WO1993012083A1 - 22-oxacholecalciferol derivative and production thereof - Google Patents
22-oxacholecalciferol derivative and production thereof Download PDFInfo
- Publication number
- WO1993012083A1 WO1993012083A1 PCT/JP1992/001662 JP9201662W WO9312083A1 WO 1993012083 A1 WO1993012083 A1 WO 1993012083A1 JP 9201662 W JP9201662 W JP 9201662W WO 9312083 A1 WO9312083 A1 WO 9312083A1
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- general formula
- compound
- hydroxyl group
- reaction
- formula
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- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 71
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 26
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract 2
- 239000001257 hydrogen Substances 0.000 claims abstract 2
- -1 cerium halide Chemical class 0.000 claims description 55
- 238000006243 chemical reaction Methods 0.000 claims description 47
- 239000002904 solvent Substances 0.000 claims description 25
- 239000002585 base Substances 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 5
- 125000004663 dialkyl amino group Chemical group 0.000 claims description 4
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical group CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 claims description 3
- 238000010511 deprotection reaction Methods 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 claims description 2
- 238000006317 isomerization reaction Methods 0.000 claims description 2
- 239000002798 polar solvent Substances 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 125000003118 aryl group Chemical group 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 claims 1
- 238000005695 dehalogenation reaction Methods 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000006227 byproduct Substances 0.000 abstract description 4
- 230000004069 differentiation Effects 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract description 2
- 125000006527 (C1-C5) alkyl group Chemical group 0.000 abstract 1
- 201000002980 Hyperparathyroidism Diseases 0.000 abstract 1
- 201000004681 Psoriasis Diseases 0.000 abstract 1
- 230000003356 anti-rheumatic effect Effects 0.000 abstract 1
- 239000002246 antineoplastic agent Substances 0.000 abstract 1
- 239000003435 antirheumatic agent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000003389 potentiating effect Effects 0.000 abstract 1
- 230000035755 proliferation Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 51
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 45
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 38
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 33
- 239000000243 solution Substances 0.000 description 33
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 30
- 239000000203 mixture Substances 0.000 description 24
- 239000013078 crystal Substances 0.000 description 20
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 19
- 238000002844 melting Methods 0.000 description 18
- 230000008018 melting Effects 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 17
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- 238000001816 cooling Methods 0.000 description 15
- 238000000921 elemental analysis Methods 0.000 description 15
- 239000012044 organic layer Substances 0.000 description 15
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 14
- 238000005481 NMR spectroscopy Methods 0.000 description 14
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 12
- 229920006395 saturated elastomer Polymers 0.000 description 11
- 239000011541 reaction mixture Substances 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 9
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 235000019270 ammonium chloride Nutrition 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000010898 silica gel chromatography Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 5
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- NXPHGHWWQRMDIA-UHFFFAOYSA-M magnesium;carbanide;bromide Chemical compound [CH3-].[Mg+2].[Br-] NXPHGHWWQRMDIA-UHFFFAOYSA-M 0.000 description 5
- 239000012452 mother liquor Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 239000000543 intermediate Substances 0.000 description 4
- 239000012046 mixed solvent Substances 0.000 description 4
