CN1922193B - 化学方法 - Google Patents
化学方法 Download PDFInfo
- Publication number
- CN1922193B CN1922193B CN2005800054068A CN200580005406A CN1922193B CN 1922193 B CN1922193 B CN 1922193B CN 2005800054068 A CN2005800054068 A CN 2005800054068A CN 200580005406 A CN200580005406 A CN 200580005406A CN 1922193 B CN1922193 B CN 1922193B
- Authority
- CN
- China
- Prior art keywords
- phenyl
- formula
- oxadiazol
- compound
- methylpyrazin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001311 chemical methods and process Methods 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- -1 3-methoxy-5-methylpyrazin-2-yl Chemical group 0.000 claims description 38
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 30
- NKFLEFWUYAUDJV-UHFFFAOYSA-N pyridine-3-sulfonamide Chemical compound NS(=O)(=O)C1=CC=CN=C1 NKFLEFWUYAUDJV-UHFFFAOYSA-N 0.000 claims description 23
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 20
- 125000005929 isobutyloxycarbonyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])OC(*)=O 0.000 claims description 20
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 claims description 15
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 14
- 239000012074 organic phase Substances 0.000 claims description 11
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 8
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 7
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 7
- 239000008096 xylene Substances 0.000 claims description 7
- 239000003125 aqueous solvent Substances 0.000 claims description 6
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 6
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims description 6
- MYAJTCUQMQREFZ-UHFFFAOYSA-K tppts Chemical compound [Na+].[Na+].[Na+].[O-]S(=O)(=O)C1=CC=CC(P(C=2C=C(C=CC=2)S([O-])(=O)=O)C=2C=C(C=CC=2)S([O-])(=O)=O)=C1 MYAJTCUQMQREFZ-UHFFFAOYSA-K 0.000 claims description 5
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 claims description 4
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 claims description 4
- 125000003435 aroyl group Chemical group 0.000 claims description 4
- 125000005101 aryl methoxy carbonyl group Chemical group 0.000 claims description 4
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 claims description 4
- 125000005328 phosphinyl group Chemical group [PH2](=O)* 0.000 claims description 4
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000011698 potassium fluoride Substances 0.000 claims description 3
