TWI792440B - 製備拉坦前列烯布諾德(latanoprostene bunod)之方法及其中間物與包含其之組合物 - Google Patents
製備拉坦前列烯布諾德(latanoprostene bunod)之方法及其中間物與包含其之組合物 Download PDFInfo
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- TWI792440B TWI792440B TW110127088A TW110127088A TWI792440B TW I792440 B TWI792440 B TW I792440B TW 110127088 A TW110127088 A TW 110127088A TW 110127088 A TW110127088 A TW 110127088A TW I792440 B TWI792440 B TW I792440B
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- 239000000203 mixture Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 37
- LOVMMUBRQUFEAH-UIEAZXIASA-N Latanoprostene bunod Chemical compound C([C@@H](O)CCC=1C=CC=CC=1)C[C@H]1[C@H](O)C[C@H](O)[C@@H]1C\C=C/CCCC(=O)OCCCCO[N+]([O-])=O LOVMMUBRQUFEAH-UIEAZXIASA-N 0.000 title claims abstract description 8
- 229950010607 latanoprostene bunod Drugs 0.000 title claims abstract description 7
- 238000002360 preparation method Methods 0.000 title description 8
- 229960001160 latanoprost Drugs 0.000 claims description 91
- GGXICVAJURFBLW-CEYXHVGTSA-N latanoprost Chemical compound CC(C)OC(=O)CCC\C=C/C[C@H]1[C@@H](O)C[C@@H](O)[C@@H]1CC[C@@H](O)CCC1=CC=CC=C1 GGXICVAJURFBLW-CEYXHVGTSA-N 0.000 claims description 86
- 150000001875 compounds Chemical class 0.000 claims description 78
- 239000000539 dimer Substances 0.000 claims description 29
- QELUAJBXJAWSRC-UHFFFAOYSA-N 4-nitrooxybutyl nitrate Chemical compound [O-][N+](=O)OCCCCO[N+]([O-])=O QELUAJBXJAWSRC-UHFFFAOYSA-N 0.000 claims description 24
- HNPFPERDNWXAGS-LZCJLJQNSA-N (e)-7-[3,5-dihydroxy-2-(3-hydroxy-5-phenylpentyl)cyclopentyl]hept-5-enoic acid Chemical compound C=1C=CC=CC=1CCC(O)CCC1C(O)CC(O)C1C\C=C\CCCC(O)=O HNPFPERDNWXAGS-LZCJLJQNSA-N 0.000 claims description 18
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 10
- 239000013557 residual solvent Substances 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 238000006884 silylation reaction Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005828 desilylation reaction Methods 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 71
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 30
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 24
- 239000012535 impurity Substances 0.000 description 19
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 16
- 238000004587 chromatography analysis Methods 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 238000004128 high performance liquid chromatography Methods 0.000 description 11
