JPH04316537A - Optically active 3,5-anti-dihydroxycarboxylic acid ester derivative - Google Patents
Optically active 3,5-anti-dihydroxycarboxylic acid ester derivativeInfo
- Publication number
- JPH04316537A JPH04316537A JP2037891A JP2037891A JPH04316537A JP H04316537 A JPH04316537 A JP H04316537A JP 2037891 A JP2037891 A JP 2037891A JP 2037891 A JP2037891 A JP 2037891A JP H04316537 A JPH04316537 A JP H04316537A
- Authority
- JP
- Japan
- Prior art keywords
- methyl
- formula
- mmol
- compound
- nmr
- 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.)
- Granted
Links
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims abstract description 4
- 150000002148 esters Chemical class 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 53
- VYTIPBMEFQSUFP-NKWVEPMBSA-N O[C@@H](CC(=O)OC)C[C@H](CC)O Chemical compound O[C@@H](CC(=O)OC)C[C@H](CC)O VYTIPBMEFQSUFP-NKWVEPMBSA-N 0.000 abstract description 8
- HEWZVZIVELJPQZ-UHFFFAOYSA-N 2,2-dimethoxypropane Chemical compound COC(C)(C)OC HEWZVZIVELJPQZ-UHFFFAOYSA-N 0.000 abstract description 7
- 239000013543 active substance Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 5
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 201000005577 familial hyperlipidemia Diseases 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 63
- -1 (3R,5S)- Ethyl 3,5-dihydroxyhexanoate Chemical compound 0.000 description 58
- 238000005160 1H NMR spectroscopy Methods 0.000 description 48
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 30
- 239000000203 mixture Substances 0.000 description 24
- 238000001816 cooling Methods 0.000 description 22
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 21
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 20
- 239000011541 reaction mixture Substances 0.000 description 20
- 239000002904 solvent Substances 0.000 description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 238000004458 analytical method Methods 0.000 description 18
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 14
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 13
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 12
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 12
- 238000004821 distillation Methods 0.000 description 12
- 238000001914 filtration Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 10
- ZDYVRSLAEXCVBX-UHFFFAOYSA-N pyridinium p-toluenesulfonate Chemical compound C1=CC=[NH+]C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1 ZDYVRSLAEXCVBX-UHFFFAOYSA-N 0.000 description 9
- 229920006395 saturated elastomer Polymers 0.000 description 9
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 8
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 8
- PFKFTWBEEFSNDU-UHFFFAOYSA-N carbonyldiimidazole Chemical compound C1=CN=CN1C(=O)N1C=CN=C1 PFKFTWBEEFSNDU-UHFFFAOYSA-N 0.000 description 8
- JBFYUZGYRGXSFL-UHFFFAOYSA-N imidazolide Chemical compound C1=C[N-]C=N1 JBFYUZGYRGXSFL-UHFFFAOYSA-N 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 6
- 101100272976 Panax ginseng CYP716A53v2 gene Proteins 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 238000010898 silica gel chromatography Methods 0.000 description 6
- 239000004367 Lipase Substances 0.000 description 5
- 102000004882 Lipase Human genes 0.000 description 5
- 108090001060 Lipase Proteins 0.000 description 5
- 239000000543 intermediate Substances 0.000 description 5
- 235000019421 lipase Nutrition 0.000 description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000007810 chemical reaction solvent Substances 0.000 description 4
- XHFXKKFVUDJSPJ-RXMQYKEDSA-N methyl (3r)-3-hydroxypentanoate Chemical compound CC[C@@H](O)CC(=O)OC XHFXKKFVUDJSPJ-RXMQYKEDSA-N 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- PBVZQAXFSQKDKK-UHFFFAOYSA-N 3-Methoxy-3-oxopropanoic acid Chemical compound COC(=O)CC(O)=O PBVZQAXFSQKDKK-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- BUDQDWGNQVEFAC-UHFFFAOYSA-N Dihydropyran Chemical compound C1COC=CC1 BUDQDWGNQVEFAC-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FLLNLJJKHKZKMB-UHFFFAOYSA-N boron;tetramethylazanium Chemical compound [B].C[N+](C)(C)C FLLNLJJKHKZKMB-UHFFFAOYSA-N 0.000 description 3
- 238000003965 capillary gas chromatography Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 3
- KRZJRNZICWNMOA-GXSJLCMTSA-N (3s,4r)-4,8-dihydroxy-3-methoxy-3,4-dihydro-2h-naphthalen-1-one Chemical compound C1=CC=C2[C@@H](O)[C@@H](OC)CC(=O)C2=C1O KRZJRNZICWNMOA-GXSJLCMTSA-N 0.000 description 2
- 208000031226 Hyperlipidaemia Diseases 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- QHIWCDIIUDKZKJ-HNHGDDPOSA-N O1C(CCCC1)O[C@@H](CC(=O)O)CC Chemical compound O1C(CCCC1)O[C@@H](CC(=O)O)CC QHIWCDIIUDKZKJ-HNHGDDPOSA-N 0.000 description 2
- ADQGTNPQJJKDPZ-BFHBGLAWSA-N O1C(CCCC1)O[C@@H](CC(=O)OC)CC Chemical compound O1C(CCCC1)O[C@@H](CC(=O)OC)CC ADQGTNPQJJKDPZ-BFHBGLAWSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000004210 ether based solvent Substances 0.000 description 2
- VGLKHVQPWGFXEG-NCJHBDPTSA-K europium(3+);(1z)-2,2,3,3,4,4,4-heptafluoro-1-(4,7,7-trimethyl-3-oxo-2-bicyclo[2.2.1]heptanylidene)butan-1-olate Chemical compound [Eu+3].C1CC2(C)C(=O)\C(=C(/[O-])C(F)(F)C(F)(F)C(F)(F)F)C1C2(C)C.C1CC2(C)C(=O)\C(=C(/[O-])C(F)(F)C(F)(F)C(F)(F)F)C1C2(C)C.C1CC2(C)C(=O)\C(=C(/[O-])C(F)(F)C(F)(F)C(F)(F)F)C1C2(C)C VGLKHVQPWGFXEG-NCJHBDPTSA-K 0.000 description 2
- 150000002681 magnesium compounds Chemical class 0.000 description 2
- LVKCSZQWLOVUGB-UHFFFAOYSA-M magnesium;propane;bromide Chemical compound [Mg+2].[Br-].C[CH-]C LVKCSZQWLOVUGB-UHFFFAOYSA-M 0.000 description 2
- IUYHWZFSGMZEOG-UHFFFAOYSA-M magnesium;propane;chloride Chemical compound [Mg+2].[Cl-].C[CH-]C IUYHWZFSGMZEOG-UHFFFAOYSA-M 0.000 description 2
- XHFXKKFVUDJSPJ-YFKPBYRVSA-N methyl (3s)-3-hydroxypentanoate Chemical compound CC[C@H](O)CC(=O)OC XHFXKKFVUDJSPJ-YFKPBYRVSA-N 0.000 description 2
- QCZPJJIXHJSOMY-UHFFFAOYSA-N methyl 2-hydroxypentanoate Chemical compound CCCC(O)C(=O)OC QCZPJJIXHJSOMY-UHFFFAOYSA-N 0.000 description 2
- AJLFOPYRIVGYMJ-INTXDZFKSA-N mevastatin Chemical class C([C@H]1[C@@H](C)C=CC2=CCC[C@@H]([C@H]12)OC(=O)[C@@H](C)CC)C[C@@H]1C[C@@H](O)CC(=O)O1 AJLFOPYRIVGYMJ-INTXDZFKSA-N 0.000 description 2
- 125000006239 protecting group Chemical group 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000003579 shift reagent Substances 0.000 description 2
- XHFLOLLMZOTPSM-UHFFFAOYSA-M sodium;hydrogen carbonate;hydrate Chemical class [OH-].[Na+].OC(O)=O XHFLOLLMZOTPSM-UHFFFAOYSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 229940124597 therapeutic agent Drugs 0.000 description 2
- MAYCICSNZYXLHB-UHFFFAOYSA-N tricaproin Chemical compound CCCCCC(=O)OCC(OC(=O)CCCCC)COC(=O)CCCCC MAYCICSNZYXLHB-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- NHPNFWSEMRERAY-ZCFIWIBFSA-N CC[C@@H](O)CC(=O)CC(=O)OC Chemical compound CC[C@@H](O)CC(=O)CC(=O)OC NHPNFWSEMRERAY-ZCFIWIBFSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZIYVAZASIRJRHP-UHFFFAOYSA-N acetonitrile;hydron;fluoride Chemical compound F.CC#N ZIYVAZASIRJRHP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000004791 alkyl magnesium halides Chemical class 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- TVQGDYNRXLTQAP-UHFFFAOYSA-N heptanoic acid ethyl ester Natural products CCCCCCC(=O)OCC TVQGDYNRXLTQAP-UHFFFAOYSA-N 0.000 description 1
- UWZVPQKWYFZLLW-UHFFFAOYSA-N heptanoic acid propyl ester Natural products CCCCCCC(=O)OCCC UWZVPQKWYFZLLW-UHFFFAOYSA-N 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- OTCKOJUMXQWKQG-UHFFFAOYSA-L magnesium bromide Chemical compound [Mg+2].[Br-].[Br-] OTCKOJUMXQWKQG-UHFFFAOYSA-L 0.000 description 1
- 229910001623 magnesium bromide Inorganic materials 0.000 description 1
- AICDYVDWYUUUGL-UHFFFAOYSA-L magnesium;propanedioate Chemical compound [Mg+2].[O-]C(=O)CC([O-])=O AICDYVDWYUUUGL-UHFFFAOYSA-L 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- ZKBFAXBOTWDLBL-UHFFFAOYSA-N methyl 2-hydroxyheptanoate Chemical compound CCCCCC(O)C(=O)OC ZKBFAXBOTWDLBL-UHFFFAOYSA-N 0.000 description 1
- XHFXKKFVUDJSPJ-UHFFFAOYSA-N methyl 3-hydroxypentanoate Chemical compound CCC(O)CC(=O)OC XHFXKKFVUDJSPJ-UHFFFAOYSA-N 0.000 description 1
- QIYDQYBDGDYJKD-UHFFFAOYSA-N methyl 6-methylheptanoate Natural products COC(=O)CCCCC(C)C QIYDQYBDGDYJKD-UHFFFAOYSA-N 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical compound CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は光学活性3,5−アンチ
−ジヒドロキシカルボン酸エステル誘導体に関する。FIELD OF THE INVENTION This invention relates to optically active 3,5-anti-dihydroxycarboxylic acid ester derivatives.
