JP4488161B2 - Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound - Google Patents
Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound Download PDFInfo
- Publication number
- JP4488161B2 JP4488161B2 JP2003141238A JP2003141238A JP4488161B2 JP 4488161 B2 JP4488161 B2 JP 4488161B2 JP 2003141238 A JP2003141238 A JP 2003141238A JP 2003141238 A JP2003141238 A JP 2003141238A JP 4488161 B2 JP4488161 B2 JP 4488161B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- alkyl group
- optionally substituted
- optically active
- halogen atom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 150000001875 compounds Chemical class 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 4
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 26
- 125000003118 aryl group Chemical group 0.000 claims description 25
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 claims description 24
- 125000005843 halogen group Chemical group 0.000 claims description 23
- 125000004104 aryloxy group Chemical group 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 150000004678 hydrides Chemical class 0.000 claims description 6
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 5
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 3
- -1 lithium aluminum hydride Chemical compound 0.000 description 42
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 19
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 14
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 125000001424 substituent group Chemical group 0.000 description 9
- SIPUZPBQZHNSDW-UHFFFAOYSA-N bis(2-methylpropyl)aluminum Chemical compound CC(C)C[Al]CC(C)C SIPUZPBQZHNSDW-UHFFFAOYSA-N 0.000 description 7
- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 4
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 4
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- 150000002170 ethers Chemical class 0.000 description 4
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 125000004434 sulfur atom Chemical group 0.000 description 3
- AVQQQNCBBIEMEU-UHFFFAOYSA-N 1,1,3,3-tetramethylurea Chemical compound CN(C)C(=O)N(C)C AVQQQNCBBIEMEU-UHFFFAOYSA-N 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 0 C[Si](C)(C)CC(C(c1ccccc1)=O)[S@](C)(*P)O Chemical compound C[Si](C)(C)CC(C(c1ccccc1)=O)[S@](C)(*P)O 0.000 description 2
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- FYJKEHKQUPSJDH-UHFFFAOYSA-N [dimethyl-(trimethylsilylamino)silyl]methane;potassium Chemical compound [K].C[Si](C)(C)N[Si](C)(C)C FYJKEHKQUPSJDH-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 239000003125 aqueous solvent Substances 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- 229940125782 compound 2 Drugs 0.000 description 2
- 229940126214 compound 3 Drugs 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 239000012024 dehydrating agents Substances 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 150000001983 dialkylethers Chemical class 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- SPRIOUNJHPCKPV-UHFFFAOYSA-N hydridoaluminium Chemical compound [AlH] SPRIOUNJHPCKPV-UHFFFAOYSA-N 0.000 description 2
- 125000000468 ketone group Chemical group 0.000 description 2
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 2
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000010898 silica gel chromatography Methods 0.000 description 2
- WRIKHQLVHPKCJU-UHFFFAOYSA-N sodium bis(trimethylsilyl)amide Chemical compound C[Si](C)(C)N([Na])[Si](C)(C)C WRIKHQLVHPKCJU-UHFFFAOYSA-N 0.000 description 2
- 239000012312 sodium hydride Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- LJIOTBMDLVHTBO-CUYJMHBOSA-N (2s)-2-amino-n-[(1r,2r)-1-cyano-2-[4-[4-(4-methylpiperazin-1-yl)sulfonylphenyl]phenyl]cyclopropyl]butanamide Chemical compound CC[C@H](N)C(=O)N[C@]1(C#N)C[C@@H]1C1=CC=C(C=2C=CC(=CC=2)S(=O)(=O)N2CCN(C)CC2)C=C1 LJIOTBMDLVHTBO-CUYJMHBOSA-N 0.000 description 1