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 8
- 235000019341 magnesium sulphate Nutrition 0.000 description 8
- 150000003180 prostaglandins Chemical class 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 7
- 229910002027 silica gel Inorganic materials 0.000 description 7
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 239000012044 organic layer Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000004440 column chromatography Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 238000006317 isomerization reaction Methods 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- -1 1,4-butanediol diol Chemical class 0.000 description 3
- IKDHVMDABUMCLO-UHFFFAOYSA-N 4-bromobutyl nitrate Chemical compound [O-][N+](=O)OCCCCBr IKDHVMDABUMCLO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N 1,4-butanediol Substances OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- SGUVLZREKBPKCE-UHFFFAOYSA-N 1,5-diazabicyclo[4.3.0]-non-5-ene Chemical compound C1CCN=C2CCCN21 SGUVLZREKBPKCE-UHFFFAOYSA-N 0.000 description 2
- 101710134784 Agnoprotein Proteins 0.000 description 2
- JARXNQUBGBXALE-UHFFFAOYSA-N C(C)[SiH](CC)CC.Cl Chemical compound C(C)[SiH](CC)CC.Cl JARXNQUBGBXALE-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 description 2
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 239000012454 non-polar solvent Substances 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- GGXICVAJURFBLW-RDSJPUOVSA-N propan-2-yl (e)-7-[(1r,2r,3r,5s)-3,5-dihydroxy-2-[(3r)-3-hydroxy-5-phenylpentyl]cyclopentyl]hept-5-enoate Chemical compound CC(C)OC(=O)CCC\C=C\C[C@H]1[C@@H](O)C[C@@H](O)[C@@H]1CC[C@@H](O)CCC1=CC=CC=C1 GGXICVAJURFBLW-RDSJPUOVSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ULTHEAFYOOPTTB-UHFFFAOYSA-N 1,4-dibromobutane Chemical compound BrCCCCBr ULTHEAFYOOPTTB-UHFFFAOYSA-N 0.000 description 1
- NMVDXVOTTOBFPJ-UHFFFAOYSA-N CCCCCCCC[SiH](C)C.Cl Chemical compound CCCCCCCC[SiH](C)C.Cl NMVDXVOTTOBFPJ-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- 206010030043 Ocular hypertension Diseases 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- HXLVDKGPVGFXTH-UHFFFAOYSA-N butyl(dimethyl)silane Chemical group CCCC[SiH](C)C HXLVDKGPVGFXTH-UHFFFAOYSA-N 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 229940054534 ophthalmic solution Drugs 0.000 description 1