- 235000003270 potassium fluoride Nutrition 0.000 claims description 3
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 claims description 2
- AKNUHUCEWALCOI-UHFFFAOYSA-N N-ethyldiethanolamine Chemical compound OCCN(CC)CCO AKNUHUCEWALCOI-UHFFFAOYSA-N 0.000 claims description 2
- 229910002666 PdCl2 Inorganic materials 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 125000005620 boronic acid group Chemical class 0.000 claims description 2
- XXBDWLFCJWSEKW-UHFFFAOYSA-N dimethylbenzylamine Chemical compound CN(C)CC1=CC=CC=C1 XXBDWLFCJWSEKW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003446 ligand Substances 0.000 claims description 2
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims description 2
- 235000011056 potassium acetate Nutrition 0.000 claims description 2
- 125000004454 (C1-C6) alkoxycarbonyl group Chemical group 0.000 claims 2
- 125000003944 tolyl group Chemical group 0.000 claims 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 28
- 125000004509 1,3,4-oxadiazol-2-yl group Chemical group O1C(=NN=C1)* 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 26
- 238000002360 preparation method Methods 0.000 description 25
- 239000002585 base Substances 0.000 description 16
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 230000002902 bimodal effect Effects 0.000 description 11
- 239000011541 reaction mixture Substances 0.000 description 11
- BRZFYXBFRBIKIH-UHFFFAOYSA-N B(O)(O)OC1=CC=C(C=C1)C2=NN=CO2 Chemical compound B(O)(O)OC1=CC=C(C=C1)C2=NN=CO2 BRZFYXBFRBIKIH-UHFFFAOYSA-N 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 239000000543 intermediate Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 8
- NHDIQVFFNDKAQU-UHFFFAOYSA-N tripropan-2-yl borate Chemical compound CC(C)OB(OC(C)C)OC(C)C NHDIQVFFNDKAQU-UHFFFAOYSA-N 0.000 description 8
- UGBVZNXXRZISHN-UHFFFAOYSA-N 2-(4-bromophenyl)-1,3,4-oxadiazole Chemical compound C1=CC(Br)=CC=C1C1=NN=CO1 UGBVZNXXRZISHN-UHFFFAOYSA-N 0.000 description 7
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical group [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- CETVQRFGPOGIQJ-UHFFFAOYSA-N lithium;hexane Chemical compound [Li+].CCCCC[CH2-] CETVQRFGPOGIQJ-UHFFFAOYSA-N 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical group [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- WXOMKINBRCKWNI-UHFFFAOYSA-N [4-(1,3,4-oxadiazol-2-yl)phenyl]boronic acid Chemical compound C1=CC(B(O)O)=CC=C1C1=NN=CO1 WXOMKINBRCKWNI-UHFFFAOYSA-N 0.000 description 5
