JPH0219837B2 - - Google Patents
Info
- Publication number
- JPH0219837B2 JPH0219837B2 JP12545484A JP12545484A JPH0219837B2 JP H0219837 B2 JPH0219837 B2 JP H0219837B2 JP 12545484 A JP12545484 A JP 12545484A JP 12545484 A JP12545484 A JP 12545484A JP H0219837 B2 JPH0219837 B2 JP H0219837B2
- Authority
- JP
- Japan
- Prior art keywords
- thiophene
- sulfamoylbenzo
- hydroxy
- formula
- alkyl
- 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
Links
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 233
- 229930192474 thiophene Natural products 0.000 claims description 119
- -1 oxazolidylmethyloxy Chemical group 0.000 claims description 69
- 125000001544 thienyl group Chemical group 0.000 claims description 41
- 150000001875 compounds Chemical class 0.000 claims description 40
- 239000011734 sodium Substances 0.000 claims description 29
- 125000000217 alkyl group Chemical group 0.000 claims description 21
- 229910052739 hydrogen Inorganic materials 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 17
- 150000003839 salts Chemical class 0.000 claims description 16
- 125000001475 halogen functional group Chemical group 0.000 claims description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- 125000002947 alkylene group Chemical group 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 8
- 125000006590 (C2-C6) alkenylene group Chemical group 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- IUGYQRQAERSCNH-UHFFFAOYSA-M pivalate Chemical compound CC(C)(C)C([O-])=O IUGYQRQAERSCNH-UHFFFAOYSA-M 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- XRZYWSVMYHEQPN-UHFFFAOYSA-N 6-hydroxy-1-benzothiophene-2-sulfonamide Chemical compound C1=C(O)C=C2SC(S(=O)(=O)N)=CC2=C1 XRZYWSVMYHEQPN-UHFFFAOYSA-N 0.000 claims description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 3
- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 claims description 3
- KQNPFQTWMSNSAP-UHFFFAOYSA-M isobutyrate Chemical compound CC(C)C([O-])=O KQNPFQTWMSNSAP-UHFFFAOYSA-M 0.000 claims description 3
- JDRMYOQETPMYQX-UHFFFAOYSA-N monomethyl succinate Chemical compound COC(=O)CCC(O)=O JDRMYOQETPMYQX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019157 thiamine Nutrition 0.000 claims description 3
- KYMBYSLLVAOCFI-UHFFFAOYSA-N thiamine Chemical compound CC1=C(CCO)SCN1CC1=CN=C(C)N=C1N KYMBYSLLVAOCFI-UHFFFAOYSA-N 0.000 claims description 3
- 229960003495 thiamine Drugs 0.000 claims description 3
- 239000011721 thiamine Substances 0.000 claims 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 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 229940077388 benzenesulfonate Drugs 0.000 claims description 2
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 claims description 2
- FZFAMSAMCHXGEF-UHFFFAOYSA-N chloro formate Chemical compound ClOC=O FZFAMSAMCHXGEF-UHFFFAOYSA-N 0.000 claims description 2
- 125000002883 imidazolyl group Chemical group 0.000 claims description 2
- 125000004573 morpholin-4-yl group Chemical group N1(CCOCC1)* 0.000 claims description 2
- 125000005475 oxolanyl group Chemical group 0.000 claims description 2
- JBKPUQTUERUYQE-UHFFFAOYSA-O pralidoxime Chemical compound C[N+]1=CC=CC=C1\C=N\O JBKPUQTUERUYQE-UHFFFAOYSA-O 0.000 claims description 2
- 229960003370 pralidoxime Drugs 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- 125000004356 hydroxy functional group Chemical group O* 0.000 claims 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 2
- RAXXELZNTBOGNW-UHFFFAOYSA-O Imidazolium Chemical compound C1=C[NH+]=CN1 RAXXELZNTBOGNW-UHFFFAOYSA-O 0.000 claims 1
- QPFYXYFORQJZEC-FOCLMDBBSA-N Phenazopyridine Chemical compound NC1=NC(N)=CC=C1\N=N\C1=CC=CC=C1 QPFYXYFORQJZEC-FOCLMDBBSA-N 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 150000001768 cations Chemical class 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229940070891 pyridium Drugs 0.000 claims 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 168
- 239000000243 solution Substances 0.000 description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 104
- 239000000203 mixture Substances 0.000 description 94
- 239000007787 solid Substances 0.000 description 87
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 78
- 239000000047 product Substances 0.000 description 76
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 69
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 49
- 238000002360 preparation method Methods 0.000 description 45
- 239000002904 solvent Substances 0.000 description 45
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 41
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 36
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 31
- 239000011541 reaction mixture Substances 0.000 description 31
- 238000006243 chemical reaction Methods 0.000 description 30
- 238000003756 stirring Methods 0.000 description 30
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 29
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 29
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 28
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 28
- 238000004458 analytical method Methods 0.000 description 28
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 27
- 239000000284 extract Substances 0.000 description 27
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 26
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 26
- 238000000034 method Methods 0.000 description 26
- 238000001953 recrystallisation Methods 0.000 description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 23
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 21
- 230000002829 reductive effect Effects 0.000 description 21
- 238000010992 reflux Methods 0.000 description 20
- 239000000725 suspension Substances 0.000 description 20
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 17
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical group C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 15
- 239000010410 layer Substances 0.000 description 15
- 235000002639 sodium chloride Nutrition 0.000 description 15
- JRNVZBWKYDBUCA-UHFFFAOYSA-N N-chlorosuccinimide Chemical compound ClN1C(=O)CCC1=O JRNVZBWKYDBUCA-UHFFFAOYSA-N 0.000 description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 13
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 13
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 12
- 239000012267 brine Substances 0.000 description 12
- 239000003610 charcoal Substances 0.000 description 12
- 229940079593 drug Drugs 0.000 description 12
- 239000003814 drug Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 12
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 12
- 239000012043 crude product Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 235000019198 oils Nutrition 0.000 description 11
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 10
- 239000000741 silica gel Substances 0.000 description 10
- 229910002027 silica gel Inorganic materials 0.000 description 10
- UZMQSZBTFGHLAH-UHFFFAOYSA-N 1-benzothiophene-2-sulfonamide Chemical compound C1=CC=C2SC(S(=O)(=O)N)=CC2=C1 UZMQSZBTFGHLAH-UHFFFAOYSA-N 0.000 description 9
- BKBZFJRHYSCZQA-UHFFFAOYSA-N 2-methoxy-2-methylpropanoic acid Chemical compound COC(C)(C)C(O)=O BKBZFJRHYSCZQA-UHFFFAOYSA-N 0.000 description 9
- PNKUSGQVOMIXLU-UHFFFAOYSA-N Formamidine Chemical class NC=N PNKUSGQVOMIXLU-UHFFFAOYSA-N 0.000 description 9
- 229960000583 acetic acid Drugs 0.000 description 9
- 238000007792 addition Methods 0.000 description 9
- 239000000538 analytical sample Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 9
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 235000017557 sodium bicarbonate Nutrition 0.000 description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 9
- CHXZRHMQQRUVHF-UHFFFAOYSA-N 2-hex-5-en-1,3-diynyl-5-prop-1-ynylthiophene Chemical compound CC#CC1=CC=C(C#CC#CC=C)S1 CHXZRHMQQRUVHF-UHFFFAOYSA-N 0.000 description 8
- WGDVDMKNSDCNGB-UHFFFAOYSA-N 6-methoxy-1-benzothiophene Chemical compound COC1=CC=C2C=CSC2=C1 WGDVDMKNSDCNGB-UHFFFAOYSA-N 0.000 description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 238000001816 cooling Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 description 8
- 208000010412 Glaucoma Diseases 0.000 description 7
- 229940006133 antiglaucoma drug and miotics carbonic anhydrase inhibitors Drugs 0.000 description 7
- 239000003489 carbonate dehydratase inhibitor Substances 0.000 description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 239000012044 organic layer Substances 0.000 description 7
- 235000011152 sodium sulphate Nutrition 0.000 description 7
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 7
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 230000004406 elevated intraocular pressure Effects 0.000 description 6
- OAYLNYINCPYISS-UHFFFAOYSA-N ethyl acetate;hexane Chemical compound CCCCCC.CCOC(C)=O OAYLNYINCPYISS-UHFFFAOYSA-N 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 230000004410 intraocular pressure Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000000546 pharmaceutical excipient Substances 0.000 description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 6
- AOJFQRQNPXYVLM-UHFFFAOYSA-N pyridin-1-ium;chloride Chemical compound [Cl-].C1=CC=[NH+]C=C1 AOJFQRQNPXYVLM-UHFFFAOYSA-N 0.000 description 6
- 239000012258 stirred mixture Substances 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- JRTUPGWOWBPJAF-UHFFFAOYSA-N 3-hydroxy-1-benzothiophene-2-sulfonamide Chemical compound C1=CC=C2C(O)=C(S(=O)(=O)N)SC2=C1 JRTUPGWOWBPJAF-UHFFFAOYSA-N 0.000 description 5
- 102000003846 Carbonic anhydrases Human genes 0.000 description 5
- 108090000209 Carbonic anhydrases Proteins 0.000 description 5
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 5
- 239000007832 Na2SO4 Substances 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000969 carrier Substances 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002024 ethyl acetate extract Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000005457 ice water Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 239000008194 pharmaceutical composition Substances 0.000 description 5
- 235000011181 potassium carbonates Nutrition 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 239000012047 saturated solution Substances 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 229910000104 sodium hydride Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- WRMNZCZEMHIOCP-UHFFFAOYSA-N 2-phenylethanol Chemical compound OCCC1=CC=CC=C1 WRMNZCZEMHIOCP-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N 2-propanol Substances CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- IGYDWQWQYFXSNN-UHFFFAOYSA-N 5-hydroxy-1-benzothiophene-2-sulfonamide Chemical compound OC1=CC=C2SC(S(=O)(=O)N)=CC2=C1 IGYDWQWQYFXSNN-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 4
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 description 4
- 239000012346 acetyl chloride Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000002876 beta blocker Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 4
- WORJEOGGNQDSOE-UHFFFAOYSA-N chloroform;methanol Chemical compound OC.ClC(Cl)Cl WORJEOGGNQDSOE-UHFFFAOYSA-N 0.000 description 4
- 238000004587 chromatography analysis Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000012362 glacial acetic acid Substances 0.000 description 4
- 239000012442 inert solvent Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 235000017281 sodium acetate Nutrition 0.000 description 4
- 239000012312 sodium hydride Substances 0.000 description 4
- 229940124530 sulfonamide Drugs 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- QCHFTSOMWOSFHM-WPRPVWTQSA-N (+)-Pilocarpine Chemical compound C1OC(=O)[C@@H](CC)[C@H]1CC1=CN=CN1C QCHFTSOMWOSFHM-WPRPVWTQSA-N 0.000 description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 3
- WXRMVOSEIGZNPW-UHFFFAOYSA-N 3-amino-1-benzothiophene-2-sulfonamide Chemical compound NC=1C2=C(SC=1S(N)(=O)=O)C=CC=C2 WXRMVOSEIGZNPW-UHFFFAOYSA-N 0.000 description 3
- QMVAZEHZOPDGHA-UHFFFAOYSA-N 3-methoxybenzenethiol Chemical compound COC1=CC=CC(S)=C1 QMVAZEHZOPDGHA-UHFFFAOYSA-N 0.000 description 3
- UBAJGSNHCORLER-UHFFFAOYSA-N 5-(methoxymethyl)-1-benzothiophene-2-sulfonamide Chemical compound COCC1=CC=C2SC(S(N)(=O)=O)=CC2=C1 UBAJGSNHCORLER-UHFFFAOYSA-N 0.000 description 3
- RDSIMGKJEYNNLF-UHFFFAOYSA-N 5-bromo-1-benzothiophene Chemical compound BrC1=CC=C2SC=CC2=C1 RDSIMGKJEYNNLF-UHFFFAOYSA-N 0.000 description 3
- PNLRJPAUMHTMEL-UHFFFAOYSA-N 7-hydroxy-1-benzothiophene-2-sulfonamide Chemical compound C1=CC(O)=C2SC(S(=O)(=O)N)=CC2=C1 PNLRJPAUMHTMEL-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- QCHFTSOMWOSFHM-UHFFFAOYSA-N SJ000285536 Natural products C1OC(=O)C(CC)C1CC1=CN=CN1C QCHFTSOMWOSFHM-UHFFFAOYSA-N 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
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- 238000002560 therapeutic procedure Methods 0.000 description 1
- FCYXZQGDTGMGOE-UHFFFAOYSA-N thieno[2,3-f][1,3]benzodioxole Chemical compound C1=C2OCOC2=CC2=C1SC=C2 FCYXZQGDTGMGOE-UHFFFAOYSA-N 0.000 description 1
- PCUXEURMCAQJJX-UHFFFAOYSA-N thieno[2,3-f][1,3]benzodioxole-6-sulfonamide Chemical compound C1=C2SC(S(=O)(=O)N)=CC2=CC2=C1OCO2 PCUXEURMCAQJJX-UHFFFAOYSA-N 0.000 description 1
- RTKIYNMVFMVABJ-UHFFFAOYSA-L thimerosal Chemical compound [Na+].CC[Hg]SC1=CC=CC=C1C([O-])=O RTKIYNMVFMVABJ-UHFFFAOYSA-L 0.000 description 1
- 229940033663 thimerosal Drugs 0.000 description 1
- QSELGEUCFNFITD-UHFFFAOYSA-N thiophene-2-carboximidamide Chemical compound NC(=N)C1=CC=CS1 QSELGEUCFNFITD-UHFFFAOYSA-N 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000011200 topical administration Methods 0.000 description 1
- 239000003860 topical agent Substances 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 229960004418 trolamine Drugs 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Landscapes
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
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The present invention provides two novel methods useful for reducing elevated intraocular pressure.