【0002】0002
【従来の技術】本発明における光学活性3,5−アンチ
−ジヒドロキシカルボン酸エステル誘導体は、本発明者
らによって初めて合成された新規化合物である。この新
規化合物は様々な生理活性物質や機能性物質の合成中間
体として非常に有用な化合物である。例えば、本化合物
を中間体として高脂血症治療薬として有用なコンパクチ
ン類縁体を合成する事が出来る。BACKGROUND OF THE INVENTION The optically active 3,5-anti-dihydroxycarboxylic acid ester derivative of the present invention is a novel compound synthesized for the first time by the present inventors. This new compound is very useful as a synthetic intermediate for various physiologically active substances and functional substances. For example, compactin analogs useful as therapeutic agents for hyperlipidemia can be synthesized using this compound as an intermediate.
【0003】0003
【発明が解決しようとする課題】光学活性3,5−アン
チ−ジヒドロキシカルボン酸エステル誘導体は、生理活
性物質や機能性物質の合成中間体として極めて応用範囲
が広いため、その供給及びその簡便な製造法の開発が強
く要望されていた。本発明者らは、この光学活性体を効
率よく大量に得るという目的を達成するため鋭意検討し
た結果、これを効率よく大量に得る製造法を見出すと共
に、この製造法によって、新規の光学活性3,5−アン
チ−ジヒドロキシカルボン酸エステル誘導体を得るに至
った。[Problems to be Solved by the Invention] Optically active 3,5-anti-dihydroxycarboxylic acid ester derivatives have an extremely wide range of applications as intermediates for the synthesis of physiologically active substances and functional substances. There was a strong demand for legal development. The present inventors have made extensive studies to achieve the purpose of efficiently obtaining a large amount of this optically active substance, and as a result, have discovered a manufacturing method for efficiently obtaining a large amount of this optically active substance, and have discovered a new optically active substance using this manufacturing method. , 5-anti-dihydroxycarboxylic acid ester derivatives were obtained.
【0004】0004
【課題を解決するための手段】本発明の光学活性3,5
−アンチ−ジヒドロキシカルボン酸エステル、及び光学
活性3,5−アンチ−O−イソプロピリデンカルボン酸
エステルは下記一般式(Ia)及び(Ib)、一般式(
IIa)及び(IIb)で表される。[Means for solving the problem] Optical activity 3, 5 of the present invention
-Anti-dihydroxycarboxylic acid ester and optically active 3,5-anti-O-isopropylidenecarboxylic acid ester have the following general formulas (Ia) and (Ib), general formula (
Represented by IIa) and (IIb).
【0005】[0005]
【化3】[Chemical formula 3]
【0006】[0006]
【化4】[C4]
【0007】(式中、R1 、R2 はアルキル基を示
す。)具体的に化合物名を挙げれば、(3R,5S)−
3,5−ジヒドロキシヘキサン酸エチル、(3R,5S
)−3,5−ジヒドロキシヘキサン酸プロピル、(3R
,5S)−3,5−ジヒドロキシヘキサン酸イソプロピ
ル、(3R,5S)−3,5−ジヒドロキシヘキサン酸
ブチル。(In the formula, R1 and R2 represent an alkyl group.) Specific compound names include (3R,5S)-
Ethyl 3,5-dihydroxyhexanoate, (3R,5S
)-3,5-dihydroxyhexanoate propyl, (3R
, 5S)-isopropyl-3,5-dihydroxyhexanoate, (3R,5S)-butyl-3,5-dihydroxyhexanoate.
【0008】(3R,5S)−3,5−ジヒドロキシヘ
プタン酸メチル、(3R,5S)−3,5−ジヒドロキ
シヘプタン酸プロピル、(3R,5S)−3,5−ジヒ
ドロキシヘプタン酸イソプロピル、(3R,5S)−3
,5−ジヒドロキシヘプタン酸ブチル。
(3R,5S)−3,5−ジヒドロキシオクタン酸プロ
ピル、(3R,5S)−3,5−ジヒドロキシオクタン
酸イソプロピル、(3R,5S)−3,5−ジヒドロキ
シオクタン酸ブチル。Methyl (3R,5S)-3,5-dihydroxyheptanoate, Propyl (3R,5S)-3,5-dihydroxyheptanoate, Isopropyl (3R,5S)-3,5-dihydroxyheptanoate, (3R ,5S)-3
, butyl 5-dihydroxyheptanoate. Propyl (3R,5S)-3,5-dihydroxyoctanoate, isopropyl (3R,5S)-3,5-dihydroxyoctanoate, butyl (3R,5S)-3,5-dihydroxyoctanoate.
【0009】(3R,5S)−3,5−ジヒドロキシ−
6−メチルヘプタン酸メチル、(3R,5S)−3,5
−ジヒドロキシ−6−メチルヘプタン酸エチル、(3R
,5S)−3,5−ジヒドロキシ−6−メチルヘプタン
酸プロピル、(3R,5S)−3,5−ジヒドロキシ−
6−メチルヘプタン酸イソプロピル、(3R,5S)−
3,5−ジヒドロキシ−6−メチルヘプタン酸ブチル。(3R,5S)-3,5-dihydroxy-
Methyl 6-methylheptanoate, (3R,5S)-3,5
-Ethyl dihydroxy-6-methylheptanoate, (3R
,5S)-3,5-dihydroxy-6-methylheptanoate propyl, (3R,5S)-3,5-dihydroxy-
Isopropyl 6-methylheptanoate, (3R,5S)-
Butyl 3,5-dihydroxy-6-methylheptanoate.
【0010】(3S,5R)−3,5−ジヒドロキシヘ
キサン酸エチル、(3S,5R)−3,5−ジヒドロキ
シヘキサン酸プロピル、(3S,5R)−3,5−ジヒ
ドロキシヘキサン酸イソプロピル、(3S,5R)−3
,5−ジヒドロキシヘキサン酸ブチル。
(3S,5R)−3,5−ジヒドロキシヘプタン酸メチ
ル、(3S,5R)−3,5−ジヒドロキシヘプタン酸
プロピル、(3S,5R)−3,5−ジヒドロキシヘプ
タン酸イソプロピル、(3S,5R)−3,5−ジヒド
ロキシヘプタン酸ブチル。Ethyl (3S,5R)-3,5-dihydroxyhexanoate, (3S,5R)propyl-3,5-dihydroxyhexanoate, (3S,5R)-isopropyl-3,5-dihydroxyhexanoate, (3S ,5R)-3
, butyl 5-dihydroxyhexanoate. (3S,5R)-Methyl-3,5-dihydroxyheptanoate, (3S,5R)-propyl-3,5-dihydroxyheptanoate, (3S,5R)-isopropyl-3,5-dihydroxyheptanoate, (3S,5R) Butyl -3,5-dihydroxyheptanoate.
【0011】(3S,5R)−3,5−ジヒドロキシオ
クタン酸プロピル、(3S,5R)−3,5−ジヒドロ
キシオクタン酸イソプロピル、(3S,5R)−3,5
−ジヒドロキシオクタン酸ブチル。
(3S,5R)−3,5−ジヒドロキシ−6−メチルヘ
プタン酸メチル、(3S,5R)−3,5−ジヒドロキ
シ−6−メチルヘプタン酸エチル、(3S,5R)−3
,5−ジヒドロキシ−6−メチルヘプタン酸プロピル、
(3S,5R)−3,5−ジヒドロキシ−6−メチルヘ
プタン酸イソプロピル、(3S,5R)−3,5−ジヒ
ドロキシ−6−メチルヘプタン酸ブチル。(3S,5R)-3,5-dihydroxyoctanoic acid propyl, (3S,5R)-3,5-dihydroxyoctanoic acid isopropyl, (3S,5R)-3,5
-Butyl dihydroxyoctanoate. (3S,5R)-3,5-dihydroxy-6-methylheptanoate, ethyl (3S,5R)-3,5-dihydroxy-6-methylheptanoate, (3S,5R)-3
, propyl 5-dihydroxy-6-methylheptanoate,
Isopropyl (3S,5R)-3,5-dihydroxy-6-methylheptanoate, butyl (3S,5R)-3,5-dihydroxy-6-methylheptanoate.
【0012】(3R,5S)−3,5−O−イソプロピ
リデンヘキサン酸メチル、(3R,5S)−3,5−O
−イソプロピリデンヘキサン酸エチル、(3R,5S)
−3,5−O−イソプロピリデンヘキサン酸プロピル、
(3R,5S)−3,5−O−イソプロピリデンヘキサ
ン酸イソプロピル。(3R,5S)−3,5−O−イソ
プロピリデンヘキサン酸ブチル、(3R,5S)−3,
5−O−イソプロピリデンヘプタン酸メチル、(3R,
5S)−3,5−O−イソプロピリデンヘプタン酸エチ
ル、(3R,5S)−3,5−O−イソプロピリデンヘ
プタン酸プロピル、(3R,5S)−3,5−O−イソ
プロピリデンヘプタン酸イソプロピル、(3R,5S)
−3,5−O−イソプロピリデンヘプタン酸ブチル。(3R,5S)-3,5-O-isopropylidenehexanoate, (3R,5S)-3,5-O
-Ethyl isopropylidenehexanoate, (3R,5S)
-3,5-O-isopropylidenehexanoate propyl,
Isopropyl (3R,5S)-3,5-O-isopropylidenehexanoate. (3R,5S)-3,5-O-isopropylidenehexanoate butyl, (3R,5S)-3,
Methyl 5-O-isopropylideneheptanoate, (3R,
5S)-3,5-O-isopropylideneheptanoate ethyl, (3R,5S)-3,5-O-isopropylideneheptanoate propyl, (3R,5S)-3,5-O-isopropylideneheptanoate isopropyl , (3R, 5S)
Butyl -3,5-O-isopropylideneheptanoate.