- 239000002997 ophthalmic solution Substances 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- JABYJIQOLGWMQW-UHFFFAOYSA-N undec-4-ene Chemical compound CCCCCCC=CCCC JABYJIQOLGWMQW-UHFFFAOYSA-N 0.000 description 1
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- C07C201/02—Preparation of esters of nitric acid
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- C07C69/73—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
- C07C69/732—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids of unsaturated hydroxy carboxylic acids
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Abstract
本發明係關於用於製備拉坦前列烯布諾德之方法及由該方法製備之中間物。本發明亦係關於包含高純度拉坦前列烯布諾德之拉坦前列烯布諾德組合物。
Description
本發明係關於用於製備拉坦前列烯布諾德之方法,及其中間物與包含其之組合物。
WO 2005/068421及WO 2017/093771均揭示藉由使拉坦前列素與硝酸4-溴丁酯反應製備拉坦前列烯布諾德之方法,如流程1中所示。然而,在方法期間將產生各種雜質,包括來自拉坦前列素酸之異構體及副產物,諸如化合物LB-Br及化合物LB-I:流程1
然而,在LB-Br與AgNO3之反應中始終存在一定量之未反應化合物LB-Br,即使該反應在高溫下進行較長時間。此外,5,6-反式拉坦前列烯布諾德亦將在高溫長期反應期間經由拉坦前列烯布諾德異構化而產生。因此,WO 2019/031774之方法不僅具有雜質化合物LB-Br,且亦具有5,6-反式拉坦前列烯布諾德之問題。
因為拉坦前列烯布諾德呈油狀形式,所以其雜質無法藉由結晶純化來移除,但也許可能藉由層析來移除。然而,由於化合物LB-Br
及化合物LB-I之極性非常類似於拉坦前列烯布諾德之極性(TLC △Rf<0.1),且5,6-反式拉坦前列烯布諾德之極性幾乎與拉坦前列烯布諾德之極性相同,藉由層析仍極難以自拉坦前列烯布諾德移除雜質化合物LB-Br、化合物LB-I及5,6-反式拉坦前列烯布諾德,即使可能,成本將會非常高。
WO 2017/093771揭示使用具有大量(100倍量)特定矽膠之重力矽膠管柱層析來純化粗製拉坦前列烯布諾德。在純化之後,可部分移除5,6-反式拉坦前列烯布諾德及其他副產物。然而,為了降低工業中純化之高成本,最好是在製造拉坦前列烯布諾德期間,避免或減少難以移除或分離之雜質的產生,諸如化合物LB-Br、化合物LB-I及5,6-反式拉坦前列烯布諾德。
本發明之一方面提供一種用於製備拉坦前列烯布諾德,而不產生前述難以移除或分離化合物LB-Br或化合物LB-I,且使5,6-反式拉坦前列烯布諾德減到最少之有效且經濟的方法。
本發明之一實施態樣係關於一種用於製備拉坦前列烯布諾德之新穎方法,其包含使拉坦前列素酸與1,4-丁二醇二硝酸酯反應之步驟。
其中Ra、Rb及Rc各自獨立地為C1-8烷基、苯基、苯甲基、經取代之苯基或經取代之苯甲基;且接著使所得式LB-3Si之化合物脫矽烷化,以形成拉坦前列烯布諾德,其純度高於粗製拉坦前列烯布諾德。
本發明之一方面提供一種如上文所定義之式LB-3Si之新穎中間物。
本發明另一方面提供一種粗製拉坦前列烯布諾德組合物,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包含含量大於0.1%且小於5%之如上文所定義之化合物LB-二聚體,大於0.1%且小於3.5%之拉坦前列烯布諾德的5,6-反式異構體,及小於0.5%之15S-拉坦前列烯布諾德。
本發明之另一方面提供一種粗製拉坦前列烯布諾德組合物,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包含含量大於0.1%且小於5%之如上文所定義之化合物LB-二聚體,大於0.01%且小於0.1%之拉坦前列烯布諾德的5,6-反式異構體,及小於0.1%之15S-拉坦前列烯布諾德。
本發明之又一方面提供一種純化拉坦前列烯布諾德組合物,其包含含量大於0%且小於0.1%之如上文所定義之化合物LB-二聚體,大於0.1%且小於3.5%之拉坦前列烯布諾德的5,6-反式異構體,及小於0.5%之15S-拉坦前列烯布諾德。
本發明之再一方面提供一種純化拉坦前列烯布諾德組合物,其包含含量大於0%且小於0.1%之如上文所定義之化合物LB-二聚體,大於0.01%且小於0.1%之拉坦前列烯布諾德的5,6-反式異構體,及小於0.1%之15S-拉坦前列烯布諾德。
本發明提供一種用於製備拉坦前列烯布諾德之方法,其包含使拉坦前列素酸與1,4-丁二醇二硝酸酯反應。
在一些實施態樣中,水解反應可使用氫氧化鈉、氫氧化鉀、單水合氫氧化鋰或其類似物進行,尤其較佳使用單水合氫氧化鋰進行。此時,乙醇、甲醇、異丙醇、水或其混合溶劑可用作反應溶劑,且甲醇及水的混合溶劑尤其較佳。在一些實施態樣中,反應溫度較佳為室溫,且反應時間較佳為約1至20小時。
在一些實施態樣中,拉坦前列素酸可由拉坦前列素製備。一般而言,滿足USP要求之市售拉坦前列素含有約3.5%之5,6-反式異構體及約0.5%之15S-異構體。因此,藉由水解由市售拉坦前列素所製得之拉坦前列素酸亦含有約3.5%之5,6-反式異構體及約0.5%之15S-異構體。由此製備之拉坦前列素酸在本說明書中表示為拉坦前列素酸-A。
