CN107879964A - 1‑(5‑(2‑氟苯基)‑1‑3‑(3‑甲氧丙氧基)苯磺酰氯)‑1h‑吡咯‑3‑基)‑n‑甲基胺的制备方法 - Google Patents
1‑(5‑(2‑氟苯基)‑1‑3‑(3‑甲氧丙氧基)苯磺酰氯)‑1h‑吡咯‑3‑基)‑n‑甲基胺的制备方法 Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- 125000004198 2-fluorophenyl group Chemical group [H]C1=C([H])C(F)=C(*)C([H])=C1[H] 0.000 title abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000005576 amination reaction Methods 0.000 claims abstract description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 26
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- CSKNSYBAZOQPLR-UHFFFAOYSA-N benzenesulfonyl chloride Chemical compound ClS(=O)(=O)C1=CC=CC=C1 CSKNSYBAZOQPLR-UHFFFAOYSA-N 0.000 claims description 17
- 229940125782 compound 2 Drugs 0.000 claims description 14
- 229940125904 compound 1 Drugs 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 229940126214 compound 3 Drugs 0.000 claims description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- ABRVLXLNVJHDRQ-UHFFFAOYSA-N [2-pyridin-3-yl-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound FC(C1=CC(=CC(=N1)C=1C=NC=CC=1)CN)(F)F ABRVLXLNVJHDRQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000012321 sodium triacetoxyborohydride Substances 0.000 claims description 5
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 150000007530 organic bases Chemical class 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 239000012279 sodium borohydride Substances 0.000 claims description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 5
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 claims 4
- 239000003513 alkali Substances 0.000 claims 4
- 239000012312 sodium hydride Substances 0.000 claims 4
- 229910000104 sodium hydride Inorganic materials 0.000 claims 4
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims 3
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims 2
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- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical group CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 claims 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims 1
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- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims 1
- 229910000024 caesium carbonate Inorganic materials 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000012973 diazabicyclooctane Substances 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- 125000001207 fluorophenyl group Chemical group 0.000 claims 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000012280 lithium aluminium hydride Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims 1
- XCVNDBIXFPGMIW-UHFFFAOYSA-N n-ethylpropan-1-amine Chemical compound CCCNCC XCVNDBIXFPGMIW-UHFFFAOYSA-N 0.000 claims 1
- 229910000027 potassium carbonate Inorganic materials 0.000 claims 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims 1
- 229940090181 propyl acetate Drugs 0.000 claims 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims 1