- 239000008346 aqueous phase Substances 0.000 description 5
- WMFOQBRAJBCJND-UHFFFAOYSA-M lithium hydroxide Inorganic materials [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 5
- 125000006239 protecting group Chemical group 0.000 description 5
- NPDACUSDTOMAMK-UHFFFAOYSA-N 4-Chlorotoluene Chemical compound CC1=CC=C(Cl)C=C1 NPDACUSDTOMAMK-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- IBSQPLPBRSHTTG-UHFFFAOYSA-N 1-chloro-2-methylbenzene Chemical compound CC1=CC=CC=C1Cl IBSQPLPBRSHTTG-UHFFFAOYSA-N 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- FYOQEFGAZKEPGG-UHFFFAOYSA-N [Li]C1=CC=C(C)C=C1 Chemical compound [Li]C1=CC=C(C)C=C1 FYOQEFGAZKEPGG-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000011928 denatured alcohol Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 125000001072 heteroaryl group Chemical group 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 238000004949 mass spectrometry Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- DVSDBMFJEQPWNO-UHFFFAOYSA-N methyllithium Chemical compound C[Li] DVSDBMFJEQPWNO-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- WRECIMRULFAWHA-UHFFFAOYSA-N trimethyl borate Chemical group COB(OC)OC WRECIMRULFAWHA-UHFFFAOYSA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 229940118365 Endothelin receptor antagonist Drugs 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- CCCUVHHPYBWVOW-UHFFFAOYSA-K [Na+].[Na+].[Na+].[O-]S(=O)(=O)c1ccccc1.[O-]S(=O)(=O)c1ccccc1.[O-]S(=O)(=O)c1ccccc1 Chemical compound [Na+].[Na+].[Na+].[O-]S(=O)(=O)c1ccccc1.[O-]S(=O)(=O)c1ccccc1.[O-]S(=O)(=O)c1ccccc1 CCCUVHHPYBWVOW-UHFFFAOYSA-K 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 125000001584 benzyloxycarbonyl group Chemical group C(=O)(OCC1=CC=CC=C1)* 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000002308 endothelin receptor antagonist Substances 0.000 description 2
- 125000003754 ethoxycarbonyl group Chemical group C(=O)(OCC)* 0.000 description 2
- KLKFAASOGCDTDT-UHFFFAOYSA-N ethoxymethoxyethane Chemical compound CCOCOCC KLKFAASOGCDTDT-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 125000005931 tert-butyloxycarbonyl group Chemical group [H]C([H])([H])C(OC(*)=O)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- FKASFBLJDCHBNZ-UHFFFAOYSA-N 1,3,4-oxadiazole Chemical compound C1=NN=CO1 FKASFBLJDCHBNZ-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- JRIUSNXEAMPSCD-UHFFFAOYSA-N 