TWI753009B - 2-(6-硝基吡啶-3-基)-9H-二吡啶并[2,3-b;3',4'-d]吡咯之製備方法 - Google Patents
2-(6-硝基吡啶-3-基)-9H-二吡啶并[2,3-b;3',4'-d]吡咯之製備方法 Download PDFInfo
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- TWI753009B TWI753009B TW106130720A TW106130720A TWI753009B TW I753009 B TWI753009 B TW I753009B TW 106130720 A TW106130720 A TW 106130720A TW 106130720 A TW106130720 A TW 106130720A TW I753009 B TWI753009 B TW I753009B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- FRCQINQYHQKRNK-UHFFFAOYSA-N 11-(6-nitropyridin-3-yl)-4,8,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3,5,10,12-hexaene Chemical compound [O-][N+](=O)C1=NC=C(C=C1)C1=CC=C2C(NC3=C2C=NC=C3)=N1 FRCQINQYHQKRNK-UHFFFAOYSA-N 0.000 title description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 38
- 239000002253 acid Substances 0.000 claims abstract description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 229910052786 argon Inorganic materials 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 150000007524 organic acids Chemical class 0.000 claims abstract description 5
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical group CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 4
- PBIMIGNDTBRRPI-UHFFFAOYSA-N trifluoro borate Chemical compound FOB(OF)OF PBIMIGNDTBRRPI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000005490 tosylate group Chemical group 0.000 claims abstract 2
- 125000002827 triflate group Chemical group FC(S(=O)(=O)O*)(F)F 0.000 claims abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 47
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 14
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 7
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 6
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 6
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical group [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 6
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 6
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 claims description 5
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 claims description 4
- BMIBJCFFZPYJHF-UHFFFAOYSA-N 2-methoxy-5-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine Chemical compound COC1=NC=C(C)C=C1B1OC(C)(C)C(C)(C)O1 BMIBJCFFZPYJHF-UHFFFAOYSA-N 0.000 claims description 4