- 229910000029 sodium carbonate Inorganic materials 0.000 claims 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims 1
- 235000019345 sodium thiosulphate Nutrition 0.000 claims 1
- 210000002700 urine Anatomy 0.000 claims 1
- -1 urine Element Chemical compound 0.000 claims 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims 1
- RZQWBHXXTLMXJR-UHFFFAOYSA-N 3-(3-methoxypropoxy)benzenesulfonyl chloride Chemical compound COCCCOC1=CC=CC(S(Cl)(=O)=O)=C1 RZQWBHXXTLMXJR-UHFFFAOYSA-N 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 238000006268 reductive amination reaction Methods 0.000 abstract 1
- 230000006103 sulfonylation Effects 0.000 abstract 1
- 238000005694 sulfonylation reaction Methods 0.000 abstract 1
- 231100000331 toxic Toxicity 0.000 abstract 1
- 230000002588 toxic effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 17
- 230000002829 reductive effect Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Natural products O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 8
- 239000012074 organic phase Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- 125000003170 phenylsulfonyl group Chemical group C1(=CC=CC=C1)S(=O)(=O)* 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 206010011224 Cough Diseases 0.000 description 4
- 102000004190 Enzymes Human genes 0.000 description 4
- 108090000790 Enzymes Proteins 0.000 description 4
- 239000008346 aqueous phase Substances 0.000 description 4
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- CEAJFNBWKBTRQE-UHFFFAOYSA-N methanamine;methanol Chemical compound NC.OC CEAJFNBWKBTRQE-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004440 column chromatography Methods 0.000 description 3
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- 238000010791 quenching Methods 0.000 description 3
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- NTYJJOPFIAHURM-UHFFFAOYSA-N Histamine Chemical compound NCCC1=CN=CN1 NTYJJOPFIAHURM-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000005829 chemical entities Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000857 drug effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- SUBDBMMJDZJVOS-UHFFFAOYSA-N 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole Chemical compound N=1C2=CC(OC)=CC=C2NC=1S(=O)CC1=NC=C(C)C(OC)=C1C SUBDBMMJDZJVOS-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 101710127489 Chlorophyll a-b binding protein of LHCII type 1 Proteins 0.000 description 1
- 101710184917 Chlorophyll a-b binding protein of LHCII type I, chloroplastic Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 150000001412 amines Chemical class 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
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- 208000021302 gastroesophageal reflux disease Diseases 0.000 description 1
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- 229960001340 histamine Drugs 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