- Sulfamoylbenzo[b]thiophene. More details: Structural formula: (wherein R and X are as defined below) and pharmaceutically and ophthalmologically usable salts thereof. The present invention is also particularly useful for systemic and ophthalmological applications using the novel compounds of the present invention as active ingredients in the treatment of elevated intraocular pressure when accompanied by pathological damage, such as in the disease known as glaucoma. The present invention relates to a pharmaceutical composition. Glaucoma is an eye disorder associated with elevated intraocular pressure that is too high for normal function and can result in irreversible loss of visual function. If untreated, glaucoma eventually leads to blindness. Ocular hypertension, ie, symptoms of elevated intraocular pressure without optic nerve head damage or inherent glaucomatous visual field defects, is now considered by many ophthalmologists to be an early manifestation of glaucoma. Many of the drugs used hitherto to treat glaucoma have proven to be completely unsatisfactory. Indeed, little progress has been made in the treatment of glaucoma since the introduction of pilocarpine and physostigmine. However, only recently have clinicians noticed that many beta-adrenergic blocking agents are effective in lowering intraocular pressure. While many of these drugs are effective in lowering intraocular pressure, they also have other properties, such as membrane stabilizing effects, which prevent them from being used for chronic eye disease applications. (S)-1-tert-butylamino-3, a β-adrenergic blocker
- [(4-morpholin-1,2,5-thiadiazol-3-yl)oxy]-2-propanol lowers intraocular pressure and does not have many of the undesirable side effects that are possible with pilocarpine, and furthermore does not have local anesthetic properties, for example. have been found to have advantages over many beta-adrenergic blocking agents, such as having long duration of activity and minimally tolerated doses. Pilocarpine, physostigmine, and the beta-blockers mentioned above lower intraocular pressure, but all of these drugs inhibit carbonic anhydrase and prevent the carbonic anhydrase pathway from contributing to aqueous humor production. It does not manifest its effects by doing so. Drugs called carbonic anhydrase inhibitors block or interfere with this influx pathway by inhibiting carbonic anhydrase. Currently, such carbonic anhydrase inhibitors are used to treat intraocular pressure by oral, intravenous or other systemic routes, while they inhibit carbonic anhydrase throughout the body. Has distinct drawbacks. Total destruction of the basic enzyme system is permissible only during acute episodes when intraocular pressure is alarmingly elevated or when other drugs are ineffective. Despite the desirability of directing carbonic anhydrase inhibitors only to the targeted ocular tissues;
Topically effective carbonic anhydrase inhibitors are not effective for clinical use. However, topically effective carbonic anhydrase inhibitors are available in European Patent Application No. 0070239 and
No. 0079269 and U.S. Patent Application No. 364953
It is reported in the issue. The compounds reported in the specification are 5 (and 6)-hydroxy-2-benzothiazole sulfonamides and their acyl esters. To be an effective and usable topical agent, ophthalmic carbonic anhydrase inhibitors must not only penetrate the ocular tissue to reach the site of action within the eye, but also be suitable for long-term administration. It is necessary that there be no side effects such as irritation or allergic reactions that may affect the skin. The novel compound of the present invention has the structural formula: or an ophthalmically or pharmaceutically usable salt thereof. [In the formula, X is hydrogen, halo or hydroxy, () When X is hydrogen, R is (1) A-, H-Z- or A-Z- -,
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(2)[Formula] or and Z is a -O-, e âOâR 2 â, (In the formula, X is 0-2.) h -O-R 2 -O-, or and R 1 is a straight or branched C 1-9 alkylene or C 2-6 alkenylene optionally substituted with one or more halo or hydroxy, and R 2 is substituted with hydroxy. C 1-3 alkylene which may be
C 1-5 alkyl or phenylC 1-3 alkyl. Note that the right end of the above formulas a)-j) is bonded to the benzene ring of formula (1). ); or (2) oxazolidylmethyloxy optionally substituted with oxo and/or C 1-5 alkyl;
glycidyloxy, morpholinylmethyl,
A group selected from benzyloxyethyl, oxolanyl optionally substituted with C 1-5 alkyl, and imidazolyl optionally substituted with trifluoromethyl; () When X is halo, R is hydrogen , morpholino or hydroxy; () When X is hydroxy, R is ( 2 )
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ã[Formula] or R 3 R 4 N-, in particular R 1 is C 1-18 alkylene and C 1-4 alkylene. Further, the substituent R is preferably located at the 5- or 6-position of the benzo[b]thiophene, particularly at the 6-position. Preferred compounds of the invention are: 5(or 6)-hydroxy-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2,2-dimethylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl 2-methylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-methoxycarbonylpropionate. Representative carbonic anhydrase inhibitors of the present invention include 5(or 6)-hydroxy-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)benzoate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)propionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)butyrate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2,2-dimethylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)octanoate, 5(or 6)-(2-sulhamoylbenzo[b]
thienyldodecanoate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl 4,4-dimethylcyclohexanecarboxylate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-chloro-2,2-dimethylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
4-methylbenzoate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 4-chlorobenzoate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 4-methoxybenzoate, 5(or 6)-(2-sulfamoylbenzo[b]
Thienyl 2-(4-chlorophenyl)acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-(4-ethylphenyl)propionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl 3-hydroxy-2,2-dimethylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl 4-aminobutyrate HCl, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)acrylate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)crotonate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)propionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-phenyl-2-propenoate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)cyclopentane acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) phenyl acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)cyclohexanecarboxylate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)acetate 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-carboxypropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-carboxypropionate, sodium salt, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl 2-ethoxycarbonyl acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)acetoacetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 3-aminocarbonylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) N-acetylpiperidine-4-carboxylate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) nicotinoate, 5(or 6)-(2-sulhamoylbenzo[b]
thienyl) 1-methyl-4-imidazolylacetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2-methoxybutyrate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2-methoxysuccinate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)phenyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)ethyl carbonate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl)propyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl) 1,1-dimethylethyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)n-heptyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)undecanyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)4,4-dimethylcyclohexyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl 2-chloro-1,1-dimethylethyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl) 4-methylphenyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)4-chlorophenyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)4-methylphenyl carbonate, 5(or 6)- (2-sulfamoyl-benzo[b]thienyl) 4-chlorophenyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl) 4-methoxyphenyl carbonate, 5(or 6)-( 2-sulfamoyl-benzo[b]thienyl) 4-chlorobenzyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl) 2-(4-ethylphenyl)ethyl carbonate, 5(or 6)- (2-sulfamoyl-benzo[b]thienyl)2-methylpropyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)allyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[ b] thienyl) 2-propynyl carbonate, 5 (or 6)-(2-sulfamoyl-benzo[b] thienyl) 3-phenyl-2-propenyl carbonate, 5 (or 6)-(2-sulfamoyl-benzo[b] 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)benzyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)cyclohexyl carbonate, 5(or 6)-(2-sulfamoyl-benzo[b]thienyl)cyclohexyl carbonate, 6)-(2-Sulfamoyl-benzo[b]thienyl)methyl carbonate, 5(or 6)-amino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-ethylamino-2-sulfamoylbenzo[ b] Thiophene, 5 (or 6)-diethylamino-2-sulhamoylbenzo [b] Thiophene, 5 (or 6)-[(1-methylethyl)amino]
-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[N-ethyl-N-(2-propyl)amino]-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[( N-benzyl-N-ethyl)
Amino]-2-sulfamoylbenzo[b]thiophene, 5(or 6)-cyclohexylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-cyclopentylmethylamino-
2-sulfamoylbenzo[b]thiophene, 5(or 6)-pivaloylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[(N-methyl-N-pivaloyl)amino]-2-sulfa Moylbenzo[b]thiophene, 5(or 6)-pivaloyloxycarbonylamino-2-sulfamoyl-benzo[b]thiophene, 5(or 6)-acetylamino-2-sulfamoylbenzo[b]thiophene, 5 (or 6)-butyrylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-benzoylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[(4-methylbenzoyl)amino ]-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[(4-fluorobenzoyl)amino]-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(4-methoxybenzoyl) Amino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-nicotinoylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-thienylcarbonylamino-2
-sulfamoylbenzo[b]thiophene, 5(or 6)-alanylamino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(N-ethyl-N-hydroxy)
Amino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(N-ethyl-N-methoxy)
Amino-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(1-morpholino)-2-sulfamoylbenzo[b]thiophene, 2-sulfamoylbenzo[b]thiophene-6
(or 5)-acetic acid, 2-sulfamoylbenzo[b]thiophene-6
(or 5)-propionic acid, 5(or 6)-(2-hydroxyethyl)-2-
Sulfamoylbenzo[b]thiophene, 5(or 6)-(2,3-dihydroxypropoxy)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(dioxolin-2-one-4
-ylmethoxy)-2-sulfamoylbenzo[b]
Thiophene, 5(or 6)-(5-oxazolinylmethoxy)
-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(1-methylimidazole-4-
yloxy)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-furfuryl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(2-morpholinylethyl)-
2-sulfamoylbenzo[b]thiophene, 5(or 6)-morphorinylmethyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-hydroxymethyl-2-sulfamoylbenzo[b]thiophene, 5 (or 6)-(acetyloxymethyl-2-
Sulfamoylbenzo[b]thiophene, 5(or 6)-(2-acetyloxyethyl)-
2-sulfamoylbenzo[b]thiophene, 5(or 6)-benzoyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-propionyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-propionyl-2-sulfamoylbenzo[b]thiophene, )-Butyryl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(2,2-dimethylpropionyl)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-octanoyl-2-sulfa Moylbenzo[b]thiophene, 5(or 6)-dodecanoyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(4,4-dimethylcyclohexanecarbonyl)-2-sulfamoylbenzo[b]
Thiophene, 5(or 6)-(3-chloro-2,2-dimethylpropionyl)-2-sulfamoylbenzo[b]
Thiophene, 5(or 6)-(2-methylbenzoyl)-2-
Sulfamoylbenzo[b]thiophene, 5(or 6)-(4-chlorobenzoyl)-2-
Sulfamoylbenzo[b]thiophene, 5(or 6)-(4-methoxybenzoyl)-2
-sulfamoylbenzo[b]thiophene, 5(or 6)-(4-chlorophenylacetyl)
-2-sulfamoylbenzo[b]thiophene, 5(or 6)-[3-(4-ethylphenyl)propionyl)]-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(3-hydroxy- 2,2-dimethylpropionyl)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(4-aminobutyryl)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(acryloyl)- 2-sulfamoylbenzo[b]thiophene, 5(or 6)-(crotonyl)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-propiolyl-2-sulfamoylbenzo[b]thiophene, 5( or 6)-(3-phenyl-2-propenoyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-cyclopentaneacetyl-2-
Sulfamoylbenzo[b]thiophene, 5(or 6)-phenylacetyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-cyclohexanecarbonyl-2
-Sulfamoylbenzo[b]thiophene, 5(or 6)-acetyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(3-carboxypropionyl)
-2-sulfamoylbenzo[b]thiophene, 5 (or 6)-ethoxycarbonylacetyl-
2-sulfamoylbenzo[b]thiophene, 5(or 6)-acetoacetyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(3-aminocarbonylpropionyl)-2-sulfamoylbenzo[b] ] Thiophene, 5 (or 6)-(N-acetylpiperidine-4
-carbonyl)-2-sulfamoylbenzo[b]
Thiophene, 5(or 6)-(4-imidazolyl)-2-sulfamoylbenzo[b]thiophene, 5(or 6)-pyrazinyl-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(4 -imidazolylcarbonyl)
-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(4-imidazolylsulninyl)
-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(trifluoromethylsulfonyl)-2-sulfamoylbenzo[b]thiophene, 5-[N-(tertbutoxycarbonyl)glycyloxy]-2-sulfa Moylbenzo[b]thiophene, mp168-170â (decomposed), 5-(2-hydroxyethoxy)-2-sulfamoylbenzo[b]thiophene, mp127-128â, 5-(glycyloxy-2-sulfamoylbenzo) b] Thiophene hydrochloride, mp223
~233â, 5-(N,N-dimethylcarbamoylmethoxy)
-2-sulfamoylbenzo[b]thiophene,
mp259-261â, 5-(L-prolyloxy)-2-sulfamoylbenzo[b]thiophene hydrochloride, m.
p.229~231â, 5-(2-dimethylaminoethoxy)-2-sulfamoylbenzo[b]thiophene, mp204.5~
205.5â, 5-(2-methoxyethoxy)-2-sulfamoylbenzo[b]thiophene, mp153-154â, 5-[2-(isopropoxy)ethoxymethyl]
-2-sulfamoylbenzo[b]thiophene,
mp65-69â, 5-(2-dimethylaminoethyl)-2-sulfamoylbenzo[b]thiophene, mp208-209
°C, 6-(1-triphenylmethylimidazole-
6-(1-imidazol-4-yl)-2-sulfamoylbenzo[b]thiophene hydrochloride, mp221-223°C include. 6-Methoxy-2, a novel compound and an important intermediate for many of the other novel compounds of this invention.
- Sulfamoylbenzo[b]thiophene is prepared by reacting bromoacetaldehyde diethyl acetal with at least one molar equivalent of m-methoxybenzenethiol in a suitable inert solvent, preferably acetone, at reflux temperature in the presence of a base. You can get it. After the reaction is substantially complete, the obtained 1-[(2,2-diethoxy)ethylthio]-3-
The methoxybenzene is collected, properly extracted, washed and dried. The dried product is then added slowly to at least one molar equivalent of catalytic boron trifluoride etherate in an inert solvent such as chloroform at reflux temperature until the reaction is substantially complete. Preferably the reaction is carried out under an inert atmosphere such as nitrogen. 6-methoxybenzo[b]thiophene and 4-
The mixture of methoxybenzo[b]thiophene is approximately
A 10:1 ratio is obtained upon evaporation of the solvent. The mixture is heated to a reduced temperature, preferably below -10°C, optimally -70°C.
C. with at least 1 molar equivalent of n-butyllithium in an inert solvent such as tetrahydrofuran. Next, sulfur dioxide gas is added to the reaction mixture at -10
Pass through the solution at such a rate that the temperature does not exceed 100 °C. After the reaction is complete, the solvent is removed and the product is reacted with at least one molar equivalent of N-chlorosuccinimide at a reduced temperature, generally at or below 0°C. The resulting 4- and 6-methoxybenzo[b]thiophene-2-sulfonyl chloride mixture is treated with concentrated aqueous ammonia. Next, the mixture of 4- and 6-methoxy-2-sulfamoylbenzo[b]thiophenes produced is collected and the isomers are separated by fractional crystallization. Each is further purified by reprecipitation with acid treatment from aqueous base and/or recrystallization from a suitable solvent. A novel process for preparing compounds in which R is hydroxy comprises methoxy-2-sulfuric acid at a temperature of about 200° C., preferably from about 180 to 190° C., for about 1 to 4 hours, preferably about 2 hours. The method includes treating moylbenzo[b]thiophene with at least one equimolar amount of pyridine hydrochloride until the reaction is complete. R is
ãåŒãã§ããååç©ã補é ããæ° èŠãªæ¹æ³ã¯æ¬¡ã®åå¿æ©æ§ã«ãã€ãŠè¡šããããã åŒäžR0ã¯ïŒšâR1 A novel method for preparing compounds of formula is represented by the following reaction mechanism. In the formula, R 0 is HâR 1
ãåŒãåã¯[Formula] or
ãåŒãã§
ãããX1ã¯ã¯ãããããã¢ããšãŒãã
[Formula], and X 1 is chloro, bromo, iodo,
ãåŒã ãŸãã¯ãformulaã or
ãåŒãã§ããããã容æ
ã«å©çšãåŸãåå¿ç©ã®éå°éã䜿çšããã®ããã
ããã©ãäžè¬ã«ã¯åœã¢ã«éã®ããããã·âïŒâã¹
ã«ãã¢ã€ã«ãã³ãŸãïœãããªããšã³ããã³
[Formula]. In general, equimolar amounts of hydroxy-2-sulfamoylbenzo[b]thiophene and
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æ¬çºæã®ïŒ²ã[Formula] is used. The reaction is carried out using acetone, dimethylformamide, pyridine, ethyl acetate, tetrahydrofuran, which has at least one molar equivalent of a hydrogen halide acceptor when the acylating agent is an acyl halide, or a carboxylic acid acceptor when the acylating agent is an acid anhydride. Alternatively, it may be carried out in a suitable inert solvent such as benzene or the like. Triethylamine, pyridine, etc. are used for this purpose. The reaction may be carried out in the presence or absence of a catalyst at temperatures from 0 DEG C. to the boiling point of the solvent used, but preferably at temperatures of about 15 DEG to 50 DEG C. If a catalyst is used, a 4-catalyst such as 4-dimethylaminopyridine or 4-pyrrolidinopridine
-dialkylaminopyridine is preferred. R of the present invention is
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è¡š It is best prepared by reaction with a biscarbonate having the formula. The reaction is carried out using dimethylformamide, pyridine, containing at least 1 equimolar amount of hydrogen halide acceptor.
It is carried out in a suitable solvent such as acetone, ethyl acetate, tetrahydrofuran or benzene. Bases such as triethylamine, pyridine, etc. can be used for this purpose. The reaction is carried out in the presence or absence of a catalyst at temperatures from 0°C to the boiling point of the solvent used, preferably from 15°C to
It can be carried out at a temperature of 50°C. If a catalyst is used, triethylamine or 4-dialkylaminopyridine such as 4-dimethylaminopyridine or 4-pyrrolidinopyridine is preferred. In the novel process of the present invention for producing ethers of hydroxy-2-sulfamoylbenzo[b]thiophene, the hydroxy compound is heated at about 0-35°C.
In a suitable solvent such as dimethylformamide, hexamethylphosphoramide, in the presence of an alkali metal alkoxide, preferably a base such as sodium methoxide, usually at about room temperature for about 10 to 30 hours.
"Alkyl" having R 0 -X 2 where X 2 is a halide such as chloride, bromide or iodide or other suitable leaving group such as mesylate, tosylate or benzenesulfonate. Treat with a chemical agent. Another method for the synthesis of ethers is to protect the sulfonamide group as an N,N-disubstituted formamidine, which is removed after the formation of the desired ether. Formamidine derivatives are specifically prepared by adding N to a suspension of hydroxy-2-sulhamoylbenzo[b]thiophene in an inert organic solvent such as acetonitrile for about 0.5 to 3 hours at about -10 to +35°C, preferably at room temperature. ,N
- Dimethylformamide prepared by adding dimethyl acetal. The ether is then dissolved in a solvent such as dimethyl sulfoxide, preferably potassium carbonate, etc.
They are readily prepared by treating a hydroxy compound with an "alkylating" agent, R 0 -X 2 , in the presence of an acid acceptor such as pyridine or a basic ion exchange resin. The reaction is carried out at about 25-100°C, preferably about 60°C, for about 10-36 hours, preferably about 18 hours. Then about 0.5 to 60â, preferably about 40â
The protecting group is removed from the sulfonamide by treating the compound with dilute alkali, such as 2N sodium hydroxide, for 3 hours, preferably about 1 hour.
Also, 6NHCl at about 100 DEG C. for 2 to 5 hours can be used to effect the desired deprotection. Novel compounds of the invention without substituents, i.e. R=
H and R are R 1 with fairly stable substituents such as R 1 is alkyl, cycloalkyl, cycloalkyl-alkyl, alkylcycloalkyl, alkoxyalkyl, alkenyl, R is R 0 -O- (R 0 is as described above), R is R 3 R 4 -N- (R 3
and R 4 is not hydrogen) are typically prepared by formation of a sulfonamide group on an intact benzo[b]thiophene moiety. This is 6
-Methoxy-2-sulhamoylbenz[b]thiophene is achieved by the procedure previously described for the preparation. The O-sulfate salts of the present invention are reacted with hydroxy-2-sulfamoylbenzo[b]thiophene and sulfamic acid in pyridine at elevated temperatures (about 50° to the boiling point) for about 18 to 48 hours to form the ammonium salt. , and then, if desired, by titration with a hydroxide of formula MOH to prepare other salts. Similarly, the O-phosphates of the present invention can be prepared in pyridine or similar basic solvents at about -5 to +5°C.
Time hydroxy-2-sulhamoylbenzo [b]
Produced by treating thiophene with phosphorus oxychloride, alkyl dichlorophosphate or dialkyl chlorophosphate. Example 1 6-Hydroxy-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 1-[(2,2-diethoxy)ethylthio]-3-methoxybenzene Bromoacetaldehyde diethyl acetal (16.5 ml, 0.11 mol) was added dropwise to a mixture of m-methoxybenzenethiol (15.0 ml, 0.12 mol) and K2CO3 (16.6 g, 0.12 mol) in acetone ( 150 ml). The reaction mixture was stirred for 16 hours and then filtered. The solid was washed with acetone and the combined liquid and washings were concentrated in vacuo. Dilute the residue with H2O ,
Extracted with Et2O . Et2O extract with 0.5MKOH,
Washed with H2O and brine, dried with Na2SO4 ,
filtered and concentrated in vacuo to give 1-[(2,2-diethoxy)ethylthio]-3-methoxybenzene.