- 238000002953 preparative HPLC Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- OISVCGZHLKNMSJ-UHFFFAOYSA-N 2,6-dimethylpyridine Chemical compound CC1=CC=CC(C)=N1 OISVCGZHLKNMSJ-UHFFFAOYSA-N 0.000 description 3
- WHNPOQXWAMXPTA-UHFFFAOYSA-N 3-methylbut-2-enamide Chemical compound CC(C)=CC(N)=O WHNPOQXWAMXPTA-UHFFFAOYSA-N 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000007810 chemical reaction solvent Substances 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 239000012312 sodium hydride Substances 0.000 description 3
- 229910000104 sodium hydride Inorganic materials 0.000 description 3
- 150000005671 trienes Chemical class 0.000 description 3
- BWZVCCNYKMEVEX-UHFFFAOYSA-N 2,4,6-Trimethylpyridine Chemical compound CC1=CC(C)=NC(C)=C1 BWZVCCNYKMEVEX-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 150000003926 acrylamides Chemical class 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000006704 dehydrohalogenation reaction Methods 0.000 description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 239000004210 ether based solvent Substances 0.000 description 2
- KIWBPDUYBMNFTB-UHFFFAOYSA-M ethyl sulfate Chemical compound CCOS([O-])(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-M 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004688 heptahydrates Chemical class 0.000 description 2
- 230000000887 hydrating effect Effects 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052987 metal hydride Inorganic materials 0.000 description 2
- 150000004681 metal hydrides Chemical class 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000011403 purification operation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 125000001981 tert-butyldimethylsilyl group Chemical group [H]C([H])([H])[Si]([H])(C([H])([H])[H])[*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- XWKFPIODWVPXLX-UHFFFAOYSA-N 2-methyl-5-methylpyridine Natural products CC1=CC=C(C)N=C1 XWKFPIODWVPXLX-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- CSDQQAQKBAQLLE-UHFFFAOYSA-N 4-(4-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine Chemical compound C1=CC(Cl)=CC=C1C1C(C=CS2)=C2CCN1 CSDQQAQKBAQLLE-UHFFFAOYSA-N 0.000 description 1
- GVCLNACSYKYUHP-UHFFFAOYSA-N 4-amino-7-(2-hydroxyethoxymethyl)pyrrolo[2,3-d]pyrimidine-5-carbothioamide Chemical compound C1=NC(N)=C2C(C(=S)N)=CN(COCCO)C2=N1 GVCLNACSYKYUHP-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- FIPWRIJSWJWJAI-UHFFFAOYSA-N Butyl carbitol 6-propylpiperonyl ether Chemical compound C1=C(CCC)C(COCCOCCOCCCC)=CC2=C1OCO2 FIPWRIJSWJWJAI-UHFFFAOYSA-N 0.000 description 1
- 101150041968 CDC13 gene Proteins 0.000 description 1
- NPOJQCVWMSKXDN-UHFFFAOYSA-N Dacthal Chemical compound COC(=O)C1=C(Cl)C(Cl)=C(C(=O)OC)C(Cl)=C1Cl NPOJQCVWMSKXDN-UHFFFAOYSA-N 0.000 description 1
- 239000007818 Grignard reagent Substances 0.000 description 1
- 206010053759 Growth retardation Diseases 0.000 description 1
- 101000913968 Ipomoea purpurea Chalcone synthase C Proteins 0.000 description 1
- 101000907988 Petunia hybrida Chalcone-flavanone isomerase C Proteins 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 1
- 229930003316 Vitamin D Natural products 0.000 description 1
- QYSXJUFSXHHAJI-XFEUOLMDSA-N Vitamin D3 Natural products C1(/[C@@H]2CC[C@@H]([C@]2(CCC1)C)[C@H](C)CCCC(C)C)=C/C=C1\C[C@@H](O)CCC1=C QYSXJUFSXHHAJI-XFEUOLMDSA-N 0.000 description 1
- NKBCXEABLGKHMS-UHFFFAOYSA-L [Cl-].[Cl-].[Ce+2]C Chemical compound [Cl-].[Cl-].[Ce+2]C NKBCXEABLGKHMS-UHFFFAOYSA-L 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005103 alkyl silyl group Chemical group 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- GCSVCUMDOQKEMT-UHFFFAOYSA-N butan-1-amine;hydrofluoride Chemical compound [H+].[F-].CCCCN GCSVCUMDOQKEMT-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- QABCGOSYZHCPGN-UHFFFAOYSA-N chloro(dimethyl)silicon Chemical compound C[Si](C)Cl QABCGOSYZHCPGN-UHFFFAOYSA-N 0.000 description 1
- DENRZWYUOJLTMF-UHFFFAOYSA-N diethyl sulfate Chemical compound CCOS(=O)(=O)OCC DENRZWYUOJLTMF-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- OAYLNYINCPYISS-UHFFFAOYSA-N ethyl acetate;hexane Chemical compound CCCCCC.CCOC(C)=O OAYLNYINCPYISS-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 150000004795 grignard reagents Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229940126601 medicinal product Drugs 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- DVSDBMFJEQPWNO-UHFFFAOYSA-N methyllithium Chemical compound C[Li] DVSDBMFJEQPWNO-UHFFFAOYSA-N 0.000 description 1