- VUDZSIYXZUYWSC-DBRKOABJSA-N (4r)-1-[(2r,4r,5r)-3,3-difluoro-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-hydroxy-1,3-diazinan-2-one Chemical compound FC1(F)[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)N[C@H](O)CC1 VUDZSIYXZUYWSC-DBRKOABJSA-N 0.000 description 1
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QSHDDOUJBYECFT-BJUDXGSMSA-N [200Hg] Chemical compound [200Hg] QSHDDOUJBYECFT-BJUDXGSMSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- 150000004808 allyl alcohols Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000005110 aryl thio group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 125000000000 cycloalkoxy group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 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
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- VTZJFPSWNQFPCQ-UHFFFAOYSA-N dibutylaluminum Chemical compound CCCC[Al]CCCC VTZJFPSWNQFPCQ-UHFFFAOYSA-N 0.000 description 1
- HJXBDPDUCXORKZ-UHFFFAOYSA-N diethylalumane Chemical compound CC[AlH]CC HJXBDPDUCXORKZ-UHFFFAOYSA-N 0.000 description 1
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 1
- TUTOKIOKAWTABR-UHFFFAOYSA-N dimethylalumane Chemical compound C[AlH]C TUTOKIOKAWTABR-UHFFFAOYSA-N 0.000 description 1
- XOCWTYIVWYOSGQ-UHFFFAOYSA-N dipropylalumane Chemical compound C(CC)[AlH]CCC XOCWTYIVWYOSGQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- RAZLZRRZYUBFJR-CQSZACIVSA-N trimethyl-[2-[(R)-(4-methylphenyl)sulfinyl]ethyl]silane Chemical compound CC1=CC=C([S@](=O)CC[Si](C)(C)C)C=C1 RAZLZRRZYUBFJR-CQSZACIVSA-N 0.000 description 1
- JQSHBVHOMNKWFT-DTORHVGOSA-N varenicline Chemical compound C12=CC3=NC=CN=C3C=C2[C@H]2C[C@@H]1CNC2 JQSHBVHOMNKWFT-DTORHVGOSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、医・農薬等生理活性物質等の重要な中間体である光学活性アリルアルコール誘導体を得るのに有用な、光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物の製造法に関する。
【0002】
【従来の技術】
従来、光学活性なα−置換−β−ケトスルホキシド化合物のケトン基を還元して、光学活性なα−置換−β−ヒドロキシスルホキシド化合物を製造する方法としては、例えば、α置換基がアルキルチオ基又はアリールチオ基の場合、水素化ホウ素ナトリウムあるいはリチウムアルミニウムハイドライドで還元して光学活性α−アルキルチオ−、又は光学活性α−アリールチオ−β−ヒドロキシスルホキシド化合物を製造する方法(例えば、非特許文献1及び2参照)がある。
【0003】
また、α置換基がアルキル基の場合、ジ−i−ブチルアルミニウムハイドライドで還元して光学活性α−アルキル−β−ヒドロキシスルホキシド化合物を製造する方法(例えば、非特許文献3参照)がある。
【0004】
更に、光学活性β−シリル−α−スルフィニルカルボアニオンをアルデヒドと反応させて、本発明と同様の光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物を製造する方法(例えば、非特許文献4参照)がある。
【0005】
【非特許文献1】
Tetrahedron Lett. 1983, 24,p.503
【非特許文献2】
J. Chem. Soc., Perkin Trans. I.1984, p.189
【非特許文献3】
Tetrahedron Lett. 1992, 33,p.2733
【非特許文献4】
Tetrahedron 1994, 50, p.1045
【0006】
【発明が解決しようとする課題】
しかし、従来の、光学活性なα−置換−β−ケトスルホキシド化合物のケトン基を還元して光学活性なα−置換−β−ヒドロキシスルホキシド化合物を製造する方法では、非特許文献1及び2に見られる様に、光学活性α−アルキルチオ−、及び光学活性α−アリールチオ−β−ヒドロキシスルホキシド化合物のみ高選択的に得られているが、非特許文献3に見られるα−アルキル−β−ヒドロキシスルホキシド化合物は選択性が非常に悪い。
【0007】
また、非特許文献4の方法も2種類のジアステレオマーの混合物として得られている。
【0008】
本発明は、上記事情に鑑みなされたものであり、特に光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物の効率的な製造方法を提供することを目的とする。
【0009】
【課題を解決するための手段】
本発明者らは、上記目的を達成するため鋭意検討を重ねた結果、本発明を完成するに至った。
【0010】
すなわち本発明は、式(1)
【0011】
【化3】
【0012】
〔式中、ArはC6−12アリール基(該アリール基は、C1−6アルキル基、C1−6アルコキシ基(該C1−6アルキル基及びC1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)、C6−12アリール基、C6−12アリールオキシ基(該C6−12アリール基及びC6−12アリールオキシ基は、C1−6アルキル基、C1−6アルコキシ基(該C1−6アルキル基及びC1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)を表わし、RはC1−6アルキル基(該アルキル基はC1−6アルコキシ基(該C1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)、C6−12アリール基、C6−12アリールオキシ基(該C6−12アリール基及びC6−12アリールオキシ基は、C1−6アルキル基、C1−6アルコキシ基(該C1−6アルキル基及びC1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)又はC6−12アリール基(該アリール基はC1−6アルキル基、C1−6アルコキシ基(該C1−6アルキル基及びC1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)、C6−12アリール基、C6−12アリールオキシ基(該C6−12アリール基及びC6−12アリールオキシ基は、C1−6アルキル基、C1−6アルコキシ基(該C1−6アルキル基及びC1−6アルコキシ基はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)又はハロゲン原子で任意に置換されていてもよい。)を表わし、Ra、Rb及びRcは互いに独立して、C1−6アルキル基又はC6−12アリール基(該C6−12アリール基は、C1−6アルキル基で任意に置換されていてもよい。)を表わし、*はその原子が不斉であることを表わし、その絶対配置がR又はSであることを表わす。〕で表わされる光学活性α−シリルメチル−β−ケトスルホキシド化合物を、塩基の存在下、式(2)