Obtained 27.4 g as a dark yellow oil. 1H NMR, ÎŽ: ( CDCl3 ): 1.18 (6H, t, -
OCH 2 C H 3 ): 3.13 (2H, d, -SC H -); 3.43 -
3.73 (4H, m, -OC H 2 CH 3 ); 3.77 (3H, S, -
OCH 3 ); 4.67 (1H, t, -SCH 2 CH -); 6.60-
7.27 (4H, m, aromatic). Step B: Preparation of 6-methoxybenzo[b]thiophene 1-[( 2,2 -diethoxy) in CH2Cl2 (100 ml)
Ethylthio]-3-methoxybenzene (13.0g,
0.051 mol) in CH 2 Cl 2 at room temperature under nitrogen atmosphere.
Add dropwise to a solution of BF 3 .Et 2 O (6.7 ml, 0.054 mol) in (1000 ml). Stir the reaction mixture for 0.5 h,
Treated with aqueous NaHCO 3 and stirred until both phases were clear. Separate the two layers of CH 2 Cl and remove the aqueous layer.
Extracted with CH2Cl2 . Combined organic extracts
Dry over Na 2 SO 4 , filter, and concentrate in vacuo to give approximately 10% of 6- and 4-methoxybenzo[b]thiophene.
1 mixture was obtained as a dark brown oil, 8.68 g. Purified by vacuum distillation (bp = 65-7â at 0.3mmHg) to produce a pale yellow oil.
5.58g was obtained. Main isomer: 1HNMR , ÎŽ:
(CDCl 3 ): 3.85 (3H, S, -OCH 3 ): 6.98 (1H,
dd, J=4.5, H 5 ); 7.23 (2H, s, H 2 , H 3 );
7.35 (1H, d, J = 1.5, H 7 ); 7.68 (1H, d, J
= 4.5, H 4 ). Step C: Preparation of 6-methoxy-2-sulhamoylbenzo[b]thiophene A mixture of 6- and 4-methoxybenzo[b]thiophene (6.04 g, 37 mmol) in 40 ml of dry THF was reacted with n-butyl at -20°C. Lithium (in hexane)
27 ml of 1.64 M solution, 44 mmol). â20
After stirring for 1 hour at °C, SO gas was passed over the surface of the solution at such a rate as to maintain the internal temperature of the reaction at -10 °C. The reaction was considered complete when the temperature decreased and the reaction mixture changed from red to yellow suspension.
The solvent was evaporated in vacuo and the residue was dissolved in 75 ml of NaHCO3 saturated solution. After cooling to 0°C, N-chlorosuccinimide (6.5 g, 48 mmol) was added to 4
The mixture was added in portions over 5 minutes. A solid precipitate was collected by filtration. The aqueous liquid was extracted with ethyl acetate and the organic phase was washed with brine and dried.
Evaporation of the solvent produced an oil. Mix the oil and the first solid precipitate in a small volume of acetone and add 100 ml of acetone.
NH 4 OH in 25 ml solution. After 30 minutes the solvent was evaporated and the residue was partitioned between 100ml 1NKOH and ether (100ml). The ether layer is 1NKOH (2
Ã50 ml). The combined basic extracts were neutralized with concentrated HCl. The precipitate was extracted with ethyl acetate. The organic extract was washed with brine and dried. Evaporate the solvent to obtain a yellowish brown solid mp155-160â8.11g
I got it. This was recrystallized from dichloroethane to obtain pure 6-methoxy isomer mp 166-167°C. 1H
-NMRÎŽ(DMSO- d6 ): 7.85 (1H, dd, J=9),
7.77 (1H, S), 7.72 (2H, wide S), 7.60 (1H,
dd, J=2), 7.05 (1H, dd, J=9 and 2),
4.81 (3H, s). Calculated value for analysis C 9 H 9 NO 3 S 2 : C, 44.43; H, 3.73; N, 5.76 Measured value: C, 44.61; H, 3.75; N, 5.82 Most of the mother liquor was concentrated by recrystallization. Crystals of a second product, 4-methoxy-2-sulfamoylbenzo[b]thiophene, were formed. This substance is recrystallized for a second time to form a pure compound mp180~182â
I got it. 1H -NMRÎŽ: (DMSO- d6 ): 7.83 (1H, wide s), 7.80 (1H, S), 7.60 (1H, d), 7.44 (1H,
t), 6.95 (1H, d), 3.92 (3H, S). Calculated for analysis C 9 H 9 NO 3 S 2 : C, 44.43; H, 3.73; N, 5.76 Found: C, 44.31; H, 3.62; N, 5.73 Separation of isomers in Step C and 3,4- 1-[(2,2-diethoxy)ethylthio]-3, using essentially the procedure described in Example 1, Steps A, B, and C, except starting with methylenedioxybenzenethiol.
4-methylenedioxybenzene, 5,6-methylenedioxybenzo[b]thiophene and 5,6-methylenedioxy-2-sulfamoylbenzo[b]thiophene are produced. Step D: Preparation of 6-hydroxy-2-sulfamoylbenzo[b]thiophene 6-methoxy-2-sulfamoylbenzo[b]
Thiophene 3.6g and pyridine hydrochloride
37g of the mixture was heated at 180-19°C for 2 hours. After cooling, the solid was dissolved in 200 ml of water. The product was isolated by extraction with ethyl acetate (3x75ml). The organic extracts were washed with dilute HCl and brine and dried over Na2SO4 . Evaporation of the solvent produced 3.2 g of a brown solid. The solid was dissolved in 200 ml of acetone and treated with 1.3 g of decolorizing carbon. The solution was filtered and the solvent was evaporated to yield 2.8 g of a yellow solid. The solid was dissolved in a minimum volume of ethyl acetate and triturated with hexane.
A white solid mp211-214°C, weight 1.70g was obtained. 1 Hâ
NMRÎŽ (DMSOâd 6 ): 10.02 (1H, wide S)
7.81 (1H, d, J=9), 7.75 (1H, S), 7.71
(2H, S), 7.33 (1H, d, J=2); 6.96 (1H,
dd, J=9 and 2). Further purity is achieved by recrystallization with water or nitromethane.
mp215-216â, produced more than 99.9% of the substance. Analysis: Calculated for C8H7NO3S2 : C, 41.91; H, 3.08; N, 6.11 Measured: C, 41.87; H, 2.91; N, 6.17 Demethylation of 4 - methoxy isomer is identical occurred under conditions. One recrystallization with water gave yellow-brown needle-shaped crystals mp212-213. 1H -NARÎŽ (acetone d6 ): 9.3 (1H, broad S), 7.96 (1H, S), 7.4 (2H, m), 6.9 (2H, broad S and 1H, dd). Analysis: Calculated for C8H7NO3S2 : C, 41.91; H, 3.08; N, 6.11 Found: C, 41.84; H, 2.94; N, 6.21 m - methoxybenzenethiol used in Step A. Approximately equimolar amounts of a 2,4-dimethoxybenzenethiol, b 2,5-dimethoxybenzenethiol, c 3,4-dimethoxybenzenethiol, d 3-methyl-4-methoxybenzenethiol and e 3-methoxy-4- In Step B using substantially the procedures described in Example 1 Steps A, B, C and D, but substituting methylbenzenethiol: a 5,7-dimethoxybenzo[b]thiophene, b 4 ,7-dimethoxybenzo[b]thiophene, c 5,6-dimethoxybenzo[b]thiophene and 4,5-dimethoxybenzo[b]thiophene, d 5-methoxy-6-methylbenzo[b]thiophene and e 5-methyl -6-Methoxybenzo[b]thiophene In step C a 5,7-dimethoxy-2-sulfamoylbenzo[b]thiophene, b 4,7-dimethoxy-2-sulfamoylbenzo[b]thiophene, c 5,6 -dimethoxy-2-sulfamoylbenzo[b]thiophene and 4,5-dimethoxy-2-sulfamoylbenzo[b]thiophene d 5-methoxy-6-methyl-2-sulfamoylbenzo[b]thiophene and e 5- Methyl-6-methoxy-2-sulfamoylbenzo[b]thiophene and in step D a 5,7-dihydroxy-2-sulfamoylbenzo[b]thiophene, b 4,7-dihydroxy-2-sulfamoylbenzo[b] ] Thiophene, c 5,6-dihydroxy-2-sulfamoylbenzo[b]thiophene and 4,5-dihydroxy-2-sulfamoylbenzo[b]thiophene, d 5-hydroxy-6-methyl-2-sulfamoylbenzo [b] Thiophene and e 6-hydroxy-5-methyl-2-sulfamoylbenzo[b] Thiophene are produced. Example 2 6-(2-sulfamoylbenzo[b]thienyl)
2,2-dimethylpropionate 6-hydroxy-2-sulhamoylbenzo[b]thiophene (125 mg, 0.54 mmol) in 4 ml THF
0.16 ml of Et3N and pivalic anhydride (1.18
0.24 ml (mmol) was added. The reaction mixture was stirred at room temperature for 18 hours. The mixture was poured into NaHCO3 solution and extracted with ethyl acetate. The organic extract was washed with brine and dried (Na 2 SO 4 ). Treatment with charcoal, filtration and trituration with hexane gave the product as white crystals, mp 165-167°C. The yield was 58 mg. 1H -NMR, Ύ( CDCl3 ): 7.92 (1H, d, J=
9); 7.91 (1H, S); 7.58 (1H, d, J=1);
7.2 (1H, dd, J=9 and 2); 1.37 (9H, S). Calculated for analysis C 13 H 15 NO 4 S 2 : C, 49.82; H, 4.82; N, 4.47 Measured: C, 49.63; H, 4.86; N, 4.52 Example 3 6-(2-sulfamoylbenzo b] Thienyl)
2-Methylpropionate To a stirred solution of 2.00 g of 6-hydroxy-2-sulhamoylbenzo[b]thiophene in 20 ml of dry acetone is added 1.3 ml of Et 3 N (9.3 mmol) followed by 0.96 ml of isobutyryl chloride (8.8 mmol). was added dropwise with stirring at 0°. After 20 min the suspension was diluted with EtOAC and NaHCO3.
distributed in solution. The organic phase was washed with brine and dried (Na 2 SO 4 ). Evaporation of solvent yields white solid 2.77
I got g. Recrystallization from ethyl acetate/hexane gave 1.32 g of white crystals mp164-165°C. 1H âNMR,
ÎŽ (DMSO): 8.05 (1H, d, J=9); 7.93 (1H,
S); 7.87 (3H, m); 7.25 (1H, dd, J=9 and 2); 3.84 (1H, m); 1.23 (6H, d, J=7). Calculated for analysis C 12 H 13 NO 4 S 2 : C, 48.15; H, 4.30; N, 4.68 Measured: C, 47.99; H, 4.33; N, 4.79 Example 4 6-(2-sulfamoylbenzo b] Thienyl)
Acetate 6-hydroxy-2 in acetone (45 ml) at â5°
-benzothiophenesulfonamide (2.5g,
0.0109 mol) of triethylamine (1.2133 mol)
g, 0.01199 mol). A solution of acetyl chloride (0.9413 g, 0.01199 mol) in acetone (5 ml) was then added dropwise over 15 minutes at -5°C. 15 minutes later,
The reaction mixture was filtered to remove precipitated triethylamine hydrochloride. The liquid was evaporated in vacuo to give a slightly off-white solid. This solid was dissolved in ethyl acetate, washed with a small amount of water and saturated sodium chloride, and dried over sodium sulfate. Removal of the solvent in vacuo gave a slightly off-white solid. Yield: 2.98g, mp120~
It was 133â. Recrystallization from 1,2-dichloroethane gave the title compound as white prisms.
mp150~151â. Analysis: Calculated for C 10 H 9 NO 4 S 2 : C, 44.27; H, 3.34; N, 5.16 Found: C, 44.00; H, 3.48; N, 5.19 The acid chloride starting materials used here are Using the procedures described in Examples 2-4 above, but substituting a substantially equivalent molar amount of acid chloride,
The acyloxy-2-sulfamoylbenzo[b]thiophenes also listed in the table are prepared according to the following reaction mechanism. table
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è¡š [Formula] Propionate (product mp154~157â) cyclohexanecarboxylate cyclopentanecarboxylate octanoate 4,4-dimethylcyclohexanecarboxylate 3-chloro-2,2-dimethylpropionate benzoate nicotinate (product mp216~ 217â) 4-Methylbenzoate 4-chlorobenzoate 4-methoxybenzoate 3-phenylpropionate 4-chlorophenyl acetate 3-(4-ethylphenyl)propionate 3-hydroxy-2,2-dimethylpropionate 3-dimethyl Amino-2,2-dimethylpropionate acrylate crotonate propiolate cinnamate 3-methoxycarbonylpropionate (product mp 133-135°C) 3-ethoxycarbonylpropionate (product mp 111-113°C) N- Acetylpiperidine-4-carboxylate (product mp 170.5-172) Methoxyacetate (product mp 140-142) Succinate (1) 2-methoxy-2-methylpropionate (2) 2-thienylcarboxylate (1) The acylating agent is succinic anhydride. (2) The acylating agent is 2-methoxy-2-methylpropionic N,N-diphenylcarbamic anhydride. Example 5 5-Hydroxy-2-sulfamoylbenzo[b]thiophene Step A: 5-Methoxy-2-sulfamoylbenzo[b]thiophene 5-Methoxybenzo[b]thiophene (9.50 g, A solution of
1.6M n-butyllithium in 0.064m) -20ïœ
Addition was made over 20 minutes while maintaining the temperature at -15°C. After stirring at -20â for 1 hour, the temperature was increased to -15~
Sulfur dioxide was passed over the surface of the reaction mixture for 45 minutes while being kept at â5° C. and stirring vigorously. Ether (100ml) was added and the precipitate was collected and dried under vacuum at ambient temperature. The solid was suspended in methylene chloride (105 ml), the mixture was cooled to 0°C, and N-
Chlorosuccinimide (18.55g, 0.064m) 10
Added over a period of minutes. After stirring for 2 hours at ambient temperature, the mixture was filtered and the solids were washed with methylene chloride. The combined solution and washing solution were heated to 30â under reduced pressure.
Concentrated below. Dissolve the solid residue in acetone (105ml)
The solution was cooled to 0°C and concentrated ammonium hydroxide (50ml) was added over 10 minutes.
After stirring for 30 minutes at ambient temperature, the solvent was evaporated under reduced pressure. The residue was dissolved in 0.5M potassium hydroxide solution (370
ml), filtered and acidified with 6NHCl. The product was collected and dried at 70 °C under vacuum at 125 °C.
Produced 12.11 g (86%) of material melting at ~127°C. After recrystallization with 1,2-dichloroethane and treatment with decolorizing charcoal, the analytical sample melted at 125-126°C. Calculated for analysis C 9 H 9 NO 3 S 2 : C, 44.43; H, 3.73; N, 5.76 Found: C, 44.67; H, 3.77; N, 5.97 Step B: 5-Hydroxy-2-sulhamoylbenzo [b] Preparation of thiophene Pyridine hydrochloride (50 g) was heated to 190°C, and 5-methoxy-2-sulhamoylbenzo[b]thiophene (12.78 g, 0.053 m) was added to the melt. The mixture was stirred at 190°C for 2 hours, then poured onto ice and extracted with ethyl acetate (3x200ml).
The combined extracts were washed with 3NHCl, dried over Na 2 SO 4 and filtered through a pad of filter and charcoal. Concentrate the liquid under reduced pressure and crystallize the residue with nitromethane to obtain a product that melts at 197-198.5°C.