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical class [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000005499 phosphonyl group Chemical group 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical class CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 235000019166 vitamin D Nutrition 0.000 description 1
- 239000011710 vitamin D Substances 0.000 description 1
- 150000003710 vitamin D derivatives Chemical group 0.000 description 1
- 229940046008 vitamin d Drugs 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C401/00—Irradiation products of cholesterol or its derivatives; Vitamin D derivatives, 9,10-seco cyclopenta[a]phenanthrene or analogues obtained by chemical preparation without irradiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/02—Nutrients, e.g. vitamins, minerals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P5/00—Drugs for disorders of the endocrine system
- A61P5/10—Drugs for disorders of the endocrine system of the posterior pituitary hormones, e.g. oxytocin, ADH
- A61P5/12—Drugs for disorders of the endocrine system of the posterior pituitary hormones, e.g. oxytocin, ADH for decreasing, blocking or antagonising the activity of the posterior pituitary hormones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J51/00—Normal steroids with unmodified cyclopenta(a)hydrophenanthrene skeleton not provided for in groups C07J1/00 - C07J43/00
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J7/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms
- C07J7/0005—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21
- C07J7/0065—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by an OH group free esterified or etherified
- C07J7/007—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of two carbon atoms not substituted in position 21 substituted in position 20 by an OH group free esterified or etherified not substituted in position 17 alfa
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J71/00—Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring
- C07J71/0036—Nitrogen-containing hetero ring
- C07J71/0042—Nitrogen only
Definitions
- the present invention relates to 22-oxaxorecalciferol derivatives and their production.
- the present invention fights against a 22-oxaxolecalciferol derivative expected as a medicinal product, a useful synthetic intermediate thereof, and a method for producing a 22.-oxaxorecalciferol derivative via the intermediate.
- 22-oxaxolecalcifrol derivatives have been produced, for example, by the method described in JP-A-61-267550.
- This method uses the general formula ( ⁇ ):
- R ⁇ represents a hydrogen atom, a hydroxyl group or a protected hydroxyl group.
- R s represents a hydroxyl group or a protected hydroxyl group.
- F and R 7 each represent a hydrogen atom or are taken together. Represents a double bond.
- R s , R 6 , and R 7 are the same as those in the general formula (H)), and reacted with 1-bromo-3-propene in the presence of a basic catalyst to obtain 20S— (3— Butenyloxy) form, and then subjected to oxygen oxidation in the presence of a catalyst to form a 20S— (3-oxobutyroxy) form, and then reacted with a Grignard reagent to obtain 20S— (3-hydroxyl-form).
- 3-methylbutyloxy is a method for producing a compound.
- R 8 is C, represents a dialkylamino group -C s.
- the present invention provides a compound represented by the general formula ( ⁇ ):
- R represents a hydrogen atom, a hydroxyl group or a protected hydroxyl group.
- Rs represents a hydroxyl group or a protected hydroxyl group.
- R 6 and R 7 each represent a hydrogen atom or are taken together. Represents a heavy bond.>
- a compound represented by the following formula is used as a starting material: This compound can be produced, for example, by the method described in JP-A-61-267550.
- the one used as a protecting group is one which does not leave under basic conditions, such as a trimethylsilyl group or a triethylsilyl group.
- lower alkylsilyl groups such as tert-butyldimethylsilyl group.
- a tert-butyldimethylsilyl group is used.
- R. 8 represents. A dialkylamino group C t -C s subjecting the compound represented by the presence of a base catalyst, to the reaction.
- Examples of the compound represented by the general formula (M) include acrylamides such as dimethyl acrylamide and getyl acrylamide.