(RL)2AlH (2)
〔式中、RLはC1−6アルキル基を表わす。〕で表されるジアルキルアルミニウムハイドライドで還元することを特徴とする、式(3)
【0013】
【化4】
【0014】
〔式中、Ar、R、Ra、Rb、Rc及び*は前記に同じであり、*1は、*がRの場合はRの配置を、*がSの場合は、Sの配置を意味し、*2は、*がRの場合はRの配置を、*がSの場合は、Sの配置を意味する。〕で表わされる光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物の製造法に関するものである。
【0015】
【発明の実施の形態】
以下、更に詳細に本発明を説明する。
【0016】
尚、本明細書中「n」はノルマルを「i」はイソを「s」はセカンダリーを「t」はターシャリーを「c」はシクロを「o」はオルトを「m」はメタを「p」はパラを意味する。
【0017】
本明細書中に記載する各置換基を説明する。
【0018】
ハロゲン原子としては、フッ素原子、塩素原子、臭素原子及びヨウ素原子が挙げられる。
【0019】
C1−6アルキル基は、直鎖、分岐のC1−6アルキル基又はC3−6シクロアルキル基であってよく、例えば、メチル、エチル、n−プロピル、i−プロピル、c−プロピル、n−ブチル、i−ブチル、s−ブチル、t−ブチル、c−ブチル、n−ペンチル、1−メチル−n−ブチル、2−メチル−n−ブチル、3−メチル−n−ブチル、1,1−ジメチル−n−プロピル、c−ペンチル、2−メチル−c−ブチル、n−ヘキシル、1−メチル−n−ペンチル、2−メチル−n−ペンチル、1,1−ジメチル−n−ブチル、1−エチル−n−ブチル、1,1,2−トリメチル−n−プロピル、c−ヘキシル、1−メチル−c−ペンチル、1−エチル−c−ブチル及び1,2−ジメチル−c−ブチル等が挙げられる。
【0020】
C1−6アルコキシ基は、直鎖、分岐のC1−6アルコキシ基又はC3−6シクロアルコキシ基であってよく、例えば、メトキシ、エトキシ、n−プロポキシ、i−プロポキシ、c−プロポキシ、n−ブトキシ、i−ブトキシ、s−ブトキシ、t−ブトキシ、c−ブトキシ、n−ペンチルオキシ、1−メチル−n−ブトキシ、2−メチル−n−ブトキシ、3−メチル−n−ブトキシ、1,1−ジメチル−n−プロポキシ、c−ペンチルオキシ、2−メチル−c−ブトキシ、n−ヘキシルオキシ、1−メチル−n−ペンチルオキシ、2−メチル−n−ペンチルオキシ、1,1−ジメチル−n−ブトキシ、1−エチル−n−ブトキシ、1,1,2−トリメチル−n−プロポキシ、c−ヘキシルオキシ、1−メチル−c−ペンチルオキシ、1−エチル−c−ブトキシ及び1,2−ジメチル−c−ブトキシ等が挙げられる。
【0021】
C6−12アリール基としては、フェニル、α−ナフチル、β−ナフチル、o−ビフェニリル、m−ビフェニリル及びp−ビフェニリル等が挙げられる。
【0022】
C6−12アリールオキシ基としては、フェニルオキシ、α−ナフチルオキシ、β−ナフチルオキシ、o−ビフェニリルオキシ、m−ビフェニリルオキシ及びp−ビフェニリルオキシ等が挙げられる。
【0023】
次に、本発明に係る化合物の好ましい置換基につき説明する。
【0024】
置換基Arとして好ましくは、フェニル、p−メチルフェニル、p−トリフルオロメチルフェニル、3,5−ジメチルフェニル、2,4,6−トリメチルフェニル、α−ナフチル及びβ−ナフチル等が挙げられ、又、好ましくは、p−メチルフェニルが挙げられる。
【0025】
置換基Rとして好ましくは、メチル、エチル、n−プロピル、i−プロピル、n−ブチル、n−ペンチル、n−ヘキシル、c−ヘキシル、フェニル及びベンジル等が挙げられる。
【0026】
置換基Ra、Rb及びRcとして好ましくは、メチル、エチル、n−プロピル、i−プロピル、n−ブチル、t−ブチル及びフェニル等が挙げられ、又、好ましくは、メチルが挙げられる。
【0027】
置換基RLとして好ましくは、メチル、エチル、n−プロピル、i−プロピル、n−ブチル及びi−ブチル等が挙げられ、又、好ましくは、i−ブチルが挙げられる。
【0028】
次に、本発明の式(3)の光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物の製造方法について説明する。
【0029】
即ち、式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物を、塩基存在下、式(2)のジアルキルアルミニウムハイドライドで還元することにより、式(3)の光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物を製造することが出来る。
【0030】
通常、光学活性α−置換−β−ケトスルホキシド化合物を還元して光学活性α−置換−β−ヒドロキシスルホキシド化合物を製造する場合、硫黄原子上の不斉により、スキーム1に示すように(a),(b),(c),(d)の4種類のジアステレオマーの混合物になる。
【0031】
スキーム1
【0032】
【化5】
【0033】
(式中、硫黄原子上の‥は不対電子を表す。)
本発明は、α置換基(スキーム1のR’)をシリルメチル基にすることにより、塩基条件下で、還元剤としてジアルキルアルミニウムハイドライドを使用すると、スキーム2に示すように、選択的に(a)の1種類の化合物のみ得られる。
【0034】
スキーム2
【0035】
【化6】
【0036】
(式中、硫黄原子上の‥は不対電子を表す。)
塩基としては、水素化ナトリウム、t−ブトキシナトリウム、t−ブトキシカリウム、リチウムジ−i−プロピルアミド、ナトリウムヘキサメチルジシラザン、カリウムヘキサメチルジシラザン等が挙げられ、好ましくは、リチウムジ−i−プロピルアミドである。
【0037】
塩基の使用量は、式(1)の基質に対して、0.01〜1モル倍の範囲であり、特に、0.1〜1モル倍の範囲が好ましい。
【0038】
ジアルキルアルミニウムハイドライドとしては、ジメチルアルミニウムハイドライド、ジエチルアルミニウムハイドライド、ジ−n−プロピルアルミニウムハイドライド、ジ−n−ブチルアルミニウムハイドライド、ジ−i−ブチルアルミニウムハイドライド等が挙げられ、好ましくは、ジ−i−ブチルアルミニウムハイドライドである。
【0039】
ジアルキルアルミニウムハイドライドの使用量は、式(1)の基質に対して、0.5〜5モル倍の範囲であり、特に、1〜2モル倍の範囲が好ましい。
【0040】
反応溶媒としては、反応に関与しないものであれば特に制限はなく、アルコール類(例えばメタノール、エタノール、プロパノール、ブタノールやオクタノール等)、セロソルブ類(例えばメトキシエタノールやエトキシエタノール等)、非プロトン性極性有機溶媒類(例えばジメチルホルムアミド、ジメチルスルホキシド、ジメチルアセトアミド、テトラメチルウレア、スルホラン、N−メチルピロリドンやN,N−ジメチルイミダゾリジノン等)、エーテル類(例えばジエチルエーテル、ジイソプロピルエーテル、t−ブチルメチルエーテル、テトラヒドロフランやジオキサン等)、脂肪族炭化水素類(例えばペンタン、ヘキサン、c−ヘキサン、オクタン、デカン、デカリンや石油エーテル等)、芳香族炭化水素類(ベンゼン、クロロベンゼン、o−ジクロロベンゼン、ニトロベンゼン、トルエン、キシレン、メシチレンやテトラリン等)、ハロゲン化炭化水素類(例えばクロロホルム、ジクロロメタン、ジクロロエタンや四塩化炭素等)及びアルコキシアルカン類(例えばジメトキシエタンやジエトキシエタン等)等の溶媒が挙げられ、好ましくは、エタノール、ジエチルエーテル、テトラヒドロフラン、トルエンが挙げられる。
【0041】
これらの溶媒は反応の起こりやすさに従って適宜選択され、単一又は混合して用いられる。また場合によっては適当な脱水剤や乾燥剤を用いて非水溶媒として用いられる。
【0042】
反応温度は、通常、−100℃から使用する溶媒の沸点まで可能であるが、好ましくは−80〜30℃の範囲で行うのがよい。
【0043】
反応時間は、通常、0.1〜1000時間である。
【0044】
反応終了後は、適当な溶媒により目的物を抽出し、溶媒を減圧濃縮して粗物を得ることができる。
【0045】
さらに、蒸留、再結晶及びシリカゲルカラムクロマトグラフィー等の常法による精製を行うことで、純粋な式(3)の光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物を単離することができる。