Produced 7.83g (64%). After recrystallization with nitromethane and treatment with decolorizing charcoal, the analytical sample is 192.5 ~
It melted at 193.5°C. Calculated for analysis C 8 H 7 NO 3 S 2 : C, 41.91; H, 3.08; N, 6.11 Measured: C, 42.08 and 42.11; H, 3.11 and
3.10; N, 6.38 and 6.12 Example 6 5-Acetoxy-2-sulfamoylbenzo[b]thiophene 5-Hydroxy-2-sulfamoylbenzo[b]thiophene (4.00 g,
A solution of 0.017 m) was cooled to -5 °C, triethylamine (1.92 g, 0.019 m) was added, then -5 to
A solution of acetyl chloride (1.49g, 0.019m) in acetone (10ml) was added dropwise over 15 minutes while maintaining the temperature at -3°C. After stirring for 21/4 hours at -5°C, the mixture was filtered and the solids were washed with acetone. The combined liquid and washings were concentrated under reduced pressure and the residue was dissolved in ethyl acetate (7.5ml), washed with water (2x20ml), dried and evaporated under reduced pressure. The residue was crystallized from 1,2-dichloroethane to yield 4.01 g (87%) of product melting at 129-132°C. After recrystallization with 1,2-dichloroethane, the analytical sample melted at 131.5-133°C. Calculated values for analysis C 10 H 9 NO 4 S 2 : C, 44.27; H, 3.34; N, 5.16 Measured values: C, 44.53; H, 3.28; N, 4.99 The acetyl chloride used here is listed in the table. The acyloxy-
2-Sulfamoylbenzo[b]thiophene is produced according to the following reaction mechanism. table
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[Formula] 2,2-dimethylpropionate (product m.
p.144-146â) 3-methoxycarbonylpropionate (product mp128-131â) 3-ethoxycarbonylpropionate propionate cyclohexanecarboxylate cyclopentanecarboxylate octanoate 4,4-dimethylcyclohexanecarboxylate 3-chloro-2,2-dimethylpropionate benzoate nicotinate 4-methylbenzoate 4-chlorobenzoate 4-methoxybenzoate 3-phenylpropionate 4-chlorophenyl acetate 3-(4-ethylphenyl)propionate 3-hydroxy -2,2-dimethylpropionate 3-dimethylamino-2,2-dimethylpropionate acrylate crotonate propiolate cinnamate N-acetylpiperidine-4-carboxylate methoxyacetate succinate (1) 2-methoxy -2-Methylpropionate (2) 2-thienylcarboxylate (1) The acylating agent is succinic anhydride. (2) The acylating agent is 2-methoxy-2-methylpropionic acid N,N-diphenylcarbamic anhydride. Example 7 5-Bromo-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 4-bromophenyl-2,2-diethoxyethyl sulfide p-bromothiophenol (117.2 g, 0.62 g in acetone (500 ml) mole), K 2 CO 3 (171.4 g, 1.24
Bromoacetaldehyde ethyl acetal (90 ml, d=1.31, 0.6 mol) was added dropwise under N 2 to a solution of 1.0 mol). After stirring overnight at room temperature, the reaction mixture was filtered and the liquid was reconcentrated to dryness to produce a quantitative yield of product. The material was used directly in the next step without further purification. Step B: Preparation of 5-bromobenzo[b]thiophene A mixture of polyphosphoric acid (300 g) and chlorobenzene (300 ml) heated at 135 °C under N 2 was heated to 10 ml under N 2
Acetal from Step A (61 g,
0.2 mol) was added. After 0.5 h, the hot mixture was poured onto ice- H2O and the resulting solution was extracted 4X with CHCl3 . The organic extracts were washed with H2O , saturated Na2CO3 , dried, filtered and concentrated to dryness. Distillation of the residue yielded 25.5 g (60%) of product, bp106
â. Step C: Preparation of 5-bromo-2-sulfamoylbenzo[b]thiophene As described in Example 1 Step C, except that 6-methoxybenzo[b]thiophene was replaced with an equimolar amount of 5-bromobenzo[b]thiophene. The title compound was prepared in 17% yield after acetonitrile recrystallization using substantially the same procedure as mp211-213.
â. Example 8 7-methoxy-2-sulhamoylbenzo [b]
Thiophene 7 was prepared in sequence using essentially the procedure described in Example 7, Steps A, B, and C, except that the 4-bromothiophenol used in Step A was replaced with an equimolar amount of 2-methoxythiophenol. -Methoxyphenyl-2,2-diethoxyethyl sulfide (characteristics not measured) in quantitative yield 7-methoxybenzo[b]thiophene (bp 0.5 mm 100-110â) in 42% yield , and 7-methoxy-2-sulfamoylbenzo[b]thiophene (mp195-197°C)
is produced with a yield of 55%. Example 9 7-Hydroxy-2-sulfamoylbenzo[b]thiophene 6-methoxy-2-sulfamoylbenzo[b]
7-Hydroxy-2-sulfamoyl was prepared using essentially the procedure described in Example 1 (Step D), except that thiophene was replaced with an equimolar amount of 7-methoxy-2-sulfamoylbenzo[b]thiophene. Benzo[b]thiophene (yield 55%), mp196~
Produced 198â. Acetyl chloride or an approximately equimolar amount of the acid chloride listed in the table is used as the acylating agent, and 5-hydroxy-2-sulhamoylbenzo[b]thiophene is used in an equimolar amount of 76 hydroxy-2
-sulfamoylbenzo[b]thiophene or 4
The acyloxy-2-sulfamoylbenzo[b]thiophenes listed in the table were prepared using substantially the same procedure as described in Example 6, but substituting -hydroxy-2-sulfamoylbenzo[b]thiophene. It is produced according to the following reaction mechanism.
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A solution of triethylamine (1.21 mol) at â5°
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isobutyl chloroformate (1.64 g,
A solution of 0.012 mol) was added dropwise over 15 minutes at -5°. After 15 minutes, the reaction mixture was poured into water (300ml).
The resulting semi-solid was extracted with ethyl acetate, washed with saturated sodium chloride solution and dried over sodium sulfate. Removal of the solvent in vacuo gave a solid. The yield was 3.59 g, mp 109-123°C. Recrystallization from butyl chloride gave the pure title compound, mp 129-130°. Calculated for analysis C 13 H 15 NO 5 S 2 : C, 47.40; H, 4.59; N, 4.25 Measured: C, 47.65; H, 4.76; N, 4.11 6-Hydroxy-2-sulhamoyl used here Replacement of benzo[b]thiophene with equimolar amounts of 4.5 or 7-hydroxy-2-sulhamoylbenzo[b]thiophene, as in Example 10, as well as with isobutyl chloroformate or the chloroformates listed in the table. using substantially the procedures described in Example 10,
The 4,5,6 or 7(2-sulfamoylbenzo[b]thienyl) carbonates listed in the table are prepared according to the following reaction scheme.
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[Table] Example 11 (S)-6-[3-(1,1-dimethylethyl)
Oxazolidin-2-one-5-yl]-methoxy-2-sulfamoylbenzo[b]thiophene Step A: N,N-dimethyl-N'-(6-hydroxy-2-sulfamoylbenzo[b]thiophene)form Preparation of Amidine A partial suspension of 6-hydroxy-2-sulhamoylbenzo[b]thiophene (2.29 g, 10 mmol) in acetonitrile (10 ml) under a nitrogen atmosphere was treated with N,N-dimethylformamide dimethyl acetal in acetonitrile (10 ml). (1.6ml, 12mmol)
solution was added dropwise. After 1/2 hour, water was added and the product was extracted into ethyl acetate and dried (Na 2 SO 4 ).
and evaporated to dryness. After crystallization of the residue with heated 1,2-dichloroethane and treatment with charcoal, the product
Obtained 2.1g, mp 164-166°C. Step B: (S)-N,N-dimethyl-N'-[[3-
(1,1-dimethylethyl)oxazolidin-2-one-5-yl]methoxy-
Preparation of 2-sulfamoylbenzo[b]thiophene]formamidine (S)-3-(1,1-dimethylethyl)-5-(hydroxymethyl)oxazolidinone mesylate (4.26 g, 17 mmol) in DMSO (15 ml) A solution of potassium carbonate (2.8 g, 20 mmol) in DMSO (15 ml) was warmed at 70 °C under a nitrogen atmosphere.
N,N-dimethyl-N'-(6-hydroxy-2
-sulfamoylbenzo[b]thiophene)formamidine (4.26 g, 15 mmol) was added dropwise and stirring continued at 70<0>C for 20-24 hours. The reaction mixture was poured into ice water, extracted with ethyl acetate/acetonitrile, dried (Na 2 SO 4 ) and concentrated to a small volume. The crystalline product was collected (weight; 5.5 g) and recrystallized twice from ethyl acetate, mp 121-25°C. Analyzed, calculated for C19H25N3O5S2 : N, 9.56; C, 51.92; H , 5.73 Measured: N , 9.58; C, 51.55; H, 5.76 Step C: ( S )-6- Preparation of [3-(1,1-dimethylethyl)oxazolidin-2-one-5-yl]methoxy-2-sulfamoylbenzo[b]thiophene Product from Step B (5.4 g, 14.5 mmol)
A suspension of was heated at 100 °C in 6NHCl (75 ml) for 3-4 h, cooled with ice, extracted with ethyl acetate, dried (Na 2 SO 4 ) and evaporated to give 5.8 g of crude product. Ta.
The mixture was dissolved in hot 1,2-dichloroethane, filtered hot to remove the dealkylated product (1.3g) and evaporated. 1.5 to 6 residue
Chromatographed on silica gel with gradient elution of % methanol/chloroform (V/V). The purified product was recrystallized from 1,2-dichloroethane to obtain 3.2 g of product, mp 147-149°C. Analyzed, calculated for C16H20N2O5S2 : N, 7.29; C, 49.68; H, 5.24 Measured: N, 7.36; C, 50.09; H, 5.37 4 instead of 6 - hydroxy analog (S)-4,5 using Example 11, steps A, B and C, but using ,5- or 7-hydroxy-2-sulfamoylbenzo[b]thiophene, respectively.
- or 7-[3-(1,1-dimethylethyl)oxazolidin-2-one-5-yl]methoxy-
2-Sulfamoylbenzo[b]thiophene is produced. Example 12 ( S )-6-[(oxazolidin-2-one-5
-yl)methoxy]-2-sulfamoylbenzo[b]thiophene The crude by-product isolated in Step C of Example 11 (1.3
g) was dissolved in hot ethyl acetate/acetonitrile, treated with charcoal and the solvent was removed by boiling until crystallization began. Collected 0.83g, mp198~
199â. Analysis, calculated values for C 12 H 12 N 2 O 5 S 2 : N, 8.53; C, 43.89; H, 3.68 Measured values: N, 8.58; C, 44.04; H, 3.63 Similarly (S)-4,5 Alternatively, 7-[(oxazolidin-2-one-5-yl)methoxy]-2-sulfamoylbenzo[b]thiophene is produced. Example 13 ( S )-6-[3-(1,1-dimethylethylamino)-2-hydroxy-propoxy-2-
Sulfamoylbenzo[b]thiophene hydrochloride in water containing 40% NaOH (W/V) (5 ml)/
( S )-6-[3-(1,1-dimethylethyl)oxazolidin-2-one-5-yl]methoxy-2 in a solution of ethanol (2:1 (V/V), 20 ml)
-Sulhamoylbenzo[b]thiophene (2.47
g, 6.4 mmol) was heated at 100° C. for 3 days. The reaction mixture was cooled and acidified with hydrochloric acid,
Insoluble materials were removed by filtration and evaporated to dryness. The residue was extracted repeatedly with hot ethanol, filtered and the ethanolic extracts were evaporated. The resulting residue was triturated with ethanol/diethyl ether to obtain a solid product (weight 1.95 g). After several recrystallizations of dissolving the solid in hot methanol, then adding ethanol and boiling off the solvent until crystallization begins, 1.2 g of product, mp 266-268° C., was obtained. Analysis, calculated values for C 15 H 22 N 2 O 4 S 2 HCl.0.4NaCl.0.4H 2 O: C, 42.37; N, 6.59; H, 5.57; Cl,
11.67 Measured value: C, 42.33; N, 6.62; H, 5.57; Cl,
11.42 Similarly, (S)-4,5 or 7-[3-(1,
1-dimethylethylamino)-2-hydroxypropoxy]-2-sulfamoylbenzo[b]thiophene is produced. Example 14 6-(2-ketopropoxy)-2-sulfamoylbenzo[b]thiophene Step A: N,N-dimethyl-N'-[6-(2-ketopropoxy)-2-sulfamoylbenzo[b] ] Preparation of thiopheneformamidine Anhydrous potassium carbonate (2.0 g) and N,N-dimethyl-N'-[6
To a stirred mixture of -hydroxy-2-sulfamoylbenzo[b]thiophene]formamidine (2.90g) was added dropwise chloroacetone (1.2ml) at 25°C.
After 24 hours, the reaction mixture was diluted with water (200 ml) and
The resulting solid was collected and dried, 3.02 g, m.
p.150-153â. Step B: Preparation of 6-(2-ketopropoxy)-2-sulfamoylbenzo[b]thiophene The product from Step A was heated to reflux for 0.5 h with a mixture of methanol (50 ml) and 6N hydrochloric acid (50 ml). . Dilute the cooled solution with water (300ml) and
Cooled. The precipitated solid was collected, washed with water and dried to yield 2.25 g, mp 181-185°C. A sample with mp 184-187° was obtained by recrystallization with acetonitrile. Analysis, calculated values for C 11 H 11 NO 4 S 2 : C, 46.30; H, 3.89; N, 4.91 Measured values: C, 46.48; H, 3.87; -ketopropoxy)-2-sulfamoylbenzo[b]thiophene is produced. Example 15 6-[(ethoxycarbonyl)methoxy]-2-
Sulfamoylbenzo[b]thiophene Ethyl bromoacetate (1.2
ml, 11 mmol) and 6-hydroxy-2-sulhamoylbenzo[b]thiophene (2.29 g, 10
Potassium bicarbonate (1.0 g, 10 mmol) and potassium carbonate (0.13 mmol) in water (7 ml), potassium bicarbonate (1.0 g, 10 mmol)
g, 1 mmol) was added dropwise. The mixture was stirred for 1-2 days and then diluted with water. The precipitated product was collected, dissolved in ethyl acetate, dried (Na 2 SO 4 ) and evaporated to dryness. The residue was recrystallized from hot ethyl acetate and the solvent was boiled off until crystallization began to yield 1.2 g of product, mp 182-184°C. Analysis, calculated value for C 12 H 13 NO 5 S 2 : C, 45.70; H, 4.15; N, 4.44 Measured value: C, 46.11; H, 4.32; N, 4.39 Repeating the operation of Example 15, 4. 5 or 7
-[(Ethoxycarbonyl)methoxy]-2-sulfamoylbenzo[b]thiophene is also produced.
The 5-isomer has a mp of 167.5-168°C. Example 16 6-[(carboxy)methoxy]-2-sulfamoylbenzo[b]thiophene Solid 6-[(ethoxycarbonyl)methoxy]
-2-Sulfamoylbenzo[b]thiophene (1.6 g, 5 mmol) was added to 10% NaOH (40 ml) and stirred at room temperature for 4-6 hours. The solution was acidified, extracted with ethyl acetate, dried (Na 2 SO 4 ) and
Evaporated. The residue was dissolved in hot ethyl acetate and
filtered and evaporated until crystallization begins to yield a product of 0.94
g, mp 205-208° were obtained. Analysis, calculated value for C 10 H 9 NO 5 S 2 : N, 4.88; C, 41.80; H, 3.16 Measured value: N, 4.92; C, 42.07; H, 3.24 By similar operation, 4, 5 or 7-[(carboxy)methoxy]-2-sulfamoylbenzo[b]thiophene is produced. Example 17 6-[3-carboxypropoxy]-2-sulfamoylbenzo[b]thiophene Step A: N,N-dimethyl-N'-[6-(3-(ethoxycarbonyl)propoxy)-2-
Production of sulfamoylbenzo[b]thiopheneformamidine Ethyl-4-bromobutyrate (2.15g, 11.0
N,N-dimethyl-N'-[6-hydroxy-2-
Add dropwise to a stirred solution of sulfamoylbenzo[b]thiopheneformamidine (2.84 g, 10.0 mmol) and potassium carbonate (2.07 g, 15.0 mmol). The reaction temperature was held at 70°C for 18 hours. The reaction mixture was cooled, poured into water (100ml) and extracted with ethyl acetate (3x150ml). The combined ethyl acetate extracts were washed with water (3 x 50 ml), brine (2 x 25 ml) and dried (Na 2 SO 4 ). Ethyl acetate was removed under vacuum to produce an oil (2.85g). Step B: 6-(3-carboxypropoxy)-2-
Production of sulfamoylbenzo[b]thiophene N,N-dimethyl-N'-[6-(3-(ethoxycarbonyl)propoxy)-2-sulfamoylbenzo[b]thiophene]formamidine (2.85
g, 7.2 mmol) was suspended in hydrochloric acid (25.0 ml, 6.0 N) and warmed to 70° C. for 6 hours. The reaction was cooled and the solid formed was collected by vacuum filtration. The solid was dissolved in ethyl acetate-methanol (160 ml, 3:1 (V/V)).
and filtered over charcoal. The solvent was removed under vacuum and the remaining solid was dried under vacuum to yield a white solid (2.0 g, 6.3 mmol), mp 186-187°C. Analysis, calculated value: C, 45.70; H, 4.15; N, 4.44 Measured value: C, 45.78; H, 4.14; N, 4.31 Similarly, 4,5 or 7-(3-carboxypropoxy)-2-sulfamoyl Benzo[b]thiophene is produced. Example 18 6-[2,3-Epoxypropoxy]-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 6-allyloxy-2-sulfamoylbenzo[b]thiophene Aryl bromide (2.07 ml, 24.0 mmol ) in dimethyl sulfoxide (15.0 ml)
2-Sulfamoylbenzo[b]thiophene (5.0
g, 22.0 mmol) dropwise. A solution of water (7.5 ml) K 2 CO 3 (3.34 g, 24.0 mmol) was added dropwise to the reaction solution at 25°C. After 24 hours, the reaction mixture was diluted with water (50ml). The resulting solid was collected and dried, 3.75 g (13.9 mmol), mp101
~102â. Step B: Preparation of 6-[3(2)-hydroxy-2(3)-bromopropoxy]-2-sulfamoylbenzo[b]thiophene 6-[allyloxy]-2-sulfamoylbenzo[b]thiophene (5.0 g, 18.6 mmol)
Added to a solution of water (5.0 ml) in DMSO (30 ml) with stirring. The solution was cooled to 0° C. and N-bromosuccinimide (3.5 g, 19.5 mmol) was added. The reaction mixture was allowed to warm to room temperature and after 2.0 h,
Pour into water (150g). The aqueous mixture was extracted with ethyl acetate (3 x 100 ml) and the combined extracts were washed with water (2 x 25 ml), brine (2 x 25 ml) and dried (Na 2 SO 4 ). Ethyl acetate was removed under vacuum to give a red oil (5.5 g, 15.0 mmol). Step C: 6-[2,3-epoxypropoxy]-2
-Preparation of sulfamoylbenzo[b]thiophene 6-[3(2)-hydroxy-2(3)-bromopropoxy]-2-sulfamoylbenzo[b]thiophene (11.1 g, 30.2 mmol) was mixed with methanol (25
ml). A solution of potassium hydroxide (3.9 g, 60.4 mmol) in methanol (20 ml) was added dropwise. After 2.5 hours, the reaction mixture was poured into water (100ml). The mixture was acidified with concentrated hydrochloric acid. The aqueous mixture was extracted with ethyl acetate (3 x 100 ml) and the combined ethyl acetate extracts were mixed with water (2 x 100 ml) and brine (2 x 100 ml).