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 235000013985 cinnamic acid Nutrition 0.000 claims description 4
- 229930016911 cinnamic acid Natural products 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 235000011167 hydrochloric acid Nutrition 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- 235000003270 potassium fluoride Nutrition 0.000 claims description 3
- 239000011698 potassium fluoride Substances 0.000 claims description 3
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- 239000002798 polar solvent Substances 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims 2
- PXACTUVBBMDKRW-UHFFFAOYSA-N 4-bromobenzenesulfonic acid Chemical group OS(=O)(=O)C1=CC=C(Br)C=C1 PXACTUVBBMDKRW-UHFFFAOYSA-N 0.000 claims 1
- HWTDMFJYBAURQR-UHFFFAOYSA-N 80-82-0 Chemical group OS(=O)(=O)C1=CC=CC=C1[N+]([O-])=O HWTDMFJYBAURQR-UHFFFAOYSA-N 0.000 claims 1
- UUUPZNQILQTICJ-UHFFFAOYSA-N ClC1=C(C=2C(C3=CC=CC(=C3OC=2C(=C1)P(C1=CC=CC=C1)C1=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1)(C)C)Cl Chemical group ClC1=C(C=2C(C3=CC=CC(=C3OC=2C(=C1)P(C1=CC=CC=C1)C1=CC=CC=C1)P(C1=CC=CC=C1)C1=CC=CC=C1)(C)C)Cl UUUPZNQILQTICJ-UHFFFAOYSA-N 0.000 claims 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical group OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims 1
- 235000017557 sodium bicarbonate Nutrition 0.000 claims 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims 1
- -1 boronic acid ester Chemical class 0.000 abstract description 10
- PXACTUVBBMDKRW-UHFFFAOYSA-M 4-bromobenzenesulfonate Chemical group [O-]S(=O)(=O)C1=CC=C(Br)C=C1 PXACTUVBBMDKRW-UHFFFAOYSA-M 0.000 abstract 1
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical group [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 abstract 1
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 abstract 1
- 125000005492 nosylate group Chemical group 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 42
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 239000002585 base Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 239000011541 reaction mixture Substances 0.000 description 8