【0046】
次に、本発明の原料となる式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物は、スキーム3に示すように製造することができる。
【0047】
スキーム3
【0048】
【化7】
【0049】
(式中、*はその原子が不斉であることを表わし、その絶対配置がR又はSであることを表わす。)
即ち、光学活性シリルエチルスルホキシド化合物を塩基存在下、エチルエステル類と反応させることにより式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物が得られる。
【0050】
上記反応の塩基としては、水素化ナトリウム、t−ブトキシナトリウム、t−ブトキシカリウム、リチウムジ−i−プロピルアミド、ナトリウムヘキサメチルジシラザン、カリウムヘキサメチルジシラザン等が挙げられ、好ましくは、リチウムジ−i−プロピルアミドである。
【0051】
塩基の使用量は、基質に対して、0.5〜2モル倍の範囲であり、特に、0.8〜1.5モル倍の範囲が好ましい。
【0052】
反応溶媒としては、反応に関与しないものであれば特に制限はなく、アルコール類(例えばメタノール、エタノール、プロパノール、ブタノールやオクタノール等)、セロソルブ類(例えばメトキシエタノールやエトキシエタノール等)、非プロトン性極性有機溶媒類(例えばジメチルホルムアミド、ジメチルスルホキシド、ジメチルアセトアミド、テトラメチルウレア、スルホラン、N−メチルピロリドンやN,N−ジメチルイミダゾリジノン等)、エーテル類(例えばジエチルエーテル、ジイソプロピルエーテル、t−ブチルメチルエーテル、テトラヒドロフランやジオキサン等)、脂肪族炭化水素類(例えばペンタン、ヘキサン、c−ヘキサン、オクタン、デカン、デカリンや石油エーテル等)、芳香族炭化水素類(ベンゼン、クロロベンゼン、o−ジクロロベンゼン、ニトロベンゼン、トルエン、キシレン、メシチレンやテトラリン等)、ハロゲン化炭化水素類(例えばクロロホルム、ジクロロメタン、ジクロロエタンや四塩化炭素等)及びアルコキシアルカン類(例えばジメトキシエタンやジエトキシエタン等)等の溶媒が挙げられ、好ましくは、エタノール、ジエチルエーテル、テトラヒドロフラン、トルエンが挙げられる。
【0053】
これらの溶媒は反応の起こりやすさに従って適宜選択され、単一又は混合して用いられる。また場合によっては適当な脱水剤や乾燥剤を用いて非水溶媒として用いられる。
【0054】
反応温度は、通常、−100℃から使用する溶媒の沸点まで可能であるが、好ましくは−80〜30℃の範囲で行うのがよい。
【0055】
反応時間は、通常、0.1〜1000時間である。
【0056】
反応終了後は、得られた式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物を含む反応液をそのまま本発明の反応に使用しても構わないし、適当な溶媒により目的物を抽出し、溶媒を減圧濃縮して式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物を単離しても構わない。
【0057】
さらに、蒸留、再結晶及びシリカゲルカラムクロマトグラフィー等の常法による精製を行うことで、純粋な式(1)の光学活性α−シリルメチル−β−ケトスルホキシド化合物を単離することができる。
【0058】
【実施例】
以下、実施例を挙げて本発明を更に詳しく説明するが、本発明は下記実施例に限定されるものではない。
【0059】
なお、参考例及び実施例にて採用した分析条件等は下記の通りである。
【0060】
1H NMR(300MHz)及び13C NMR(75MHz)測定条件;
装置:Varian Mercury−200
測定溶媒:CDCl3
基準物質:テトラメチルシラン(TMS)(δ0.0ppm for 1H)
CDCl3(δ77.0ppm for 13C)
IR測定装置;JASCO FT/IR−200
MS測定装置;HITACHIM−2000
旋光度測定装置;Jasco DIP−4
【0061】
実施例1 光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物3の合成
【0062】
【化8】
【0063】
(式中、p−Tolはp−メチルフェニル基、Meはメチル基、LDAはリチウムジ−i−プロピルアミド、Phはフェニル基、Etはエチル基、DIBALはジ−i−ブチルアルミニウムハイドライドを表わす。)
ジ−i−プロピルアミン(0.04mL,0.28mmol)のテトラヒドロフラン(0.25mL)溶液に、n−ブチルリチウム(1.49M/ヘキサン液,0.18mL,0.27mmol)を0℃で加え、10分撹拌した。
反応液を−78℃に冷却後、(R)−p−トリル 2−トリメチルシリルエチルスルホキシド(51mg,0.21mmol)のテトラヒドロフラン(0.25mL)溶液を20分かけて滴下した。
安息香酸エチル(0.05mL,0.35mmol)のテトラヒドロフラン(0.3mL)溶液を加え、30分撹拌した。
ジ−i−ブチルアルミニウムハイドライド(0.95M/ヘキサン液,0.35mL,0.34mmol)を加えた後、1時間撹拌した。
反応液に、飽和塩化アンモニウム水溶液を加えた後、塩化メチレンで抽出した。
得られた有機層を飽和食塩水で洗浄後、分液し、有機層を無水硫酸ナトリウムで乾燥した。
ろ過後、ろ液を減圧下濃縮して得られた粗生成物をカラムクロマトグラフィー(シリカゲル12g,塩化メチレン/ジエチルエーテル=90/10)で精製し、目的物の(1R,2R,RS)−1−フェニル−2−(p−トリルスルフィニル)−3−(トリメチルシリル)プロパン−1−オール3を44mg(収率60%)得た。
更に、中間体の化合物2を27.6mg(収率38%)回収した。
その際、その他のジアステレオマー異性体は全く見られなかった。
【0064】
化合物3のNMR
1H NMR (300 MHz, CDCl3)δ−0.55(s, 9H), 0.80(dd, 1H, J=4.4, 16.2Hz), 0.94(dd, 1H, J=6.6, 16.2Hz), 2.41(s, 3H),2.86(ddd, 1H, J=3.3, 3.3,4.4Hz), 2.90(d, 1H, J=2.2Hz),5.50(dd, 1H, J=2.2, 3.3Hz),7.29−7.49(m. 9H).
【0065】
化合物2のNMR
1H NMR (300 MHz, CDCl3)δ−0.15(s, 9H, (R,RS)), 0.00(s, 9H, (S,RS)), 0.60−0.90(m, 2H),2.41(s, 3H), 4.50−4.70(m, 1H), 7.29−7.92(m, 9H).
【0066】
実施例2 光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物7〜9の合成
【0067】
【化9】
【0068】
(式中、p−Tolはp−メチルフェニル基、Meはメチル基、LDAはリチウムジ−i−プロピルアミド、Etはエチル基、DIBALはジ−i−ブチルアルミニウムハイドライドを表わす。)
実施例1の安息香酸エチルを下表の化合物に変更した以外は、実施例1と同様にして、光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物7〜9、及び中間体の化合物4〜6を得た。
【0069】
【表1】
【0070】
化合物7aのNMR
1H NMR (300 MHz, CDCl3)δ−0.17(s, 9H), 0.70(dd, 1H, J=3.8, 15.5Hz), 0.85(dd, 1H, J=8.9, 15.5Hz), 1.20(3H, d, J=7.0Hz), 2.42(s, 3H), 2.70(ddd, 1H, J=3.8, 4.5, 8.9Hz), 2.7(br, 1H), 4.08−4.25(m, 1H), 7.28(d, 2H, J=8.4Hz),7.40(d, 2H, J=8.4Hz).
【0071】
化合物8aのNMR
1H NMR (300 MHz, CDCl3)δ−0.18(s, 9H), 0.72(dd, 1H, J=4.2, 15.7Hz), 0.85(dd, 1H, J=8.9, 15.7Hz), 0.90(3H, t, J=6.5Hz), 1.24−1.41(m, 6H),1.52−1.71(m, 2H), 2.20(d, 1H, J=4.3Hz),2.41(s, 3H), 2.69(ddd, 1H, J=2.8,4.2, 8.9Hz), 4.08−4.20(m, 1H), 7.32(d, 2H, J=8.4Hz), 7.44(d, 2H, J=8.4Hz).