【0013】(3R,5S)−3,5−O−イソプロピ
リデンオクタン酸メチル、(3R,5S)−3,5−O
−イソプロピリデンオクタン酸エチル、(3R,5S)
−3,5−O−イソプロピリデンオクタン酸プロピル、
(3R,5S)−3,5−O−イソプロピリデンオクタ
ン酸イソプロピル、(3R,5S)−3,5−O−イソ
プロピリデンオクタン酸ブチル。(3R,5S)-3,5-O-isopropylideneoctanoate methyl, (3R,5S)-3,5-O
-Ethyl isopropylidene octanoate, (3R,5S)
-3,5-O-isopropylidene propyl octoate,
Isopropyl (3R,5S)-3,5-O-isopropylideneoctanoate, (3R,5S)-butyl-3,5-O-isopropylideneoctanoate.
【0014】(3R,5S)−3,5−O−イソプロピ
リデン−6−メチルヘプタン酸メチル、(3R,5S)
−3,5−O−イソプロピリデン−6−メチルヘプタン
酸エチル、(3R,5S)−3,5−O−イソプロピリ
デン−6−メチルヘプタン酸プロピル、(3R,5S)
−3,5−O−イソプロピリデン−6−メチルヘプタン
酸イソプロピル、(3R,5S)−3,5−O−イソプ
ロピリデン−6−メチルヘプタン酸ブチル。(3R,5S)-3,5-O-isopropylidene-6-methylheptanoate, (3R,5S)
-3,5-O-isopropylidene-6-methylheptanoate ethyl, (3R,5S) -3,5-O-isopropylidene-6-methylheptanoate propyl, (3R,5S)
Isopropyl -3,5-O-isopropylidene-6-methylheptanoate, (3R,5S)-butyl-3,5-O-isopropylidene-6-methylheptanoate.
【0015】(3S,5R)−3,5−O−イソプロピ
リデンヘキサン酸メチル、(3S,5R)−3,5−O
−イソプロピリデンヘキサン酸エチル、(3S,5R)
−3,5−O−イソプロピリデンヘキサン酸プロピル、
(3S,5R)−3,5−O−イソプロピリデンヘキサ
ン酸イソプロピル、(3S,5R)−3,5−O−イソ
プロピリデンヘキサン酸ブチル。(3S,5R)-3,5-O-isopropylidenehexanoate, (3S,5R)-3,5-O
-ethyl isopropylidenehexanoate, (3S,5R)
-3,5-O-isopropylidenehexanoate propyl,
Isopropyl (3S,5R)-3,5-O-isopropylidenehexanoate, butyl (3S,5R)-3,5-O-isopropylidenehexanoate.
【0016】(3S,5R)−3,5−O−イソプロピ
リデンヘプタン酸メチル、(3S,5R)−3,5−O
−イソプロピリデンヘプタン酸エチル、(3S,5R)
−3,5−O−イソプロピリデンヘプタン酸プロピル、
(3S,5R)−3,5−O−イソプロピリデンヘプタ
ン酸イソプロピル、(3S,5R)−3,5−O−イソ
プロピリデンヘプタン酸ブチル。(3S,5R)-3,5-O-isopropylideneheptanoate methyl, (3S,5R)-3,5-O
-isopropylidene ethyl heptanoate, (3S,5R)
-3,5-O-isopropylidene propyl heptanoate,
(3S,5R)-isopropyl-3,5-O-isopropylideneheptanoate, (3S,5R)-butyl-3,5-O-isopropylideneheptanoate.
【0017】(3S,5R)−3,5−O−イソプロピ
リデンオクタン酸メチル、(3S,5R)−3,5−O
−イソプロピリデンオクタン酸エチル、(3S,5R)
−3,5−O−イソプロピリデンオクタン酸プロピル、
(3S,5R)−3,5−O−イソプロピリデンオクタ
ン酸イソプロピル、(3S,5R)−3,5−O−イソ
プロピリデンオクタン酸ブチル。(3S,5R)-3,5-O-isopropylideneoctanoate methyl, (3S,5R)-3,5-O
-Ethyl isopropylidene octanoate, (3S,5R)
-3,5-O-isopropylidene propyl octoate,
(3S,5R)-isopropyl-3,5-O-isopropylideneoctanoate, (3S,5R)-butyl-3,5-O-isopropylideneoctanoate.
【0018】(3S,5R)−3,5−O−イソプロピ
リデン−6−メチルヘプタン酸メチル、(3S,5R)
−3,5−O−イソプロピリデン−6−メチルヘプタン
酸エチル、(3S,5R)−3,5−O−イソプロピリ
デン−6−メチルヘプタン酸プロピル、(3S,5R)
−3,5−O−イソプロピリデン−6−メチルヘプタン
酸イソプロピル、(3S,5R)−3,5−O−イソプ
ロピリデン−6−メチルヘプタン酸ブチル等である。(3S,5R)-3,5-O-isopropylidene-6-methylheptanoate, (3S,5R)
-3,5-O-isopropylidene-6-methylheptanoate ethyl, (3S,5R) -3,5-O-isopropylidene-6-methylheptanoate propyl, (3S,5R)
These include isopropyl -3,5-O-isopropylidene-6-methylheptanoate, butyl (3S,5R)-3,5-O-isopropylidene-6-methylheptanoate, and the like.
【0019】次に本発明の化合物の製法を述べる。本発
明の光学活性3,5−アンチ−ジヒドロキシカルボン酸
エステル誘導体(Ia,Ib,IIa,IIb)は、ラ
セミ体の3−ヒドロキシカルボン酸エステル(III)
を出発原料として以下の反応工程に従って製造すること
が出来る。Next, the method for producing the compound of the present invention will be described. The optically active 3,5-anti-dihydroxycarboxylic acid ester derivatives (Ia, Ib, IIa, IIb) of the present invention are racemic 3-hydroxycarboxylic acid esters (III).
It can be produced according to the following reaction steps using as a starting material.
【0020】[0020]
【化5】[C5]
【0021】(式中、R1 、R2 、R3 はアルキ
ル基を表し、R4 は保護基を表す。*は不斉炭素を表
す。)前記式(IV) で表される化合物はラセミ体の
3−ヒドロキシカルボン酸エステル(III)をリパー
ゼを用いて光学分割することにより、(R)−、(S)
−体各々を光学純度良く取得することができる(特願平
1−39297)。(In the formula, R1, R2, and R3 represent an alkyl group, R4 represents a protecting group, and * represents an asymmetric carbon.) The compound represented by the above formula (IV) is a racemic 3- By optically resolving hydroxycarboxylic acid ester (III) using lipase, (R)-, (S)
- can be obtained with high optical purity (Japanese Patent Application No. 1-39297).
【0022】次に式(V)で表される化合物は、式(I
V) で表される化合物の水酸基を常法に従って保護す
ることにより容易に合成できる。保護基の例としては、
テトラヒドロピラニル基、t−ブチルジメチルシリル基
、ベンジル基、メトキシエトキシメチル基等が挙げられ
る。例えば、テトラヒドロピラニル基はピリジニウム
p−トルエンスルホネート等を触媒とする3,4−ジヒ
ドロ−2H−ピランとの反応により、容易に導入するこ
とが出来る。Next, the compound represented by the formula (V) is a compound represented by the formula (I
It can be easily synthesized by protecting the hydroxyl group of the compound represented by V) according to a conventional method. Examples of protecting groups are:
Examples include a tetrahydropyranyl group, a t-butyldimethylsilyl group, a benzyl group, a methoxyethoxymethyl group, and the like. For example, the tetrahydropyranyl group is pyridinium
It can be easily introduced by reaction with 3,4-dihydro-2H-pyran using p-toluenesulfonate or the like as a catalyst.
【0023】式(V)で表される化合物は、塩基性条件
下に加水分解を行うことにより、式(VI)で表される
化合物に容易に変換することが出来る。反応に用いられ
る塩基の例としては、水酸化ナトリウム、水酸化カリウ
ム、水酸化リチウム等が挙げられる。反応溶媒としては
、無溶媒またはメタノール、エタノール等のアルコール
系溶媒、これらと水との混合溶媒を用いることが出来る
。反応温度は−20℃〜50℃が適当であり、特に好ま
しくは0℃〜25℃である。The compound represented by formula (V) can be easily converted into the compound represented by formula (VI) by hydrolysis under basic conditions. Examples of the base used in the reaction include sodium hydroxide, potassium hydroxide, lithium hydroxide, and the like. As the reaction solvent, no solvent, an alcoholic solvent such as methanol or ethanol, or a mixed solvent of these and water can be used. The reaction temperature is suitably -20°C to 50°C, particularly preferably 0°C to 25°C.
【0024】式(VII)で表される化合物は、式(V
I)で表される化合物をN,N’−カルボニルジイミダ
ゾールと反応させてイミダゾライドとした後に、マロン
酸モノアルキルエステルとマグネシウム化合物とから調
整したマグネシウムマロネートと反応させることにより
良好な収率で得ることが出来る。反応に用いられるマグ
ネシウム化合物の例としては、塩化マグネシウム、臭化
マグネシウム等のハロゲン化マグネシウム、塩化イソプ
ロピルマグネシウム、臭化イソプロピルマグネシウム等
のハロゲン化アルキルマグネシウム等が挙げられる。反
応溶媒としては、テトラヒドロフラン、エーテル等のエ
ーテル系溶媒を用いることが出来る。反応温度は−30
℃〜50℃が適当であり、特に好ましくは0℃〜25℃
である。The compound represented by formula (VII) is a compound represented by formula (V
A good yield can be achieved by reacting the compound represented by I) with N,N'-carbonyldiimidazole to form an imidazolide, and then reacting it with magnesium malonate prepared from malonic acid monoalkyl ester and a magnesium compound. You can get it at Examples of the magnesium compound used in the reaction include magnesium halides such as magnesium chloride and magnesium bromide, and alkylmagnesium halides such as isopropylmagnesium chloride and isopropylmagnesium bromide. As the reaction solvent, ether solvents such as tetrahydrofuran and ether can be used. The reaction temperature is -30
℃~50℃ is suitable, particularly preferably 0℃~25℃
It is.