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- 150000007529 inorganic bases Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 229960000381 omeprazole Drugs 0.000 description 1
- 208000000689 peptic esophagitis Diseases 0.000 description 1
- 230000003285 pharmacodynamic effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
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- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/46—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with hetero atoms directly attached to the ring nitrogen atom
- C07D207/48—Sulfur atoms
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrrole Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
本发明在现有的基础上,提供了一种1‑(5‑(2‑氟苯基)‑1‑3‑(3‑甲氧丙氧基)苯磺酰氯)‑1H‑吡咯‑3‑基)‑N‑甲基胺的制备方法,由3‑(3‑甲氧基丙氧基)苯磺酰氯经过磺酰胺化、还原胺化等反应步骤得到1‑(5‑(2‑氟苯基)‑1‑3‑(3‑甲氧丙氧基)苯磺酰氯)‑1H‑吡咯‑3‑基)‑N‑甲基胺。该制备方法反应周期短,避免高毒性试剂,简化处理操作。是一种大规模、高效率、低成本得到1‑(5‑(2‑氟苯基)‑1‑3‑(3‑甲氧丙氧基)苯磺酰氯)‑1H‑吡咯‑3‑基)‑N‑甲基胺的制备方法。
Description
技术领域
本发明涉及新化学实体1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的制备方法。
背景技术
自1988年以来,以奥美拉唑为代表的质子泵抑制剂通过抑制胃酸分泌以治疗消化性溃疡、反流性食管炎和卓-艾综合症等在临床上得到广泛应用。长期的临床应用发现,现有质子泵抑制剂在药代动力学、药效学方面还有局限性。如:给药时间对药效的影响;夜间酸突破起效慢;酸性条件下不稳定(需要配制成肠制剂);对CYP450酶的依赖性(导致个体差异显著)等。
钾竞争性酸阻滞剂(Potassium-Competitive Acid Blockers,P-CABs)通过直接、可逆性的过程竞争性地抑制H+/K+-ATP酶中的K+而产生作用。与传统质子泵抑制剂相比,P-CABs具有亲脂性、弱碱性、解离常数高和在低pH条件下稳定的特点。在酸性环境下,P-CABs以离子化形式与H+/K+-ATP酶结合,阻止H+运送及酸分泌到胃腔中,迅速升高胃中pH值。动物实验和临床研究表明:P-CABs具备起效迅速,在1小时内就能达到最大治疗效果;血药浓度与口服给药剂量线性相关,比较容易达到最佳抑酸效果的优势。
化合物1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺(CN2015094255)在体外显示较高的H+/K+-ATP酶抑制活性,在组胺诱导的大鼠胃酸分泌模型中显示较好的药效;此外,在亚急毒研究中,1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺显示优异的安全性。为对化合物进行进一步研究,需要大规模制备1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺。本研究公开了一种1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的制备方法,该制备方法具有后处理简单,所得化合物纯度高的优点。
发明内容
本发明提供了一种新化学实体1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的制备方法。如下所示的反应路线,步骤(1)、(2)的反应及后处理简单,所得产品HPLC纯度>95%。
本发明所采用的技术方案如下:
一种由如化合物1所示3-(3-甲氧基丙氧基)苯磺酰氯制备如化合物3所示1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的制备方法;
制备方法包含下述步骤:
(1)在质子性或非质子性有机溶剂下,-40℃-50℃下,碱性环境,化合物1与化合物1-1于四氢呋喃溶剂中反应得到化合物2;
(2)在有机溶剂下,-20℃-50℃下,还原剂存在条件下,化合物2在经还原胺化生成化合物3;
如上所述的制备方法,所述步骤(1)的碱性条件为有机碱或无机碱,优选NaH,反应时间小于0.5h,精制方法为醇类搅拌析出固体,得到高纯度的化合物2,HPLC纯度>98%。
如上所述的制备方法,所述步骤(2)的反应溶剂为质子性或非质子性有机溶剂,优选甲醇,还原剂优选三乙酰氧基硼氢化钠。
附图说明
图1:本发明实施例所得1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的HPLC谱图。
图2:本发明实施例所得1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的质谱图。
图3:本发明实施例所得1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的核磁氢谱图。
具体实施方式
下面用实施例来进一步说明本发明,但本发明并不受其限制。
实施例1:5-(2-氟苯基)-1-((3-(3-甲氧丙氧基)苯磺酰基)-1H-吡咯-3-甲醛(化合物2)的制备
在10L反应瓶中,将60%NaH (300g,7.62mol)加到1-1(480g, 2.54mol)的THF (200ml)溶液中,-30℃搅拌25 min,滴加化合物1(800g, 3.06mol),-30℃下搅拌10 min.反应液倒入5L冰水中并用乙酸乙酯萃取(2.5Lx3).合并有机相干燥,浓缩,加入1.5乙醇搅拌1h,抽滤,,真空干燥得淡黄色固体700g(收率66%)。
实施例2:5-(2-氟苯基)-1-((3-(3-甲氧丙氧基)苯磺酰基)-1H-吡咯-3-甲醛(化合物2)的制备