【0072】
化合物9aのNMR
1H NMR (300 MHz, CDCl3)δ−0.18(s, 9H), 0.79(dd, 1H, J=5.1, 16.2Hz), 0.93(d, 3H, J=6.7Hz), 0.94(dd, 1H, J=6.5, 16.2Hz), 1.03(d, 3H, J=6.7Hz), 1.86(dqq, 1H, J=6.7, 6.7, 7.6Hz), 2.17(br, 1H),2.42(s, 3H), 2.82(ddd, 1H, J=3.2,5.1, 6.5Hz), 3.90(dd, 1H, J=3.2, 7.6Hz), 7.33(d, 2H, J=8.5Hz), 7.45(d, 2H, J=8.5Hz).
【0073】
【発明の効果】
本発明の方法によれば、効率的に、光学活性α−シリルメチル−β−ヒドロキシスルホキシド化合物を製造することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing an optically active α-silylmethyl-β-hydroxysulfoxide compound useful for obtaining an optically active allyl alcohol derivative which is an important intermediate for physiologically active substances such as medical and agricultural chemicals.
[0002]
[Prior art]
Conventionally, as a method for producing an optically active α-substituted-β-hydroxysulfoxide compound by reducing the ketone group of an optically active α-substituted-β-ketosulfoxide compound, for example, the α substituent is an alkylthio group or In the case of an arylthio group, a method for producing an optically active α-alkylthio- or optically active α-arylthio-β-hydroxysulfoxide compound by reduction with sodium borohydride or lithium aluminum hydride (see, for example, Non-Patent Documents 1 and 2) )
[0003]
In addition, when the α substituent is an alkyl group, there is a method for producing an optically active α-alkyl-β-hydroxysulfoxide compound by reduction with di-i-butylaluminum hydride (see, for example, Non-Patent Document 3).
[0004]
Further, there is a method for producing an optically active α-silylmethyl-β-hydroxysulfoxide compound similar to the present invention by reacting an optically active β-silyl-α-sulfinyl carbanion with an aldehyde (see, for example, Non-Patent Document 4). is there.
[0005]
[Non-Patent Document 1]
Tetrahedron Lett. 1983, 24, p. 503
[Non-Patent Document 2]
J. et al. Chem. Soc. Perkin Trans. I. 1984, p. 189
[Non-Patent Document 3]
Tetrahedron Lett. 1992, 33, p. 2733
[Non-Patent Document 4]
Tetrahedron 1994, 50, p. 1045
[0006]
[Problems to be solved by the invention]
However, in the conventional method for producing an optically active α-substituted-β-hydroxysulfoxide compound by reducing the ketone group of an optically active α-substituted-β-ketosulfoxide compound, see Non-patent Documents 1 and 2. As shown in FIG. 1, only the optically active α-alkylthio- and optically active α-arylthio-β-hydroxysulfoxide compounds are obtained with high selectivity, but the α-alkyl-β-hydroxysulfoxide compounds found in Non-Patent Document 3 The selectivity is very bad.
[0007]
The method of Non-Patent Document 4 is also obtained as a mixture of two kinds of diastereomers.
[0008]
This invention is made | formed in view of the said situation, and it aims at providing the efficient manufacturing method of an optically active alpha-silylmethyl-beta-hydroxysulfoxide compound especially.
[0009]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present inventors have completed the present invention.
[0010]
That is, the present invention provides the formula (1)
[0011]
[Chemical 3]
[0012]
[In the formula, Ar represents a C 6-12 aryl group (the aryl group is a C 1-6 alkyl group, a C 1-6 alkoxy group (the C 1-6 alkyl group and the C 1-6 alkoxy group are halogen atoms) Optionally substituted), a C 6-12 aryl group, a C 6-12 aryloxy group (the C 6-12 aryl group and C 6-12 aryloxy group are a C 1-6 alkyl group, A C 1-6 alkoxy group (the C 1-6 alkyl group and C 1-6 alkoxy group may be optionally substituted with a halogen atom) or a halogen atom), or R represents a C 1-6 alkyl group (the alkyl group is a C 1-6 alkoxy group (the C 1-6 alkoxy group is optionally substituted with a halogen atom). May be. ), C 6-12 aryl group, C 6-12 aryloxy group (the C 6-12 aryl group and C 6-12 aryloxy group are a C 1-6 alkyl group, a C 1-6 alkoxy group (the C The 1-6 alkyl group and the C 1-6 alkoxy group may be optionally substituted with a halogen atom) or optionally substituted with a halogen atom) or optionally substituted with a halogen atom; Or a C 6-12 aryl group (the aryl group is a C 1-6 alkyl group, a C 1-6 alkoxy group (the C 1-6 alkyl group and the C 1-6 alkoxy group are optionally halogen atoms) Optionally substituted), C 6-12 aryl group, C 6-12 aryloxy group (the C 6-12 aryl group and C 6-12 aryloxy group are C 1-6 alkyl group, C 1 -6 Alkyki Ci group (the C 1-6 alkyl group and C 1-6 alkoxy group may be optionally substituted with a halogen atom) or optionally substituted with a halogen atom) or a halogen atom R a , R b and R c are independently of each other a C 1-6 alkyl group or a C 6-12 aryl group (the C 6-12 aryl group is C Which may be optionally substituted with a 1-6 alkyl group.), * Represents that the atom is asymmetric, and its absolute configuration is R or S. An optically active α-silylmethyl-β-ketosulfoxide compound represented by the formula (2) in the presence of a base:
(R L ) 2 AlH (2)
[Wherein, R L represents a C 1-6 alkyl group. And a dialkylaluminum hydride represented by the formula (3):
[0013]
[Formula 4]
[0014]
[In the formula, Ar, R, R a , R b , R c and * are the same as above, * 1 is the arrangement of R when * is R, and the arrangement of S when * is S. * 2 means the arrangement of R when * is R, and the arrangement of S when * is S. ] It is related with the manufacturing method of the optically active alpha-silylmethyl-beta-hydroxy sulfoxide compound represented by this.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail.
[0016]
In this specification, “n” is normal, “i” is iso, “s” is secondary, “t” is tertiary, “c” is cyclo, “o” is ortho, “m” is meta, “p” means para.
[0017]
Each substituent described in this specification will be described.
[0018]
Examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
[0019]
The C 1-6 alkyl group may be a linear, branched C 1-6 alkyl group or a C 3-6 cycloalkyl group, for example, methyl, ethyl, n-propyl, i-propyl, c-propyl, n-butyl, i-butyl, s-butyl, t-butyl, c-butyl, n-pentyl, 1-methyl-n-butyl, 2-methyl-n-butyl, 3-methyl-n-butyl, 1, 1-dimethyl-n-propyl, c-pentyl, 2-methyl-c-butyl, n-hexyl, 1-methyl-n-pentyl, 2-methyl-n-pentyl, 1,1-dimethyl-n-butyl, 1-ethyl-n-butyl, 1,1,2-trimethyl-n-propyl, c-hexyl, 1-methyl-c-pentyl, 1-ethyl-c-butyl, 1,2-dimethyl-c-butyl, etc. Is mentioned.