- 238000004128 high performance liquid chromatography Methods 0.000 description 7
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000543 intermediate Substances 0.000 description 6
- 239000007858 starting material Substances 0.000 description 6
- 238000006277 sulfonation reaction Methods 0.000 description 6
- NQHRUTKNRVYHGR-UHFFFAOYSA-N 4,8,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3,5,12-pentaen-11-one Chemical class OC1=NC2=C(C=C1)C1=C(N2)C=CN=C1 NQHRUTKNRVYHGR-UHFFFAOYSA-N 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 5
- 238000004895 liquid chromatography mass spectrometry Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 235000011181 potassium carbonates Nutrition 0.000 description 5
- HEYONDYPXIUDCK-UHFFFAOYSA-L (5-diphenylphosphanyl-9,9-dimethylxanthen-4-yl)-diphenylphosphane;palladium(2+);dichloride Chemical compound Cl[Pd]Cl.C=12OC3=C(P(C=4C=CC=CC=4)C=4C=CC=CC=4)C=CC=C3C(C)(C)C2=CC=CC=1P(C=1C=CC=CC=1)C1=CC=CC=C1 HEYONDYPXIUDCK-UHFFFAOYSA-L 0.000 description 4
- 229920001410 Microfiber Polymers 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 125000003963 dichloro group Chemical group Cl* 0.000 description 4
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- 238000010992 reflux Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- DIOHEXPTUTVCNX-UHFFFAOYSA-N 1,1,1-trifluoro-n-phenyl-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)N(S(=O)(=O)C(F)(F)F)C1=CC=CC=C1 DIOHEXPTUTVCNX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-diisopropylethylamine Substances CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 3
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 3
- 229910000024 caesium carbonate Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 125000003170 phenylsulfonyl group Chemical group C1(=CC=CC=C1)S(=O)(=O)* 0.000 description 3
- 235000011118 potassium hydroxide Nutrition 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- WBQWOKAPVJYVSS-UHFFFAOYSA-N N-(3-chloropyridin-4-yl)-6-methoxypyridin-2-amine Chemical compound ClC=1C=NC=CC=1NC1=NC(=CC=C1)OC WBQWOKAPVJYVSS-UHFFFAOYSA-N 0.000 description 2
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