在一些實施態樣中,拉坦前列素酸可由拉坦前列素1,9-內酯製備。在本發明實施態樣中,使用揭示於US 9994543中之拉坦前列素1,9-內酯並經由水解製備拉坦前列素酸。由此製備之拉坦前列素酸實質上不含異構體且含有小於0.1%之5,6-反式異構體及0.1%之15S-異構體,且在本說明書中表示為拉坦前列素酸-B。
在一些實施態樣中,反應可在鹼存在下進行。適合鹼之實例包含(但不限於)1,5-二氮雜雙環[4.3.0]壬-5-烯(DBN)、1,8-二氮雜雙環[5.4.0]十一-7-烯(DBU)、氫氧化鈉及碳酸鉀,且尤其較佳使用1,5-二氮雜雙環[4.3.0]壬-5-烯(DBN)、1,8-二氮雜雙環[5.4.0]十一-7-烯(DBU)或碳酸鉀。
在一些實施態樣中,反應可在溶劑存在下進行。適合溶劑之實例包含(但不限於)丙酮、二氯甲烷、甲苯、四氫呋喃(THF)及二甲基甲醯胺(DMF),且尤其較佳使用二甲基甲醯胺進行反應。
在本發明中,1,4-丁二醇二硝酸酯的用量不受特定限制。
在一些實施態樣中,1,4-丁二醇二硝酸酯可以每一重量份拉坦前列素酸在約1至100重量份、較佳約3至30重量份、或約5至15重量份、且更佳約5至10重量份範圍內之量使用。
在一些實施態樣中,反應溫度較佳為約20至80℃、約20至70℃、約20至60℃、約20至50℃、約20至40℃或約20至30℃。反應時間視反應溫度而變化,且其較佳地為約1至6小時、約1至5小時、約1至4小時、約1至3小時或約1至2小時。
如以上流程4中所示,製備拉坦前列烯布諾德之方法進一步包含形成式LB-二聚體之副產物。
在一些實施態樣中,在本發明方法中使用拉坦前列素酸-A作為起始物質可提供粗製拉坦前列烯布諾德組合物A,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包括含量大於約0.1%且小於約5%之化合物LB-二聚體、大於約0.1%且小於約3.5%之拉坦前列烯布諾德之5,6-反式異構體,以及小於約0.5%之15S-拉坦前列烯布諾德。在一些實施態樣中,15S-拉坦前列烯布諾德及拉坦前列烯布諾德之5,6-反式異構體分別由在拉坦前列素酸-A之起始物質中的15S-異構體及5,6-反式異構體產生。在一些實施態樣中,粗製拉坦前列烯布諾德組合物A不含有任何化合物LB-Br或化合物LB-I。
在一些實施態樣中,在本發明方法中使用拉坦前列素酸-B作為起始物質可提供粗製拉坦前列烯布諾德組合物B,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包括含量大於約0.1%且小於約5%之化合物LB-二聚體、大於約0.01%且小於約0.1%之拉坦前列烯布諾德之5,6-反式異構體,以及小於約0.1%之15S-拉坦前列烯布諾德。在一些實施態樣中,
15S-拉坦前列烯布諾德及拉坦前列烯布諾德之5,6-反式異構體分別由在拉坦前列素酸-B之起始物質中的15S-異構體及5,6-反式異構體產生。在一些實施態樣中,粗製拉坦前列烯布諾德組合物B不含有任何化合物LB-Br或化合物LB-I。
在本發明方法中,儘管粗製拉坦前列烯布諾德組合物A及B各自包括過量之1,4-丁二醇二硝酸酯之反應試劑(TLC △ Rf>0.7,33%己烷/乙酸乙酯)及化合物LB-二聚體之副產物(TLC △ Rf>0.5,100%乙酸乙酯),但過量反應試劑及副產物可以輕易地藉由一般或簡單的層析法移除。然而,在先前技術方法,諸如WO 2005/068421、WO 2017/093771及WO 2019/031774所揭示之方法中,會產生TLC △ Rf小於0.1之雜質,諸如化合物LB-Br(TLC △ Rf<0.04,33%己烷/乙酸乙酯)、化合物LB-I(TLC △Rf<0.07,33%己烷/乙酸乙酯)及拉坦前列烯布諾德之5,6-反式異構體(TLC △Rf<0.01,33%己烷/乙酸乙酯),該等雜質很難藉由一般層析移除,而僅能經由困難或複雜的層析移除。因此,本發明方法比先前技術方法更簡單且更具成本效益。
除過量之1,4-丁二醇二硝酸酯之反應試劑及化合物LB-二聚體之副產物以外,粗製拉坦前列烯布諾德進一步包含少量由所述試劑或溶劑所產生之高極性非前列腺素雜質及低極性非前列腺素雜質。在本發明方法中,僅需使用一次一般的層析方法來純化粗製拉坦前列烯布諾德,就可以同時移除過量1,4-丁二醇二硝酸酯、化合物LB-二聚體、高極性非前列腺素雜質及低極性非前列腺素雜質。
在一些實施態樣中,粗製拉坦前列烯布諾德之所有羥基可藉由矽烷基保護基保護,以形成具有低極性之經保護的拉坦前列烯布諾
德。隨後,可視情況藉由一般的層析來純化具有低極性之經保護的拉坦前列烯布諾德以移除高極性非前列腺素雜質。之後,使經保護之拉坦前列烯布諾德脫矽烷化以形成具有高極性之粗製拉坦前列烯布諾德,其不含任何高極性非前列腺素雜質。接著,具有高極性之粗製拉坦前列烯布諾德僅需使用一次一般的層析方法來進一步純化以移除低極性非前列腺素雜質。
適用於本發明方法之一般層析為此項技術中已知的且廣泛常用的方法。在本發明方法中,一般層析可用於純化粗製拉坦前列烯布諾德或粗製經保護的拉坦前列烯布諾德。舉例而言,具有共同粒度為63μm至200μm或50μm至150μm之成本低的不規則矽膠之管柱層析可用於有效移除過量反應試劑、副產物及非前列腺素雜質。此外,只要矽膠之用量為待分離物質之含量的約(或超過)3倍,即可將上述雜質移除至小於約0.1%。較佳地,矽膠之用量為待分離物質之含量的約5至50倍。更佳地,矽膠之用量為待分離物質之含量的約5至20倍。