[0020]
The C 1-6 alkoxy group may be a linear, branched C 1-6 alkoxy group or a C 3-6 cycloalkoxy group, for example, methoxy, ethoxy, n-propoxy, i-propoxy, c-propoxy, n-butoxy, i-butoxy, s-butoxy, t-butoxy, c-butoxy, n-pentyloxy, 1-methyl-n-butoxy, 2-methyl-n-butoxy, 3-methyl-n-butoxy, 1 , 1-dimethyl-n-propoxy, c-pentyloxy, 2-methyl-c-butoxy, n-hexyloxy, 1-methyl-n-pentyloxy, 2-methyl-n-pentyloxy, 1,1-dimethyl -N-butoxy, 1-ethyl-n-butoxy, 1,1,2-trimethyl-n-propoxy, c-hexyloxy, 1-methyl-c-pentyloxy, 1-ethyl Le -c- butoxy and 1,2-dimethyl -c- butoxy, and the like.
[0021]
Examples of the C 6-12 aryl group include phenyl, α-naphthyl, β-naphthyl, o-biphenylyl, m-biphenylyl, p-biphenylyl and the like.
[0022]
Examples of the C 6-12 aryloxy group include phenyloxy, α-naphthyloxy, β-naphthyloxy, o-biphenylyloxy, m-biphenylyloxy, p-biphenylyloxy and the like.
[0023]
Next, preferred substituents of the compound according to the present invention will be described.
[0024]
Preferred examples of the substituent Ar include phenyl, p-methylphenyl, p-trifluoromethylphenyl, 3,5-dimethylphenyl, 2,4,6-trimethylphenyl, α-naphthyl and β-naphthyl. Preferably, p-methylphenyl is used.
[0025]
Preferred examples of the substituent R include methyl, ethyl, n-propyl, i-propyl, n-butyl, n-pentyl, n-hexyl, c-hexyl, phenyl and benzyl.
[0026]
The substituents R a , R b and R c are preferably methyl, ethyl, n-propyl, i-propyl, n-butyl, t-butyl and phenyl, and preferably methyl.
[0027]
Preferred examples of the substituent RL include methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl and the like, and preferably i-butyl.
[0028]
Next, a method for producing the optically active α-silylmethyl-β-hydroxysulfoxide compound of the formula (3) of the present invention will be described.
[0029]
That is, the optically active α-silylmethyl-β of formula (3) is reduced by reducing the optically active α-silylmethyl-β-ketosulfoxide compound of formula (1) with a dialkylaluminum hydride of formula (2) in the presence of a base. -A hydroxy sulfoxide compound can be produced.
[0030]
In general, when an optically active α-substituted-β-ketosulfoxide compound is reduced to produce an optically active α-substituted-β-hydroxysulfoxide compound, as shown in Scheme 1 (a) due to asymmetry on the sulfur atom. , (B), (c), and (d).
[0031]
Scheme 1
[0032]
[Chemical formula 5]
[0033]
(In the formula,... On the sulfur atom represents an unpaired electron.)
The present invention selectively converts (a) a dialkylaluminum hydride as a reducing agent under basic conditions by using a silylmethyl group as the α substituent (R ′ in Scheme 1), as shown in Scheme 2. Only one kind of compound is obtained.
[0034]
Scheme 2
[0035]
[Chemical 6]
[0036]
(In the formula,... On the sulfur atom represents an unpaired electron.)
Examples of the base include sodium hydride, t-butoxy sodium, t-butoxy potassium, lithium di-i-propylamide, sodium hexamethyldisilazane, potassium hexamethyldisilazane, etc., preferably lithium di-i-propylamide. It is.
[0037]
The usage-amount of a base is the range of 0.01-1 mol times with respect to the substrate of Formula (1), and the range of 0.1-1 mol times is especially preferable.
[0038]
Examples of the dialkylaluminum hydride include dimethylaluminum hydride, diethylaluminum hydride, di-n-propylaluminum hydride, di-n-butylaluminum hydride, di-i-butylaluminum hydride, and preferably di-i-butyl. Aluminum hydride.
[0039]
The amount of dialkylaluminum hydride used is in the range of 0.5 to 5 moles, and particularly preferably in the range of 1 to 2 moles, relative to the substrate of formula (1).
[0040]
The reaction solvent is not particularly limited as long as it does not participate in the reaction, and alcohols (eg, methanol, ethanol, propanol, butanol, octanol, etc.), cellosolves (eg, methoxyethanol, ethoxyethanol, etc.), aprotic polarity, etc. Organic solvents (for example, dimethylformamide, dimethylsulfoxide, dimethylacetamide, tetramethylurea, sulfolane, N-methylpyrrolidone and N, N-dimethylimidazolidinone), ethers (for example, diethyl ether, diisopropyl ether, t-butylmethyl) Ethers, tetrahydrofuran, dioxane, etc.), aliphatic hydrocarbons (eg, pentane, hexane, c-hexane, octane, decane, decalin, petroleum ether, etc.), aromatic hydrocarbons (benzene, chloro, etc.) Benzene, o-dichlorobenzene, nitrobenzene, toluene, xylene, mesitylene, tetralin, etc.), halogenated hydrocarbons (eg, chloroform, dichloromethane, dichloroethane, carbon tetrachloride, etc.) and alkoxyalkanes (eg, dimethoxyethane, diethoxyethane, etc.) ) And the like, preferably ethanol, diethyl ether, tetrahydrofuran, and toluene.
[0041]
These solvents are appropriately selected according to the ease of reaction, and are used alone or in combination. In some cases, a suitable dehydrating agent or desiccant is used as a non-aqueous solvent.
[0042]
The reaction temperature is usually from −100 ° C. to the boiling point of the solvent used, but it is preferably carried out in the range of −80 to 30 ° C.
[0043]
The reaction time is usually 0.1 to 1000 hours.
[0044]
After completion of the reaction, the target product can be extracted with an appropriate solvent, and the solvent can be concentrated under reduced pressure to obtain a crude product.
[0045]
Furthermore, a pure optically active α-silylmethyl-β-hydroxysulfoxide compound of the formula (3) can be isolated by performing purification by conventional methods such as distillation, recrystallization, and silica gel column chromatography.
[0046]
Next, the optically active α-silylmethyl-β-ketosulfoxide compound of the formula (1) which is a raw material of the present invention can be produced as shown in Scheme 3.