【0025】式(VII)で表される化合物は、水酸基
の保護基を適当な方法で脱保護することにより式(VI
II) で表される化合物に容易に変換することが出来
る。例えば、水酸基がテトラヒドロピラニル基で保護さ
れた化合物は、酸性条件下脱保護される。反応に用いら
れる酸の例としては、酢酸、塩酸、p−トルエンスルホ
ン酸、ピリジニウム p−トルエンスルホネート等が挙
げられる。
反応溶媒としては、メタノール、エタノール等のアルコ
ール系溶媒、テトラヒドロフラン等のエーテル系溶媒、
またはこれらと水との混合溶媒を用いることが出来る。
反応温度は−20℃〜100 ℃が適当であり、特に好
ましくは0℃〜50℃である。The compound represented by formula (VII) can be obtained by deprotecting the hydroxyl protecting group by an appropriate method.
II) It can be easily converted into the compound represented by: For example, a compound whose hydroxyl group is protected with a tetrahydropyranyl group is deprotected under acidic conditions. Examples of acids used in the reaction include acetic acid, hydrochloric acid, p-toluenesulfonic acid, pyridinium p-toluenesulfonate, and the like. As the reaction solvent, alcohol solvents such as methanol and ethanol, ether solvents such as tetrahydrofuran,
Alternatively, a mixed solvent of these and water can be used. The reaction temperature is suitably -20°C to 100°C, particularly preferably 0°C to 50°C.
【0026】式(Ia,Ib)で表される化合物は、式
(VIII)で表される化合物を適当な還元剤を用いて
高立体選択的に還元することにより得ることが出来る。
反応に用いられる還元剤の例としては、水素化ホウ素テ
トラメチルアンモニウム、水素化ホウ素テトラブチルア
ンモニウム、水素化ホウ素ナトリウム、テトラメチルア
ンモニウムトリアセトキシボロヒドリド、テトラブチル
アンモニウムトリアセトキシボロヒドリド、ナトリウム
トリアセトキシボロヒドリド等が挙げられる。反応溶媒
としては、酢酸、プロピオン酸等の低級カルボン酸、ま
たはこれらとアセトニトリル、テトラヒドロフラン、ア
セトン等との混合溶媒を用いることが出来るが、その際
の酢酸の割合は全体の10%以上、より好ましくは50
%以上である。反応温度は−78℃〜50℃が適当であ
り、特に好ましくは−40℃〜25℃である。The compounds represented by formulas (Ia, Ib) can be obtained by highly stereoselectively reducing the compound represented by formula (VIII) using an appropriate reducing agent. Examples of reducing agents used in the reaction include tetramethylammonium borohydride, tetrabutylammonium borohydride, sodium borohydride, tetramethylammonium triacetoxyborohydride, tetrabutylammonium triacetoxyborohydride, sodium triacetoxyborohydride. Examples include hydride. As the reaction solvent, a lower carboxylic acid such as acetic acid or propionic acid, or a mixed solvent of these with acetonitrile, tetrahydrofuran, acetone, etc. can be used, but the proportion of acetic acid in this case is preferably 10% or more of the total, more preferably. is 50
% or more. The reaction temperature is suitably -78°C to 50°C, particularly preferably -40°C to 25°C.
【0027】最後に、式(Ia,Ib)で表される化合
物は、ピリジニウム p−トルエンスルホネート等を触
媒として2,2−ジメトキシプロパンと反応させること
により、式(IIa, IIb) で表される化合物に
容易に導くことが出来る。以上の操作により、光学活性
(3R,5S)−または(3S,5R)−3,5−ジヒ
ドロキシカルボン酸エステル誘導体(式(Ia,Ib)
、式(IIa, IIb))を各々得ることが出来る。Finally, the compound represented by formula (Ia, Ib) can be prepared by reacting it with 2,2-dimethoxypropane using pyridinium p-toluenesulfonate or the like as a catalyst. It can be easily led to compounds. By the above operations, the optically active (3R,5S)- or (3S,5R)-3,5-dihydroxycarboxylic acid ester derivative (formula (Ia, Ib)
, formulas (IIa, IIb)) can be obtained.
【0028】[0028]
【発明の効果】本発明の光学活性3,5−アンチ−ジヒ
ドロキシカルボン酸エステル誘導体は生理活性物質や機
能性物質の合成中間体として極めて応用範囲の広い有用
な化合物になり得る。例えば、本化合物を中間体として
高脂血症治療薬として有用なコンパクチン類縁体を簡便
に合成する事が出来る。Effects of the Invention The optically active 3,5-anti-dihydroxycarboxylic acid ester derivatives of the present invention can be useful compounds with an extremely wide range of applications as synthetic intermediates for physiologically active substances and functional substances. For example, compactin analogs useful as therapeutic agents for hyperlipidemia can be easily synthesized using the present compound as an intermediate.
【0029】[0029]
【実施例】以下、実施例により本発明を更に詳しく説明
するが、本発明はこれらの実施例によって制限されるも
のではない。
実施例1
(3R,5S)−3,5−ジヒドロキシヘプタン酸メチ
ル及び(3R,5S)−3,5−O−イソプロピリデン
ヘプタン酸メチルの製造
工程1
dl−3−ヒドロキシペンタン酸メチル9.1g、トリ
カプロイン29.0g、リパーゼアマノP3.0gの混
合物を38℃で70時間攪拌した。吸引濾過によりリパ
ーゼを除去した後、蒸留により精製を行い、(S)−(
+)−3−ヒドロキシペンタン酸メチル3.8g及び蒸
留残渣として(R)−(+)−3−ヘキサノイルオキシ
ペンタン酸メチル5.7gを得た。(S)−(+)−3
−ヒドロキシペンタン酸メチル2.3gとトリカプロイ
ン7.0g、リパーゼアマノP1.0gの混合物を、再
び38℃で70時間攪拌した。吸引濾過によりリパーゼ
を除去した後、蒸留により精製を行い、(S)−(+)
−3−ヒドロキシペンタン酸メチル0.9g、及び蒸留
残渣として、(R)−(+)−3−ヘキサノイルオキシ
ペンタン酸メチル0.4gを得た。Eu(hfc)3を
シフト試薬として用いNMRにより(S)−(+)−3
−ヒドロキシペンタン酸メチルの光学純度を検定したと
ころ、約99%eeであることが判った。本化合物の
1HNMRチャートは良くその構造を支持していた。EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited by these Examples. Example 1 Production process 1 of methyl (3R,5S)-3,5-dihydroxyheptanoate and methyl (3R,5S)-3,5-O-isopropylideneheptanoate 9.1 g of methyl dl-3-hydroxypentanoate , 29.0 g of Tricaproin, and 3.0 g of Lipase Amano P was stirred at 38° C. for 70 hours. After removing lipase by suction filtration, purification was performed by distillation to obtain (S)-(
3.8 g of methyl +)-3-hydroxypentanoate and 5.7 g of methyl (R)-(+)-3-hexanoyloxypentanoate were obtained as a distillation residue. (S)-(+)-3
-A mixture of 2.3 g of methyl hydroxypentanoate, 7.0 g of tricaproin, and 1.0 g of Lipase Amano P was stirred again at 38° C. for 70 hours. After removing lipase by suction filtration, purification is performed by distillation to obtain (S)-(+)
0.9 g of methyl -3-hydroxypentanoate and 0.4 g of methyl (R)-(+)-3-hexanoyloxypentanoate were obtained as a distillation residue. (S)-(+)-3 by NMR using Eu(hfc)3 as a shift reagent
- When the optical purity of methyl hydroxypentanoate was assayed, it was found to be about 99% ee. of this compound
The 1H NMR chart supported the structure well.
【0030】また、物性値は以下の通りであった。
沸点:62.5〜63.5℃/6mmHg比旋光度:+
37.9°(cl.46, CHCl3)。
工程2
(S)−3−ヒドロキシペンタン酸メチル31.70g
(240mmol) 、3,4−ジヒドロ−2H−ピラ
ン30.56g(363mmol) 、塩化メチレン3
00ml の混合物に、氷冷下ピリジニウム p−トル
エンスルホネート(以下PPTSと略記する) 6.1
1g(24.3mmol)(少量の塩化メチレンに溶解
)を加え、室温で6時間攪拌した。反応混合物を食塩水
(300ml)に注ぎ、酢酸エチル(200ml ×4
)で抽出した。抽出液を水、飽和食塩水(各100ml
)で順次洗浄後、無水硫酸マグネシウム上で乾燥した。
濾過、溶媒留去して、粗製の(S)−3−テトラヒドロ
ピラニルオキシペンタン酸メチル54.76gを得た。Further, the physical property values were as follows. Boiling point: 62.5-63.5℃/6mmHg Specific optical rotation: +
37.9° (cl.46, CHCl3). Step 2 31.70 g of methyl (S)-3-hydroxypentanoate
(240 mmol), 3,4-dihydro-2H-pyran 30.56 g (363 mmol), methylene chloride 3
Pyridinium p-toluenesulfonate (hereinafter abbreviated as PPTS) 6.1 to 00 ml of the mixture under ice cooling.
1 g (24.3 mmol) (dissolved in a small amount of methylene chloride) was added and stirred at room temperature for 6 hours. The reaction mixture was poured into brine (300 ml) and ethyl acetate (200 ml x 4
) was extracted. The extract was mixed with water and saturated saline (100 ml each)
) and then dried over anhydrous magnesium sulfate. Filtration and solvent distillation were performed to obtain 54.76 g of crude methyl (S)-3-tetrahydropyranyloxypentanoate.
【0031】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.1(m, 8H), 2.3−2.9(m, 2
H),3.3−4.2(m, 2H), 3.7(s,
3H), 4.0(quint, 1H), 4.6
−5.0(m, 1H)。
工程3
粗製の(S)−3−テトラヒドロピラニルオキシペンタ
ン酸メチル10.18g(44.6mmol)をメタノ
ール22.3mlに溶解し、氷冷下、10%水酸化カリ
ウム水溶液44.6ml(89.2mmol)を滴下し
た。氷冷下4時間、更に室温で30分間攪拌した。反応
混合物を6N塩酸(14.9ml)で中和した後、塩化
メチレン(150ml×4)で抽出した。抽出液を無水
硫酸マグネシウム上で乾燥、濾過、溶媒留去し、粗製の
(S)−3−テトラヒドロピラニルオキシペンタン酸8
.81g を得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.1 (m, 8H), 2.3-2.9 (m, 2
H), 3.3-4.2 (m, 2H), 3.7 (s,
3H), 4.0 (quint, 1H), 4.6
-5.0 (m, 1H). Step 3 10.18 g (44.6 mmol) of crude methyl (S)-3-tetrahydropyranyloxypentanoate was dissolved in 22.3 ml of methanol, and 44.6 ml (89 mmol) of 10% aqueous potassium hydroxide solution was dissolved under ice cooling. 2 mmol) was added dropwise. The mixture was stirred for 4 hours under ice cooling and further stirred for 30 minutes at room temperature. The reaction mixture was neutralized with 6N hydrochloric acid (14.9 ml) and then extracted with methylene chloride (150 ml x 4). The extract was dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off to give crude (S)-3-tetrahydropyranyloxypentanoic acid 8.
