours under nitrogen atmosphere. After maximum consumption of starting material, reaction mixture was cooled to 0°C, quenched with 10% citric acid solution (20ml_) and extracted with ethyl acetate (3x100 ml_). Combined organic phase was dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get brown oil (4.5g, crude). Crude of title compound was used as such for next reaction. LC-MS (m/z): 332.9 (M+H).
- reaction mixture was stirred at room temperature for 16 hours under nitrogen atmosphere. After complete consumption of starting material, reaction mixture was filtered through celite bed over Buchner funnel, celite bed was washed with THF:methanol (100ml_ each). Combined filtrate was concentrated under reduced pressure to get brown oil (crude). Crude compound was purified by column chromatography by using silica gel (100 - 200 mesh). Desired compound was eluted at 18% ethyl acetate in hexane to afford title compound as off white solid (0.9 g, 22%).
- Example 7 1 -(2'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -yl)-2-(methyl sulf onyl) ethanone
- Step 1 1 -tert-butyl 2'-ethyl-7'H-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 ,2'- dicarboxylate
- reaction mixture was heated at 80°C under 225 psi pressure of CO gas for 12 hours. After complete consumption of starting material, reaction mixture was filtered through celite bed; celite bed was washed with ethanol (3x50ml_). Combined filtrate was concentrated under reduced pressure to afford brown oil (2.5g, crude). Crude compound was purified by coloumn chromatography in 100-200 mesh silica gel, title compound was eluted in 35% ethyl acetate in hexanes to afford title compound as yellow semisolid (1 .8g, 80%).
- reaction mixture was quenched by methanol (1 .5ml_) followed by addition of saturated solution of sodium potassium tartarate salt (10ml_) at -78°C and extracted with DCM (3x75ml_). Combined organic layer was dried over sodium sulphate, concentrated under reduced pressure to afford the tilte compound as brown solid (0.25g, crude). Crude compound was used as such for the next reaction.
- Step 4 tert-butyl 2'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -carboxylate
- reaction mixture was stirred at 45°C for 1 hour.
- 1 ,3-dichloro-2- fluoro-5-(1 -trifluoromethyl-vinyl)-benzene (0.530g, 2.046mmol, 1 .2eq) was added followed by addition of KHCO3 (0.255g, 2.557mmol, 1 .5eq).
- KHCO3 0.255g, 2.557mmol, 1 .5eq
- Step 6. 1 -(2'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -yl)-2- (methylsulfonyl)ethanone (Example 7)
- Example 8 1 -(2'-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol- 3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -yl)-2-(methylsulfonyl)ethanone
- This compound was prepared similarly to Example 7 except that 1 ,3- dichloro-5-(1 -trifluoromethyl-vinyl)-benzene was used in place of 1 ,3-dichloro-2- fluoro-5-(1 -trifluoromethyl-vinyl)-benzene to afford title compound as pale yellow solid (42 mg, 12%).
- This compound was prepared similarly to Example 7 except that 1 ,2,3- trichloro-5-(1 -trifluoromethyl-vinyl)-benzene was used in place of 1 ,3-dichloro-2- fluoro-5-(1 -trifluoromethyl-vinyl)-benzene to afford title compound as pale yellow solid (52mg, 15%).
- Example 10 1 -(2'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -yl)-2- methylpropan-1 -one
- Example 1 1 . 1 -(2'-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-7'/-/-spiro[azetidine-3,5'-furo[3,4-b]pyridine]-1 -yl)-2- methylpropan-1 -one
- reaction mixture was cooled to 0°C, quenched with 10% citric acid solution (20ml_) and extracted with ethyl acetate (3x50ml_). Combined organic phase was dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get brown oil (2.2g, crude). Crude compound was purified by column chromatography by using silica gel (100-200 mesh). Desired compound was eluted at 20% ethyl acetate in hexane to afford title compound as yellow solid (0.45 g, 19%).
- reaction mixture was quenched with saturated NaHC0 3 solution (10ml_), diluted with water (20ml_) and extracted with ethyl acetate (2x50 ml_). Combined organic phase was dried over anhydrous Na 2 S0 4 and concentrated under reduced pressure to get brown sticky mass (0.4g, crude). Crude compound was purified by preparative TLC in 40% ethyl acetate in hexane to afford title compound as off white solid (0.18g, 42%).