在一些實施態樣中,非極性與極性溶劑之雙組分混合物可作為溶離劑施加於各種組合物中。雙組分混合物中的非極性溶劑之實例包括(但不限於)烴、鹵化脂族烴及醚型溶劑,諸如戊烷、己烷、庚烷、環己烷及二氯甲烷及二異丙基醚。雙組分混合物中的極性溶劑之實例包括(但不限於)含有直鏈或分支鏈烷基之醇類、酯類或酮類溶劑。
在一些實施態樣中,粗製布諾-拉坦前列素可經由矽烷化及脫矽烷化來純化。在一些實施例中,粗製拉坦前列烯布諾德可藉由用包含殘基-SiRaRbRc之矽烷化劑使拉坦前列烯布諾德中之所有羥基矽烷化以形成式LB-3Si之粗製化合物來進行純化:
其中Ra、Rb及Rc各自獨立地為C1-8烷基、苯基、苯甲基、經取代苯基或經取代苯甲基。在一些實施例中,矽烷化劑具有式XSiRaRbRc,其中X為鹵素,諸如F、Cl或Br;且Ra、Rb及Rc各自獨立地為C1-8烷基、苯基、苯甲基、經取代苯基或經取代苯甲基。根據本發明之一實施例,適用於純化反應之矽烷化劑係選自由以下組成之群:氯化三甲基矽烷、氯化三乙基矽烷、氯化二甲基(辛基)矽烷及氯化三級丁基二甲基矽烷。
在一些實施態樣中,式LB-3Si粗製化合物可藉由一般層析來純化。由於式LB-3Si之化合物具有極低極性,因此具有較高極性之雜質(例如自諸如DMF之溶劑及自諸如1,4-丁二醇二硝酸酯之試劑產生的雜質)可輕易地藉由使用簡單層析來移除。接著,使所得式LB-3Si之化合物脫矽烷化,形成另一粗製拉坦前列烯布諾德。之後,可藉由一般層析來純化另一粗製拉坦前列烯布諾德以形成具有改良純度之拉坦前列烯布諾德。在一些實施態樣中,進行矽烷化及脫矽烷化反應之條件為熟習此項技術者顯而易知的條件。
在一些實施態樣中,可視情況對式LB-3Si之粗製化合物進行純化。在本發明方法中,具有較高極性之雜質可以減少至小於0.1%以符合法規要求,即使是在當僅使用一般層析來純化粗製拉坦前列烯布諾德,亦即不純化式LB-3Si之化合物的情況下。在一些實施態樣中,藉由
一般層析另外純化式LB-3Si之化合物,可將具有較高極性之雜質降低至小於0.1%或甚至小於高效液相層析(HPLC)之檢測極限。
在一些實施態樣中,藉由使用拉坦前列素酸-A作為起始物質可得到一種經純化之拉坦前列烯布諾德組合物C,其包括含量大於約0%且小於約0.1%之化合物LB-二聚體,大於約0.1%且小於約3.5%之拉坦前列烯布諾德的5,6-反式異構體,及小於約0.5%之15S-拉坦前列烯布諾德。在一些實施態樣中,可藉由純化粗製拉坦前列烯布諾德組合物A來獲得經純化之拉坦前列烯布諾德組合物C。在一些實施態樣中,經純化之拉坦前列烯布諾德組合物C不含有任何化合物LB-Br或化合物LB-I。
在一些實施態樣中,藉由使用拉坦前列素酸-B作為起始物質可得到一種經純化之拉坦前列烯布諾德組合物D,其包括含量大於約0%且小於約0.1%之化合物LB-二聚體,大於約0.01%且小於約0.1%之拉坦前列烯布諾德的5,6-反式異構體,及小於約0.1%之15S-拉坦前列烯布諾德。在一些實施態樣中,可藉由純化粗製拉坦前列烯布諾德組合物B來獲得經純化之拉坦前列烯布諾德組合物D。在一些實施態樣中,經純化之拉坦前列烯布諾德組合物D不含有任何化合物LB-Br或化合物LB-I。
應理解,本文中所描述之特定實施例藉助於說明方式顯示且不顯示為本發明之限制。可在不背離本發明之範疇的情況下在各種實施例中採用本發明之主要特徵。熟習此項技術者至多使用常規實驗即認識到或能夠確定本文所描述之特定程序的諸多等效物。此類等效物視為在本發明之範疇內且由申請專利範圍所涵蓋。
本說明書中提及之所有公開案及專利申請案指示本發明所屬本領域中熟習此項技術者之技術水準。所有公開案及專利均以引用之方
式併入本文中,如同各個別公開案或專利申請案具體地且獨立地指示為以引用之方式併入一般。
當與術語「包含」結合用於申請專利範圍及/或說明書中時,使用詞語「一(a)」或「一(an)」可意謂「一個(one)」,但其亦與「一或多個」、「至少一個」及「一個或超過一個」之含義相符。儘管本發明支持涉及僅替代及「及/或」之定義,但除非明確指示為僅替代或替代相互排斥,否則術語「或」在申請專利範圍中之使用用於意謂「及/或」。在本申請案通篇中,術語「約」用於指示值包括裝置、用以測定該值之方法之固有誤差變化或研究個體當中存在的變化。
如本說明書及申請專利範圍中所用,詞語「包含(comprising)」(及包含之任何形式,諸如「包含(comprise)」及「包含(comprises)」)、「具有(having)」(及具有之任何形式,諸如「具有(have)」及「具有(has)」)、「包括(including)」(及包括之任何形式,諸如「包括(includes)」及「包括(include)」)或「含有(containing)」(及含有之任何形式,諸如「含有(contains)」及「含有(contain)」為包括性或開放的且並不排除額外未列出之要素或方法步驟。
儘管在所述範圍內之最小值及最大值之前均加上詞語「約」,但除非另外明確指示,否則在本申請案中指定的多個定量值中的數值之使用係陳述為近似值。以此方式,所述數值之微弱變化可用於實現與所述數值實質上相同的結果。此外,本揭示案之範圍意欲為連續的範圍,包含在所述最小值與最大值之間的每一數值以及可藉由此類數值所形成的任何範圍。亦揭示於本文中的為可藉由將所陳述數值劃分成任何其他所陳述數值所形成的任何及全部比率(及任何此類比率之範圍)。相應地,
熟習此項技術者將瞭解許多該等比率、範圍及比率之範圍可明顯的來源於本文中所提出的數值,且在全部實例中該等比率、範圍及比率之範圍代表本發明之多個實施例。