.. 81g was obtained.
【0032】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.1(m, 8H), 2.3−2.9(m, 2
H),3.3−3.7(m, 1H), 3.7−4.
2(m, 1H), 4.0(quint, 1H),
4.6−5.1(m, 1H),9.8(brs, 1
H)。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.1 (m, 8H), 2.3-2.9 (m, 2
H), 3.3-3.7 (m, 1H), 3.7-4.
2 (m, 1H), 4.0 (quint, 1H),
4.6-5.1 (m, 1H), 9.8 (brs, 1
H).
【0033】工程4
粗製の(S)−3−テトラヒドロピラニルオキシペンタ
ン酸8.81g(43.6mmol)をテトラヒドロフ
ラン88mlに溶解し、氷冷下、N,N’−カルボニル
ジイミダゾール10.86g(67.0mmol)を加
えて室温で20時間攪拌し、イミダゾライドを得た。Step 4 8.81 g (43.6 mmol) of crude (S)-3-tetrahydropyranyloxypentanoic acid was dissolved in 88 ml of tetrahydrofuran, and 10.86 g (43.6 mmol) of N,N'-carbonyldiimidazole was dissolved under ice cooling. 67.0 mmol) was added thereto and stirred at room temperature for 20 hours to obtain imidazolide.
【0034】マロン酸モノメチルエステル10.34g
(87.6mmol)をテトラヒドロフラン100ml
に溶解し、氷冷下塩化マグネシウム4.86g(51
.0mmol) を加えた。続いてトリエチルアミン1
4ml(100mmol) を内温が10℃以下を保つ
ように滴下し、同温度で1時間攪拌した。前記イミダゾ
ライドを滴下した後、室温で48時間攪拌した。反応混
合物を塩化アンモニウム54gを含む水(200ml)
に注ぎ、酢酸エチル(100ml×4)で抽出した。
抽出液を1N塩酸、飽和重曹水、水、飽和食塩水(各5
0ml)で順次洗浄後、無水硫酸マグネシウム上で乾燥
した。濾過、溶媒留去し、粗製の(S)−3−オキソ−
5−テトラヒドロピラニルオキシヘプタン酸メチル13
.20gを得た。シリカゲルカラムクロマトグラフィー
(ヘプタン:酢酸エチル10:1→5:1)で精製し、
(S)−3−オキソ−5−テトラヒドロピラニルオキシ
ヘプタン酸メチル8.98g(34.8mmol) を
得た。工程1で得られた(S)−3−ヒドロキシペンタ
ン酸メチルからの通算収率は78%であった。[0034] Malonic acid monomethyl ester 10.34g
(87.6 mmol) in 100 ml of tetrahydrofuran
4.86 g (51 g) of magnesium chloride dissolved in
.. 0 mmol) was added. followed by triethylamine 1
4 ml (100 mmol) was added dropwise so as to keep the internal temperature below 10°C, and the mixture was stirred at the same temperature for 1 hour. After the imidazolide was added dropwise, the mixture was stirred at room temperature for 48 hours. The reaction mixture was mixed with water (200 ml) containing 54 g of ammonium chloride.
and extracted with ethyl acetate (100 ml x 4). The extract was mixed with 1N hydrochloric acid, saturated aqueous sodium bicarbonate, water, and saturated saline (5 each
0 ml) and dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude (S)-3-oxo-
Methyl 5-tetrahydropyranyloxyheptanoate 13
.. 20g was obtained. Purified by silica gel column chromatography (heptane: ethyl acetate 10:1 → 5:1),
8.98 g (34.8 mmol) of methyl (S)-3-oxo-5-tetrahydropyranyloxyheptanoate was obtained. The total yield from methyl (S)-3-hydroxypentanoate obtained in Step 1 was 78%.
【0035】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.0(m, 8H), 2.3−3.0(m, 2
H),3.2−4.2(m, 5H), 3.7(s,
3H), 4.5−4.8(m, 1H)。
工程5
(S)−3−オキソ−5−テトラヒドロピラニルオキシ
ヘプタン酸メチル8.98g(34.8mmol)、メ
タノール90ml、水45mlの混合物に、氷冷下、p
−トルエンスルホン酸1水和物8.68g(45.6m
mol)(少量の水に溶解)を滴下し、同温度で5時間
攪拌した。反応混合物を、重曹39gを含む水(180
ml)に注ぎ、酢酸エチル(100ml×4)で抽出し
た。抽出液を、飽和重曹水、水、飽和食塩水(各50m
l)で順次洗浄後、無水硫酸マグネシウム上で乾燥した
。濾過、溶媒留去し、粗製の(S)−3−オキソ−5−
ヒドロキシヘプタン酸メチル5.78gを得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.0 (m, 8H), 2.3-3.0 (m, 2
H), 3.2-4.2 (m, 5H), 3.7 (s,
3H), 4.5-4.8 (m, 1H). Step 5 P
-Toluenesulfonic acid monohydrate 8.68g (45.6m
mol) (dissolved in a small amount of water) was added dropwise, and the mixture was stirred at the same temperature for 5 hours. The reaction mixture was mixed with water (180 g) containing 39 g of baking soda.
ml) and extracted with ethyl acetate (100 ml x 4). The extract was diluted with saturated sodium bicarbonate solution, water, and saturated saline (50 m each).
After sequentially washing with 1), it was dried over anhydrous magnesium sulfate. After filtration and evaporation, the crude (S)-3-oxo-5-
5.78 g of methyl hydroxyheptanoate was obtained.
【0036】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ1.0(t, 3H), 1.3−
1.8(m, 2H), 2.6−2.8(m, 2H
),3.0(brs, 1H), 3.5(s, 2H
), 3.7(s, 3H), 3.8−4.2(m,
1H)。
工程6
アセトニトリル35ml、酢酸47mlの混合溶液に、
氷冷下、水素化ホウ素テトラメチルアンモニウム6.1
2g(68.8mmol)を少量ずつ加え、室温で30
分間攪拌した。続いて氷冷下、粗製の(S)−3−オキ
ソ−5−ヒドロキシヘプタン酸メチル7.03g(40
.4mmol) を滴下し、同温度で6時間攪拌した。
反応混合物を重曹85gを含む水(140ml)に滴下
し酢酸エチル(140ml×4)で抽出した。抽出液を
飽和重曹水、水、飽和食塩水(各70ml)で順次洗浄
後、無水硫酸マグネシウム上で乾燥した。濾過、溶媒留
去し、粗製の(3R,5S)−3,5−ジヒドロキシヘ
プタン酸メチル5.30gを得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ1.0(t, 3H), 1.3-
1.8 (m, 2H), 2.6-2.8 (m, 2H
), 3.0(brs, 1H), 3.5(s, 2H
), 3.7(s, 3H), 3.8-4.2(m,
1H). Step 6 Add a mixed solution of 35 ml of acetonitrile and 47 ml of acetic acid,
Tetramethylammonium borohydride 6.1 under ice cooling
Add 2g (68.8mmol) little by little and let it cool for 30 minutes at room temperature.
Stir for a minute. Subsequently, under ice-cooling, 7.03 g of crude methyl (S)-3-oxo-5-hydroxyheptanoate (40
.. 4 mmol) was added dropwise, and the mixture was stirred at the same temperature for 6 hours. The reaction mixture was added dropwise to water (140 ml) containing 85 g of sodium bicarbonate, and extracted with ethyl acetate (140 ml x 4). The extract was washed successively with saturated aqueous sodium bicarbonate, water, and saturated brine (70 ml each), and then dried over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 5.30 g of crude methyl (3R,5S)-3,5-dihydroxyheptanoate.
【0037】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(t, 3H), 1.3−
1.9(m, 4H), 2.3−2.7(m, 2H
),3.4−4.0(m, 1H), 3.7(s,
3H), 4.1−4.6(m, 1H)。
工程7
粗製の(3R,5S)−3,5−ジヒドロキシヘプタン
酸メチル5.30g(30.1mmol)を塩化メチレ
ン37.0mlに溶解し、氷冷下2,2−ジメトキシプ
ロパン37.0ml(303mmol)、PPTS 0
.78g(3.1mmol) を加えて室温で4時間攪
拌した。反応混合物を食塩水(100ml)に注ぎ塩化
メチレン(75ml×4)で抽出した。抽出液を水、飽
和食塩水(各50ml)で順次洗浄後、無水硫酸マグネ
シウム上で乾燥した。濾過、溶媒留去して得た残渣を再
び塩化メチレン12.0mlに溶解し、氷冷下2,2−
ジメトキシプロパン12.0ml(98.4mmol)
、PPTS 0.26g(1.0mmol) を加えて
室温で5時間攪拌した。反応混合物を飽和重曹水(50
ml) に注ぎ、塩化メチレン(75ml×4)で抽出
した。抽出液を水、飽和食塩水(各50ml)で順次洗
浄後、無水硫酸マグネシウム上で乾燥した。濾過、溶媒
留去し、粗製の(3R,5S)−3,5−O−イソプロ
ピリデンヘプタン酸メチル5.81gを得た。蒸留によ
り精製し、(3R,5S)−3,5−O−イソプロピリ
デンヘプタン酸メチル4.33g(20.0mmol)
を得た。工程4で得られた(S)−3−オキソ−5−
テトラヒドロピラニルオキシヘプタン酸メチルからの通
算収率は46%であった。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9(t, 3H), 1.3-
1.9 (m, 4H), 2.3-2.7 (m, 2H
), 3.4-4.0 (m, 1H), 3.7 (s,
3H), 4.1-4.6 (m, 1H). Step 7 5.30 g (30.1 mmol) of crude methyl (3R,5S)-3,5-dihydroxyheptanoate was dissolved in 37.0 ml of methylene chloride, and 37.0 ml (303 mmol) of 2,2-dimethoxypropane was dissolved under ice cooling. ), PPTS 0
.. 78 g (3.1 mmol) was added and stirred at room temperature for 4 hours. The reaction mixture was poured into brine (100 ml) and extracted with methylene chloride (75 ml x 4). The extract was washed successively with water and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. The residue obtained by filtration and solvent distillation was dissolved again in 12.0 ml of methylene chloride, and 2,2-
Dimethoxypropane 12.0ml (98.4mmol)
, 0.26 g (1.0 mmol) of PPTS was added thereto, and the mixture was stirred at room temperature for 5 hours. The reaction mixture was diluted with saturated sodium bicarbonate solution (50%
ml) and extracted with methylene chloride (75 ml x 4). The extract was washed successively with water and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 5.81 g of crude methyl (3R,5S)-3,5-O-isopropylideneheptanoate. Purified by distillation to obtain 4.33 g (20.0 mmol) of methyl (3R,5S)-3,5-O-isopropylideneheptanoate.