2-methylpropyl n-(3-methoxy-5-methylpyrazin-2-yl)carbamate Chemical compound COC1=NC(C)=CN=C1NC(=O)OCC(C)C JRIUSNXEAMPSCD-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- RMRFFCXPLWYOOY-UHFFFAOYSA-N allyl radical Chemical compound [CH2]C=C RMRFFCXPLWYOOY-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- CWBHKBKGKCDGDM-UHFFFAOYSA-N bis[(2,2,2-trifluoroacetyl)oxy]boranyl 2,2,2-trifluoroacetate Chemical compound FC(F)(F)C(=O)OB(OC(=O)C(F)(F)F)OC(=O)C(F)(F)F CWBHKBKGKCDGDM-UHFFFAOYSA-N 0.000 description 1
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
- 239000003701 inert diluent Substances 0.000 description 1
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- 208000017169 kidney disease Diseases 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical group [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
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- 239000003960 organic solvent Substances 0.000 description 1
- 208000027753 pain disease Diseases 0.000 description 1
- UYWQUFXKFGHYNT-UHFFFAOYSA-N phenylmethyl ester of formic acid Natural products O=COCC1=CC=CC=C1 UYWQUFXKFGHYNT-UHFFFAOYSA-N 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
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- 125000001424 substituent group Chemical group 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- AJSTXXYNEIHPMD-UHFFFAOYSA-N triethyl borate Chemical group CCOB(OCC)OCC AJSTXXYNEIHPMD-UHFFFAOYSA-N 0.000 description 1
- GKASDNZWUGIAMG-UHFFFAOYSA-N triethyl orthoformate Chemical compound CCOC(OCC)OCC GKASDNZWUGIAMG-UHFFFAOYSA-N 0.000 description 1
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/02—Boron compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/04—Centrally acting analgesics, e.g. opioids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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Abstract
描述了式(I)和(IV)化合物的制备方法。
Description
本发明涉及一种改良的制备中间体的化学方法。某些这种中间体可用于制备可用于治疗温血动物如人类的如癌症,疼痛和心血管疾病的化合物,特别是具有内皮素受体拮抗剂活性的化合物。
尤其,本发明涉及用于制备[4-(1,3,4-噁二唑-2-基)苯基]硼酸的化学方法,其用于制备N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺,该化合物被如国际专利申请WO96/40681的实施例36所披露。该化合物具有内皮素受体拮抗剂活性,因而可用于需要所述拮抗剂活性的时候,如作为药理学、诊断和相关研究中的研究工具,或用于治疗疾病和病症,包括但不限于高血压、肺动脉高压、心或脑循环系统疾病和肾脏病。此外,该化合物也可用于治疗温血动物如人类的癌症和疼痛。
国际专利申请WO96/40681和WO98/40332披露了一种制备N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺的路线。该路线包括化合物N-(异丁氧基羰基)-2-(4-甲氧基羰基苯基)-N-(3-甲氧基-5-甲基吡嗪-2-基)吡啶-3-磺酰胺作为中间体使用和在合成结束时于苯基4-位形成1,3,4-噁二唑。现有这种路线在合成相对小量的N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺时是令人满意的,但它是线性合成而不是会聚合成,包括大量中间体的分离。因而,该合成的总产量不高。