本文中所揭示及主張之所有化合物及/或方法可根據本發明在無不當實驗的情況下製成及執行。雖然已根據較佳實施例描述本發明之化合物及方法,但熟習此項技術者應清楚變化可在不背離本發明之概念、精神及範疇的情況下應用於本文所描述之組合物及/或方法中及步驟中或方法之步驟順序中。為熟習此項技術者顯而易知之全部該等類似取代及修改均視為在如由所附申請專利範圍所定義之本發明之精神、範疇及概念內。
用3N氫氧化鉀水溶液(3.85mL)處理拉坦前列素(含有2.38% 5,6-反式異構體及0.05% 15S-異構體)(1.0g,2.31mmol)於異丙醇(8mL)中之溶液。將混合物在50至55℃下攪拌2小時,冷卻,且隨後用3N鹽酸水溶液調節至pH 8.0至8.3。隨後,在減壓下移除大部分溶劑。用碳酸氫鈉飽和水溶液(5mL)及乙酸乙酯(2mL)稀釋殘餘物。混合物接著在室溫下攪拌5分鐘,且分別收集有機相及水相。在室溫下用3N鹽酸水溶液將水層調節至pH 3.0至3.2且用乙酸乙酯(20mL)萃取。有機層經硫酸鎂(3g)乾燥且在減壓下濃縮,得到1.1g粗製拉坦前列素酸-A。產物之HPLC分析顯示其含有2.34% 5,6-反式異構體及0.05% 15S-異構體。
用3N氫氧化鉀水溶液(100mL)處理藉由US 9,994,543所揭示之方法獲得的拉坦前列素1,9-內酯(30.0g,0.08mol)於異丙醇(240mL)中之溶液。將混合物在50至55℃下攪拌2小時,冷卻,且隨後用3N鹽酸水溶液調節至pH 8.0至8.3。隨後,在減壓下移除大部分溶劑。用碳酸氫鈉飽和水溶液(150mL)及乙酸乙酯(60mL)稀釋殘餘物。混合物接著在室溫下攪拌5分鐘,且分別收集有機相及水相。在室溫下用3N鹽酸水溶液將水層調節至pH 3.0至3.2且用乙酸乙酯(500mL)萃取。將有機層經硫酸鎂(60g)乾燥且在減壓下濃縮,得到36.2g粗製拉坦前列素酸-B。產物之HPLC分析顯示未檢測到任何異構體。
1H-NMR(400MHz,CDCl3):δ 7.253-7.282(m,2H),7.157-7.194(m,3H),5.455-5.506(m,1H),5.342-5.394(m,1H),4.142-4.152(m,1H),3.936(m,1H),3.664-3.711(m,1H),2.754-2.813(m,1H),2.618-2.678(m,1H),2.327(t,2H),2.241(t,2H),2.133(q,2H),1.496-1.892(m,10H),1.307-1.382(m,2H)
13C-NMR(100MHz,CDCl3):δ 177.395,142.122,129.454,129.416,128.392,128.376,125.788,78.386,74.234,71.509,52.139,51.433,42.461,38.749,35.228,33.201,32.070,29.049,26.575,26.408,24.662
用K2CO3(206mg,1.49mmol)、KI(77mg,0.46mmol)及硝酸4-溴丁酯(805mg,25% w/w,二氯甲烷中,1.02mmol)處理粗製
拉坦前列素酸-B(213mg,0.54mmol)於DMF(5mL)中之溶液。接著在45至50℃下在氮氣氛圍下攪拌混合物2小時(TLC監測)。將混合物用乙酸乙酯(100mL)稀釋,用鹽水(2×50mL)洗滌,經硫酸鎂乾燥,且在減壓下濃縮,得到0.43g粗製拉坦前列烯布諾德。粗製拉坦前列烯布諾德之HPLC分析顯示,其含有4.59%化合物LB-Br及0.91%化合物LB-I,未檢測到任何5,6-反式拉坦前列烯布諾德及15S-拉坦前列烯布諾德。
拉坦前列烯布諾德:TLC:Rf 0.205(33%己烷/乙酸乙酯);Rf 0.705(100%乙酸乙酯)
1H-NMR(400MHz,CDCl3):δ 7.245-7.281(m,2H),7.146-7.192(m,3H),5.445-5.490(m,1H),5.331-5.427(m,1H),4.451(t,2H),4.130(m,1H),4.078(t,2H),3.927(m,1H),3.637(m,1H),3.073(s,1H),2.613-2.781(m,3H),2.263-2.341(m,3H),2.027-2.208(m,4H),1.495-1.862(m,14H),1.294-1.391(m,2H)
13C-NMR(100MHz,CDCl3):δ 173.877,142.113,129.514,129.331,128.390,125.810,78.676,74.592,72.619,71.298,63.473,52.733,51.799,42.494,39.025,35.762,33.583,32.103,29.583,26.889,26.600,24.938,24.824,23.617
化合物LB-Br:TLC:Rf 0.239(33%己烷/乙酸乙酯)
1H-NMR(400MHz,CDCl3):δ 7.162-7.298(m,5H),5.351-5.478(m,2H),4.158(m,1H),4.091(t,2H),3.946(m,1H),3.664(m,1H),3.422(t,2H),2.634-2.829(m,3H),2.299-2.361(m,4H),
2.091-2.227(m,3H),1.510-2.227(m,15H),1.252-1.419(m,2H)
13C-NMR(100MHz,CDCl3):δ 173.877,142.052,129.468,129.430,128.413,128.390,125.832,78.797,74.744,71.313,63.442,52.907,51.883,42.532,39.063,35.784,33.614,33.052,32.111,29.629,29.287,27.299,26.942,26.631,24.839