- Examples of the base used in the reaction include metal hydroxides such as sodium hydroxide, hydrating power and calcium hydroxide, and metal hydrides such as sodium hydride, hydrating power and calcium hydride. It is. When a metal hydroxide is used as the base for the reaction, an organic solvent that increases the solubility of the reaction reagent, is easily mixed with water, and is stable in all directions is used.
- Preferred solvents for this purpose include ether solvents such as tetrahydrofuran (THF), dioxane, diglyme, etc. If the organic solvent is stable to alkali, it may be an organic solvent that does not mix with water. For this reaction, examples thereof include aromatic hydrocarbon solvents such as toluene, xylene, benzene, etc. In this case, it is preferable to use a catalyst for transfer of water, and tetrabutylammonium salt when using a Hitoshigayoshimi Mashiku used. base and to metal hydrides are preferably used after drying the above-mentioned solvents.
- ether solvents such as tetrahydrofuran (THF), dioxane, diglyme, etc.
- organic solvent is stable to alkali, it may be an organic solvent that does not mix with water.
- examples thereof include aromatic hydrocarbon solvents such as toluene, xylene, benzene, etc.
- TH F 1 Jiokisan, ethers such as diglyme system or toluene, xylene , Aromatic hydrocarbon solvents such as benzene are used after drying, Preferably, THF is used.
- the reaction temperature and the reaction time can be appropriately selected, but in order to prevent the polymerization reaction of acrylamides, the reaction is preferably carried out at room temperature or below room temperature.
- R 2 and R 3 are the same or different and represent a lower alkyl group of C, to C S.
- R ⁇ , 5 , F and R 7 are the same as defined above.
- Representative compounds of the general formula (V) used in this reaction include methyllithium, butyllithium, methylmagnesium bromide, methylmagnesium bromide and methylcerium chloride.
- the reaction solvent a non-arotonic solvent capable of controlling by-products without decomposing the organometallic compound is preferable, and an ether-based solvent such as THF and dimethyl ether is preferably used. These solvents are used in an anhydrous state by a conventional method.
- the reaction temperature and reaction time can be selected as appropriate, but the general formula
- aryl-halogenating reagent N-bromosuccinic acid imide, N-chloroconodic acid imide, 1,3-dibutene-5,5-dimethylhydantoin and the like are used.
- reaction solvent a solvent inert to hydrogenation, preferably a nonpolar solvent such as n-hexane or carbon tetrachloride is used. Irradiate light to further promote the reaction, or azobisisoptyronitrile
- Means such as adding a radical reaction initiator such as (AIBN) may be used.
- Bases used in the dehydrohalogenation reaction include 2,4,6-trimethylpyridine (arcolidine) and 2,6-lutidine.
- Organic bases such as pyridine-based ion exchange resins, and inorganic bases such as lithium carbonate and potassium carbonate. Is used.
- the reaction solvent, reaction temperature, and reaction time can be appropriately selected depending on the type of the base, but it is preferable to reflux with heating for about 10 minutes in toluene using alcohol as the base.
- This reaction may produce by-produced 4,6-diene compounds other than 5,7-diene compounds, which are regarded as giant.
- the purification may be carried out directly on the reaction mixture by means of silica gel column chromatography or the like.
- the compound of formula (1) may be separated and purified by one or four additions, and then subjected to an elimination reaction to return to the 5,7-gen compound. (4, 6-Gen compounds do not form adducts.)
- the present inventors have found a method of eliminating under neutral conditions without affecting most of the functional groups. That is, by heating in an aprotic polar solvent such as 1,3-dimethyl-2-imidazolidinone (DMI) and N, N-dimethylformamide (DMF) without using a catalyst, a high yield can be obtained. This is a method of causing a elimination reaction.
- the reaction temperature and reaction time can be appropriately selected, but ripening for 100 to 150 hours using DMI can reduce the amount of by-products and obtain the desired product in high yield.