而且,当苯基4-位的杂芳基部分在最后一步形成时,需要采用线性合成方法,首先合成分子的其余部分。为了研究结构-活性关系,显然不希望分子截然不同部分的取代基有变化。非常需要设计出合成这种类型化合物的会聚方法。这也将有利于有效生产大量N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺。
现在我们设计了杂芳基-苯基硼酸,尤其是,[4-(1,3,4-噁二唑-2-基)苯基]硼酸的更加改良的制备方法。该方法利用生产N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺的较此前描述的路线更会聚的路线,且使大量必须分离的中间体减少。这提供了节省生产时间和成本的显著优势。
在本发明的另一方面,按照本发明制备的杂芳基-苯基硼酸之一,[4-(1,3,4-噁二唑-2-基)苯基]硼酸,用于制备N-保护的N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺,尤其是N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺。然后,可以将这些中间体脱保护以产生N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺。
本发明的杂芳基-苯基硼酸的制备方法是利用杂芳基环质子增强的酸性,并包括连续使用两种碱。最初试图将一当量的碱加入杂芳基-苯基溴化合物以引起卤素-金属交换来对抗杂芳基环脱质子。用硼酸酯中止反应,得到微量的所需产物,和起始物及副产物。本发明人发现,令人惊奇的是,连续使用两种碱使所需的杂芳基-苯基硼酸的产量好。在本发明的方法中,杂芳基环在用(典型地)“强”碱引起卤素-金属交换之前,最初用(典型地)“弱”碱脱质子。
按照本发明的第一方面,提供一种式I化合物的制备方法
其中,
X1选自O,NR1或S;和
X2选自CH或N;
其中R1为氮保护基团,
该方法包括:-
式II化合物
和如下物质的顺序反应,
(i)甲基-或任选被取代的芳基-锂;然后
(ii)正丁基-,仲丁基-,叔丁基-或正己基-锂;然后
(iii)硼酸酯。
对于制备步骤(i)、(ii)和(iii),该反应可以方便地在惰性溶剂或稀释剂或醚性溶剂如乙醚、四氢呋喃、二乙氧基甲烷、1,2-二甲氧基乙烷或1,4-二噁烷中完成。因此,如,该反应可以通过于一个温度范围,如-90至-50℃,更特别地-70至-55℃,适宜在或近-70℃,在合适的溶剂或稀释剂,如,醚性溶剂如四氢呋喃中,用4-甲基苯基锂,随后用正己基锂,和最后用硼酸三异丙基酯连续处理2-(4-溴苯基)-1,3,4-噁二唑来完成。
将任选式II的杂芳基-苯基溴化合物加入第一种碱的溶液以脱质子,随后加入第二种碱以促使金属交换。虽然这种方法在产量和质量上有点不理想,但在由于在环境温度不稳定而必须在原位生成第一种碱的情况下,这种方法就有优势。在这种情况下,只需要一个低温容器来完成该方法。
制备步骤(i)、(ii)、和(iii)中使用的反应物的摩尔比分别优选为1.0-1.5∶1.0-1.5∶2.1-3,但分别更优选为1.06-1.3∶1.07-1.1∶2.2-2.3。适宜地,不必将在式II化合物转化为式I化合物的过程中形成的锂化中间体分离,如每个都是在有机溶剂中制备和作为溶液使用。因此,式I化合物可以由式II化合物以单罐步骤制备。
芳基锂为,如,苯基或萘基-锂。
任选的芳基锂的取代基为,如甲基。
特别优选的任选被取代的芳基锂为,如苯基-、2-甲基苯基-、4-甲基苯基-、2,4,6-三甲苯基-或萘基-锂。
硼酸酯为硼酸烷基酯、烯基酯或芳基酯,如硼酸三甲基酯、三乙基酯或三异丙基酯。
当R1为氮保护基团,则合适的保护方法为本领域技术人员所熟知。常用的保护基团可以按照实施标准(例如见T.W.Green,有机合成中的保护基团(Protective Groups in Organic Synthesis),John Wileyand Sons,1991)使用。
合适的氮保护基团,R1为,如(1-6C)烷基、苯基、烯丙基、甲氧基甲基、苄基、三苯基甲基或二苯基氧膦基保护基团。
本发明的第一方面提供具有商业上可接受的产量和高质量的式I化合物。
此外,X1和X2的值如下。所述值可以用于在此前或此后定义的任何适当的定义、权利要求或实施方式中。
X1为O。
X1为NR1。
X1为S。
X2为CH。
X2为N。
X1为O,和X2为CH。
X1为O,和X2为N。
X1和X2为N。
X1为NR1,和X2为CH。
X1为NR1,和X2为N。
X1为S和X2为CH。
X1为S和X2为N。
R1为烯丙基或苄基。
R1为苄基。
因此,本发明的其它方面提供一种式I化合物的制备方法
其中,
X1选自O、NR1或S;和
X2选自CH或N;
其中R1为氮保护基团;
该方法包括:-
式II化合物
和如下物质的顺序反应,
(i)4-甲基苯基锂;然后
(ii)正己基锂;然后
(iii)硼酸三异丙基酯。
本发明另一方面提供一种式I化合物的制备方法
其中,
X1选自O、NR1或S;和
X2选自CH或N;
其中R1为氮保护基团;其含有:-
式II化合物
和如下物质的顺序反应,
(i)甲基锂;然后
(ii)正己基锂;然后
(iii)硼酸三异丙基酯。
本发明另一方面提供一种式I化合物的制备方法
其中,
X1为O;和
X2为N;
该方法包括:-
式II化合物
和如下物质的顺序反应,