I got it. (S)-3-oxo-5- obtained in step 4
The total yield from methyl tetrahydropyranyloxyheptanoate was 46%.
【0038】キャピラリーガスクロマトグラフィーによ
る分析の結果、このものは(3R,5S)−体と(3S
,5S)−体との約9:1混合物であった。本化合物は
1H NMRチャート解析により同定した。 1HN
MR(CDCl3)のデータを下記に示す。
1H NMR:δ0.9(t, 3H), 1.2−
2.0(m, 4H), 1.3(s, 3H), 1
.4(s, 3H),2.5(dd, 1H), 2.
5(dd, 1H), 3.7(s, 3H), 3.
7(quint, 1H), 4.2(quint,
1H)また、物性値は以下の通りであった。As a result of analysis by capillary gas chromatography, this compound has a (3R,5S)-isomer and a (3S
, 5S)-isomer at a ratio of approximately 9:1. This compound was identified by 1H NMR chart analysis. 1HN
MR (CDCl3) data is shown below. 1H NMR: δ0.9(t, 3H), 1.2-
2.0 (m, 4H), 1.3 (s, 3H), 1
.. 4 (s, 3H), 2.5 (dd, 1H), 2.
5 (dd, 1H), 3.7 (s, 3H), 3.
7 (quint, 1H), 4.2 (quint,
1H) In addition, the physical property values were as follows.
【0039】沸点:79℃/2mmHg比旋光度:+3
7.0°(cl.064, CHCl3) 。
実施例2
(3R,5S)−3,5−ジヒドロキシヘプタン酸メチ
ル及び(3R,5S)−3,5−O−イソプロピリデン
ヘプタン酸メチルの製造
工程1
実施例1の工程1で得られる(S)−3−ヒドロキシペ
ンタン酸メチル770mg(5.83mmol) 、t
−ブチルジメチルシリルクロライド1.34g(8.8
9mmol) 、イミダゾール600mg(8.81m
mol)、ジメチルホルムアミド8mlの混合物を室温
で17時間攪拌した。反応混合物を飽和重曹水(80m
l) に注ぎ、酢酸エチル(80ml×4)で抽出した
。抽出液を水、飽和食塩水(各100ml)で順次洗浄
後、無水硫酸マグネシウム上で乾燥した。濾過、溶媒留
去し、粗製の(S)−3−t−ブチルジメチルシリルオ
キシペンタン酸メチル1.71gを得た。シリカゲルカ
ラムクロマトグラフィー(ヘプタン:酢酸エチル20:
1)で精製し、(S)−3−t−ブチルジメチルシリル
オキシペンタン酸メチル1.39g(5.64mmol
) を得た。収率97%。Boiling point: 79°C/2mmHg Specific rotation: +3
7.0° (cl.064, CHCl3). Example 2 Production step 1 of methyl (3R,5S)-3,5-dihydroxyheptanoate and methyl (3R,5S)-3,5-O-isopropylideneheptanoate (S obtained in step 1 of Example 1) )-3-hydroxypentanoate methyl 770 mg (5.83 mmol), t
-butyldimethylsilyl chloride 1.34g (8.8
9 mmol), imidazole 600 mg (8.81 m
mol) and dimethylformamide (8 ml) was stirred at room temperature for 17 hours. The reaction mixture was diluted with saturated sodium bicarbonate water (80 m
1) and extracted with ethyl acetate (80 ml x 4). The extract was washed successively with water and saturated brine (100 ml each), and then dried over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 1.71 g of crude methyl (S)-3-t-butyldimethylsilyloxypentanoate. Silica gel column chromatography (heptane: ethyl acetate 20:
1) to obtain 1.39 g (5.64 mmol) of methyl (S)-3-t-butyldimethylsilyloxypentanoate.
) obtained. Yield 97%.
【0040】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.1(s, 6H), 0.8−
1.1(m, 3H), 0.9(s, 9H), 1
.4−1.7(m, 2H),2.4(d, 2H),
3.7(s, 3H), 4.1(quint, 1
H)。
工程2
(S)−3−t−ブチルジメチルシリルオキシペンタン
酸メチル1.39g(5.64mmol) をメタノー
ル2.9ml に溶解し、氷冷下10%水酸化カリウム
水溶液5.7ml(11.4mmol) を滴下した。
氷冷下4時間、更に室温で30分間攪拌した。反応混合
物を6N塩酸(1.9ml)で中和した後エーテル(1
00ml×4)で抽出した。抽出液を無水硫酸マグネシ
ウム上で乾燥、濾過、溶媒留去し、粗製の(S)−3−
t−ブチルジメチルシリルオキシペンタン酸1.30g
を得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.1 (s, 6H), 0.8-
1.1 (m, 3H), 0.9 (s, 9H), 1
.. 4-1.7 (m, 2H), 2.4 (d, 2H),
3.7(s, 3H), 4.1(quint, 1
H). Step 2 1.39 g (5.64 mmol) of methyl (S)-3-t-butyldimethylsilyloxypentanoate was dissolved in 2.9 ml of methanol, and 5.7 ml (11.4 mmol) of 10% aqueous potassium hydroxide solution was added under ice cooling. ) was dropped. The mixture was stirred for 4 hours under ice cooling and further stirred for 30 minutes at room temperature. The reaction mixture was neutralized with 6N hydrochloric acid (1.9 ml) and then diluted with ether (1.9 ml).
00ml x 4). The extract was dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off to obtain crude (S)-3-
t-butyldimethylsilyloxypentanoic acid 1.30g
I got it.
【0041】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.1(sx2, 6H), 0.
8−1.2(m, 3H), 0.9(s, 9H),
1.4−1.9(m, 2H), 2.5(d, 2H
), 4.1(quint, 1H), 9.6(br
s, 1H)。
工程3
粗製の(S)−3−t−ブチルジメチルシリルオキシペ
ンタン酸800mg(3.47mmol) をテトラヒ
ドロフラン9mlに溶解し、氷冷下、N,N’−カルボ
ニルジイミダゾール860mg(5.30mmol)
を加えて、室温で20時間攪拌し、イミダゾライドを得
た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.1 (sx2, 6H), 0.
8-1.2 (m, 3H), 0.9 (s, 9H),
1.4-1.9(m, 2H), 2.5(d, 2H
), 4.1(quint, 1H), 9.6(br
s, 1H). Step 3 800 mg (3.47 mmol) of crude (S)-3-t-butyldimethylsilyloxypentanoic acid was dissolved in 9 ml of tetrahydrofuran, and 860 mg (5.30 mmol) of N,N'-carbonyldiimidazole was dissolved under ice cooling.
was added and stirred at room temperature for 20 hours to obtain imidazolide.
【0042】マロン酸モノメチルエステル1.06g(
8.98mmol) をテトラヒドロフラン13.8m
lに溶解し、氷冷下、臭化イソプロピルマグネシウム1
.5 Mテトラヒドロフラン溶液13.2ml(19.
8mmol)を滴下して同温度で30分、室温で30分
、更に45℃で30分間攪拌した。再び氷冷し、前記イ
ミダゾライドを滴下した後、室温で24時間攪拌した。
反応混合物を1N塩酸(50ml) に注ぎ、酢酸エチ
ル(50ml×4)で抽出した。抽出液を水、飽和重曹
水、水、飽和食塩水(各50ml) で順次洗浄後、無
水硫酸マグネシウム上で乾燥した。濾過、溶媒留去し、
粗製の(S)−3−オキソ−5−t−ブチルジメチルシ
リルオキシヘプタン酸メチル780mg を得た。シリ
カゲルカラムクロマトグラフィー(ヘプタン:酢酸エチ
ル20:1)で精製し(S)−3−オキソ−5−t−ブ
チルジメチルシリルオキシヘプタン酸メチル580mg
(2.01mmol)を得た。工程1で得られた(S)
−3−t−ブチルジメチルシリルオキシペンタン酸メチ
ルからの通算収率は58%であった。1.06 g of malonic acid monomethyl ester (
8.98 mmol) and 13.8 m of tetrahydrofuran
1 of isopropylmagnesium bromide under ice-cooling.
.. 13.2 ml of 5 M tetrahydrofuran solution (19.
8 mmol) was added dropwise and stirred at the same temperature for 30 minutes, at room temperature for 30 minutes, and further at 45° C. for 30 minutes. The mixture was cooled with ice again, and the imidazolide was added dropwise, followed by stirring at room temperature for 24 hours. The reaction mixture was poured into 1N hydrochloric acid (50 ml) and extracted with ethyl acetate (50 ml x 4). The extract was washed successively with water, saturated aqueous sodium bicarbonate, water, and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. Filtration, evaporation of solvent,
780 mg of crude methyl (S)-3-oxo-5-t-butyldimethylsilyloxyheptanoate was obtained. Methyl (S)-3-oxo-5-t-butyldimethylsilyloxyheptanoate 580 mg purified by silica gel column chromatography (heptane:ethyl acetate 20:1)
(2.01 mmol) was obtained. (S) obtained in step 1
The total yield from methyl -3-t-butyldimethylsilyloxypentanoate was 58%.