- DMI 1,3-dimethyl-2-imidazolidinone
- DMF N, N-dimethylformamide
- the reaction temperature and reaction time can be appropriately selected, but ripening for 100 to 150 hours using DMI can reduce the amount of by-products and obtain the desired product in high yield.
- the compound represented by the general formula (3 ⁇ 4) used here 4-phenyl-1,2,4-triazoline-13,5-dione is preferable.
- the compound represented by the general formula ((), in which R 6 and R 7 are taken together to represent a double bond is obtained by a conventional method when R 4 or R s is a protected hydroxyl group.
- the compound is further subjected to a deprotection reaction, and is converted into a compound in which R ⁇ or R 5 represents a hydroxyl group.
- the compound thus obtained can be obtained by a conventional method, for example, according to the method described in JP-A-50-85555, in an inert solvent.
- a conventional method for example, according to the method described in JP-A-50-85555, in an inert solvent.
- the reaction By subjecting the reaction to an irradiation reaction and a subsequent isomerization reaction, the compound of the general formula (I) can be easily prepared.
- R 2 and R 3 are the same or different and each represents a lower alkyl group of C t to C s .
- R t is a hydrogen atom
- a lower alkyl group compound of R 2 and R 3 include a methyl group is a novel 22-Okisako Leka Rushifu two rolls derivatives, differentiation inducing action, cell growth suppression Have production.
- the 1,4-adduct was dissolved in DMI 36 m 1 and heated at 140 for 2 hours. After cooling, 40 ml of n-hexane was added, and the mixture was washed three times with a saturated saline solution. After drying over anhydrous magnesium sulfate, the solvent was distilled off. The obtained residue was crystallized by adding 20 ml of methanol to obtain 1.7 g (yield 5.3%) of the title compound.
- reaction solution was added dropwise to water 41 in which 200 g of ammonium chloride was dissolved, the organic layer was separated, the aqueous layer was re-extracted with ethyl acetate 51, and the organic layers were combined and dried over anhydrous magnesium sulfate.
- the solvent was concentrated to obtain 1a, 3 ⁇ -bis (tert-butyldimethylsilyloxy) -20S- (3-oxobutyroxy) -1,5,7-predanadiene.
- This product was again subjected to the above-mentioned reaction to obtain a crude product of the title compound. This was suspended in methanol, and the resulting crystals were filtered off and dried to give the title compound 229 g (80% yield).
- the E tilt riff enyl phosphonyl ⁇ Mubu Romi de 2 50 g was dissolved in TH F 4 00 ml, added potassium one t one butoxide 7 0. O g, and stirred for 1 hour 3 0 minutes at 4 O e C. Subsequently, 70.0 g of 3-((tert-butyldimethylsilyloxy) -15-androstene-17-one) was added, and the mixture was stirred at 60 for 1 hour and 30 minutes. After cooling, the reaction solution was poured into 200 ml of n-hexane and 400 ml of water, and the organic layer was separated.
- the fractions containing the title compound were collected, concentrated, and dissolved in 200 ml of methylene chloride. 6.0 g of PTAD was added thereto, and the mixture was stirred at room temperature for 45 minutes.