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- 238000004587 chromatography analysis Methods 0.000 description 2
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- YMWUJEATGCHHMB-UHFFFAOYSA-N dichloromethane Natural products ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- 238000003384 imaging method Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 2
- CYPYTURSJDMMMP-WVCUSYJESA-N (1e,4e)-1,5-diphenylpenta-1,4-dien-3-one;palladium Chemical compound [Pd].[Pd].C=1C=CC=CC=1\C=C\C(=O)\C=C\C1=CC=CC=C1.C=1C=CC=CC=1\C=C\C(=O)\C=C\C1=CC=CC=C1.C=1C=CC=CC=1\C=C\C(=O)\C=C\C1=CC=CC=C1 CYPYTURSJDMMMP-WVCUSYJESA-N 0.000 description 1
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- IBXMKLPFLZYRQZ-UHFFFAOYSA-N 1,5-diphenylpenta-1,4-dien-3-one;palladium Chemical compound [Pd].[Pd].C=1C=CC=CC=1C=CC(=O)C=CC1=CC=CC=C1 IBXMKLPFLZYRQZ-UHFFFAOYSA-N 0.000 description 1
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- NXQGGXCHGDYOHB-UHFFFAOYSA-L cyclopenta-1,4-dien-1-yl(diphenyl)phosphane;dichloropalladium;iron(2+) Chemical compound [Fe+2].Cl[Pd]Cl.[CH-]1C=CC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1.[CH-]1C=CC(P(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 NXQGGXCHGDYOHB-UHFFFAOYSA-L 0.000 description 1
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000004170 methylsulfonyl group Chemical group [H]C([H])([H])S(*)(=O)=O 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- LXNAVEXFUKBNMK-UHFFFAOYSA-N palladium(II) acetate Substances [Pd].CC(O)=O.CC(O)=O LXNAVEXFUKBNMK-UHFFFAOYSA-N 0.000 description 1
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004237 preparative chromatography Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- GVKLJBRCNUBOJT-UHFFFAOYSA-N pyrrol-2-one hydrobromide Chemical compound C1=CC(=O)N=C1.Br GVKLJBRCNUBOJT-UHFFFAOYSA-N 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- IHDUNYPPHYFNGR-UHFFFAOYSA-N tert-butyl 11-chloro-4,8,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2(7),3,5,10,12-hexaene-8-carboxylate Chemical compound CC(C)(C)OC(=O)n1c2ccncc2c2ccc(Cl)nc12 IHDUNYPPHYFNGR-UHFFFAOYSA-N 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/12—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