在2L反应瓶中,将化合物1-1 (95g,0.5mol)溶于DMF (1000ml)中,加入叔丁醇钠(96g,1mol),搅拌25 min,滴加化合物1(158g, 0.6mol),25℃下搅拌1小时.反应液冷却至室温,抽滤,减压浓缩至干,柱层析得淡黄色固体80g(收率38.2%)。
实施例3:5-(2-氟苯基)-1-((3-(3-甲氧丙氧基)苯磺酰基)-1H-吡咯-3-甲醛(化合物2)的制备
在2L反应瓶中,将化合物1-1 (95g,0.5mol)溶于乙腈 (1000ml)中,加入N、N-二异丙基乙胺(97g,0.75mol),常温搅拌20 min,滴加化合物1(158g, 0.6mol),常温搅拌1小时.反应液冷却后减压浓缩至干,柱层析得淡黄色固体68g(收率32.4%)。
实施例4:5-(2-氟苯基)-1-((3-(3-甲氧丙氧基)苯磺酰基)-1H-吡咯-3-甲醛(化合物2)的制备
在2L反应瓶中,将化合物1-1 (95g,0.5mol)溶于二氯甲烷 (1000ml)中,加入三乙胺(100g,1mol),常温搅拌20 min,滴加化合物1(158g, 0.6mol),常温搅拌1小时.反应液冷却后减压浓缩至干,柱层析得淡黄色固体75g(收率35.8%)。
实施例5:1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺(化合物3)的制备
在10L反应瓶中,将4(700 g, 1.68mol),33%甲胺甲醇溶液(630g,6.71mol)溶于3.5L甲醇中,常温搅拌0.5h。冷却至0℃,加入三乙酰氧基硼氢化钠 (882g,4.20 mol),常温搅拌2h。加7L水淬灭,用乙酸乙酯萃取三次(7Lx3)萃取。合并有机相,减压浓缩至干,加入12L水溶解,乙酸乙酯洗涤四次(2.5L+1.5L+1.5L+1L),水相用2NNaOH调PH至9,二氯甲烷萃取三次(2.5Lx3),合并有机相,水洗四次(2.5Lx4),无水硫酸钠干燥,减压浓缩至干,得淡黄色油状物640g(收率88.2%)。
MS(+1):433
1HNMR:δ(ppm,DMSO),12.37 (s,H,COOH),6.99-7.71 (m,11H,Ar-H),4.60 (t,2H,CH2),4.60 (t,2H,-OCH2),4.20 (t,2H,-OCH2),1.39 (q,3H,-CH3),1.51 (q,3H,-CH3)。
实施例6:1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺(化合物3)的制备
在2L反应瓶中,将化合物2(208g, 0.5mol),33%甲胺甲醇溶液(188g,2mol),冰醋酸(36g,0.6mol)溶于1L甲醇中,常温搅拌0.5h。加入三乙酰氧基硼氢化钠 (265g, 1.25mol),常温搅拌2h。加2L水淬灭,用乙酸乙酯萃取三次(2Lx3)萃取。合并有机相,减压浓缩至干,加入3L水溶解,乙酸乙酯洗涤四次(1L+0.8L+0.5L+0.3L),水相用2NNaOH调PH至9,二氯甲烷萃取三次(1Lx3),合并有机相,水洗四次(1Lx4),无水硫酸钠干燥,减压浓缩至干,得淡黄色油状物150g(收率69.6%)。
实施例7:1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺(化合物3)的制备
在2L反应瓶中,将化合物2(208g, 0.5mol),33%甲胺甲醇溶液(188g,2mol)溶于1L甲醇中,常温搅拌0.5h。0℃下加入硼氢化钠 (57g, 1.5mol),常温搅拌2h。加2L水淬灭,用乙酸乙酯萃取三次(2Lx3)萃取。合并有机相,减压浓缩至干,加入3L水溶解,乙酸乙酯洗涤四次(1L+0.8L+0.5L+0.3L),水相用2NNaOH调PH至9,二氯甲烷萃取三次(1Lx3),合并有机相,水洗四次(1Lx4),无水硫酸钠干燥,减压浓缩至干,得淡黄色油状物165g(收率76.5%)。
实施例8:1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺(化合物3)的制备
在2L反应瓶中,将化合物2(208g, 0.5mol),33%甲胺甲醇溶液(188g,2mol)溶于1L二氯甲烷中,常温搅拌0.5h。加入三乙酰氧基硼氢化钠 (265g, 1.25mol),常温搅拌2h。加2L水淬灭,分液,有机相减压浓缩至干,加入3L水溶解,乙酸乙酯洗涤四次(1L+0.8L+0.5L+0.3L),水相用2NNaOH调PH至9,二氯甲烷萃取三次(1Lx3),合并有机相,水洗四次(1Lx4),无水硫酸钠干燥,减压浓缩至干,得淡黄色油状物138g(收率64%)。
Claims (10)
1.一种由如化合物1所示3-(3-甲氧基丙氧基)苯磺酰氯制备如化合物3所示1-(5-(2-氟苯基)-1-3-(3-甲氧丙氧基)苯磺酰氯)-1H-吡咯-3-基)-N-甲基胺的制备方法,
其特征在于,制备方法包含下述步骤:
(1)在质子性或非质子性有机溶剂下,-40℃-50℃下,碱性环境,化合物1与化合物1-1于四氢呋喃溶剂中反应得到化合物2;
(2)在有机溶剂下,-20℃-50℃下,还原剂存在条件下,化合物2在经还原胺化生成化合物3;
。
2.如权利要求1所述的制备方法,其特征在于,所述步骤(1)中所用碱为有机碱或者无机碱。
3.如权利要求1或2的制备方法,其特征在于,步骤(1)中所用碱包含三乙胺,N、N-二异丙基乙胺,三乙烯二胺(DABCO),1,8-二氮杂二环十一碳-7-烯(DBU),吡啶,乙二胺,甲胺,尿素,氢化钠,氢氧化钠,氢氧化钾,氢氧化锂,碳酸钾,碳酸钠,碳酸铯,叔丁醇钾,叔丁醇钠。
4.如权利要求1至3任一所述的制备方法,其特征在于,步骤(1)中所用碱包含氢化钠。
5.如权利要求1所述的制备方法,其特征在于:步骤(2)的反应溶剂包含质子性有机溶剂和非质子性有机溶剂。
6.如权利要求1或5所述的制备方法,其特征在于:步骤的反应溶剂包含甲醇、乙醇、丙醇、正丁醇、乙酸甲酯、乙酸乙酯、乙酸丙酯、二氯甲烷、三氯甲烷、乙醚、异丙醚、四氢呋喃、丙酮、N、N-二甲基甲酰胺、甲苯、乙腈及其混合物。
7.如权利要求1或5或6所述的制备方法,其特征在于:步骤的反应溶剂包含甲醇。
8.如权利要求1所述方法,其特征在于:步骤的还原剂包括硼氢化钠、硼氢化钾、三乙酰氧基硼氢化钠、四氢铝锂、硫代硫酸钠、氢气、亚硝酸钠、水合肼。
9.如权利要求1或8所述的制备方法,其特征在于:步骤 的还原剂包括三乙酰氧基硼氢化钠。
10.如权利要求1-9任一所述的制备方法,其特征在于:在-30℃±5℃温度下,氢化钠提供碱性环境,化合物1与化合物1-1于四氢呋喃溶剂中反应得到化合物2,化合物2在甲醇中与甲胺由三乙酰氧基硼氢化钠还原胺化生成化合物3。
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