(i)甲基锂;然后
(ii)正丁基锂;然后
(iii)硼酸三异丙基酯。
本发明另一方面提供一种式I化合物的制备方法,
其中,
X1为O;和
X2为N;
该方法包括:-
式II化合物
和如下物质的顺序反应,
(i)4-甲基苯基锂;然后
(ii)正丁基锂;然后
(iii)硼酸三异丙基酯。
式(II)化合物可以按照Bioorganic & Medicinal ChemistryLetters,2002,12(20),2879-2882;Eur.J.Med.Chem.,2000,35,157-162;Helvetica Chimica Acta,1950,33,1271-1276;Eur.J.Med.Chem.,1985,20(3),257-66和J.Het.Chem.,1989,26,1341所披露的实验方法和步骤制备。
本发明的另一方面提供按照本发明制备的[4-(1,3,4-噁二唑-2-基)苯基]硼酸在制备式IV化合物中的用途,式IV化合物是可用于制备N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺的中间体。
N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺是通过使式IV化合物脱保护制备得到的。
在本发明的这一方面,[4-(1,3,4-噁二唑-2-基)苯基]硼酸与式III化合物偶联产生式IV化合物。
尤其,该反应发生于水性溶剂中,如甲醇、乙醇、异丙醇、工业用甲醇变性酒精(IMS)、异丁醇、NMP(N-甲基吡咯烷酮)、DMF;其中含或不含有机相,如甲苯或二甲苯,于一个温度范围,如60至100℃,更特别地75至85℃,存在:
(i)硼酸;
(ii)合适的钯(0)源,如PdCl2、Pd(Ph3P)4或Pd(OAc)2;
(iii)合适的配体,如三苯基膦或3,3′,3″-次膦基三(苯磺酸)三钠盐;
(iv)碱,如三乙基胺、苄基二甲基胺、N-甲基吗啉、N-甲基哌啶、三乙醇胺、乙基二乙醇胺、二异丙基乙基胺、醋酸钾、氟化铯或氟化钾。
特别地,所述钯源为醋酸钯。
特别地,所述碱为N-甲基吗啉。另一方面,特别地,所述碱为三乙基胺。
特别地,该反应于不含有机相的水性溶剂中进行。另一方面,特别地,该反应于含有机相的水性溶剂中进行。当该反应于含有机相的水性溶剂中进行,特别地,有机相含有甲苯。本发明的另一方面,当该反应于含有机相的水性溶剂中进行,特别地,有机相含有二甲苯。
另一方面,该反应更特别地在水和异丙醇中的醋酸钯、3,3′,3″-次膦基三(苯磺酸)三钠盐、N-甲基吗啉的存在下进行。
另一方面,该反应更特别地在醋酸钯、3,3′,3″-次膦基三(苯磺酸)三钠盐、三乙基胺、二甲苯、水和IMS的存在下进行。
制备步骤(i),(ii),(iii)和(iv)中使用的反应物的摩尔比,分别优选为1.0-2.0∶0.02-0.3∶0.06-0.9∶1.5-5.0,但分别更优选为1.4-1.6∶0.03-0.1∶0.09-0.3∶2.0-3.0。
式III或式IV化合物中,P为氮保护基团。合适的保护方法为本领域技术人员所熟知。常规的保护基团可以按照实施标准(如见T.W.Green,Protective Groups in Organic Synthesis,John Wiley and Sons,1991)使用。
合适的P涵义为,如酰基,如C1-6烷酰基如乙酰基;芳酰基,如苯甲酰基;C1-6烷氧基羰基,如甲氧基羰基、乙氧基羰基、异丁氧基羰基或叔丁氧基羰基;芳基甲氧基羰基,如苄氧基羰基;氧膦基,如二苯基氧膦基;苄基或C2-6烯基如烯丙基。
一合适的P涵义为C1-6烷氧基羰基。更合适的P涵义为甲氧基羰基、乙氧基羰基或异丁氧基羰基。更特别地,P涵义为异丁氧基羰基。
这里描述的氮保护基团的脱保护的条件需要随着所选的保护基团而变化。因此,如,酰基如C1-6烷酰基或C1-6烷氧基羰基或芳酰基可以被除去,如,通过使用合适的碱,如碱金属氢氧化物,如氢氧化锂或氢氧化钠,或胺,如氨来水解。可选择地,烷氧基羰基如叔丁氧基羰基可以被除去,如,通过使用合适的酸如盐酸、硫酸或磷酸或三氟醋酸来处理,以及芳基甲氧基羰基如苄氧基羰基可以被除去,如,经催化剂如碳上的钯氢化,或通过使用Lewis酸如三(三氟醋酸)硼处理。氧膦基可以通过使用碱,如碱金属氢氧化物,如氢氧化锂或氢氧化钠,或胺,如氨水解除去。苄基可以通过用催化剂如碳上钯氢化除去。C2-6烯基如烯丙基可以经钯辅助水解除去。
在本发明另一方面,提供式IV化合物的制备方法,其包括使[4-(1,3,4-噁二唑-2-基)苯基]硼酸与式III化合物反应。
在本发明另一方面,提供式IV化合物的制备方法,其包括使按照本发明制备的[4-(1,3,4-噁二唑-2-基)苯基]硼酸与式III化合物反应。
在本发明的这一方面,更特别地,本发明提供按照本发明制备的[4-(1,3,4-噁二唑-2-基)苯基]硼酸在制备N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺(一种式IV化合物)和可用于制备N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺的中间体中的用途。
在本发明的这一方面,[4-(1,3,4-噁二唑-2-基)苯基]硼酸与N-(异丁氧基羰基)-2-氯-N-(3-甲氧基-5-甲基吡嗪-2-基)吡啶-3-磺酰胺偶联以产生N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺。
按照WO96/40681中实施例1的描述制备N-(异丁氧基羰基)-2-氯-N-(3-甲氧基-5-甲基吡嗪-2-基)吡啶-3-磺酰胺。