- C07D471/14—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/13—Crystalline forms, e.g. polymorphs
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
[18
F]-2-(6-氟-吡啶-3-基)-9H-二吡啶并[2,3-b;3',4'-d]吡咯、其製備方法及其在tau聚集物及相關β-褶疊聚集物(包括除此以外之其他β-類澱粉聚集物)或α-突觸核蛋白聚集物之結合及成像中的用途、尤其針對其在阿茲海默氏(Alzheimer’s)患者中之tau聚集物之結合及成像中之用途闡述於WO2015/052105中。 在WO2015/052105中,使用2-(6-硝基吡啶-3-基)-9H-二吡啶并[2,3-b;3',4'-d]吡咯作為相應PET示蹤劑之前體。其係自2-氯-二吡啶并[2,3-b;3',4'-d]吡咯-9-甲酸第三丁基酯與2-硝基吡啶-5-酸頻哪醇酯與1,1'-雙(二苯基膦基)二茂鐵-二氯化鈀(II)二氯甲烷複合物及K2
CO3
之組合在DMF中製備。 WO2015/052105中所述之此方法係自昂貴起始材料開始但導致可變產率之極欠缺的獲得途徑。此外,需要Boc-保護基團以有利於最終偶合,但此產生若干產物之混合物。期望之高度不溶性產物必須藉由冗長之製備型層析及重結晶來純化,此導致物質顯著損失。 因此,需要發現安全且可靠之自容易獲得之起始材料開始之方法,其以可重現產率及高純度產生式I
化合物。
新方法可如下闡述: 可藉由下述方法製備本發明式I
化合物, 該等方法包含 a) 使式2
化合物,其中磺醯基(SO2
-R)選自三氟甲磺醯基(Tf)、甲苯磺醯基(Ts)、甲磺醯基(Ms)、苯磺醯基、硝基苯磺醯基(Ns)或對溴苯磺醯基(Bs)舉例而言,三氟甲烷磺酸9H-吡咯并[2,3-b:4,5-c']二吡啶-2-基酯, 與適宜酸、三氟硼酸酯或酸酯(例如2-硝基吡啶-5-酸頻哪醇酯)在氬條件下在催化量之適宜過渡金屬複合物(例如鈀複合物,例如PdCl2
(xantphos)或Pd2
(dba)3
)、適宜鹼(例如氟化鉀)及極性溶劑(例如THF、2-Me-THF或二噁烷)存在下偶合,及藉由用任何適宜酸(例如乙酸、三氟乙酸、肉桂酸、草酸、酒石酸、鹽酸、氫溴酸、硫酸或磷酸)處理將產物分離為酸加成鹽, 以得到式Ia
化合物及 b) 將所得式Ia
之酸加成鹽其中酸HX包含任何適宜有機或無機酸,例如乙酸、三氟乙酸、肉桂酸、草酸、酒石酸、鹽酸、氫溴酸、硫酸、磷酸及諸如此類,轉化成式I
化合物其係藉由用至少化學計量當量之適宜鹼(例如氫氧化鈉或氫氧化鉀、三甲胺、碳酸鉀、碳酸氫鈉、氨、三乙胺及諸如此類)處理來實現。 終產物[18
F]-2-(6-氟-吡啶-3-基)-9H-二吡啶并[2,3-b;3',4'-d]吡咯可隨後如WO2015/052105中所述藉由以下方式來獲得: 將式I
化合物溶解於二甲亞碸中並將其用[18
F]氟化物/K[2,2,2]/K2
CO3
處理。
以下方案1更詳細闡述式I
化合物之製備方法。起始材料係已知化合物或可根據業內已知之方法製備。 本發明式I
化合物之製備可以依序或彙聚式合成途徑來實施。實施反應及純化所得產物所需要之技術為彼等熟習此項技術者已知。除非指示相反情況,否則在下文方法之說明中所用取代基及指標具有上文中所給意義。 更詳細地,式I
化合物可藉由下文給出之方法、藉由實例中給出之方法或藉由類似方法來製造。個別反應步驟之適當反應條件已為熟習此項技術者所知。反應順序並不限於方案1中所展示者,然而,端視起始材料及其各別反應性,可自由改變反應步驟之順序。起始材料有市售或可藉由類似於下文所給方法之方法、藉由說明書或實例中引用之參考文獻中所述之方法或藉由業內已知之方法來製備。縮寫
Tf = 三氟甲磺醯基,- SO2
CF3
Ts = 甲苯磺醯基,-SO2
C6
H4
CH3
Ms = 甲磺醯基,-SO2
CH3
苯磺醯基 = -SO2
C6
H5
Ns = 硝基苯磺醯基,-SO2
C6
H4
-o-NO2
Bs = 對溴苯磺醯基,-SO2
C6
H4
-p-Br PdCl2
(xantphos) = 二氯[9,9-二甲基-4,5-雙(二苯基膦基)𠮿]鈀(II) Pd2
dba3
= 參(二亞苄基丙酮)二鈀(0)方案 1 根據方案1,式I
化合物可自2-鹵基-6-甲氧基吡啶4
(X = Cl、Br)及3-鹵基-吡啶-4-胺5
(X = Cl、Br)開始製備。於環境或升高溫度使用觸媒系統(例如PdCl2
(xantphos))及鹼(例如碳酸銫)在適宜溶劑(例如THF、2-Me-THF或1,4-二噁烷)中之過渡金屬催化之交叉偶合反應產生聯吡啶胺6
(X = Cl、Br)。分子內環化可於環境或升高溫度使用觸媒系統(例如Pd(OAc)2
及四氟硼酸三第三丁基鏻)及鹼(例如碳酸鉀)在適宜溶劑(例如DMF或DMA)中實施以得到1,6-二氮雜咔唑中間體7
。可藉由於環境或升高溫度用強酸(例如氫溴酸)在溶劑(例如乙酸)中處理而達成甲氧基之裂解,產生1,6-二氮雜咔唑啉-2-酮中間體8