- reaction mixture was heated at 80°C under 225 psi of CO gas for 12 hours. After complete consumption of starting material, reaction mixture was filtered through celite bed; celite bed was washed with ethanol (3x1 OmL).
- reaction mixture was quenched by methanol (0.2ml_) followed by addition of saturated solution of sodium potasium tartarate salt (0.5ml_) at -78°C and extracted with DCM (3x25ml_). Combined organic layer was dried over sodium sulphate, concentrated under reduced pressure to afford the title compound as brown solid (0.15 g, crude). Crude compound was used as such for the next reaction.
- reaction mixture was concentrated under reduced pressure to afford brownish semisolid, which was stripped out by chloroform (3x15ml_) to afford title compound as brown solid (0.1 1 g, crude). Crude TFA salt was used as such for next reaction. LC-MS (m/z): 462.1 (M+H).
- Step 6 1 -(6'-(5-(3,5-dichloro-4-fluorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-1 '/-/-spiro[azetidine-3,3'-furo[3,4-c]pyridine]-1 -yl)-2- (methylsulfonyl)ethanone (Example 13)
- Desired compound was eluted in 50% ethyl acetate in hexanes to afford light brown solid (0.07g), which was recrystallised by chloroform(0.5ml_) in hexanes(3.0ml_) to afford title compound as off white solid (32 mg, 23%).
- This compound was prepared similary to Example 13 except that 1 ,2,3- trichloro-5-(1 -trifluoromethyl-vinyl) was used in place of 1 ,3-dichloro-2-fluoro-5- (l -trifluoromethyl-vinyl)-benzene to afford title compound as off-white solid (17 mg, 9%).
- Example 15 1 -(6'-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroiso xazol-3-yl)-1 '/-/-spiro[azetidine-3,3'-furo[3,4-c]pyridine]-1-yl)-2- (methylsulfonyl)ethanone
- Example 18 1 -(6'-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5- dihydroisoxazol-3-yl)-1 'H-spiro[azetidine-3,3'-furo[3,4-c]pyridine]-1 -yl)-2- methylpropan-1 -one
- the biological activity of the compounds of the present invention can be tested against hard tick larvae, soft ticks, fleas, and horn flies using the test methods described below.
- MEC Concentration
- Examples 4, 5, 6, 16, 1 7, and 18 had an LD 00 of 0.03 ⁇ g/mL; Examples 1 , 10, and 13 had an LD 1UU value of 0.1 g/mL; Examples 2, 3, 1 1 , 12, and 14 had an LD 00 of 0.3 g/mL; and Examples 7, 8, 9, and 15 had an LD 00 of >3 g/mL.
- MEC Concentration
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Priority Applications (7)
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AU2013312891A AU2013312891A1 (en) | 2012-09-07 | 2013-09-04 | Spirocyclic isoxazolines as antiparasitic agents |
BR112015004695A BR112015004695A2 (en) | 2012-09-07 | 2013-09-04 | spirocyclic isoxazolines as antiparasitic agents |
EP13762669.3A EP2892901A1 (en) | 2012-09-07 | 2013-09-04 | Spirocyclic isoxazolines as antiparasitic agents |
CA2882546A CA2882546A1 (en) | 2012-09-07 | 2013-09-04 | Spirocyclic isoxazolines as antiparasitic agents |
US14/423,951 US9131697B2 (en) | 2012-09-07 | 2013-09-04 | Spirocyclic isoxazolines as antiparasitic agents |
CN201380046559.1A CN104603140A (en) | 2012-09-07 | 2013-09-04 | Spirocyclic isoxazolines as antiparasitic agents |
HK15111289.0A HK1210473A1 (en) | 2012-09-07 | 2015-11-16 | Spirocyclic isoxazolines as antiparasitic agents |
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US201261698004P | 2012-09-07 | 2012-09-07 | |
US61/698,004 | 2012-09-07 |
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EP (1) | EP2892901A1 (en) |
CN (1) | CN104603140A (en) |
AU (1) | AU2013312891A1 (en) |
BR (1) | BR112015004695A2 (en) |
CA (1) | CA2882546A1 (en) |
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Cited By (13)