【0043】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.0(sx2, 6H), 0.
6−1.1(m, 3H), 0.8(s, 9H),
1.1−1.8(m, 2H), 2.6(ddx2,
2H), 3.4(s, 2H), 3.7(s,
3H), 4.1(quint, 1H)工程4
(S)−3−オキソ−5−t−ブチルジメチルシリルオ
キシヘプタン酸メチル350mg(1.21mmol)
を46%フッ化水素酸−アセトニトリル(5:95)
混合溶液3.1ml に溶解し、氷冷下、1時間攪拌し
た。反応混合物を氷水(30ml) に注ぎ、酢酸エチ
ル(30ml×4)で抽出した。抽出液を飽和重曹水、
水、飽和食塩水(各30ml) で順次洗浄後、無水硫
酸マグネシウム上で乾燥した。濾過、溶媒留去し、粗製
の(S)−3−オキソ−5−ヒドロキシヘプタン酸メチ
ル300mg を得た。シリカゲルカラムクロマトグラ
フィー(ヘプタン:酢酸エチル 5:1→3:1)で精
製し(S)−3−オキソ−5−ヒドロキシヘプタン酸メ
チル140mg(0.80mmol) を得た。収率6
6%。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.0 (sx2, 6H), 0.
6-1.1 (m, 3H), 0.8 (s, 9H),
1.1-1.8 (m, 2H), 2.6 (ddx2,
2H), 3.4(s, 2H), 3.7(s,
3H), 4.1 (quint, 1H) Step 4 (S)-3-oxo-5-t-butyldimethylsilyloxyheptanoate methyl 350 mg (1.21 mmol)
46% hydrofluoric acid-acetonitrile (5:95)
The mixture was dissolved in 3.1 ml of the mixed solution and stirred for 1 hour under ice cooling. The reaction mixture was poured into ice water (30 ml) and extracted with ethyl acetate (30 ml x 4). Add the extract to saturated sodium bicarbonate water,
After washing successively with water and saturated saline (30 ml each), it was dried over anhydrous magnesium sulfate. Filtration and distillation of the solvent gave 300 mg of crude methyl (S)-3-oxo-5-hydroxyheptanoate. The product was purified by silica gel column chromatography (heptane:ethyl acetate 5:1→3:1) to obtain 140 mg (0.80 mmol) of methyl (S)-3-oxo-5-hydroxyheptanoate. Yield 6
6%.
【0044】本化合物の 1H NMRチャートは、実
施例1の工程5で得られたものに一致した。
工程5
アセトニトリル1ml、酢酸1mlの混合溶液に(S)
−3−オキソ−5−ヒドロキシヘプタン酸メチル130
mg(0.75mmol) を溶解し、氷冷下テトラメ
チルアンモニウムトリアセトキシボロヒドリド1.04
g(3.95mmol)を加えて同温度で4時間攪拌し
た。反応混合物を飽和重曹水(50ml) に注ぎ、酢
酸エチル(50ml×4)で抽出した。抽出液を飽和重
曹水、水、飽和食塩水(各25ml) で順次洗浄後、
無水硫酸マグネシウム上で乾燥した。濾過、溶媒留去し
、粗製の(3R,5S)−3,5−ジヒドロキシヘプタ
ン酸メチル120mg を得た。The 1H NMR chart of this compound matched that obtained in step 5 of Example 1. Step 5 Add (S) to a mixed solution of 1 ml of acetonitrile and 1 ml of acetic acid.
-Methyl 3-oxo-5-hydroxyheptanoate 130
mg (0.75 mmol) and add 1.04 mg (0.75 mmol) of tetramethylammonium triacetoxyborohydride under ice cooling.
g (3.95 mmol) and stirred at the same temperature for 4 hours. The reaction mixture was poured into saturated aqueous sodium bicarbonate (50 ml) and extracted with ethyl acetate (50 ml x 4). After washing the extract with saturated sodium bicarbonate solution, water, and saturated saline solution (25 ml each),
Dry over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 120 mg of crude methyl (3R,5S)-3,5-dihydroxyheptanoate.
【0045】本化合物の 1H NMRチャートは、実
施例1の工程6で得られたものに一致した。
工程6
粗製の(3R,5S)−3,5−ジヒドロキシヘプタン
酸メチル120mg(0.68mmol) を、塩化メ
チレン2mlに溶解し、氷冷下、2,2−ジメトキシプ
ロパン2ml(16.4mmol)、PPTS 40m
g(0.16mmol) を加えて室温で4時間攪拌し
た。反応混合物を飽和重曹水(50ml) に注ぎ、酢
酸エチル(50ml×4)で抽出した。抽出液を、水、
飽和食塩水(各50ml) で順次洗浄後、無水硫酸マ
グネシウム上で乾燥した。濾過、溶媒留去し、粗製の(
3R,5S)−3,5−O−イソプロピリデンヘプタン
酸メチル130mg を得た。シリカゲルカラムクロマ
トグラフィー(ヘプタン:酢酸エチル20:1)で精製
し、(3R,5S)−3,5−O−イソプロピリデンヘ
プタン酸メチル80mg(0.37mmol)を得た。
工程4で得られた(S)−3−オキソ−5−ヒドロキシ
ヘプタン酸メチルからの通算収率は50%であった。The 1H NMR chart of this compound matched that obtained in step 6 of Example 1. Step 6 120 mg (0.68 mmol) of crude methyl (3R,5S)-3,5-dihydroxyheptanoate was dissolved in 2 ml of methylene chloride, and 2 ml (16.4 mmol) of 2,2-dimethoxypropane was added under ice cooling. PPTS 40m
g (0.16 mmol) and stirred at room temperature for 4 hours. The reaction mixture was poured into saturated aqueous sodium bicarbonate (50 ml) and extracted with ethyl acetate (50 ml x 4). The extract, water,
After washing successively with saturated brine (50 ml each), it was dried over anhydrous magnesium sulfate. Filtration, evaporation and crude (
130 mg of methyl 3R,5S)-3,5-O-isopropylideneheptanoate was obtained. It was purified by silica gel column chromatography (heptane:ethyl acetate 20:1) to obtain 80 mg (0.37 mmol) of methyl (3R,5S)-3,5-O-isopropylideneheptanoate. The total yield from methyl (S)-3-oxo-5-hydroxyheptanoate obtained in Step 4 was 50%.
【0046】キャピラリーガスクロマトグラフィーによ
る分析の結果、このものは(3R,5S)−体と(3S
,5S)−体との約9:1混合物であった。本化合物の
1H NMRチャートは、実施例1の工程7で得られ
たものに一致した。
実施例3
(3S,5R)−3,5−ジヒドロキシヘプタン酸メチ
ル及び(3S,5R)−3,5−O−イソプロピリデン
ヘプタン酸メチルの製造
工程1
実施例1の工程1で得られる(R)−(+)−3−ヘキ
サノイルオキシペンタン酸メチル5.7g、1,2−ジ
クロロエタン48ml、エタノール48ml、硫酸0.
9ml の混合物を40時間還流した後、水、酢酸エチ
ルを加え攪拌した。分離した有機層を飽和重曹水、水で
順次洗浄し、無水硫酸マグネシウム上で乾燥した。濾過
、溶媒留去し、粗製の(R)−(−)−3−ヒドロキシ
ペンタン酸メチル2.8gを得た。蒸留により精製し、
(R)−(−)−3−ヒドロキシペンタン酸メチル1.
8gを得た。Eu(hfc)3をシフト試薬として用い
NMRにより光学純度を検定したところ、約95%ee
であった。本化合物の 1H NMRチャートは良くそ
の構造を支持していた。As a result of analysis by capillary gas chromatography, this compound has a (3R,5S)-isomer and a (3S
, 5S)-isomer at a ratio of approximately 9:1. The 1H NMR chart of this compound matched that obtained in Step 7 of Example 1. Example 3 Production process 1 of methyl (3S,5R)-3,5-dihydroxyheptanoate and methyl (3S,5R)-3,5-O-isopropylideneheptanoate (R )-(+)-Methyl 3-hexanoyloxypentanoate 5.7 g, 1,2-dichloroethane 48 ml, ethanol 48 ml, sulfuric acid 0.
After refluxing 9 ml of the mixture for 40 hours, water and ethyl acetate were added and stirred. The separated organic layer was washed successively with saturated aqueous sodium bicarbonate and water, and dried over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 2.8 g of crude methyl (R)-(-)-3-hydroxypentanoate. Purified by distillation,
Methyl (R)-(-)-3-hydroxypentanoate 1.
8g was obtained. When optical purity was assayed by NMR using Eu(hfc)3 as a shift reagent, it was found to be approximately 95% ee.
Met. The 1H NMR chart of this compound well supported its structure.
【0047】また、物性値は以下の通りであった。
沸点:62.5〜63.5℃/6mmHg比旋光度:−
35.5°(cl.55, CHCl3)。
工程2
(R)−3−ヒドロキシペンタン酸メチル10.12g
(76.6mmol)、3,4−ジヒドロ−2H−ピラ
ン9.76g(116mmol)、塩化メチレン100
ml の混合物に、氷冷下PPTS2.05g(8.1
6mmol)(少量の塩化メチレンに溶解)を加え室温
で6時間攪拌した。反応混合物を食塩水(100ml)
に注ぎ、酢酸エチル(100ml×4)で抽出した。抽
出液を水、飽和食塩水(各50ml)で順次洗浄後、無
水硫酸マグネシウム上で乾燥した。濾過、溶媒留去し、
粗製の(R)−3−テトラヒドロピラニルオキシペンタ
ン酸メチル16.75gを得た。Further, the physical property values were as follows. Boiling point: 62.5-63.5℃/6mmHg Specific optical rotation: -
35.5° (cl.55, CHCl3). Step 2 Methyl (R)-3-hydroxypentanoate 10.12g
(76.6 mmol), 3,4-dihydro-2H-pyran 9.76 g (116 mmol), methylene chloride 100
ml of the mixture, add 2.05 g (8.1 g) of PPTS under ice-cooling.