,分離呈例如氫溴酸鹽。可藉由介於0℃與50℃之間之溫度用活化試劑(例如N,N-雙(三氟甲基-磺醯基)苯胺(對於SO2
-R = Tf))在鹼(例如N,N-二異丙基乙胺)存在下在適宜溶劑(例如DMF)中處理中間體8
將1,6-二氮雜咔唑啉-2-酮中間體8
轉化成活化2-羥基-1,6-二氮雜咔唑2
(其中SO2
-R係例如Tf、Ts、Ms、苯磺醯基、Ns、Bs)。可藉由於環境或升高溫度使用適宜酸、三氟硼酸酯或酸酯(例如2-硝基吡啶-5-酸頻哪醇酯)、觸媒系統(例如PdCl2
(xantphos))及鹼(例如氟化鉀)在適宜溶劑(例如THF、2-Me-THF或1,4-二噁烷)中直接過渡金屬催化之交叉偶合反應來最終轉變成式I
化合物。用酸(例如乙酸)處理使得產物可分離呈鹽,例如乙酸鹽Ia
。用鹼(例如三乙胺)在溶劑(例如甲醇或DMSO)中處理最終將式I
化合物釋放為游離鹼。可使用其他鹼,例如氫氧化鈉或氫氧化鉀、三甲胺、碳酸鉀、碳酸氫鈉、氨及諸如此類。 上述6步合成途徑係基於容易獲得之起始材料及試劑。其可實施而無需任何層析純化,此對於方案1中所述之中間體及最終產物之溶解性較差之化合物係重要的優點。式I
化合物係以>10%總分離產率獲得,其相當於每一反應步驟約70%分離產率。參照下文製備及實例可獲知其他詳情。化合物之分離及純化
若期望,本文所述化合物及中間體之分離及純化可藉由任何適宜分離或純化程序實施,例如過濾、萃取、結晶、管柱層析、薄層層析、厚層層析、製備型低壓或高壓液相層析或該等程序之組合。參考下文之製備及實例可獲知適宜分開及分離程序之特定說明。然而,當然亦可使用其他相等分開或分離程序。式 I 化合物之鹽
式I
化合物為鹼性且可轉化為相應酸加成鹽。該轉化係藉由用至少化學計算量之適當酸處理來完成,該酸係例如鹽酸、氫溴酸、硫酸、磷酸及諸如此類;及有機酸,例如乙酸、丙酸、丙酮酸、草酸、蘋果酸、丙二酸、琥珀酸、馬來酸、富馬酸、酒石酸、檸檬酸、苯甲酸、肉桂酸、甲磺酸、對甲苯磺酸、柳酸及諸如此類。通常,將游離鹼溶解於有機溶劑(例如二乙醚、乙酸乙酯、氯仿、乙醇或甲醇及諸如此類)中,並將酸添加於類似溶劑中。將溫度維持於0℃與50℃之間。所得鹽自發沈澱或可藉由添加極性較小之溶劑沈澱。 可藉由用至少化學計量當量之適宜鹼(例如氫氧化鈉或氫氧化鉀、碳酸鉀、碳酸氫鈉、氨、三乙胺及諸如此類)處理將式I
化合物之酸加成鹽轉化成相應游離鹼。實驗部分 實例 1 2-(6- 硝基吡啶 -3- 基 )-9H- 二吡啶并 [2,3-b;3',4'-d] 吡咯 步驟 1 : N-(3- 氯吡啶 -4- 基 )-6- 甲氧基吡啶 -2- 胺 用氬沖洗2 L四頸磺化燒瓶並填裝1,4-二噁烷(560 mL)。在氬下連續添加2-氯-6-甲氧基吡啶(25.0 g, 174 mmol)、3-氯吡啶-4-胺(27.5 g, 214 mmol)及碳酸銫(78.8 g, 242 mmol)。將懸浮液於環境溫度攪拌30 min。添加於1,4-二噁烷(65 mL)中之二氯[9,9-二甲基-4,5-雙(二苯基膦基)𠮿]鈀(II) (6.9 g, 9.13 mmol)並將反應混合物加熱至100℃持續65 h。添加第二份碳酸銫(20 g, 61 mmol)及二氯[9,9-二甲基-4,5-雙(二苯基膦基)-𠮿]鈀(II) (2.0 g, 2.65 mmol)於1,4-二噁烷(20 mL)中並於100℃繼續再攪拌3 h。中斷加熱並添加甲苯(645 mL)。冷卻至環境溫度後,使用微纖維過濾器無顆粒地過濾反應混合物並用甲苯(300 mL)洗濾餅。在減壓下蒸發澄清黃色濾液之溶劑並於5毫巴下乾燥殘餘物。經30 min之時段用水(250 mL)緩慢處理所得黃色固體於甲醇(375 mL)中之溶液。將混合物於環境溫度攪拌30 min並於0-5℃(冰浴)再攪拌4 h。過濾出形成之結晶物質,用甲醇/水混合物1:2 (v/v) (180 mL)洗且隨後於65℃ / 5毫巴下乾燥,以獲得淺黃色固體狀期望產物(34.1 g, 80.6 %)。1
H NMR (400 MHz, DMSO-d6
)δ
3.85 (s, 3H), 6.40 (dd,J
= 0.7, 8.1 Hz, 1H), 6.90 (dd,J
= 0.7, 7.8 Hz, 1H), 7.64 (t,J
= 7.9 Hz, 1H), 8.29 (d,J
= 5.6 Hz, 1H), 8.36 (d,J
= 5.6 Hz, 1H), 8.45 (s, 1H), 8.76 (br s, 1H), LC-MSm/z
236.1 [M+H]+