[0047]
Scheme 3
[0048]
[Chemical 7]
[0049]
(In the formula, * represents that the atom is asymmetric and its absolute configuration is R or S.)
That is, an optically active α-silylmethyl-β-ketosulfoxide compound of the formula (1) is obtained by reacting an optically active silylethyl sulfoxide compound with ethyl esters in the presence of a base.
[0050]
Examples of the base for the above reaction include sodium hydride, t-butoxy sodium, t-butoxy potassium, lithium di-i-propylamide, sodium hexamethyldisilazane, potassium hexamethyldisilazane, and preferably lithium di-i. -Propylamide.
[0051]
The usage-amount of a base is the range of 0.5-2 mol times with respect to a substrate, and the range of 0.8-1.5 mol times is especially preferable.
[0052]
The reaction solvent is not particularly limited as long as it does not participate in the reaction, and alcohols (eg, methanol, ethanol, propanol, butanol, octanol, etc.), cellosolves (eg, methoxyethanol, ethoxyethanol, etc.), aprotic polarity, etc. Organic solvents (for example, dimethylformamide, dimethylsulfoxide, dimethylacetamide, tetramethylurea, sulfolane, N-methylpyrrolidone and N, N-dimethylimidazolidinone), ethers (for example, diethyl ether, diisopropyl ether, t-butylmethyl) Ethers, tetrahydrofuran, dioxane, etc.), aliphatic hydrocarbons (eg, pentane, hexane, c-hexane, octane, decane, decalin, petroleum ether, etc.), aromatic hydrocarbons (benzene, chloro, etc.) Benzene, o-dichlorobenzene, nitrobenzene, toluene, xylene, mesitylene, tetralin, etc.), halogenated hydrocarbons (eg, chloroform, dichloromethane, dichloroethane, carbon tetrachloride, etc.) and alkoxyalkanes (eg, dimethoxyethane, diethoxyethane, etc.) ) And the like, preferably ethanol, diethyl ether, tetrahydrofuran, and toluene.
[0053]
These solvents are appropriately selected according to the ease of reaction, and are used alone or in combination. In some cases, a suitable dehydrating agent or desiccant is used as a non-aqueous solvent.
[0054]
The reaction temperature is usually from −100 ° C. to the boiling point of the solvent used, but it is preferably carried out in the range of −80 to 30 ° C.
[0055]
The reaction time is usually 0.1 to 1000 hours.
[0056]
After completion of the reaction, the obtained reaction solution containing the optically active α-silylmethyl-β-ketosulfoxide compound of the formula (1) may be used as it is for the reaction of the present invention, and the target product is extracted with an appropriate solvent. Then, the solvent may be concentrated under reduced pressure to isolate the optically active α-silylmethyl-β-ketosulfoxide compound of formula (1).
[0057]
Furthermore, a pure optically active α-silylmethyl-β-ketosulfoxide compound of the formula (1) can be isolated by purification by conventional methods such as distillation, recrystallization and silica gel column chromatography.
[0058]
【Example】
EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to the following Example.
[0059]
In addition, the analysis conditions etc. which were employ | adopted in the reference example and the Example are as follows.
[0060]
1 H NMR (300 MHz) and 13 C NMR (75 MHz) measurement conditions;
Apparatus: Varian Mercury-200
Measuring solvent: CDCl 3
Reference substance: Tetramethylsilane (TMS) (δ0.0 ppm for 1 H)
CDCl 3 (δ 77.0 ppm for 13 C)
IR measuring device; JASCO FT / IR-200
MS measuring device; HITACHIM-2000
Optical rotation measuring device; Jasco DIP-4
[0061]
Example 1 Synthesis of optically active α-silylmethyl-β-hydroxysulfoxide compound 3
[Chemical 8]
[0063]
(In the formula, p-Tol represents a p-methylphenyl group, Me represents a methyl group, LDA represents lithium di-i-propylamide, Ph represents a phenyl group, Et represents an ethyl group, and DIBAL represents di-i-butylaluminum hydride. )
To a solution of di-i-propylamine (0.04 mL, 0.28 mmol) in tetrahydrofuran (0.25 mL) was added n-butyllithium (1.49 M / hexane solution, 0.18 mL, 0.27 mmol) at 0 ° C. Stir for 10 minutes.
After the reaction solution was cooled to -78 ° C, a solution of (R) -p-tolyl 2-trimethylsilylethyl sulfoxide (51 mg, 0.21 mmol) in tetrahydrofuran (0.25 mL) was added dropwise over 20 minutes.
A solution of ethyl benzoate (0.05 mL, 0.35 mmol) in tetrahydrofuran (0.3 mL) was added and stirred for 30 minutes.
Di-i-butylaluminum hydride (0.95 M / hexane solution, 0.35 mL, 0.34 mmol) was added, followed by stirring for 1 hour.
A saturated aqueous ammonium chloride solution was added to the reaction solution, followed by extraction with methylene chloride.
The obtained organic layer was washed with saturated brine and separated, and the organic layer was dried over anhydrous sodium sulfate.
After filtration, the crude product obtained by concentrating the filtrate under reduced pressure was purified by column chromatography (silica gel 12 g, methylene chloride / diethyl ether = 90/10) to obtain the desired product (1R, 2R, R S ). 44 mg (yield 60%) of -1-phenyl-2- (p-tolylsulfinyl) -3- (trimethylsilyl) propan-1-ol 3 was obtained.
Further, 27.6 mg (yield 38%) of intermediate compound 2 was recovered.
At that time, no other diastereomeric isomers were observed.
[0064]
NMR of compound 3
1 H NMR (300 MHz, CDCl 3 ) δ-0.55 (s, 9H), 0.80 (dd, 1H, J = 4.4, 16.2 Hz), 0.94 (dd, 1H, J = 6.6, 16.2 Hz), 2.41 (s, 3H), 2.86 (ddd, 1H, J = 3.3, 3.3, 4.4 Hz), 2.90 (d, 1H, J = 2.2 Hz), 5.50 (dd, 1H, J = 2.2, 3.3 Hz), 7.29-7.49 (m. 9H).
[0065]
NMR of Compound 2
1 H NMR (300 MHz, CDCl 3 ) δ-0.15 (s, 9H, (R, R S )), 0.00 (s, 9H, (S, R S )), 0.60-0. 90 (m, 2H), 2.41 (s, 3H), 4.50-4.70 (m, 1H), 7.29-7.92 (m, 9H).
[0066]
Example 2 Synthesis of optically active α-silylmethyl-β-hydroxysulfoxide compounds 7 to 9
[Chemical 9]
[0068]
(Wherein p-Tol represents a p-methylphenyl group, Me represents a methyl group, LDA represents lithium di-i-propylamide, Et represents an ethyl group, and DIBAL represents di-i-butylaluminum hydride.)