x 100 ml) and dried (Na 2 SO 4 ). Ether was removed under vacuum. The remaining solid was purified using medium pressure chromatography (55% hexane/45% ethyl acetate, V/V), mp148-149
â. Analysis, calculated value: C 11 H 11 NO 4 S 2 : C, 46.30; H, 3.89; N, 4.91 Measured value: C, 46.43; C, 3.90; N, 4.93 Using the procedure of Example 18, 4. 5 or 7-
(2,3-epoxyperopoxy)-2-sulfamoylbenzo[b]thiophene is also produced. Example 19 6-[3-Methoxy-2-hydroxypropoxy]-2-sulfamoylbenzo[b]thiophene One drop of concentrated sulfuric acid was added to 6-[2,
3-Epoxypropoxy]-2-sulfamoylbenzo[b]thiophene (2.0 g, 7.0 mmol) was added dropwise. After 18 hours, methanol was removed under vacuum. The residue was dissolved in ethyl acetate (200ml), washed with water (2x25ml), brine (2x25ml) and dried (Na 2 SO 4 ). Ethyl acetate was removed under vacuum. The remaining white solid was recrystallized from boiling ethyl acetate, 1.5 g, mp 128-129°C. Analysis, calculated value: C 12 H 15 NO 5 S 2 : C, 45.41; H, 4.76; N, 4.41 Measured value: C, 45.38; C, 4.76; N, 4.60 Similarly, 4, 5 or 7-( 3-Methoxy-2-hydroxypropoxy)-2-sulfamoylbenzo[b]thiophene is produced. Example 20 6-(2,3-dihydroxypropoxy)-2-
Sulfamoylbenzo[b]thiophene Step A: N,N-dimethyl-N'-[[6-(2,2
-dimethyl-1,3-dioxolane-3
-yl)methoxy]-2-sulfamoylbenzo[b]thiophene]formamidine Production of N,N-dimethyl-N'-[6-hydroxy-2
- Sulfamoylbenzo[b]thiophene]formamidine (5.0 g, 17.6 mmol) in DMSO (25
ml) of K 2 CO 3 (3.64 g, 26.4 mmol). 2,2-dimethyl-1,3-dioxolane-4-methanol (4.07 g, 19.3 mmol) was added dropwise to the reaction. The reaction temperature was held at 70°C for 18 hours. The cooled reaction was poured into water (100ml) and extracted with ethyl acetate containing a small amount of methanol (4 x 25ml). The combined ethyl acetate extracts were washed with water (4 x 25 ml), brine (2 x 25 ml) and dried (MgSO 4 ). Ethyl acetate was removed under vacuum to produce a tan solid (6.0 g). Step B: 6-(2,3-dihydroxypropoxy)
-2-Sulfamoylbenzo[b]thiophene N,N-dimethyl-N'-[[6-(2,2-dimethyl-1,3-dioxolan-3-yl)-methoxy]-2-sulfamoylbenzo[ b) Thiophene] formamidine (6.0 g, 15.0 mmol)
6.0NHCl (25ml) was added and the mixture was warmed to 70°C for 18 hours. The cooled reaction solution was diluted with ethyl acetate (4x
150ml), and the combined extract was poured into water (1 x 50ml).
ml), brine (2 x 50 ml) and dried ( MgSO4 ). Remove ethyl acetate under vacuum,
A white solid formed. Recrystallize with nitromethane
Obtained 4.0g, mp 134-135°C. Analysis, calculated value: C 11 H 13 NO 5 S 2 : C, 43.56; H, 4.32; N, 4.62 Measured value: C, 43.98; C, 4.31; N, 4.31 Similarly, 4, 5 or 7-(2 , 3-dihydroxypropoxy)-2-sulfamoylbenzo[b]thiophene is produced. Example 21 5-(2,3-dihydroxypropoxy)-2-
Sulfamoylbenzo[b]thiophene Step A: N,N-dimethyl-N'-(5-hydroxy-2-sulfamoylbenzo[b]thiophene dimethylformamide dimethyl acetal (5.95 g, 0.050 mol) with rapid addition. 5-hydroxy-2- in acetonitrile (100 ml)
Sulhamoylbenzo[b]thiophene (10.65g,
0.046 mol) was stirred. 30 at ambient temperature
After stirring for a minute, the mixture was added to water (200ml) and
The solid was collected and dried under vacuum at 80°C to yield 11.39g (87%) of product melting at 208-209°C. After recrystallization with methanol, the analytical sample is 208.5-210
Melted at °C. Analysis, calculated value: C 11 H 12 N 2 O 3 S 2 : C, 46.46; H, 4.26; N, 9.85 Measured value: C, 46.67; C, 4.37; N, 10.12 Step B: 5-(2,3 -dihydroxypropoxy)
-2-Sulfamoylbenzo[b]thiophene production N,N-dimethyl-N'-(5-hydroxy-2
- Sodium hydride (0.21 g, 0.0044 mol, 50% in mineral oil) in dry dimethylformamide (10 ml) with addition of sulfamoylbenzo[b]thiophene)formamidine (1.00 g, 0.0035 mol) in portions over 15 minutes. Dispersion) suspension was stirred at 70°C under nitrogen. After stirring at 70°C for 30 minutes, 2,2-dimethyl-4-hydroxymethyl-1,3-dioxolane methanesulfonate (0.74 g, 0.0035 mol) was quickly added and the mixture was heated at 70°C for 19.5 hours. plus 0.01 g of 50% sodium hydride and 1.3 g of 2,2-dimethyl-4-hydroxymethyl-
- 0.19 g of dioxolane methanesulfonate was added and heating at 70°C was continued for a further 3 hours. The reaction mixture was poured into water (100ml) and diluted with ethyl acetate (3x
100ml), wash the combined extracts with water,
Dry over Na 2 SO 4 and evaporate under reduced pressure. The residue was heated and stirred with 6NHCl (20ml) for 17.5 hours. The reaction mixture was diluted with water (75 ml) and diluted with ethyl acetate (3
Ã100ml). After washing with water and drying over Na 2 SO 4 the solvent was evaporated under reduced pressure to give 0.60 g of product which was crystallized from methanol-chloroform.
(57%). After recrystallization with methanol-chloroform and treatment with decolorizing carbon, the analytical sample was
Melted at 162.5-163.5°C. Analysis, calculated value: C 11 H 13 NO 5 S 2 : C, 43.55; H, 4.32; N, 4.62 Measured value: C, 43.22; C, 4.29; N, 4.69 Examples 11, 14, 15, 17, 18 or 21, the ethers of 4,5,6 or 7-hydroxy-2-sulfamoylbenzo[b]thiophenes listed in Table V were prepared according to the following reaction scheme: Manufactured.
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H2OïŒ10mlïŒäžTable Example 22 5-(dibenzyl)amino-2-sulhamoylbenzo[b]thiophene Step A: Preparation of 5-dibenzylaminobenzo[b]thiophene 5-aminobenzo[b] in dry DMSO (40 ml)
Thiophene hydrochloride (4.65g, 0.025mol)
A stirred solution of was treated with benzyl bromide (6 ml, 0.05 mol) followed by solid NaHCO 3 (6.3 g, 0.075 mol).
Processed with. After a direct violent release of CO2 , the mixture turned into a solid mass. This was kept at ambient temperature overnight, then the solid was collected and recrystallized from CH3CN to yield 5.0 g (61%) of 5-(dibenzyl)aminobenzo[b]thiophene, mp 114-117<0>C.
The sample recrystallized with ethyl acetate-hexane is 115~
It melted at 117°C. Analyzed, calculated: C22H19 NS : C, 80.20; H, 5.81; N, 4.25 Found: C, 80.49; H, 5.86; N, 3.90 Step B: 5-(dibenzyl)amino-2-sulhamoyl Preparation of Benzo[b]thiophene The subject compound was prepared by the procedure described in Example 1, Step C using 5-dibenzylaminobenzo[b]thiophene in place of 6-methoxybenzo[b]thiophene. Ta. Crude product 1,2
-dichloroethane-hexane, then recrystallized from 70% ethanol to obtain 5-(dibenzyl)amino-2
- Obtained 52% of sulfamoylbenzo[b]thiophene as a light tan solid, mp 122-124°C. Analysis, calculated value : C22H20N2O2S2 : C, 64.68 ; H, 4.93; N, 6.86 Measured value: C, 64.82; H , 4.95; N, 7.11 Example 23 5-(dimethyl)amino -2-Sulfamoylbenzo[b]thiophene Step A: Preparation of 5-(dimethyl)aminobenzo[b]thiophene To a stirred solution of 5-aminobenzo[b]thiophene (4.55 g, 0.03 mol) in CH3CN (175 ml) 37%
Aqueous formaldehyde (28 ml, 0.035 mol) followed by sodium cyanoborohydride (6.65 g,
0.105 mol) was added. Glacial acetic acid (3.5ml) was added in small increments over 15 minutes. After 1 hour, acetic acid
A further 3.5ml was added and after a further hour the mixture was poured into ether (700ml). The ether layer was separated, washed with IMKOH (3X), then with saturated NaCl solution, dried over anhydrous Na 2 SO 4 and evaporated to dryness in vacuo. The residual dark oily solid was purified by chromatography on 800 ml of silica gel. Hexane 97:5- eluted with ethyl acetate 3
(dimethyl)aminobenzo[b]thiophene 4.6g
(88%) produced as a pale yellow solid mp 52-54 °C. Analyzed, calculated: C 10 H 11 NS: C, 67.75; H, 6.26; N, 7.90 Found: C, 67.12; H, 6.24; N, 7.85 Step B: 5-(dimethyl)amino-2-sulhamoyl Preparation of Benzo[b]thiophene The subject compound was prepared by the procedure described in Step C of Example 1 using 5-(dimethyl)aminobenzo[b]thiophene in place of 6-methoxybenzo[b]thiophene. The crude product was obtained as a dark yellow oil in 60% yield. Recrystallized twice with 1.2-dichloroethane and decolorized with charcoal to obtain 5-(dimethyl)-
Amino-2-sulfamoylbenzo[b]thiophene was produced as pale yellow needle crystals, mp197~
199â. Analysis, calculated value : C10H12N2O2S2 : C, 46.85; H, 4.72; N, 10.93 Measured value: C, 47.17; H , 4.52; N, 10.56 Example 24 4 - chloro-5- Morpholino-2-sulfamoylbenzo[b]thiophene and 5-morpholino-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-morpholinobenzo[b]thiophene 5-Aminobenzo[b]thiophene (5.4 g ïŒ
0.0362 mol), bis-(2-chloroethyl)ether (5.2 g, 0.0364 mol) and 40% aqueous NaOH
(0.073 mol) was stirred vigorously and heated to reflux for 22 hours. The cooled mixture was extracted with CHCl3 . The washed and dried CHCl 3 extracts were evaporated under reduced pressure leaving 7.0 g (88%) of the crude product as a slightly oily dark yellow solid. This material was combined with 1.75 g of comparable crude product from the previous run. Recrystallization from CH 3 CN yielded 5.50 g of 5-morpholinobenzo[b]thiophene, mp 127-132°C, confirmed by nmr. Step B: Preparation of 4-chloro-5-morpholinobenzo[b]thiophene-2-sulfonamide and 5-morpholinobenzo[b]thiophene-2-sulfonamide Drying under N 2 without peroxide 5 in THF (35ml)
-morpholinobenzo[b]thiophene (4.0g,
0.0182 mol) was stirred and cooled to -20°C.
n-Butyllithium (1.6M in 12.5ml hexane)
solution) was added dropwise over 10-15 minutes. The resulting red solution was stirred at â20 °C for 30 min, then heated with SO2 for 30 min.
passed over the surface for a minute. The thick suspension was stirred at ambient temperature for 1.25 hours, then poured into ether and the solid lithium sulfinate derivative was collected and washed with ether. This solid was suspended in dry CH2Cl2 ( 60ml ) and cooled to 5-10<0>C. N-chlorosuccinimide (3.15 g, 0.0236 mol) was added in portions over 10 minutes. After stirring for an additional 30 minutes in the cold, the mixture was filtered and the solvent was removed from the solution in vacuo. The residual dark red oily sulfonyl chloride (6.55 g) was dissolved in acetone (50 ml) and concentrated.
Added to a stirred mixture of NH4OH (35ml) and acetone (35ml). After 45 minutes, the mixture was concentrated in vacuo and the oil was extracted with ethyl acetate. The washed and dried ethyl acetate extracts were evaporated under reduced pressure leaving 5.4 g of crude mixed sulfonamide as a brown foam. This material was mixed with 1.1 g of comparable crude product from the previous experiment and purified on silica gel 500 using ethyl acetate-hexane (1:1) as eluent.
Chromatography was carried out at g. Chromatographic fractions containing less polar components were pooled and concentrated to yield 1.15 g (19%) of 4-chloro-5-morpholino-2-sulhamoylbenzo[b]thiophene, mp 195-199°C. . 600mg recrystallized with CH3CN , mp201~203â
I got it. Analysis, calculated value for C 12 H 13 ClN 2 O 3 S 2 : C, 43.30; H, 3.94; N, 8.42 Measured value: C, 43.57; H, 3.87; N, 8.06 Chromatograph containing highly polar components 5-morpholino-2-
Sulhamoylbenzo[b]thiophene 4.0g (74
%). 3.4g recrystallized with ethyl acetate,
mp155-156°C was obtained. Analysis, calculated for C 12 H 14 N 2 O 3 S 2 : C, 48.30; H, 4.73; N, 9.39 Measured: C, 48.59; H, 4.81; N, 9.57 Example 25 5-Methyl-2- Sulfamoylbenzo[b]thiophene 5-Methyl-2-sulfamoylbenzo[b]thiophene was prepared from 5-methylbenzo[b]thiophene (8.85 g, 0.06 mol) using the procedure of Example 1, Step C. The product yield was 9.8 g (72
%), mp212-213â. Example 26 5-Methoxymethyl-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-methoxymethylbenzo[b]thiophene Powdered KOH in dimethyl sulfoxide (100 ml)
(18.9 g, 0.336 mol) in 25 ml of dimethyl sulfoxide (prepared by Caddy et al.
Reference Australian J. Chem. 21, 1853-66 (1968) (13.8 g, 0.084 mol) was added. Methyl iodide (23.9 g, 0.168 mol) was then added dropwise over several minutes at ambient temperature. Stirring was continued for 11/2 hours. The mixture was filtered, diluted with water (150ml) and extracted in three portions with methylene chloride (200ml). The combined extracts were washed with water, dried over anhydrous Na SO and
filtered and concentrated in vacuo. This yielded 14.1 g of an amber liquid. 10.47 g of evaporated colorless liquid,
bp2.2mmHg110-111°C yielded 10.47g. (yield 70%). Step B: Preparation of 5-Methoxymethyl-2-sulfamoylbenzo[b]thiophene Repeat the procedure described in Example 1, Step C to prepare 5-methoxymethylbenzo[b]thiophene (10.47 g, 0.059 mol). 5-Methoxymethyl-2-sulfamoylbenzo[b]thiophene was produced from. Product yield was 13.9g (90%). MP (recrystallized from 1,2-dichloroethane) 124.5-125.5°C. Example 27 5-bromomethyl-2-sulhamoylbenzo[b]thiophene 5-bromomethyl-2-sulhamoylbenzo[b]thiophene in 300 ml of dry methyl chloride cooled to -30°C
Methoxymethyl-2-sulfamoylbenzo [b]
30 ml of boron tribromide (in methylene chloride) M solution in a suspension of thiophene (7.4 g% 0.029 mol), 0.03
mol) was added over 20 minutes. The resulting solution was stirred for 1 1/2 hours as the temperature rose to ambient temperature. The solution was cooled to 0°C and 150ml of water was added dropwise to keep the temperature below 20°C. The methylene chloride layer was separated and the aqueous suspension was extracted with methanol-chloroform (50/50) in three portions. The combined extracts were washed with ice water, dried over anhydrous Na 2 SO 4 , filtered and concentrated in vacuo to give a tan solid 8.8
(quantitative yield of crude product) with mp 171-173° C. after recrystallization from 1,2-dichloroethane. Example 28 5-Dimethylaminomethyl-2-sulfamoylbenzo[b]thiophene To an ice-cooled, stirred solution of 5-bromomethyl-2-sulfamoylbenzo[b]thiophene (2.0 g, 6.5 mmol) in 25 ml of methanol was added an excess of It was boiled with anhydrous dimethylamine. The flask was sealed and the mixture was stirred at room temperature for 1 hour. Methanol was removed in vacuo. Solid residue in chloroform (100ml)
and dissolved in NaHCO3 saturated solution (30ml).