, HPLC (260 nm) 97.0面積-%。步驟 2 : 2- 甲氧基 -9H- 吡咯并 [2,3-b:4,5-c'] 二吡啶 用氬沖洗250 mL四頸磺化燒瓶並連續填裝乙酸鈀(II) (500 mg, 2.23 mmol)、四氟硼酸三-第三丁基鏻(750 mg, 2.59 mmol)及DMA (20 mL)。將此混合物在氬下於環境溫度下攪拌15 min。添加N-(3-氯吡啶-4-基)-6-甲氧基吡啶-2-胺(10.0 g, 42.4 mmol)、碳酸鉀(12 g, 86.8 mmol)及DMA (80 mL)並將反應混合物加熱至135℃ (浴溫)並於此溫度下劇烈攪拌18 h。將深色反應混合物冷卻至環境溫度,用乙酸乙酯/乙醇9:1 (v/v; 100 mL)稀釋並使用微纖維過濾器無顆粒地過濾。用少量乙酸乙酯洗滌濾餅並於75℃下在減壓下蒸發濾液。將黃色殘餘物於75℃ / 5毫巴下蒸發並於升高溫度(高達75℃)下重新溶解於二噁烷(250 mL)及乙酸乙酯/甲醇8:2 (v/v; 250 mL)中。將黃色渾濁溶液冷卻至環境溫度,填裝至條件化矽膠(50 g)並用乙酸乙酯/甲醇9:1 (v/v; 180 mL)溶析。將澄清褐色濾液於60℃下蒸發並用第三丁基甲醚(50 mL)處理油狀半結晶殘餘物。在10 min內添加正庚烷(35 mL)並將懸浮液於環境溫度下攪拌1 h。過濾出固體殘餘物,用正庚烷洗滌並於60℃ / 5毫巴下乾燥以獲得白色固體狀期望產物(5.1 g, 59.3 %)。1
H NMR (400 MHz, DMSO-d6
)δ
3.96 (s, 3H), 6.75 (d,J
= 8.6 Hz, 1H), 7.41 (dd,J
= 1.1, 5.6 Hz, 1H), 8.39 (d,J
= 5.6 Hz, 1H), 8.49 (d,J
= 8.3 Hz, 1H), 9.23 (d,J
= 0.8 Hz, 1H), 12.21 (br s, 1H), LC-MSm/z
200.2 [M+H]+
, GC 97.8面積-%。步驟 3 : 1,9- 二氫 - 二吡啶并 [2,3-b;3',4'-d] 吡咯 -2- 酮氫溴酸鹽 向250 mL四頸磺化燒瓶中填裝2-甲氧基-9H-吡咯并[2,3-b:4,5-c']二吡啶(5.0 g, 25.1 mmol)。添加乙酸(40 mL)並將懸浮液用氫溴酸(33 wt. %於AcOH中,20 mL,114 mmol)處理,加熱至80℃並於此溫度下攪拌18 h。將白色體積大之懸浮液冷卻至環境溫度,用乙酸乙酯(90 mL)處理,攪拌15 min並過濾。將白色殘餘物連續用少量乙酸乙酯及正庚烷洗滌且隨後於60℃ / 5毫巴下乾燥,以獲得白色固體狀期望產物(7.6 g, 87.3 %),其不經進一步純化即用於下一步驟。游離鹼之1
H NMR (400 MHz, DMSO-d6
)δ
6.78 (d,J
= 8.6 Hz, 1H), 7.94 (dd,J
= 0.6, 6.7 Hz, 1H), 8.63 (d,J
= 6.4 Hz, 1H), 8.64 (d,J
= 8.6 Hz, 1H), 9.62 (s, 1H), 13.28 (br s, 1H), 14.80 (br s, 1H),LC-MSm/z
186.1 [M+H]+
。步驟 4 :三氟甲烷磺酸 9H- 吡咯并 [2,3-b:4,5-c'] 二吡啶 -2- 基酯 將500 mL四頸磺化燒瓶用氬沖洗並填裝DMF (80 mL)。連續添加溴化2-側氧基-2,9-二氫-1H-吡咯并[2,3-b:4,5-c']二吡啶-6,9-二鎓鹽(8.0 g, 23.1 mmol)及N,N-二異丙基乙胺(17.5 ml, 100 mmol)。將反應混合物冷卻至0℃至5℃ (冰浴)並用N,N-雙(三氟甲基-磺醯基)苯胺(12.5 g, 35 mmol)及DMF (10 mL)處理。在升溫至環境溫度後,繼續攪拌45 min。於5℃下,添加第二份N,N-雙(三氟甲基-磺醯基)苯胺(4.2 g, 11.8 mmol)及DMF (10 mL)並於環境溫度下繼續攪拌1 h。將橙色懸浮液用碳酸氫鉀(12 g, 129 mmol)及水(40 mL)處理並於50℃下攪拌18 h。在15 min內添加水(100 mL)並將反應混合物冷卻至0℃至5℃ (冰浴)並於此溫度下攪拌1 h。過濾出沈澱並用水(50 mL)及正庚烷(50 mL)洗滌並於60℃ / 5毫巴下乾燥,以獲得米色固體狀期望產物(7.4 g, 97.5 %)。1
H NMR (400 MHz, DMSO-d6
)δ
7.46 (d,J
= 8.3 Hz, 1H), 7.55 (dd,J
= 0.9, 5.8 Hz, 1H), 8.57 (d,J
= 5.6 Hz, 1H), 8.95 (d,J
= 8.1 Hz, 1H), 9.47 (d,J
= 1.0 Hz, 1H), 12.83 (br s, 1H), LC-MSm/z
318.1 [M+H]+