Optically active α-silylmethyl-β-hydroxysulfoxide compounds 7 to 9 and intermediate compounds 4 to 6 were changed in the same manner as in Example 1 except that the ethyl benzoate of Example 1 was changed to the compounds shown in the table below. Obtained.
[0069]
[Table 1]
[0070]
NMR of Compound 7a
1 H NMR (300 MHz, CDCl 3 ) δ-0.17 (s, 9H), 0.70 (dd, 1H, J = 3.8, 15.5 Hz), 0.85 (dd, 1H, J = 8.9, 15.5 Hz), 1.20 (3H, d, J = 7.0 Hz), 2.42 (s, 3H), 2.70 (ddd, 1H, J = 3.8, 4.5 , 8.9 Hz), 2.7 (br, 1H), 4.08-4.25 (m, 1H), 7.28 (d, 2H, J = 8.4 Hz), 7.40 (d, 2H) , J = 8.4 Hz).
[0071]
NMR of Compound 8a
1 H NMR (300 MHz, CDCl 3 ) δ-0.18 (s, 9H), 0.72 (dd, 1H, J = 4.2, 15.7 Hz), 0.85 (dd, 1H, J = 8.9, 15.7 Hz), 0.90 (3H, t, J = 6.5 Hz), 1.24-1.41 (m, 6H), 1.52-1.71 (m, 2H), 2.20 (d, 1H, J = 4.3 Hz), 2.41 (s, 3H), 2.69 (ddd, 1H, J = 2.8, 4.2, 8.9 Hz), 4.08 -4.20 (m, 1H), 7.32 (d, 2H, J = 8.4 Hz), 7.44 (d, 2H, J = 8.4 Hz).
[0072]
NMR of Compound 9a
1 H NMR (300 MHz, CDCl 3 ) δ-0.18 (s, 9H), 0.79 (dd, 1H, J = 5.1, 16.2 Hz), 0.93 (d, 3H, J = 6.7 Hz), 0.94 (dd, 1H, J = 6.5, 16.2 Hz), 1.03 (d, 3H, J = 6.7 Hz), 1.86 (dqq, 1H, J = 6) .7, 6.7, 7.6 Hz), 2.17 (br, 1H), 2.42 (s, 3H), 2.82 (ddd, 1H, J = 3.2, 5.1, 6. 5Hz), 3.90 (dd, 1H, J = 3.2, 7.6Hz), 7.33 (d, 2H, J = 8.5Hz), 7.45 (d, 2H, J = 8.5Hz) ).
[0073]
【The invention's effect】
According to the method of the present invention, an optically active α-silylmethyl-β-hydroxysulfoxide compound can be efficiently produced.
Claims (3)
(RL)2AlH (2)
〔式中、RLはC1−6アルキル基を表わす。〕で表されるジアルキルアルミニウムハイドライドで還元することを特徴とする、式(3)
(R L ) 2 AlH (2)
[Wherein, R L represents a C 1-6 alkyl group. And a dialkylaluminum hydride represented by the formula (3):
詳細な説明
The production method according to claim 1 or 2, wherein R L is an i-butyl group.
Detailed description
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003141238A JP4488161B2 (en) | 2003-05-20 | 2003-05-20 | Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003141238A JP4488161B2 (en) | 2003-05-20 | 2003-05-20 | Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004345962A JP2004345962A (en) | 2004-12-09 |
| JP4488161B2 true JP4488161B2 (en) | 2010-06-23 |
Family
ID=33529645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003141238A Expired - Fee Related JP4488161B2 (en) | 2003-05-20 | 2003-05-20 | Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4488161B2 (en) |
-
2003
- 2003-05-20 JP JP2003141238A patent/JP4488161B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004345962A (en) | 2004-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101816336B1 (en) | Method for producing bicyclic compound via iminium salt | |
| JP2007538041A (en) | Method for producing diphenylazetidinone derivative | |
| JP4488161B2 (en) | Process for producing optically active α-silylmethyl-β-hydroxysulfoxide compound | |
| JP5729512B2 (en) | Production intermediate of tetrahydropyran compounds | |
| RU2326885C1 (en) | Diisopropyl ((1-(hydroxymethyl)-cyclopropyl)oxy)methylphosphonate process | |
| Szechner | Synthesis and absolute configuration of two diastereoisomeric (1R, 2S, 3R)-and (1S, 2S, 3R)-2-amino-1-(2-furyl)-1, 3-butandiols | |
| US8653307B2 (en) | Liphagal enantiomers and their derivatives and precursors, and enantioselective methods of making the same | |
| JP4811547B2 (en) | Process for producing optically active cyclohexene compound and optically active cyclohexene derivative used for the production | |
| JP4314455B2 (en) | Cis and transenein, and process for producing cis and trans oligoenein compounds | |
| KR101453413B1 (en) | Method for preparation of alpha-carboline derivatives | |
| KR100457732B1 (en) | The preparation of asymmetric furofuranelignan compound | |
| JP4903956B2 (en) | Process for producing 7-oxabicyclo [2.2.1] hept-5-ene-2-carboxylic acid derivative | |
| KR100543172B1 (en) | Process for preparing terane compound | |
| TWI838487B (en) | Method for producing prostaglandins | |
| CN103421059B (en) | A kind of synthetic method of amrubicin | |
| Chaumont-Olive et al. | Total synthesis of spiromastilactone A | |
| WO2011111762A1 (en) | Method for producing diaryl derivative, novel binaphthyl derivative, method for producing arene derivative and novel arene derivative | |
| US20110137050A1 (en) | Process for the Preparation of 4,7-Dimethoxy-5-Methyl-1,3-Benzodioxole and Derivatives Thereof | |
| JPH0967274A (en) | Asymmetric diels-alder reaction | |
| Lan et al. | The first total synthesis of (−)-sinulariol-B and three other cembranoids | |
| KR20160008873A (en) | Novel beta-sulfinamino malonate derivatives and process for preparing the same, and process for preparing sitagliptin using the same | |
| JPH01143873A (en) | Pteridine derivative | |
| JPS59163370A (en) | Preparation of 0-(aminomethyl)phenylacetic lactam | |
| JP2012500811A (en) | Improved synthesis of hexahydrodibenzopyranones | |
| CN110256479A (en) | A kind of chiral pyrrolidine derivative and preparation method thereof of siliceous acyl group skeleton |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060314 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090218 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091021 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20091126 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100310 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130409 Year of fee payment: 3 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100323 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130409 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140409 Year of fee payment: 4 |
|
| LAPS | Cancellation because of no payment of annual fees |