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US9221835B2 (en) * | 2012-09-07 | 2015-12-29 | Zoetis Services Llc | Spirocyclic derivatives as antiparasitic agents |
WO2016115315A1 (en) * | 2015-01-16 | 2016-07-21 | Avista Pharma Solutions | Antiparasitic compounds |
WO2016138339A1 (en) | 2015-02-26 | 2016-09-01 | Merial, Inc. | Long-acting injectable formulations comprising an isoxazoline active agent, methods and uses thereof |
WO2016164487A1 (en) | 2015-04-08 | 2016-10-13 | Merial, Inc. | Extended release injectable formulations comprising an isoxazoline active agent, methods and uses thereof |
WO2017147352A1 (en) | 2016-02-24 | 2017-08-31 | Merial, Inc. | Antiparasitic isoxazoline compounds, long-acting injectable formulations comprising them, methods and uses thereof |
WO2017153218A1 (en) * | 2016-03-11 | 2017-09-14 | Basf Se | Method for controlling pests of plants |
WO2017153217A1 (en) | 2016-03-09 | 2017-09-14 | Basf Se | Spirocyclic derivatives |
WO2018039508A1 (en) | 2016-08-25 | 2018-03-01 | Merial, Inc. | Method for reducing unwanted effects in parasiticidal treatments |
WO2018071535A1 (en) | 2016-10-14 | 2018-04-19 | Merial, Inc. | Pesticidal and parasiticidal vinyl isoxazoline compounds |
WO2019036407A1 (en) | 2017-08-14 | 2019-02-21 | Merial, Inc. | Pesticidal and parasiticidal pyrazole-isoxazoline compounds |
CN111253331A (en) * | 2020-03-17 | 2020-06-09 | 南京林业大学 | Novel method for synthesizing spiroisoxazoline by using dihydrochalcone as raw material |
WO2021242481A1 (en) | 2020-05-28 | 2021-12-02 | Boehringer Ingelheim Animal Health USA Inc. | Bi-modal release intra-ruminal capsule device and methods of use thereof |
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US20160081986A1 (en) * | 2013-05-20 | 2016-03-24 | Zoetis Services Llc | Long-acting spiro-isoxazoline antiparasitic compositions |
US10556909B2 (en) | 2016-05-20 | 2020-02-11 | Avista Pharma Solutions, Inc. | Synthetic process and intermediates |
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BRPI0707091B8 (en) * | 2006-03-10 | 2018-02-14 | Nissan Chemical Ind Ltd | isoxaline and substituted benzaldoxime compound or a salt thereof; pesticide, agrochemical, endo- or ectoparasiticide for mammals or birds, insecticide and acaricide containing as one or more active ingredients selected from the substituted isoxaline compound and the salt thereof |
WO2010084067A2 (en) * | 2009-01-22 | 2010-07-29 | Syngenta Participations Ag | Insecticidal compounds |
-
2013
- 2013-09-04 CA CA2882546A patent/CA2882546A1/en not_active Abandoned
- 2013-09-04 AU AU2013312891A patent/AU2013312891A1/en not_active Abandoned
- 2013-09-04 BR BR112015004695A patent/BR112015004695A2/en not_active IP Right Cessation
- 2013-09-04 US US14/423,951 patent/US9131697B2/en not_active Expired - Fee Related
- 2013-09-04 EP EP13762669.3A patent/EP2892901A1/en not_active Withdrawn
- 2013-09-04 CN CN201380046559.1A patent/CN104603140A/en active Pending
- 2013-09-04 WO PCT/US2013/057935 patent/WO2014039484A1/en active Application Filing
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WO2012017359A1 (en) * | 2010-08-05 | 2012-02-09 | Pfizer Inc. | Isoxazoline derivatives as antiparasitic agents |
WO2012120399A1 (en) * | 2011-03-10 | 2012-09-13 | Pfizer Inc. | Spirocyclic isoxazoline derivatives as antiparasitic agents |
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US9131697B2 (en) | 2015-09-15 |
US20150181882A1 (en) | 2015-07-02 |
HK1210473A1 (en) | 2016-04-22 |
CN104603140A (en) | 2015-05-06 |
CA2882546A1 (en) | 2014-03-13 |
BR112015004695A2 (en) | 2017-07-04 |
AU2013312891A1 (en) | 2015-02-26 |
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