, HPLC (260 nm) 96.3面積-%。步驟 5 : 2-(6- 硝基吡啶 -3- 基 )-9H- 吡咯并 [2,3-b:4,5-c'] 二吡啶乙酸鹽 將4.5 L四頸磺化燒瓶用氬沖洗並連續填裝三氟甲烷磺酸9H-吡咯并[2,3-b:4,5-c']二吡啶-2-基酯(57.2 g, 180 mmol)、2-硝基-5-(4,4,5,5-四甲基-1,3,2-二氧雜硼戊環-2-基)吡啶(86.2 g, 345 mmol)、氟化鉀(114 g, 1.96 mol)、1,4-二噁烷(1.40 L)及水(570 ml)並在氬下於環境溫度下攪拌15 min。隨後添加1,4-二噁烷(280 mL)中之二氯[9,9-二甲基-4,5-雙(二苯基膦基)𠮿]鈀(II) (22.8 g, 30.2 mmol)並將反應混合物於88℃至90℃下攪拌4.5 h。冷卻至環境溫度後,將反應混合物用乙醇(1.7 L)處理並於0℃至5℃ (冰浴)下攪拌4 h。過濾出沈澱並用乙酸乙酯(800 mL)洗滌。將濕的深褐色固體溶解於回流乙酸(800 mL)中,在真空下趁熱過濾並用熱乙酸(40 mL)洗滌。將澄清深色溶液升溫至80℃,冷卻至環境溫度並於此溫度下攪拌20 h。過濾出晶體並連續用乙酸/乙酸乙酯1:1 (200 mL)、乙酸乙酯(500 mL)及正戊烷(500 mL)洗滌,並於60℃ / 5毫巴下乾燥,以獲得27 g黃褐色粗產物(HPLC (260 nM): 99.6面積-%)。將粗製乙酸鹽(27 g)懸浮於乙酸(540 mL)及水(27 mL)中並加熱回流。使用微纖維過濾器在真空下趁熱(100℃)無顆粒地過濾熱的稍微渾濁之溶液並用乙酸(20 mL)洗滌褐色殘餘物。使濾液再次升溫直至存在澄清褐色溶液,將其冷卻至環境溫度並於該溫度下攪拌18 h。過濾體積大之懸浮液並將結晶殘餘物連續用乙酸/乙酸乙酯1:1 (150 mL)、乙酸乙酯(500 mL)及正戊烷(500 mL)洗滌並於60℃ / 5毫巴下乾燥,以獲得19.6 g深黃色粗產物(HPLC (260 nM) 99.5面積-%)。將粗產物懸浮於乙酸(390 mL)及水(19.5 mL)中並加熱回流。將澄清紅色溶液冷卻至80℃至90℃並填裝木炭(5 g)。加熱回流後,使用微纖維過濾器在真空下無顆粒地過濾懸浮液並用乙酸(45 mL)洗滌木炭殘餘物。將澄清黃色濾液於55℃下部分蒸發(約 100 mL)並向所得漿液中添加乙酸乙酯(230 mL)。冷卻至環境溫度後,過濾出漿液並用乙酸乙酯(300 mL)及正戊烷(250 mL)洗滌晶體。於60℃ / 5毫巴下乾燥後,獲得黃色結晶粉末狀期望產物(17.2 g, 27.1 %)。1
H NMR (400 MHz, DMSO-d6
)δ
1.91 (s, 3H), 7.53 (dd,J
= 1.1, 5.6 Hz, 1H), 8.21 (d,J
= 8.1 Hz, 1H), 8.48 (d,J
= 8.3 Hz, 1H), 8.54 (d,J
= 5.6 Hz, 1H), 8.85 (d,J
= 8.3 Hz, 1H), 8.95 (dd,J
= 2.2, 8.6 Hz, 1H), 9.44-9.46 (m, 2H), 11.97 (br s, 1H), 12.56 (br s, 1H), LC-MSm/z
292.2 [M+H]+
(游離鹼), HPLC (260 nm) 99.8面積-%。步驟 6 : 2-(6- 硝基吡啶 -3- 基 )-9H- 二吡啶并 [2,3-b;3',4'-d] 吡咯 將500 mL四頸磺化燒瓶用氬沖洗並填裝2-(6-硝基吡啶-3-基)-9H-吡咯并[2,3-b:4,5-c']二吡啶乙酸鹽(15.50 g, 44.1 mmol)。添加甲醇(310 ml)及三乙胺(9.5 ml, 68.2 mmol)。將反應混合物加熱至60℃至65℃並攪拌1 h。冷卻至環境溫度後,繼續再攪拌2 h。過濾懸浮液並將黃色固體用少量甲醇洗滌並於65℃ / 5毫巴下乾燥。將粗產物用水(60 mL)處理並進行超音波處理直至獲得均質懸浮液為止。於22℃至25℃ (100-20毫巴)下經16 h之時段蒸發水及殘餘甲醇。將濕的殘餘物於60℃ / 5毫巴下乾燥直至重量恆定並獲得黃色固體狀產物(12.5 g, 96.3 %)。1
H NMR (400 MHz, DMSO-d6
)δ
7.52 (dd,J
= 1.1, 5.6 Hz, 1H), 8.20 (d,J
= 8.3 Hz, 1H), 8.48 (d,J
= 8.6 Hz, 1H), 8.54 (d,J
= 5.6 Hz, 1H), 8.84 (d,J
= 8.1 Hz, 1H), 8.95 (dd,J
= 2.2, 8.6 Hz, 1H), 9.39-9.50 (m, 2H), 12.53 (s, 1H), LC-MSm/z
292.2 [M+H]+
, HPLC (260 nm) 99.2面積-%。
Claims (9)
- 如請求項1之式I化合物之製備方法,其中在步驟a)中,該式2化合物係三氟甲烷磺酸9H-吡咯并[2,3-b:4,5-c']二吡啶-2-基酯。
- 如請求項1之式I化合物之製備方法,其中在步驟a)中,該鹼係氟化鉀。
- 如請求項1之式I化合物之製備方法,其中在步驟a)中,極性溶劑係選自THF、2-Me-THF或二噁烷。
- 如請求項1之式I化合物之製備方法,其中在步驟a)中,該酸係乙酸、 三氟乙酸、肉桂酸、草酸、酒石酸、鹽酸、氫溴酸、硫酸或磷酸。
- 如請求項1之式I化合物之製備方法,其中在步驟b)中,該等有機或無機酸係乙酸、三氟乙酸、肉桂酸、草酸、酒石酸、鹽酸、氫溴酸、硫酸或磷酸。
- 如請求項1之式I化合物之製備方法,其中在步驟b)中,該鹼係氫氧化鈉或氫氧化鉀、三甲胺、三乙胺、碳酸鉀、碳酸氫鈉或氨。
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