The chloroform layer was separated and the aqueous mixture was extracted with chloroform-methanol (1/1, V/V) (50 ml). Combine this extract with chloroform,
Dry over anhydrous Na 2 SO 4 , filter and concentrate in vacuo. A solid (1.57 g) was obtained (90% yield) with mp 172-174.5°C after recrystallization from nitromethane. Example 29 5-(4-Morphorinylmethyl)-2-sulfamoylbenzo[b]thiophene Morpholine (0.91 g, 10.5 g in 20 ml methanol)
mmol) and triethylamine (1.01 g, 10
5-Bromomethyl-2-sulhamoylbenzo[b]thiophene (3.06 g, 10 mmol) was added dropwise over 5 minutes at ambient temperature to a stirred solution of 5-bromomethyl-2-sulfamoylbenzo[b]thiophene. Stirring was continued for 1 1/4 hours. The resulting suspension was cooled and filtered for an additional hour to yield a yellow solid.
g was produced. The liquid was concentrated in vacuo, then the residue was triturated with water and filtered to give an additional 0.3 g of a yellow solid. (Total crude yield 98%). Recrystallization with nitromethane gave mp 221.5-224.°C. The hydrochloride salt was also prepared using ethanol-HCl, mp 244-245°C, decomposed. Example 30 5-Acetoxymethyl-2-sulfamoylbenzo[b]thiophene 5-bromomethyl-2-sulfamoylbenzo[b]thiophene (3.06 g, 0.01 mol), anhydrous sodium acetate (0.98 g, 0.01 mol) and ice Three drops of triethylamine were added dropwise to a mixture of acetic acid (15ml). The mixture was heated and the resulting solution was stirred under reflux for 6 hours and left overnight at room temperature. The acetic acid was removed in vacuo and the remaining gum was diluted with 25 ml of ice water. The product was extracted with 3 x 50 ml of ether. The combined extracts were washed with water, dried over anhydrous Na 2 SO 4 , filtered, and concentrated in vacuo to give 2.5 g of a yellow solid (88% yield).
I got it. Recrystallize with chloroform to mp113-115
A material with a temperature of â was obtained. Example 31 5-Hydroxymethyl-2-sulhamoylbenzo[b]thiophene 5-hydroxymethyl-2-sulfamoylbenzo[b]thiophene in 25 ml of 1M aqueous KOH and 25 ml of methanol
A solution of acetoxymethyl-2-sulfamoylbenzo[b]thiophene (5.6 g, 19.6 mmol) was stirred at room temperature for 2 hours and under reflux for 2 1/2 hours. The mixture was filtered and the methanol was removed in vacuo. The remaining aqueous suspension was acidified with excess 6NHCl and the solid was filtered, washed with ice water and dried. Crude material (3.1 g) 5% in chloroform
Chromatographed on silica gel using (V/V) methanol. The product was obtained as a yellow solid, (1.85g), mp 174-176<0>C. Yield 41%. Example 32 5-(2-Methoxyethyl)-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-( 2 -hydroxyethyl)benzo[b]thiophene Magnesium turning (6 g , 0.25 mol) and THF (100 ml) were added. The mixture was heated under reflux and diluted with THF (50
A solution of methyl iodide (7.2 ml, d=2.28, 0.116 mol) and 5-bromobenzo[b]thiophene (24.4 g, 0.114 mol) in ml) was added dropwise. The mixture was heated under reflux for 5 hours, then cooled to 0-4°C and a solution of ethylene oxide (15g, 0.33mol) in THF (20ml) was added dropwise. After the addition, the reaction mixture was allowed to stir at room temperature overnight. The suspension was then cooled and a solution of 3NHCl (75ml) was added dropwise. Extract the aqueous layer with ethyl acetate (3x) and saturate the organic layer.
Backwashed with Na2CO3 , dried, filtered and concentrated to dryness. The residue was chromatographed on silica gel and the product was eluted with 30% ethyl acetate/hexanes to yield 9.3 g (48%) of product, mp 56-57°C. Step B: 5-(2-methoxyethyl)benzo[b]
Preparation of thiophene A suspension of KOH (6.5 g, 0.116 mol) in DMSO (55 ml) was stirred at room temperature for 5 minutes and 5-(2-hydroxyethyl)benzo[b]thiophene (5 g,
0.028g) was added. Methyl iodide (3.5 ml, d=2.28, 0.056 mol) was added to the above mixture.
After 1 hour, pour the mixture into H 2 O and remove the aqueous layer.
Extracted with CH2Cl2 ( 3x ). The organic extracts were washed with H2O (3x), dried, filtered and evaporated to dryness.
The residue was distilled to yield 4.7 g (87%) of the product, bp (1.2 mm
Hg) produced 115-120â. Step C: Preparation of 5-(2-methoxyethyl)-2-sulfamoyl-benzo[b]thiophene Replacement of 6-methoxybenzo[b]thiophene with an equimolar amount of 5-(2-methoxyethyl)benzo[b]thiophene mp 104-108°C using procedures substantially otherwise described in Example 1, Step C.
The title compound was prepared with (yield 66%). Example 33 5-(2-benzyloxyethyl)-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-(2-benzyloxyethyl)benzo[b]thiophene at 60°C with stirring under N2 heated DMF (50ml)
5-(2-hydroxyethyl) in DME (50 ml) in a solution of medium NaH (60% oil dispersion, 2.4 g, 0.06 mol)
A solution of benzo[b]thiophene (8.9 g, 0.05 mole) was added dropwise. After 1/2 hour, a solution of benzyl bromide (10.3 g, 7.2 ml, d=1.438, 0.06 mol) in DMF (50 ml) was added dropwise. After 15 minutes, the solution was poured into H2O and the aqueous layer was extracted with ethyl acetate (3x). The organic layer was backwashed with H2O , saturated NaCl, dried, filtered and concentrated to dryness. The residue was chromatographed on silica gel and the product was eluted with 10% (V/V) ethyl acetate-hexanes to give 9.7 g (72%) of the product.
was generated. The material was used directly in the next step without further purification. Step B: 5-(2-benzyloxyethyl)-2-
Preparation of Sulfamoylbenzo[b]thiophene Using the procedure of Example 1, Step C, but using the benzyl ether of Step A of this example as the starting material, the product, mp 136-138°C, was produced in yield.
Produced at 51%. Example 34 5-(2-Bromoethyl)-2-sulfamoylbenzo[b]thiophene 5-(2-methoxyethyl)-2-sulfamoylbenzo[b]thiophene (8.3 g, A solution of boron tribromide (BBr 3 ) (1M in hexane, 0.1 mol) in a solution of 0.031 mol)
100ml was added dropwise under nitrogen. Following the addition, the reaction was stirred at room temperature overnight (15 hours). Cool the mixture;
Diluted with 100ml of cold water. The aqueous layer was separated and extracted 2x with methylene chloride. Combine the first organic layer and extract, dry, filter, and concentrate to dryness.mp118~
8.3 g (86%) of product with a temperature of 120°C was produced. Example 35 5-(2-acetoxyethyl)-2-sulfamoylbenzo[b]thiophene and 5-ethenyl-2-sulfamoylbenzo[b]thiophene 5-(2-bromoethyl)-2-sulfamoylbenzo[b] A solution of 4.0 g (0.012 mol) of thiophene, 2.0 g (0.024 mol) of sodium acetate and 40 ml of DMF was heated at 100° C. under nitrogen. After 15 hours, the mixture was poured into water and the aqueous layer was extracted 3x with ethyl acetate. The extract was dried, filtered and concentrated to dryness. The residue was chromatographed on silica gel by elution with 20% (V/V) ethyl acetate-hexane to give 5-ethenyl-2-sulhamoylbenzo[b]thiophene, mp 168-170°C (1 ,2
-dichloroethane) was produced. 40 more
5% (V/V) eluting with ethyl acetate-hexane.
-(2-acetoxyethyl)2-sulfamoylbenzo[b]thiophene, mp120-122â (1,2
-dichloroethane) produced 3.74 g (59%). Example 36 5-(2-Hydroxyethyl-2-sulfamoylbenzo[b]thiophene 5-(2-acetoxyel)-2-sulfamoylbenzo[b]thiophene (1.8 g, 0.006 mol),
A solution of ethanol (50ml) and 10% NaOH (50ml) was heated at reflux. After 4.5 hours, the mixture
Pour into 3NHCl (150 ml) and ethyl acetate (3x)
Extracted with. Wash the organic extract with saturated Na2CO3 ,
Drying, filtering and concentrating to dryness yielded 1.5 g of product (97
%) produced mp162-164â. Example 37 6-(2-methyldioxolan-2-yl)-2
-Sulfamoylbenzo[b]thiophene Step A: Preparation of 6-acetylbenzo[b]thiophene 6-acetyl-2,3-dibromobenzo[b]
Thiophene (6.68 g, 20 mmol) was dissolved in a mixture of ethanol and ethyl acetate (100 ml each),
MgO (1.6 g) and Pd(OH) 2 /C (800 mg) in N 2
Added under atmosphere. Hydrogenolysis for 3 hours at room temperature
Performed at 40 psi H2 . The catalyst was removed by filtration and the solvent was removed in a vacuum. Dissolve the residue with CHCl3 (100ml)
Partitioned into H2O (50ml). CHCl 3 layers in H2O (50ml)
Washed with. The aqueous layers were combined and back extracted with CHCl 3 (30ml). The CHCl 3 solutions were combined, dried over Na 2 SO 4 and the solvent was evaporated in a vacuum to yield 3.8 g of product, which was used in the next step without further purification. Step B: Preparation of 6-(2-methyldioxolan-2-yl)benzo[b]thiophene 6-acetylbenzo[b]thiophene (10.57
g, 60 mmol), p-toluenesulfonic acid (1.65 g) and ethylene glycol (33 ml) in toluene (250 ml) for 2 hours with continuous removal of H 2 O using a Dean-Stark trap. Heat to reflux. The reaction mixture was allowed to cool to room temperature. then 20% saturation
Extracted with NaHCO3 (150ml) and H2O (2x150ml). After drying over Na2SO4 , the solvent was evaporated in a vacuum and the residue was crystallized with hexane (50ml) to yield 9.66g (73%) of product. Step C: Preparation of 6-(2-methyldioxolan-2-yl)-2-sulfamoylbenzo[b]thiophene 6-methoxy-2-sulfamoylbenzo[b]
The title compound was prepared by the procedure used in Example 1, Step C for the synthesis of thiophene. After crystallization from ethyl acetate-hexane, the product
Obtained 6.35g (42%), mp 127-128°C. Example 38 6-acetyl-2-sulhamoylbenzo [b]
Thiophene Ketal product from Example 37 (4.4 g, 14.7 mmol) and p-toluenesulfonic acid (400 mg)
was dissolved in acetone (90ml). The mixture was stirred overnight. The solvent was removed in a vacuum and the residue was partitioned between ethyl acetate (200ml) and a saturated solution of 10% NaHCO3 (100ml). The organic layer was dissolved in H 2 O (2 x 100 ml)
and dried with Na2SO4 . The solvent was removed in a vacuum and the residue was triturated with hot CHCl 3 (100ml). 3.4 g (90.6%) of product was obtained upon cooling, m.
p.154-155â. Example 39 6-(1-Hydroxyethyl)-2-sulfamoylbenzo[b]thiophene The acetyl compound from Example 38 (1.79 g, 7 mmol) was dissolved in 40 ml of CH 3 OH, cooled to 0°C,
NaBH 4 in 4 ml of 40% NaOH was added. The reaction mixture was stirred for 25 minutes, then 2.5 g of NH 4 Cl was added,
Then 1 ml of glacial acetic acid was added. The solvent was removed in a vacuum and the residue was dissolved in ethyl acetate (75ml) and 20% sat.
Partitioned into NaHCO3 (50ml). Ethyl acetate layer
Washed with H 2 O (50ml) and the combined aqueous solution was back extracted with ethyl acetate. The ethyl acetate extracts were combined and dried over Na 2 SO 4 . The solvent was removed in a vacuum and the residue was crystallized with CHCl3 -dichloroethane to yield 1.56 g (86.7%) of product, mp 134-35<0>C. Example 40 4-Chloro-5-hydroxy-2-sulfamoylbenzo[b]thiophene Stirred solution of 5-hydroxy-2-sulfamoylbenzo[b]thiophene (3.0 g, 0.013 mol) in CH3CN (60 ml) was treated with N,N-dimethylformamide dimethyl acetal (1.75ml, 0.013mol). Within 5 minutes, the protected sulfonamide began to precipitate. After 10 minutes, CH 3 CN (65 ml) was added to redissolve. N-chlorosuccinimide (1.91
g, 0.0143 mol) was added in one portion and the mixture was stirred at ambient temperature. After 2 days, an additional 175 mg of N-chlorosuccinimide was added and stirring continued for a further 3 days. The solvent was evaporated under reduced pressure and the remaining solid was
Triturated with H2O (100ml) and collected. This solid was then suspended in 6NHCl (70ml) and 6 1/6
heated for an hour. The solid produced was extracted with ethyl acetate. The washed and dried extract was evaporated under reduced pressure to yield 3.1 g (90%) of 4-chloro-5-hydroxy-2-sulhamoylbenzo[b]thiophene, m.
p.198-201â remained. Recrystallization with H 2 O and decolorization with charcoal gave 2.6 g, mp 203-205°C. Example 41 6-Hydroxy-2-sulfamoylbenzo[b]thiophene-6-sodium sulfate A mixture of 3.00 g of 6-hydroxy-2-sulfamoylbenzo[b]thiophene and 3.00 g of sulfamic acid in 20 ml of dry pyridine. was gently refluxed for 36 hours. At the end of the reaction, pyridine was distilled from the mixture at 50° C. under vacuum. The residue was dissolved in water and made basic by adding concentrated ammonia. The solvent was evaporated. The product was separated from the residual ammonium sulfamate by extraction with ethanol.
Filter the ethanolic extract and evaporate to obtain the crude sulfate.
3.2 g was obtained as ammonium salt. The salt was dissolved in distilled water and titrated with 1 equivalent of sodium hydroxide. The solvent was evaporated leaving the crude sodium sulfate salt. A 2.64 g portion of the product was boiled in 40 ml of saturated sodium chloride solution and sufficient water was added to obtain a clear solution. Upon cooling, 2.00 g of white solid separated. Elemental analysis showed the material to be a mixture of the desired product and 11.7% (by weight) sodium chloride. Calculated value for C 8 H 6 NNaO 6 S 3ã»0.117NaCl C, 25.60; N, 3.73; H, 1.61; Cl,
7.12 Measured value: C, 25.87; N, 3.97; H, 1.54; Cl,
7.12 The ammonium salt produced in Example 41
Potassium chloride, tetramethyl ammonium chloride, pyridine,
Treatment with imidazole, pralidoxime chloride or thiamine produces the corresponding salts. Example 42 6-Hydroxy-2-sulhamoylbenzo[b]thiophene-6-disodium phosphate A solution of 2.5 g of 6-hydroxy-2-sulhamoylbenzo[b]thiophene in 10 ml of pyridine (10 ml) Added to a well-stirred solution of 1.02 ml of phosphorous chloride at 0° C. over 1 minute.
After 15-30 minutes the reaction mixture was poured into ice water and the resulting solution was stirred for 15 minutes. The solvent was evaporated on a rotary evaporator under high vacuum. The product was suspended in water and the pH of the solution was adjusted to 7.8±0.6. The solvent was removed and the solid was dried under high vacuum. The solid was redissolved in 100ml of distilled water. Gradual addition of 400 ml of acetone led to a precipitate of the title compound (1.50 g) as a monohydrate.