化合物LB-I:TLC:Rf 0.273(33%己烷/乙酸乙酯)
1H-NMR(400MHz,CDCl3):δ 7.150-7.286(m,5H),5.355-5.474(m,2H),4.136(m,1H),4.069(t,2H),3.930(m,1H),3.644-3.661(m,1H),3.185(t,2H),2.619-2.805(m,3H),2.268-2.324(m,3H),2.808-2.214(m,4H),1.501-1.910(m,15H),1.350-1.373(m,2H)
13C-NMR(100MHz,CDCl3):δ 173.915,142.105,129.476,129.400,128.398,125.810,78.691,74.592,71.298,63.237,52.756,51.814,42.532,39.033,35.762,33.636,32.118,29.986,29.583,29.538,26.889,26.623,24.847,5.918
將化合物LB-Br(0.5g,0.95mmol)溶解於乙腈(7.5mL)中,添加硝酸銀(0.29g,1.71mmol),且隨後加熱混合物且在約35至40℃下攪拌約55小時。以HPLC觀測反應進程且顯示於表1中。
如表1中所示,在反應55小時之後,仍存在0.35%未反應之化合物LB-Br,但已由拉坦前列烯布諾德之異構化產生0.77% 5,6-反式拉坦前列烯布諾德。由於與化合物LB-Br相比,更難以藉由層析移除5,6-反式拉坦前列烯布諾德,故持續反應不會增加產率,而是僅提高純化成本。
用K2CO3(1.17g,8.47mmol)及1,4-丁二醇二硝酸酯(7.61g,42.25mmol)處理粗製拉坦前列素酸-A(5-反式異構體>2%)(1.1g,2.82mmol)於DMF(6mL)中之溶液。混合物接著在60至65℃下在氮氣氛圍下攪拌2.5小時(TLC監測),且接著冷卻至室溫。反應混合物用乙酸乙酯(20mL)稀釋,用冰水(2×15mL)洗滌,經硫酸鎂(3g)乾燥且在減壓下濃縮,得到9.8g粗製拉坦前列烯布諾德及過量1,4-丁二醇二硝酸酯。粗製拉坦前列烯布諾德組合物之HPLC分析顯示,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包含1.4%化合物LB-二聚體、2.38%拉坦前列烯布諾德之5,6-反式異構體及0.05% 15S-拉坦前列烯布諾德。藉由具有5倍量矽膠之管柱層析法移除過量1,4-丁二醇二硝酸酯及化合物LB-二聚體,且接著在
減壓下濃縮以提供1.2g經純化之拉坦前列烯布諾德(83.9%產率)。經純化之拉坦前列烯布諾德組合物之HPLC分析顯示,其包含0.001%化合物LB-二聚體、2.4%拉坦前列烯布諾德之5,6-反式異構體及0.06% 15S-拉坦前列烯布諾德。
拉坦前列烯布諾德:TLC:Rf 0.205(33%己烷/乙酸乙酯);Rf 0.705(100%乙酸乙酯)
1H-NMR(400MHz,CDCl3):δ 7.245-7.282(m,2H),7.146-7.192(m,3H),5.446-5.491(m,1H),5.331-5.427(m,1H),4.452(t,2H),4.130(m,1H),4.079(t,2H),3.927(m,1H),3.639(m,1H),3.042(s,1H),2.610-2.801(m,3H),2.264-2.343(m,3H),2.059-2.209(m,4H),1.495-1.863(m,14H),1.294-1.393(m,2H)
13C-NMR(100MHz,CDCl3):δ 173.870,142.113,129.514,129.331,128.390,125.810,78.683,74.600,72.619,71.298,63.465,52.740,51.807,42.501,39.025,35.762,33.583,32.103,29.583,26.889,26.600,24.938,24.824,23.625
化合物LB-二聚體:TLC:Rf 0.0(33%己烷/乙酸乙酯);Rf 0.193(100%乙酸乙酯)
1H-NMR(400MHz,CDCl3):δ 7.240-7.277(m,2H),7.142-7.190(m,3H),5.421-5.483(m,1H),5.325-5.387(m,1H),4.068-4.117(m,3H),3.919(m,1H),3.604-3.663(m,1H),2.611-2.816(m,3H),2.264-2.342(m,4H),2.030-2.210(m,4H),1.465-1.902(m,12H),
1.228-1.381(m,2H)
13C-NMR(100MHz,CDCl3):δ 174.014,142.151,129.536,129.347,128.390,125.787,78.622,74.463,71.268,63.921,52.649,51.739,42.524,39.010,35.739,33.629,32.118,29.538,26.858,26.593,25.272,24.839