因此,按照本发明的这一方面,提供N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺的制备方法,其包括使[4-(1,3,4-噁二唑-2-基)苯基]硼酸与N-(异丁氧基羰基)-2-氯-N-(3-甲氧基-5-甲基吡嗪-2-基)吡啶-3-磺酰胺偶联。
因此,在本发明另一方面,提供[4-(1,3,4-噁二唑-2-基)苯基]硼酸在制备N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺中的用途。
在本发明另一方面,提供按照本发明的方法制备的[4-(1,3,4-噁二唑-2-基)苯基]硼酸在制备N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺中的用途。
在本发明另一方面,提供一种式IV化合物。
在本发明另一方面,提供N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺。
在本发明另一方面,提供N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺在制备N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-基]苯基)吡啶-3-磺酰胺中的用途。
现在将通过下列非限制性实施例说明本发明,其中,除非另有说明:-
(i)产量仅用于帮助读者理解,而不是不辞辛苦地生产开发达到的最大量;
(ii)1HNMR谱是在270MHz或400MHz下,于DMSOd6中,用四甲基硅烷(TMS)作内标测定的,并用相对于TMS的百万分比率的化学位移(δ值)来表示,用常规缩写标注主要的峰:s,单峰;m,多重峰;t,三重峰;br,宽峰;d,双峰。
实施例1
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
于-65℃,将甲基锂(8%w/w,于二乙氧基甲烷中)的溶液(65ml)加入2-(4-溴苯基)-1,3,4-噁二唑(40g)的四氢呋喃(THF)(415ml)混悬液中。一个小时后,于-65℃,加入正丁基锂(2.5M,于己烷中)的溶液(78ml)。一个小时后,加入硼酸三异丙基酯(90ml)且同时保持该反应混合物于-65℃。该反应混合物于-65℃保持一个小时,然后加温至-20℃并浸入醋酸(28ml)与水(222ml)的混合物中。分离生成的固体,用THF和水洗涤,并干燥以产生标题化合物(28.96g95.1%w/w,82%);400MHz NMR谱:(DMSOd6)8.00(s,4H),8.31(s,2H),9.35(s,1H);质谱MH+191.0628(计算值,使用11-B)实测值191.0633。
用作起始物的2-(4-溴苯基)-1,3,4-噁二唑制备如下:
在4-溴苄基酰肼(200g)于工业用甲醇变性酒精(700ml)中的混悬液中加入原甲酸三乙酯(309ml)、工业用甲醇变性酒精(100ml)和硫酸(0.8ml)。将该反应混合物加热回流1小时。将该反应混合物冷却至0-5℃并将产物结晶。分离产物,洗涤和干燥以产生2-(4-溴苯基)-1,3,4-噁二唑(186.1g,89.9%)。400MHz NMR谱:(DMSOd6)9.35(s,1H),7.98(d,1H),7.95(d,1H),7.84(d,1H),7.81(d,1H);质谱MH+224.9663(计算值,使用79-Br)实测值224.9701。
实施例2
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
将锂颗粒(8.2g)和四氢呋喃(670g)投入于氩气中的反应器中且将该混合物冷却至-35℃。于-35℃,加入4-氯甲苯(74.3g)并将该混合物在此温度保持6小时。于-65℃,将生成的溶液加入2-(4-溴苯基)-1,3,4-噁二唑(124.4g)的四氢呋喃(800g)混悬液中。30分钟后,于-65℃,加入正己基锂(33%w/w,于己烷中)溶液(240ml)。另一个30分钟后,加入硼酸三异丙基酯(230.8g)并将该反应混合物保持于-65℃。将该反应混合物加温至-35℃并浸入醋酸(91.5g)的水溶液(688g)。分离生成的固体,用THF和水洗涤,并干燥以产生标题化合物(92.2g,88%)。
实施例3
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
重复实施例2,但将4-氯甲苯的投料量由1.06摩尔增加至1.30摩尔。该标题化合物的产量增至89.3%。
实施例4
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
在氩气中,将四氢呋喃(250g)投入锂颗粒(3.02g)和联苯(0.01g)的混合物中并将该混合物冷却至-30℃。于-30℃,缓慢加入2-氯甲苯(27.55g)。该反应于-30℃保持6小时然后冷却至-65℃。于-65℃,缓慢加入2-(4-溴苯基)-1,3,4-噁二唑(50.0g)的THF(300g)混合物。该反应于-65℃保持30分钟,然后于-65℃,加入正己基锂(33%w/w,于己烷中,86ml)的溶液。该反应于-65℃保持30分钟,然后于-65℃,加入硼酸三甲基酯(48.7g)。该反应于-65℃保持10分钟,然后加入甲醇(55.3g),随后加入4-甲基-2-戊酮(240g)。将该反应混合物加温并于最高温度55℃真空蒸馏出低沸点溶剂。将残留的混合物冷却至0℃并加入10%w/w硫酸(92g),随后加入水(92g)同时保持温度在7℃以下。产物沉淀。通过加入10%w/w硫酸(85.3g)将pH调节至6.5。将该混合物加热至40℃然后冷却回5-10℃。将产物分离并用THF(56g)和水(60g)洗涤,产生湿标题化合物(25.2g,60%)。