Elemental analysis: Calculated values for C 8 N 6 NNa 2 O 6 PS 2ã»H 2 O: N, 3.77; C, 25.88; H, 2.17; S,
17.27 Measured value: N, 3.85; C, 25.64; H, 2.09; S,
17.32 Salts other than phosphate can be obtained by substituting sodium hydroxide in the above procedure with suitable hydroxides such as sodium hydroxide, tetramethylammonium hydroxide, pyridine, imidazole, pralidoxime hydroxide and thiamine. . Mixed esters having the following types are: (In the formula, R 2 is C 1-3 alkyl or phenyl-
C 1-3 alkyl. ) Hydroxy-2-sulfamoylbenzo[b]thiophene is prepared by reacting with a suitable alkyl dichlorophosphate, such as ethyl dichlorophosphate or benzyl dichlorophosphate. Example 43 6-Hydroxy-5-methoxy-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-(4-hydroxy-3-methoxybenzylidene) rhodanine Vanillin (30.4 g, 0.2 mol), rhodanine (26.6 g, 0.2 mol), anhydrous sodium acetate (41 g,
Stir a mixture of 0.5 mol) and glacial acetic acid,
Heated under reflux for 2 hours. The cooled reaction mixture was added to water (1200ml) and the yellow-orange solid that separated was collected, washed with water and air dried. Yield: 46g. Step B: Preparation of 3-(4-hydroxy-3-methoxyquiphenyl)-2-mercaptoacrylic acid Add the product from Step A to 20% sodium hydroxide solution and heat to 70-75° C. with stirring for 1 hour. did. The resulting solution was cooled in an ice bath and rapidly added to cold 10% hydrochloric acid (350ml) with stirring. The yellow solid was collected, washed with water and dried at 50°C. Yield: 36g. Step C: Preparation of 6-hydroxy-5-methoxybenzo[b]thiophene-2-carboxylic acid To a stirred mixture of the product from Step B (73 g) and 90% ethanol (2000 ml) was added iodine (90 g). . The resulting dark mixture was heated under reflux for 24 hours. Saturated bisulphite solution (200ml) was added to the cooled reaction mixture and the ethanol was removed in a vacuum. The aqueous residue was diluted to 1500ml with water and extracted with ethyl acetate (4x400ml). The combined extracts were evaporated in a vacuum and the residue was heated with 1N sodium hydroxide solution (1500ml) in a steam bath for 3 hours. The solution was treated with charcoal, filtered, diluted to 2500ml with water and acidified with concentrated hydrochloric acid. Collect the precipitated solids,
Washed with water and dried. Yield: 36.8g. Step D: Preparation of 6-Hydroxy-5-methoxybenzo[b]thiophene A mixture of the product from Step C (8 g), copper powder (2 g) and quinoline (40 ml) was heated under reflux for 2 hours. Ice (200g) crushed hot reaction mixture
The mixture was poured into water, acidified with 6N hydrochloric acid, and filtered. The filtrate was washed with saturated sodium chloride solution, dried (Na 2 SO 4 ), filtered and the solvent was evaporated in a vacuum leaving 5 g of waxy solid. Step E: 6-Hydroxy-5-methoxy-2-sulfamoylbenzo[b]thiophene To a cooled (-20°C) solution of 6-hydroxy-5-methoxybenzo[b]thiophene (15g) in dry tetrahydrofuran (300ml) , butyllithium (117ml, 1.6N in hexane) was added. After the addition is complete, the reaction mixture is allowed to warm to 20 °C;
SO 2 gas was introduced to the surface of the stirred mixture. Additions continued until the aliquot dissolved in water no longer appeared alkaline (PH paper). After stirring for 1 hour, ether (500ml) was added and an off-green solid was collected on the filter. This solid was added to a solution of sodium acetate (13.8g) in water (500ml) followed by hydroxylamine-0-sulfonic acid (41.7g). After 24 hours, the solid was collected, washed with chloroform, and recrystallized from water.
4.9g, mp201-204â. Analysis, calculated for C9H9NO4S2 : C, 41.69; H, 3.50; N, 5.40 Found: C, 42.50; H, 3.55; N, 5.38 Starting with 3 - hydroxy-4-methoxybenzaldehyde 5-Hydroxy-6-methoxy-2-sulhamoylbenzo[b]thiophene is prepared using the procedures described in Example 43, Steps A-E, except that: Example 44 5,6-dihydroxy-2-sulfamoylbenzo[b]thiophene A stirred mixture of 6-hydroxy-5-methoxysulfamoylbenzo[b]thiophene (4.9 g) and pyridine hydrochloride (15 g) was heated to 190-
Heated to 200°C for 1.5 hours. The warm reaction mixture was diluted with water (200ml) and extracted with ethyl acetate (4x150ml). The extract was washed with water, saturated sodium chloride solution, dried (Na 2 SO 4 ), filtered and evaporated under reduced pressure to give 1.8 g of a tan solid residue.
Recrystallization with nitromethane gave a material with mp 233-235°C. Analysis, calculated for C8H7NO4S2 : C, 39.16; H, 2.88; N, 5.71 Measured: C, 38.85; H , 2.74; N, 5.77 Example 45 5-N,N-dimethylcarbamoyl Oxy-2
- Sulfamoylbenzo[b]thiophene 2.3 g (10 mmol) of 5-hydroxy-2-sulfamoylbenzo[b]thiophene in 50 ml of pyridine
of solution with 200 mg of 4-dimethylaminopyridine,
Finally, add 2.5 ml of dimethylcarbamyl chloride (2.9
g, 27 mmol). The resulting clear solution was stirred at room temperature for 48 hours and poured into a mixture of 200 g of chopped ice and 100 ml of concentrated HCl. The precipitated solid was collected and washed with cold H 2 O until the washings were neutral. Drying yielded 2.25 g (75%) of a tan powder, which was crystallized with isopropyl alcohol to yield the product.
Obtained 1.6g, mp 192-194°C. Example 46 5-(Carboxymethoxy)-2-sulfamoylbenzo[b]thiophene A suspension of 50% sodium hydride (0.32 g, 0.0066 mol) in dry dimethylformamide (15 ml) was stirred at 25°C under nitrogen. On the other hand, N,N-dimethyl-
N'-(5-hydroxybenzo[b]thiophene-
2-Sulfonyl)amidine (1.50 g, 0.0053 mole) was added portionwise over 15 minutes. Mixed liquid
Stirred at 70°C for 15 minutes, then ethyl bromoacetate (1.10g, 0.0066 mol) was quickly added and the mixture was heated at 70°C for 16.5 hours. The reaction solution was diluted with water (150
ml) and extracted with ethyl acetate (3x100ml). The extract was washed with H 2 O, dried over Na 2 SO 4 and concentrated under reduced pressure. 2N NaOH (14ml) of the residue
The mixture was stirred at 40° C. for 4 hours in a mixture of 7 ml and methanol (7 ml). After evaporating the solvent under reduced pressure, the residue was dissolved in water (35 ml) and acidified with 3NHCl to collect the solid and give 0.95 g of product which melts at 200-203 °C.
(63%). After recrystallization with nitromethane, the analytical sample melted at 202.5-204 °C. Example 47 5-(Carbamoylmethoxy)-2-sulfamoylbenzo[b]thiophene Mixture of 5-(carboxymethoxy)-2-sulfamoylbenzo[b]thiophene (5.00 g, 0.017 mol) in thionyl chloride (50 ml) The solution was refluxed for 1 hour, then concentrated under reduced pressure. The residue was treated with cooled concentrated ammonium hydroxide solution (75 ml) and incubated at 25°C for 1 hour.
Stir for hours. The solution was concentrated under reduced pressure for several minutes until solids began to precipitate. Collect the solid and heat to 197-198â
3.34 g (69%) of product was produced which melted at . 95
When recrystallized with % ethanol, the analytical sample was 200-201
Melted at °C. Example 48 5-(2-Aminoethoxy)-2-sulfamoylbenzo[b]thiophene hydrochloride 5-(carbamoylmethoxy)-2-sulfamoylbenzo[b]thiophene (0.50 g, 0.0017 mol) in dry tetrahydrofuran. The suspension of was stirred and heated to reflux in an oil bath at 80 °C under nitrogen while 10.0 M borane-dimethyl sulfide complex (0.4 ml, 0.0040 mol) was added over 20 min. The dimethyl oxide had been distilled out from the reaction mixture using a Claisen distillation head. Furthermore, 5 ml of tetrahydrofuran and 0.2 ml of a 10.0M borane-dimethylsulfide complex were added, and the mixture was refluxed for 1 hour. After cooling to room temperature, methanol (3 ml) was added dropwise to decompose the excess borane-dimethylsulfide complex, then 5 ml of ether saturated with hydrogen chloride was added and the mixture was heated at 25°C to approx.
Stirred for 16 hours. The product was collected to give 0.37 g (71%) of material that melts at 222-224°C. Methanol-
After recrystallization with ether, the analytical sample is 234-236â
It melted. Example 49 6-Amino-2-sulfamoylbenzo[b]thiophene Step A: Preparation of 6-acetamido-2-sulfamoylbenzo[b]thiophene 6 in glacial acetic acid (50 ml) and concentrated H2SO4 ( 20 ml) â
A solution of acetylbenzo[b]thiophene-2-sulfonamide (5.1 g, 0.02 mol) was stirred and 65
heated to â. Sodium azide (5.0g, 0.077
mol) was added in 1 hour portions. 80% of the mixture
After heating for a further 3 hours at °C, it was poured into a stirred saturated solution of NaOAc (500 ml) cooled in an ice bath. The resulting mixture was cooled overnight. The solid was collected, resuspended in water (300ml) and recollected to yield 5.25% of the crude product.
g (97%), mp 214-217°C. Charcoal decolorization and recrystallization with CH3OH and CH3CN yielded 1.5 g of 6-acetamido-2-sulhamoylbenzo[b]thiophene, mp 231-232.5<0>C. Step B: Preparation of 6-amino-2-sulfamoylbenzo[b]thiophene 6-acetamido-2-sulfamoylbenzo[b]thiophene (0.8 g, 3 mmol)
Suspended in 1NHCl (24ml). The stirred mixture was heated to reflux for 1 hour, resulting in a clear solution. Cooled solution after diluting with water (25ml)
Neutralized with NaHCO3 saturated solution. The precipitated product was collected to yield 0.57g (83%), mp 240-241°C decomposition. This material was mixed with 1.3 g of comparable crude from two other runs, recrystallized with CH 3 CN,
Decolorize with charcoal to obtain 6-amino-2-sulhamoylbenzo[b]thiophene, mp239-240â (decomposition)
Produced 1.46g. Example 50 5-(2-Aminoethyl)2-sulfamoylbenzo[b]thiophene Step A: Preparation of 5-(2-azidoethyl)-2-sulfamoylbenzo[b]thiophene Under nitrogen, 5-(2- Bromoethyl)-2-sulfamoylbenzo[b]thiophene (1.2g, 0.0037
mol), NaN 3 (0.6g, 0.0092 mol) and DMF
(25ml) was heated at 100°C. After 18 hours, the solution was cooled, poured into H2O , and filtered to give a product of 0.8
g was produced. The filtrate was extracted with ethyl acetate (2x). The organic layer was dried, filtered, and concentrated to dryness to yield an additional 0.4 g of product (75%). Step B: Preparation of 5-(2-aminoethyl)-2-sulfamoylbenzo[b]thiophene Product from Step A (1.2 g, 0.004 mol), ethanol (125 ml), CHCl3 (2.2 ml) and carbon The above solution of 10% Pd (0.45 g) was hydrogenated in a Parrshaker at 55 psi.
After shaking overnight, the contents were filtered through a filter aid pad with a blanket of N2 . The solution was concentrated to dryness and the residue was crystallized from CH3OH - CH3CN to yield 0.62 g of product, mp 295-297<0>C. Example 51 5-(trifluoromethylimidazole-2-
NBS (6 g, 0.034 mol) in CCl 4 (300 ml) under N 2
Medium 5-methylbenzo[b]thiophene (30.8g,
0.21 mol) benzoyl peroxide (1.6 g) and heated under reflux. 15 minutes later,
The remainder of NBS (35 g, 0.2 mol) was added over 5 minutes and heated under reflux for 1.5 hours. The reaction mixture was then cooled, filtered, and the filtrate was washed with H2O (2x), dried, filtered, and concentrated to dryness. Dissolve the residue in CHCl 3 (130 ml) and dissolve hexamethylenetetramine (33.6 g, 0.24 mol) in CHCl 3 (60 ml).
was added to the solution. After 0.5 hours, the reaction mixture was cooled, filtered, and the solids were washed with hexane. After drying, the solid was dissolved in acetic acid- H2O (275ml) and heated under reflux for 2 hours. Add concentrated HCl (55ml);
The mixture was refluxed for an additional 5 minutes. After cooling, the solution was extracted with ether (3x) and the organic extract was saturated.
Backwash with Na 2 CO 3 (2x), dry, filter,
Concentration to dryness yielded 16.4 g (48%) of product. Step B: 5-(1,3-dioxolan-2-yl)
Preparation of benzo[b]thiophene Product from step A (16.4 g, 0.1 mol), toluene (300 ml), p-toluenesulfonic acid (1.0 g)
and ethylene glycol (20ml) was heated under reflux with a Dean-Stark trap. After 6 hours, the organic layer was cooled and washed with saturated Na 2 CO 3 . The Na2CO3 layer was extracted with ethyl acetate (2x). The combined organic extracts were dried, filtered, and concentrated to dryness. The residue was distilled at 0.3 mmHg at 149-153°C to yield 16.4 g (79%) of product. Step C: Preparation of 5-formyl-2-sulhamoylbenzo[b]thiophene Cool a solution of the product from Step B (6.2 g, 0.03 mol) in dry THF (75 ml) to below -40°C under N2. Then n-butyllithium (20 ml, 1.6 M in hexane, 0.032 mol) was added dropwise while maintaining the temperature below -40°C. After stirring for an additional 0.5 h at approximately â40° C., SO 2 gas was introduced to the surface of the reaction for 20 min. Ether was then added to the suspension and allowed to stir at ambient temperature for 1 hour. The solids were removed by filtration and dried. Solid CH2Cl2
(150 ml) and the mixture was cooled in an ice bath while N-chlorosuccinimide (4.0 g, 0.03 mol) was added. After the addition is complete, keep the suspension at room temperature.
After stirring for 18 hours, the suspension was filtered and concentrated to dryness.
The residue was dissolved in acetone (50ml) and NH3 water (50ml)
and the solution was concentrated to remove acetone.
The resulting suspension was filtered to obtain a solid (5 g).
was dissolved in acetone (90 ml) and 1N HCl (90 ml) and heated in a steam bath for 15 minutes. Pour the mixture into H2O
and extracted with ethyl acetate (3x). The organic layer was dried, filtered, and concentrated to dryness to give 3.3 g (48
%). Step D: Preparation of 5-(4-trifluoromethylimidazol-2-yl)-2-sulfamoylbenzo[b]thiophene in H2O (10ml)
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å®æœäŸ 57An additional amount of formula (1 g) was added. After 5 hours, the solvent was removed under reduced pressure and the 2%
Chromatographed on silica gel with gradient elution from CH3OH - CHCl3 to 100% CH3OH . The crude product was crystallized from CH 3 CN to give product 0.85
g (50%), mp 285-286°C. Example 52 5-[2-(dimethylamino)ethylthiomethyl]-2-sulhamoylbenzo[b]thiophene To a stirred solution of 2-dimethylaminoethanethiol hydrochloride (14.17 g, 0.10 mol) in 125 ml of dry DMF in mineral oil 60% sodium hydride (8.0g,
0.2 mol) was added dropwise under nitrogen over 1/2 hour while warming on a steam bath. The mixture was stirred for an additional 1/2 hour and then cooled with ice. into the cooled suspension.
5-Bromomethyl-2-sulhamoylbenzo[b]thiophene (7.66 g, 0.025 mol) in 25 ml DMF
solution was added dropwise. Add the mixture to ice bath temperature for 1 more time.
Stir for hours. Filter the mixture and pour the filtrate into a vacuum chamber.
Concentrate to 0.5 mm at room temperature. The solid residue was combined with the filtered solid and dissolved in 3N HCl (100ml). The acid solution was extracted with CHCl 3 (2Ã50 ml), neutralized with NaHCO 3 and concentrated to dryness in a vacuum. residual solids
Extracted with CHCl 3 (3 x 100 ml). The CHCl 3 extract was dried over anhydrous Na 2 SO 4 , filtered, and concentrated in a vacuum at room temperature. The resulting solid contained some polar impurities, which were removed by trituration with hot water. 2.8 g of product was recovered (34% yield), mp132~
133%. Example 53 5-[2-(dimethylamino)ethylsulfinylmethyl]-2-sulfamoylbenzo[b]thiophene 5-[2-(dimethylamino)ethylthiomethyl]-2- in 20 ml ethanol and 40 ml water. To a partial solution of sulfamoylbenzo[b]thiophene (1.32 g, 0.004 mol) was added sodium metaperiodate (0.94 g, 0.0044 mol) and the mixture was stirred at room temperature for 16 hours overnight. The reaction mixture was filtered and the filtrate was evaporated to dryness in a vacuum. White solid residue 4/
1 (V/V) Recrystallize twice with water/ethanol to 7.5
Chromatographed on silica gel eluting with % (V/V) methanol/ CHCl3 . white solid
0.88g, mp 180-183°C decomposition was recovered. (yield 64%). Example 54 5-[2-(dimethylamino)ethylsulfonylmethyl]-2-sulfamoylbenzo[b]thiophene 5-[2-(dimethylamino)ethylthiomethyl]-2- in 20 ml of water at 40-45°C. Potassium peroxymonosulfate âOxonâ in a solution of sulfamoylbenzo[b]thiophene (2.34 g, 0.0064 mol)
(5.93g, 0.0096mol) was added. The mixture was stirred at room temperature overnight and heated on a steam bath for 2-1/2 hours.
The mixture was cooled and made basic with NaHCO3 . Filtration yielded 2.5 g of crude product. Purified by chromatography on silica gel eluting with 10% (V/V) methanol/ CHCl3 to give a pale pink solid.