用K2CO3(37.16g,0.27mol)及1,4-丁二醇二硝酸酯(242.15g,1.34mol)處理粗製拉坦前列素酸-B(35.00g,0.09mol)於DMF(175mL)中之溶液。混合物接著在60至65℃下在氮氣氛圍下攪拌2.5小時(TLC監測)且接著冷卻至室溫。反應混合物用乙酸乙酯(600mL)稀釋,用冰水(2x530mL)洗滌,經硫酸鎂(30g)乾燥且在減壓下濃縮,得到268g粗製拉坦前列烯布諾德及過量1,4-丁二醇二硝酸酯。粗製拉坦前列烯布諾德組合物之HPLC分析顯示,除殘餘溶劑及1,4-丁二醇二硝酸酯以外,其包含1.4%化合物LB-二聚體及0.02%拉坦前列烯布諾德之5,6-反式異構體,且未檢測到任何15S-拉坦前列烯布諾德。藉由具有5倍量矽膠之管柱層析法移除過量1,4-丁二醇二硝酸酯及化合物LB-二聚體,且接著在減壓下濃縮以提供40.94g經純化之拉坦前列烯布諾德(90.0%產率)。對經純化之拉坦前列烯布諾德組合物之HPLC分析顯示,其包含0.0003%化合物LB-二聚體及0.03%拉坦前列烯布諾德之5,6-反式異構體,且未檢測到任何15S-拉坦前列烯布諾德。純度:>99.90%。
用K2CO3(31.85g,0.23mol)及1,4-丁二醇二硝酸酯(207g)處理粗製拉坦前列素酸-B(30.0g,76.8mmol)於DMF(150mL)中之溶液。接著在60至65℃下在氮氣氛圍下攪拌混合物2.5小時(TLC監測)。冷卻反應混合物至室溫。將混合物用乙酸乙酯(500mL)稀釋,用冰水(2×500mL)洗滌,經硫酸鎂乾燥,且在減壓下濃縮,得到粗製拉坦前列烯布諾德。在室溫下,將氯化三乙基矽烷(47.60g,0.32mol)添加至粗製拉坦前列烯布諾德及咪唑(26.83g,0.39mol)於乙酸乙酯(400mL)中之溶液中,且攪拌混合物0.5小時(TLC監測)。將碳酸氫鈉飽和水溶液(200mL)傾入反應混合物中,且攪拌混合物5分鐘。分離有機層且用碳酸氫鈉飽和水溶液萃取。經硫酸鎂乾燥有機層,濾出固體,且在減壓下濃縮濾液,得到粗製化合物LB-3Si。藉由管柱層析純化粗製化合物LB-3Si,得到65.2g化合物LB-3Si。
化合物LB-3Si:(Z)-7-((1R,2R,3R,5S)-2-((R)-5-苯基-((三乙基矽烷基)氧基)戊基)-3,5-雙((三乙基矽烷基)氧基)環戊基)庚-5-烯酸4-(硝氧基)丁酯
1H-NMR(400MHz,CDCl3):δ 7.250-7.286(m,2H),7.147-7.181(m,3H),5.422-5.484(m,1H),5.308-5.371(m,1H),4.457(t,2H),4.069-4.108(m,3H),3.665-3.758(m,2H),2.566-2.718(m,2H),2.224-2.314(m,3H),2.061-2.183(m,4H),1.745-1.822(m,8H),1.590-1.697(m,2H),1.458-1.520(m,2H),1.254-1.412(m,3H),0.930-0.987(m,27H),0.535-0.634(m,18H)
13C-NMR(100MHz,CDCl3):δ 173.566,142.675,
130.295,128.739,128.299,128.269,125.620,76.186,72.566,72.338,71.746,63.199,50.281,48.103,44.194,39.124,34.471,33.743,31.716,28.065,26.722,25.864,24.991,24.931,23.625,6.988,6.881,6.866,5.166,4.954,4.923\
將單水合對甲苯磺酸(1g)添加至化合物LB-3Si於甲醇(250mL)中之攪拌溶液中。在室溫下攪拌混合物2小時(TLC監測)。隨後,用飽和碳酸氫鈉水溶液驟冷反應混合物,且在減壓下移除甲醇。殘餘物用乙酸乙酯萃取。分離有機層。用乙酸乙酯萃取水層。經硫酸鎂乾燥合併之有機層,過濾且減壓濃縮,得到粗製拉坦前列烯布諾德。粗製拉坦前列烯布諾德組合物之HPLC(Phenomenex Luna 5μm二氧化矽)分析顯示,其包含0.8%化合物LB-二聚體及0.02%拉坦前列烯布諾德之5,6-反式異構體,且未檢測到任何15S-拉坦前列烯布諾德。粗產物藉由快速管柱層析(flash column chromatography)進行進一步純化,獲得34.8g產物。經純化之拉坦前列烯布諾德組合物之HPLC分析顯示,其包含0.0001%化合物LB-二聚體及0.02%拉坦前列烯布諾德之5,6-反式異構體,且未檢測到任何15S-拉坦前列烯布諾德。純度:>99.95%。
Claims (9)
- 一種製備拉坦前列烯布諾德(latanoprostene bunod)之方法,其包含使拉坦前列素酸(latanoprost acid)與1,4-丁二醇二硝酸酯反應。
- 一種拉坦前列烯布諾德組合物,其包括拉坦前列烯布諾德、含量大於0.1%且小於5%之如請求項5之式LB-二聚體之化合物、大於0.1%且小於3.5%之拉坦前列烯布諾德的5,6-反式異構體及小於0.5%之15S-拉坦前列烯布諾德,以及殘餘溶劑及1,4-丁二醇二硝酸酯。
- 一種拉坦前列烯布諾德組合物,其包括拉坦前列烯布諾德、含量大於0.1%且小於5%之如請求項5之式LB-二聚體之化合物、大於0.01%且小於0.1%之拉坦前列烯布諾德的5,6-反式異構體及小於0.1%之量的15S-拉坦前列烯布諾德,以及殘餘溶劑及1,4-丁二醇二硝酸酯。
- 一種拉坦前列烯布諾德組合物,其包括拉坦前列烯布諾德、含量大於0%且小於0.1%之如請求項5之式LB-二聚體之化合物、大於0.1%且小於3.5%之拉坦前列烯布諾德的5,6-反式異構體,且含有小於0.5%之15S-拉坦前列烯布諾德。
- 一種拉坦前列烯布諾德組合物,其包括拉坦前列烯布諾德、含量大於0%且小於0.1%之如請求項5之式LB-二聚體之化合物、大於0.01%且小於0.1%之拉坦前列烯布諾德的5,6-反式異構體及小於0.1%之15S-拉坦前列烯布諾德。
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