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Diabetes (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Endocrinology (AREA)
- Pain & Pain Management (AREA)
- Rheumatology (AREA)
- Nutrition Science (AREA)
- Hematology (AREA)
- Obesity (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Steroid Compounds (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940702111A KR100247214B1 (ko) | 1991-12-18 | 1992-12-18 | 22 - 옥사콜레칼시페롤 유도체 및 그의 제조방법 |
EP93900419A EP0619304B1 (en) | 1991-12-18 | 1992-12-18 | 22-oxacholecalciferol derivative and production thereof |
US08/244,818 US5436401A (en) | 1991-12-18 | 1992-12-18 | 22-oxacholecalciferol derivative and process for preparing the same |
DE69222183T DE69222183T2 (de) | 1991-12-18 | 1992-12-18 | 22-oxacholecalziferol-derivate und ihre herstellung |
GR970403118T GR3025468T3 (en) | 1991-12-18 | 1997-11-25 | 22-oxacholecalciferol derivative and production thereof. |
HK98101901A HK1002729A1 (en) | 1991-12-18 | 1998-03-09 | 22-oxacholecalciferol derivative and production thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3/361051 | 1991-12-18 | ||
JP36105191 | 1991-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993012083A1 true WO1993012083A1 (en) | 1993-06-24 |
Family
ID=18471985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/001662 WO1993012083A1 (en) | 1991-12-18 | 1992-12-18 | 22-oxacholecalciferol derivative and production thereof |
Country Status (13)
Country | Link |
---|---|
US (1) | US5436401A (ja) |
EP (1) | EP0619304B1 (ja) |
JP (1) | JP3493037B2 (ja) |
KR (1) | KR100247214B1 (ja) |
AT (1) | ATE157966T1 (ja) |
DE (1) | DE69222183T2 (ja) |
DK (1) | DK0619304T3 (ja) |
ES (1) | ES2107650T3 (ja) |
GR (1) | GR3025468T3 (ja) |
HK (1) | HK1002729A1 (ja) |
SG (1) | SG78265A1 (ja) |
TW (1) | TW222621B (ja) |
WO (1) | WO1993012083A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995028162A1 (fr) * | 1994-04-19 | 1995-10-26 | Chugai Seiyaku Kabushiki Kaisha | Medicament attenuant ou soignant le syndrome paraneoplasique |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3563310D1 (en) * | 1985-07-30 | 1988-07-21 | Salzgitter Ind | Method and device for the preparation of suspensions with constant indications from basic materials with variable properties |
US6121469A (en) * | 1993-12-23 | 2000-09-19 | The Regents Of The University Of California | Therapeutically effective 1α,25-dihydroxyvitamin D3 analogs |
US6103709A (en) * | 1993-12-23 | 2000-08-15 | The Regents Of The University Of California | Therapeutically effective 1α,25-dihydroxyvitamin D3 analogs and methods for treatment of vitamin D diseases |
GB9607034D0 (en) * | 1996-04-03 | 1996-06-05 | Leo Pharm Prod Ltd | Chemical compounds |
EP1426352A2 (en) * | 1996-09-03 | 2004-06-09 | The Trustees of Columbia University in the City of New York | Intermediates for the sythesis of vitamin D and steroid derivatives |
GB9804861D0 (en) * | 1998-03-06 | 1998-04-29 | Res Inst Medicine Chem | Chemical compounds |
EP1103300B1 (en) * | 1998-07-03 | 2007-01-03 | Chugai Seiyaku Kabushiki Kaisha | Ultraviolet irradiation apparatus for photochemical reaction and method for preparing vitamin d derivative using the same |
DE60044090D1 (de) * | 1999-08-27 | 2010-05-12 | Hiroaki Takayama | Vitamin-d-derivate mit substituenten an der 2-alpha-position |
EP1275643A4 (en) | 2000-04-19 | 2009-06-03 | Chugai Pharmaceutical Co Ltd | DERIVATIVES OF VITAMIN D |