实施例5
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
在氩气中,将四氢呋喃投入锂颗粒(7.6g)并将该混合物冷却至-30℃。于-30℃,缓慢加入2-氯甲苯(69.4g)。该反应于-30℃保持6小时并于-65℃加入2-(4-溴苯基)-1,3,4-噁二唑(124.4g)的四氢呋喃(800g)混悬液。该反应于-65℃保持30分钟,然后于-65℃加入正己基锂(33%w/w,于己烷中,245ml)的溶液。该反应于-65℃保持30分钟,然后于-65℃加入硼酸三甲基酯(230.8g)。该反应于-65℃保持30分钟,然后加入甲醇(175ml),随后加入4-甲基-2-戊酮(600g)。将该反应混合物加温并在最高温度50℃下真空蒸馏出低沸点溶剂。将该反应混合物冷却至5-10℃并通过加入5%w/w硫酸(990.5g)将pH调节至6.5。产物沉淀。将该混合物加热至40℃然后冷却回10℃。分离产物,用THF和水洗涤,并干燥产生标题化合物(79.3g,75.5%)。
实施例6
[4-(1,3,4-噁二唑-2-基)苯基]硼酸
重复实施例4,但用氯苯(61.6g)代替2-氯甲苯。分离的标题化合物的产量为87.8g(83.8%)。
实施例7
N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-
基]苯基)吡啶-3-磺酰胺
在超声波浴中,在6分钟内使醋酸钯(0.4144g)和3,3′,3″-次膦基三(苯磺酸)三钠盐30%w/w的水溶液(3.26g)溶于水(35ml)。将该黄色溶液加入[4-(1,3,4-噁二唑-2-基)苯基]硼酸(10g)和[(2-氯吡啶-3-基)磺酰基](3-甲氧基-5-甲基吡嗪-2-基)氨基甲酸异丁基酯(16.86g)于二甲苯(100ml)、工业用甲醇变性酒精(50ml)和三乙基胺(17ml)的搅拌浆中。然后将该催化剂溶解烧瓶用水(5ml)洗涤并将该反应混合物于油浴(105℃)上加热回流(80℃)并搅拌回流24.5小时。将该反应混合物冷却至30℃并经Whatman GF/B玻璃滤纸过滤并分离除去下层水相。用二甲苯(20ml)洗涤该反应的烧瓶和滤饼。用二甲苯洗涤以再提取水相。搅拌该合并的有机相并于配有高架式搅拌器、水冷凝器和氮气的干净的500ml 4颈烧瓶中加热回流(85℃)。在6分钟内滴加Essochem溶剂30(烃类Bp 100-130℃)(100ml)并将该混合物自冷却至环境温度,然后进一步冷却至-5℃并保持1小时。滤出该产物并用Essochem溶剂30(50ml)洗涤。在过滤器上干燥滤饼3小时,得到15.20g100%浓度,产量76.8%.270MHz 1H-NMR谱:0.70(d,6H),1.72(m,1H),2.51(s,3H),3.84(d,2H),4.00(s,3H),7.59(m,1H);7.80(d,2H),7.90(s,1H),8.17(d,2H),8.50(s,1H),8.90(m,1H)和9.00(d,1H)。质谱MH+=525.2(C24H25N6O6S=525.16)。
实施例8
N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-
基]苯基)吡啶-3-磺酰胺
在氮气吹扫的配有高架式搅拌器的500mL多颈瓶中投入[(2-氯吡啶-3-基)磺酰基](3-甲氧基-5-甲基吡嗪-2-基)氨基甲酸异丁基酯(22.15g)、[4-(1,3,4-噁二唑-2-基)苯基]硼酸(12.26g)、异丙醇(60ml)、水(140ml)和3,3′,3″-次膦基三(苯磺酸)三钠盐30%w/w水溶液(13.7g)。开始搅拌并于10分钟后加入醋酸钯(0.541g)。加入N-甲基吗啉(13.25ml)并将温度调节至80℃。4小时20分钟后,加入甲苯(140ml)并将温度调节至60℃。另一个45分钟后,将该混合物经1μm玻璃纤维滤纸过滤并分离除去水相。用甲苯(22ml)洗涤该反应烧瓶和滤饼。用甲苯洗涤以再提取水相并合并有机层。得到未分离的标题化合物(22.8g,90%)。
实施例9
N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-噁二唑-2-
基]苯基)吡啶-3-磺酰胺
在氮气吹扫的配有高架式搅拌器的150ml多颈瓶中投入[(2-氯吡啶-3-基)磺酰基](3-甲氧基-5-甲基吡嗪-2-基)氨基甲酸异丁基酯(7.75g)、[4-(1,3,4-噁二唑-2-基)苯基]硼酸(4.29g)、异丙醇(21ml)、水(49ml)和3,3′,3″-次膦基三(苯磺酸)三钠盐30%w/w水溶液(2.88g)。开始搅拌并于10分钟后加入醋酸钯(0.114g)。加入氟化钾(2.48g)并将温度调节至80℃。5小时后加入甲苯(49ml)并将温度调节至60℃。另一个10分钟后,将该混合物经1μm玻璃纤维滤纸过滤并分离除去水相。有机相含有未分离的标题化合物(7.36g,83%)。
Claims (7)
2.按照权利要求1的方法,其中P选自芳酰基、C1-6烷氧基羰基和芳基甲氧基羰基。
3.按照权利要求1或2的方法,其中P为异丁氧基羰基。
4.如权利要求1请求保护的方法,其中所述有机相为甲苯或二甲苯。
6.按照权利要求5的方法,其中P选自芳酰基、C1-6烷氧基羰基和芳基甲氧基羰基。
7.如权利要求5或6请求保护的式IV化合物,其为N-(异丁氧基羰基)N-(3-甲氧基-5-甲基吡嗪-2-基)-2-(4-[1,3,4-二唑-2-基]苯基)吡啶-3-磺酰胺。
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