0.78 g, mp 185.5-187°C (decomposition) was obtained. (yield
34%). Example 55 5-(carboethoxymethoxy)-2-sulhamoylbenzo[b]thiophene 5 in ethanol (15 ml) and concentrated sulfuric acid (3 ml)
A mixture of -(carboxymethoxy)benzo[b]thiophene-2-sulfonamide (1.50 g, 0.0052 m) was refluxed for 5 hours with stirring. The ethanol was evaporated under reduced pressure and the residue was treated with H2O (25ml) and extracted with ethyl acetate (50ml and 2x25ml). The combined extracts were washed with H2O , saturated sodium bicarbonate solution (2x25ml) and three times with H2O . After drying over Na2SO4 , the solvent was evaporated under reduced pressure to yield 1.43g (87%) of product. Recrystallization from nitromethane yielded 1.12 g of analytically pure product melting at 167.5-168°C. Example 56 5-(N-hydroxycarbamoylmethoxy)-
2-Sulfamoylbenzo[b]thiophene Potassium hydroxide (2.58 ml) in methanol (7 ml)
g, 0.046 mol) in methanol (10 ml)
Medium hydroxylamine hydrochloride (1.60g,
0.023 mol) was added to the hot solution under nitrogen. in an ice bath
After cooling for 10 minutes, the solid was filtered and washed with methanol. The combined filtrate and washings were diluted with 5-(carboethoxymethyl-2-sulhamoylbenzo[b]thiophene (3.57 g,
0.011 mol) and the mixture was stirred at ambient temperature for 49 hours. The solid was collected, washed with ether, then heated to reflux in 1.5N acetic acid (17ml) until a clear solution formed. After cooling to ambient temperature, the product was collected, yielding 2.16 g (65%) of crude product melting at 138°C. Preparative TLC
0.67 g of pure product was produced, melting at 153°C.
After recrystallization with nitromethane, the analytical sample was heated to 156°C.
It melted. For use in treating conditions alleviated by inhibition of carbonic anhydrase, the active compounds can be administered systemically or locally in ocular therapy. The dosage used is approximately 100 mg per day, preferably in 2 to 4 doses per day, although one dose or once per day is sufficient.
It can be between 0.1 and 25 mg. When administered to treat elevated intraocular pressure or glaucoma, the active compound is most desirably administered locally to the eye, although systemic treatments are possible, as described above. When administered systemically, the oral route is preferred, but the drug can be administered by any route. For oral administration, the drugs can be used in any conventional dosage form, such as tablets or capsules, for simultaneous delivery or sustained release. Any conventional excipients or tablet adjuvants may be included as well. When administered by the topical route, the active agent or its ophthalmically acceptable salts, such as sodium or potassium salts, are formulated into ophthalmic preparations.
In such formulations, 0.1-15% by weight can be used. As long as the symptoms persist, the patient should continue treatment and administer 0.1 to 0.1 to one eye per day.
It is for administering a 10mg dose. thus using the active drug or an equivalent amount of its salt in an ophthalmic solution, insert, ointment or suspension for local delivery or in a tablet, intramuscular or intravenous injection composition for systemic delivery; The remainder is carriers, excipients, etc. as customarily used in such compositions.
It is a preservative. The active agents of the invention are most suitably administered in the form of ophthalmic pharmaceutical compositions adapted for topical administration to the eye, such as suspensions, ointments, or solid inserts. The formulation of such compounds is 0.01-15% of the drug,
In particular, it can contain 0.5 to 2%. Higher or lower doses, such as about 10%, can be used provided that the dose is effective in lowering or controlling elevated intraocular pressure. As a unit dose, 0.001 to 10.0 mg of the compound, preferably
0.005 to 2.0 mg, especially 0.1 to 1.0 mg, is generally used in the human eye in a single daily dose or in divided doses as long as the condition to be treated is present. These above-mentioned dosage values are believed to be correct for human patients and are based on the known and currently understood pharmacological effects of the compounds and the effects of other similar substances in the human eye. They reflect the best known methods. As with all drugs, dosage requirements vary and must be individualized based on the disease and patient response. Pharmaceutical formulations containing the active compounds can generally be mixed with non-toxic pharmaceutical organic carriers or with non-toxic pharmaceutical inorganic carriers. Representative examples of pharmaceutically usable carriers are water, water and water-miscible solvents such as lower alkanols or aralkanol vegetable oils, polyalkylene glycols, yellow petrolatum, ethylcellulose, ethyl oleate, carboxymethylcellulose, polyvinylpyrrolidone, isopropyl myristate. and other commonly used carriers. Pharmaceutical formulations may also contain non-toxic auxiliary substances such as emulsifiers, preservatives, wetting agents, toning agents, etc. Antibacterial substances such as ammonium compounds, phenylmercuric salts, thimerosal, methyl and propylparabens, benzyl alcohol, phenylethanol, which have sterilizing properties at low temperatures and are known to be harmless in use, sodium chloride, boron Buffer components such as sodium chloride, sodium acetate, gluconic acid, salt buffers and sorbitan monolaurate, triethanolamine, oleate, polyoxyethylene sorbitan monopalmitylate, dioctyl sodium sulfosuccinate, monothioglycerol, thio Other customary ingredients such as sorbitol, ethylenediaminetetraacetic acid may be included.
Further suitable ophthalmic excipients include the customary phosphate buffered excipient systems, isotonic boric acid excipients, isotonic sodium chloride excipients, isotonic sodium borate excipients, etc. can be used as a carrier medium for The pharmaceutical formulation can also be in the form of a solid insert, such that the drug remains substantially intact after dispersion, or a biodegradable insert that dissolves in lachrymal fluid or otherwise in a disintegrant. The following examples of ophthalmic formulations are presented for illustrative purposes. Example 57
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ååç©ããã³ã¯ã»ãªã³ãç¡èçã«æ··åãããTable Compounds, phosphate buffer and benzalkonium chloride were added and dissolved in water. PH of the composition
Adjusted to 6.8 and diluted to volume. The composition was sterilized by ionizing radiation. Example 58 6-(2-sulfamoylbenzo[b]thienyl)-2-methylpropionate () 5 mg Vaseline qsad. 1 g The compound and Vaseline were mixed aseptically. Example 59 6-(2-sulhamoylbenzo[b]thienyl) 2-methylpropionate 1 mg Hydroxypropyl cellulose qs 12 mg Ophthalmic inserts were prepared using a powder mixture of the above ingredients.
It was made from a compressed film prepared on a Carver Press by subjecting it to a compression force of 12,000 pounds (gauge). The film was cooled under pressure with cold water circulating through the platen. The ophthalmic inserts were then individually cut from the film with a bar punch. Place each insert in a vial and then store in a humidity cabinet (30°C) for 2-4 days.
(88% RH). After removing from the humidity cabinet, the vial was stoppered and then covered with a lid. vial containing a hydrate insert.
Autoclaved at 250°C for 1/2 hour. Example 60 6-(2-sulfamoylbenzo[b]thienyl)
Acetate 1 mg Hydroxypropylcellulose qsad. 12 mg Ophthalmic inserts were made from solvent-washed films prepared by forming a viscous solution of the powdered ingredients listed above using methanol as the solvent. The solvent was placed on a Teflon plate and left to dry under ambient conditions. After drying, the film was placed in an 88%RH cupboard until it began to sag. Inserts of appropriate size were cut from the film. Example 61 6-(2-sulfamoylbenzo[b]thienyl)
Acetate 1mg hydroxypropyl methylcellulose qsad.
12mg ophthalmic inserts are methanol/water solvent based (10mg
ml methanol to 2.5 g of the powder blend, to which 11 ml of water (in 3 portions) was added to form a viscous solution of the powder blend of the above components. manufactured. The solution was placed on a Teflon plate and left to dry at ambient temperature. After drying, the film was placed in an 88% RH cabinet until it became flexible. Inserts of appropriate size were then cut from the film. Example 62 6-(2-sulfamoylbenzo[b]thienyl)
Acetate 1mg hydroxypropyl methylcellulose qsad.
12mg ophthalmic inserts are made with a powder mixture of the above ingredients.
It was made from a compressed film prepared in a Carver press by subjecting it to a compression force of 12,000 pounds (gauge) at 350° for 1 minute. The film was cooled under pressure with cold water circulating through the platen. The ophthalmic inserts were then individually cut from the film with a punch. Place each insert into the vial,
It was then placed in a humidity cabinet (88% RH at 30°C) for 2-4 days. After removing from the humidity cabinet, the vial was stoppered and then covered with a lid. The vial containing the hydrate insert was then autoclaved at 250°C for 1/2 hour. The solid inserts of the present invention are highly suitable for use by patients in pathogen-free conditions. It is therefore preferable to sterilize the insert and ensure it against recontamination, and sterilization preferably takes place after packaging. The best way to sterilize is
The use of ionizing radiation includes cobalt-60 or radiation emitting high-energy electron beams. The following examples illustrate methods for making improved ophthalmic suspension compositions of the present invention. Example 63 The following materials were mixed in a 1250 ml bottle: 6-6-20 ml of drug in sufficient quantity to yield a concentration of 10 mg per ml in the final sample, taking into account the 3.0% average determined earlier.
(2-sulfamoylbenzo[b]thienyl)2,
2-dimethylpropionate 24g, sodium bisulfite 0.4g, NaCl 12g and water 28ml (180ml)
in). This mixture () was autoclaved for 30 minutes at 15 psig and 121°C. Separately, 3 g of hydroxyethyl cellulose () in 720 ml of water and 0.4 g of lecithin in 80 ml of water () were autoclaved at 121° C. for 30 minutes. Next, () was mixed with () for 2 hours, and the resulting mixture was injected into (). A further mixture () was prepared from 20 g of sorbitol, 2.36 ml of benzalkonium chloride, 10 g of disodium edetate and water resulting in a final solution volume of 900 ml. then () (), () and ()
was added to the mixture in sufficient quantity to yield a total of 1.8. Next, a 1.8 mixture of and was taken and homogenized using a homogenizer at 2000 psig. Benzyl alcohol/β-phenyl-ethyl alcohol was then prepared by mixing the stock solution with polyoxyethylene (20) sorbitan monooleate and 50 ml of each alcohol by dissolving 3 g of the material in 100 ml of water. Varying amounts of the two stock solutions were then added to each of the four different samples into four 90 ml aliquots of the homogenized mixture of (), (), () and () prepared as described above. Added with enough water to give a total volume of 100ml. Other formulations of oil vehicles and ointments are illustrated in the following examples. Example 64 Solution composition 6-(2-sulfamoylbenzo[b]thienyl)
2,2-dimethylpropionate 0.1 mg Peanut oil qsad. 0.10 mg The solution was sterilized by filtering through a sterile filter. Example 65 6-(2-sulfamoylbenzo[b]thienyl) cyclopentane acetate 0.5 g Vaseline qsad·1 g The compound and petrolatum were mixed aseptically.
Claims (1)
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ããã¯å»è¬çã«èš±å®¹ãåŸãå¡©ã®è£œé æ¹æ³ã[Claims] 1 Structural formula: or an ophthalmologically or pharmaceutically usable salt thereof. [ wherein, X is hydrogen, halo or hydroxy; [Formula] or and Z is a -O-, e âOâR 2 â, (In the formula, X is 0-2.) h -O-R 2 -O-, or and R 1 is a straight or branched C 1-9 alkylene optionally substituted with one or more halo or hydroxy or
C 2-6 alkenylene, R 2 is C 1-3 alkylene optionally substituted with hydroxy, R 3 and R 4 are each independently hydrogen,
Hydroxy, C 1-5 alkyl or phenyl
C 1-3 alkyl. Note that the right end of the above formula aj is bonded to the benzene ring of formula (1). ); or oxazolidylmethyloxy optionally substituted with 2 oxo and/or C 1-5 alkyl,
glycidyloxy, morpholinylmethyl,
A group selected from benzyloxyethyl, oxolanyl optionally substituted with C 1-5 alkyl, and imidazolyl optionally substituted with trifluoromethyl; () When X is halo, R is hydrogen , morpholino or hydroxy; () When X is hydroxy, R is (wherein M + is an ophthalmically acceptable cation selected from sodium, potassium, ammonium, tetra(C 1-4 alkyl)ammonium, pyridium, imidazolium, pralidoxime and thiamine); 2 3 C 1-5 alkoxy; or 4 hydroxy. ) 2 The compound according to claim 1, wherein R is in the 5 or 6 position. 3 X is hydrogen, R is HO-,
The compound according to claim 2, which is [Formula] [Formula] or R 3 R 4 N-. 4 The compound is 5(or 6)-hydroxy-2-sulfamoylbenzo[b]thiophene, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) acetate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2,2-dimethylpropionate, 5(or 6)-(2-sulfamoylbenzo[b]
thienyl) 2-methylpropionate or 5(or 6)-(2-sulfamoylbenzo[b]
3. The compound according to claim 3, which is thienyl) 3-methoxycarbonylpropionate. 5. The compound according to claim 4, wherein the compound is 6-hydroxy-2-sulfamoylbenzo[b]thiophene. 6 By hydrolyzing the corresponding methyl ether, structural formula (1): (wherein X is hydrogen, halo or hydroxy; R is -OH) or an ophthalmically or pharmaceutically acceptable salt thereof. 7 The following compounds (In the formula, X is hydrogen, halo or hydroxy.)
R 0 -CO-X 1 (wherein R 0 is H-R 1 , [Formula] N or [Formula], X 1 is chloro, bromo, iodo, -OCOR 0 , -OCOCH 2 CH (CH 3 ) 2 or â
OCON(C 6 H 5 ) 2 ; R 1 is straight or branched C 1-9 alkylene or C 2-6 alkenylene optionally substituted with one or more halo or hydroxy and R 3 and R 4 are each independently hydrogen, hydroxy, C 1-5 alkyl or phenyl C 1-3
It is an alkyl. ), structural formula (1): (wherein X is as defined above and R is [Formula]) or an ophthalmically or pharmaceutically acceptable salt thereof. 8 Compound of the following formula ( wherein , _ straight-chain or branched C 1-9 alkylene or C 2-6 alkenylene optionally substituted with halo or hydroxy; R 3 and R 4 are each independently hydrogen, hydroxy, C 2-6 alkylene; 1-5 alkyl or phenyl C 1-3
It is an alkyl. ) by treatment with a chloroformate having the formula R 0 OCOOR 0 or a biscarbonate having the formula R 0 OCOOR 0. (wherein X is as defined above and R is
R 0 -O-CO-O-. ) or an ophthalmologically or pharmaceutically acceptable salt thereof. 9 Compound of the following formula (wherein, X is hydrogen, halo or hydroxy) to form a compound R 0 X 2 ( wherein R 0 is H-R 1 , [formula] [formula]; Benzene sulfonate; R 1
is a straight-chain or branched C 1-9 optionally substituted with one or more halo or hydroxy
alkylene or C 2-6 alkenylene; R 3 and R 4 are each independently hydrogen, hydroxy, C 1-5 alkyl or phenylC 1-3 alkyl. ), structural formula (1): (wherein X is as defined above and R is
R 0 -O-. ) or an ophthalmologically or pharmaceutically acceptable salt thereof. 10 Compound of the following formula (wherein X is hydrogen, halo or hydroxy, and R 0 is H-R 1 , [Formula] or [Formula]; straight-chain or branched C 1-9 alkylene or C 2-6 alkenylene; R 3 and R 4 are each independently hydrogen, hydroxy,
C 1-5 alkyl or phenylC 1-3 alkyl. )
By treating with ammonia, structural formula (1): (wherein X is as defined above and R is
R0 . ) or an ophthalmologically or pharmaceutically acceptable salt thereof.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50609283A | 1983-06-20 | 1983-06-20 | |
US506.092 | 1983-06-20 | ||
US547.191 | 1983-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6036481A JPS6036481A (en) | 1985-02-25 |
JPH0219837B2 true JPH0219837B2 (en) | 1990-05-07 |
Family
ID=24013144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12545484A Granted JPS6036481A (en) | 1983-06-20 | 1984-06-20 | 2-sulfamoylbenzo(b)thiophene derivative for treating increased intraocular pressure |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS6036481A (en) |
ZA (1) | ZA844616B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6140143A (en) * | 1992-02-10 | 2000-10-31 | Lucas Novasensor Inc. | Method of producing a buried boss diaphragm structure in silicon |
EP1864978A4 (en) | 2005-03-28 | 2009-07-01 | Toyama Chemical Co Ltd | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)- ethoxy)propyl)azetidin-3-ol or salts thereof |
JP4902247B2 (en) * | 2005-04-08 | 2012-03-21 | å¯å±±ååŠå·¥æ¥æ ªåŒäŒç€Ÿ | Novel production method of 2- (1-benzothiophen-5-yl) ethanol and its intermediate |
JP5082424B2 (en) * | 2005-12-22 | 2012-11-28 | äœåååŠæ ªåŒäŒç€Ÿ | 4-alkoxymethyl-2,3,5,6-tetrafluorotoluene, process for producing the same and use thereof |
KR20080077695A (en) * | 2005-12-22 | 2008-08-25 | ì€ë¯žë몚 ê°ê°êŸž ê°ë¶ìí€ê°ìŽì€ | Tetrafluorotoluene compound, method for producing same and use thereof |
-
1984
- 1984-06-19 ZA ZA844616A patent/ZA844616B/en unknown
- 1984-06-20 JP JP12545484A patent/JPS6036481A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6036481A (en) | 1985-02-25 |
ZA844616B (en) | 1986-02-26 |
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