ATE509910T1 (de) * | 2000-06-15 | 2011-06-15 | Chugai Pharmaceutical Co Ltd | Vitamin d derivate mit einem 22-oxa- oder 22-thia-atom, einer sauer-, ester- oder amid- substitutierten c17-seitenkette und einer 16(17)- doppelbindung |
CA2425367A1 (en) * | 2000-08-30 | 2003-04-07 | Chugai Seiyaku Kabushiki Kaisha | Oct formulations |
JP2014514274A (ja) | 2011-03-09 | 2014-06-19 | テバ ファーマシューティカル インダストリーズ リミティド | マキサカルシトールの多形およびマキサカルシトールの調製方法 |
CN102796134B (zh) * | 2012-08-31 | 2015-07-01 | 甘肃皓天化学科技有限公司 | 一种马沙骨化醇中间体的制备方法 |
CN103508999B (zh) | 2013-10-12 | 2015-05-13 | 浙江海正药业股份有限公司 | 马沙骨化醇的合成中间体及其制备方法和用途 |
CN107286067A (zh) * | 2016-04-05 | 2017-10-24 | 湖南华腾制药有限公司 | 一种马沙骨化醇的制备方法 |
US20230065886A1 (en) | 2019-11-27 | 2023-03-02 | Yonsung Fine Chemical Co., Ltd. | Method for producing maxacalcitol, and intermediate therefor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61140560A (ja) * | 1984-12-12 | 1986-06-27 | Chugai Pharmaceut Co Ltd | 20−オキサ−21−ノルビタミンd3誘導体 |
JPS61267550A (ja) * | 1984-12-28 | 1986-11-27 | Chugai Pharmaceut Co Ltd | 9,10−セコ−5,7,10(19)−プレグナトリエン誘導体 |
JPH03188061A (ja) * | 1989-12-15 | 1991-08-16 | Chugai Pharmaceut Co Ltd | 新規な22―オキサビタミンd誘導体 |
-
1992
- 1992-11-27 JP JP35436292A patent/JP3493037B2/ja not_active Expired - Fee Related
- 1992-12-18 DE DE69222183T patent/DE69222183T2/de not_active Expired - Fee Related
- 1992-12-18 TW TW081110206A patent/TW222621B/zh active
- 1992-12-18 EP EP93900419A patent/EP0619304B1/en not_active Expired - Lifetime
- 1992-12-18 ES ES93900419T patent/ES2107650T3/es not_active Expired - Lifetime
- 1992-12-18 KR KR1019940702111A patent/KR100247214B1/ko not_active Expired - Fee Related
- 1992-12-18 US US08/244,818 patent/US5436401A/en not_active Expired - Fee Related
- 1992-12-18 WO PCT/JP1992/001662 patent/WO1993012083A1/ja active IP Right Grant
- 1992-12-18 SG SG1996009648A patent/SG78265A1/en unknown
- 1992-12-18 AT AT93900419T patent/ATE157966T1/de not_active IP Right Cessation
- 1992-12-18 DK DK93900419.8T patent/DK0619304T3/da active
-
1997
- 1997-11-25 GR GR970403118T patent/GR3025468T3/el unknown
-
1998
- 1998-03-09 HK HK98101901A patent/HK1002729A1/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61140560A (ja) * | 1984-12-12 | 1986-06-27 | Chugai Pharmaceut Co Ltd | 20−オキサ−21−ノルビタミンd3誘導体 |
JPS61267550A (ja) * | 1984-12-28 | 1986-11-27 | Chugai Pharmaceut Co Ltd | 9,10−セコ−5,7,10(19)−プレグナトリエン誘導体 |
JPH03188061A (ja) * | 1989-12-15 | 1991-08-16 | Chugai Pharmaceut Co Ltd | 新規な22―オキサビタミンd誘導体 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995028162A1 (fr) * | 1994-04-19 | 1995-10-26 | Chugai Seiyaku Kabushiki Kaisha | Medicament attenuant ou soignant le syndrome paraneoplasique |
Also Published As
Publication number | Publication date |
---|---|
US5436401A (en) | 1995-07-25 |
ES2107650T3 (es) | 1997-12-01 |
GR3025468T3 (en) | 1998-02-27 |
KR100247214B1 (ko) | 2000-03-15 |
TW222621B (ja) | 1994-04-21 |
EP0619304A4 (en) | 1995-03-29 |
DE69222183T2 (de) | 1998-01-22 |
JP3493037B2 (ja) | 2004-02-03 |
EP0619304B1 (en) | 1997-09-10 |
ATE157966T1 (de) | 1997-09-15 |
KR940703807A (ko) | 1994-12-12 |
JPH0672994A (ja) | 1994-03-15 |
DE69222183D1 (de) | 1997-10-16 |
SG78265A1 (en) | 2001-02-20 |
HK1002729A1 (en) | 1998-09-11 |
DK0619304T3 (da) | 1998-02-16 |
EP0619304A1 (en) | 1994-10-12 |
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