6 mmol) (dissolved in a small amount of methylene chloride) was added and stirred at room temperature for 6 hours. Pour the reaction mixture into brine (100ml)
and extracted with ethyl acetate (100 ml x 4). The extract was washed successively with water and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. Filtration, evaporation of solvent,
16.75 g of crude methyl (R)-3-tetrahydropyranyloxypentanoate was obtained.
【0048】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.1(m, 8H), 2.3−2.9(m, 2
H),3.3−4.2(m, 2H), 3.7(s,
3H), 4.0(quint, 1H), 4.6
−5.0(m, 1H)。
工程3
粗製の(R)−3−テトラヒドロピラニルオキシペンタ
ン酸メチル10.07g(46.6mmol)をメタノ
ール23.3mlに溶解し、氷冷下、10%水酸化カリ
ウム水溶液46.6ml(93.2mmol)を滴下し
た。氷冷下4時間、更に室温で30分間攪拌した。反応
混合物を6N塩酸(14.9ml)で中和した後、塩化
メチレン(150ml×4)で抽出した。抽出液を無水
硫酸マグネシウム上で乾燥、濾過、溶媒留去し、粗製の
(R)−3−テトラヒドロピラニルオキシペンタン酸9
.25gを得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.1 (m, 8H), 2.3-2.9 (m, 2
H), 3.3-4.2 (m, 2H), 3.7 (s,
3H), 4.0 (quint, 1H), 4.6
-5.0 (m, 1H). Step 3 10.07 g (46.6 mmol) of crude methyl (R)-3-tetrahydropyranyloxypentanoate was dissolved in 23.3 ml of methanol, and 46.6 ml (93.6 mmol) of a 10% aqueous potassium hydroxide solution was dissolved under ice cooling. 2 mmol) was added dropwise. The mixture was stirred for 4 hours under ice cooling and further stirred for 30 minutes at room temperature. The reaction mixture was neutralized with 6N hydrochloric acid (14.9 ml) and then extracted with methylene chloride (150 ml x 4). The extract was dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off to give crude (R)-3-tetrahydropyranyloxypentanoic acid 9.
.. 25g was obtained.
【0049】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.1(m, 8H), 2.3−2.9(m, 2
H), 3.3−3.7(m,1H), 3.7−4
.2(m, 1H), 4.0(quint, 1H)
, 4.6−5.1(m, 1H), 9.8(brs
, 1H)。
工程4
粗製の(R)−3−テトラヒドロピラニルオキシペンタ
ン酸12.84g(63.5mmol)をテトラヒドロ
フラン128ml に溶解し、氷冷下N,N’−カルボ
ニルジイミダゾール15.54g(95.8mmol)
を加えて室温で20時間攪拌し、イミダゾライドを得た
。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.1 (m, 8H), 2.3-2.9 (m, 2
H), 3.3-3.7 (m, 1H), 3.7-4
.. 2 (m, 1H), 4.0 (quint, 1H)
, 4.6-5.1 (m, 1H), 9.8 (brs
, 1H). Step 4 12.84 g (63.5 mmol) of crude (R)-3-tetrahydropyranyloxypentanoic acid was dissolved in 128 ml of tetrahydrofuran, and 15.54 g (95.8 mmol) of N,N'-carbonyldiimidazole was dissolved under ice cooling.
was added and stirred at room temperature for 20 hours to obtain imidazolide.
【0050】マロン酸モノメチルエステル15.07g
(128mmol) をテトラヒドロフラン300ml
に溶解し、氷冷下塩化マグネシウム6.91g(72
.6mmol) を加えた。続いてトリエチルアミン2
0ml(143mmol) を内温が10℃以下に保つ
ように滴下し、同温度で1時間攪拌した。前記イミダゾ
ライドを滴下した後、室温で48時間攪拌した。反応混
合物を塩化アンモニウム54gを含む水(300ml)
に注ぎ、酢酸エチル(150ml×4)で抽出した。抽
出液を1N塩酸、飽和重曹水、水、飽和食塩水(各75
ml) で順次洗浄後、無水硫酸マグネシウム上で乾燥
した。濾過、溶媒留去し、粗製の(R)−3−オキソ−
5−テトラヒドロピラニルオキシヘプタン酸メチル21
.92gを得た。シリカゲルカラムクロマトグラフィー
(ヘプタン:酢酸エチル10:1→5:1)で精製し、
(R)−3−オキソ−5−テトラヒドロピラニルオキシ
ヘプタン酸メチル11.53g(44.6mmol)を
得た。工程1で得られた(R)−3−ヒドロキシペンタ
ン酸メチルからの通算収率は70%であった。[0050] Malonic acid monomethyl ester 15.07g
(128 mmol) in 300 ml of tetrahydrofuran
6.91 g (72 g) of magnesium chloride dissolved in
.. 6 mmol) was added. followed by triethylamine 2
0 ml (143 mmol) was added dropwise so as to keep the internal temperature below 10°C, and the mixture was stirred at the same temperature for 1 hour. After the imidazolide was added dropwise, the mixture was stirred at room temperature for 48 hours. The reaction mixture was mixed with water (300 ml) containing 54 g of ammonium chloride.
and extracted with ethyl acetate (150 ml x 4). The extract was mixed with 1N hydrochloric acid, saturated aqueous sodium bicarbonate, water, and saturated saline (75% each
ml) and then dried over anhydrous magnesium sulfate. After filtration and evaporation of the solvent, the crude (R)-3-oxo-
Methyl 5-tetrahydropyranyloxyheptanoate 21
.. 92g was obtained. Purified by silica gel column chromatography (heptane: ethyl acetate 10:1 → 5:1),
11.53 g (44.6 mmol) of methyl (R)-3-oxo-5-tetrahydropyranyloxyheptanoate was obtained. The total yield from methyl (R)-3-hydroxypentanoate obtained in Step 1 was 70%.
【0051】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(dt, 3H), 1.3
−2.0(m, 8H), 2.3−3.0(m, 2
H),3.2−4.2(m, 5H), 3.7(s,
3H), 4.5−4.8(m, 1H)。
工程5
(R)−3−オキソ−5−テトラヒドロピラニルオキシ
ヘプタン酸メチル9.52g(36.9mmol) 、
メタノール95ml、水47.5mlの混合物に、氷冷
下、p−トルエンスルホン酸1水和物9.13g(48
.0mmol)(少量の水に溶解) を滴下し、同温度
で5時間攪拌した。反応混合物を重曹40gを含む水(
200ml)に注ぎ、酢酸エチル(100ml×4)で
抽出した。抽出液を、飽和重曹水、水、飽和食塩水(各
50ml) で順次洗浄後、無水硫酸マグネシウム上で
乾燥した。濾過、溶媒留去し、粗製の(R)−3−オキ
ソ−5−ヒドロキシヘプタン酸メチル6.20gを得た
。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9 (dt, 3H), 1.3
-2.0 (m, 8H), 2.3-3.0 (m, 2
H), 3.2-4.2 (m, 5H), 3.7 (s,
3H), 4.5-4.8 (m, 1H). Step 5 9.52 g (36.9 mmol) of methyl (R)-3-oxo-5-tetrahydropyranyloxyheptanoate,
To a mixture of 95 ml of methanol and 47.5 ml of water was added 9.13 g (48 ml) of p-toluenesulfonic acid monohydrate under ice cooling.
.. 0 mmol) (dissolved in a small amount of water) was added dropwise, and the mixture was stirred at the same temperature for 5 hours. The reaction mixture was mixed with water containing 40 g of baking soda (
200 ml) and extracted with ethyl acetate (100 ml x 4). The extract was washed successively with saturated aqueous sodium bicarbonate, water, and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. The mixture was filtered and the solvent was distilled off to obtain 6.20 g of crude methyl (R)-3-oxo-5-hydroxyheptanoate.
【0052】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ1.0(t, 3H), 1.3−
1.8(m, 2H), 2.6−2.8(m, 2H
),3.0(brs, 1H), 3.5(s, 2H
), 3.7(s, 3H), 3.8−4.2(m,
1H)。
工程6
アセトニトリル31ml、酢酸41.4mlの混合溶液
に、氷冷下水素化ホウ素テトラメチルアンモニウム5.
39g(60.6mmol) を少量ずつ加え、室温で
30分間攪拌した。続いて氷冷下、粗製の(R)−3−
オキソ−5−ヒドロキシヘプタン酸メチル6.20g(
35.6mmol) を滴下し、同温度で7時間攪拌し
た。反応混合物を重曹61gを含む水(100ml)に
滴下し酢酸エチル(100ml×4)で抽出した。抽出
液を飽和重曹水、水、飽和食塩水(各50ml) で順
次洗浄後、無水硫酸マグネシウム上で乾燥した。濾過、
溶媒留去し、粗製の(3S,5R)−3,5−ジヒドロ
キシヘプタン酸メチル4.40gを得た。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ1.0(t, 3H), 1.3-
1.8 (m, 2H), 2.6-2.8 (m, 2H
), 3.0(brs, 1H), 3.5(s, 2H
), 3.7(s, 3H), 3.8-4.2(m,
1H). Step 6 Add 5.0% tetramethylammonium borohydride to a mixed solution of 31ml of acetonitrile and 41.4ml of acetic acid under ice cooling.
39 g (60.6 mmol) was added little by little and stirred at room temperature for 30 minutes. Then, under ice cooling, crude (R)-3-
Methyl oxo-5-hydroxyheptanoate 6.20g (
35.6 mmol) was added dropwise and stirred at the same temperature for 7 hours. The reaction mixture was added dropwise to water (100 ml) containing 61 g of sodium bicarbonate, and extracted with ethyl acetate (100 ml x 4). The extract was washed successively with saturated aqueous sodium bicarbonate, water, and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. filtration,
The solvent was distilled off to obtain 4.40 g of crude methyl (3S,5R)-3,5-dihydroxyheptanoate.
【0053】本化合物は 1H NMRチャート解析に
より同定した。 1H NMR(CDCl3)のデータ
を下記に示す。
1H NMR:δ0.9(t, 3H), 1.3−
1.9(m, 4H), 2.3−2.7(m, 2H
),3.4−4.0(m, 1H), 3.7(s,
3H), 4.1−4.6(m, 1H)。
工程7
粗製の(3S,5R)−3,5−ジヒドロキシヘプタン
酸メチル4.40g(25.0mmol)を塩化メチレ
ン30.5mlに溶解し、氷冷下2,2−ジメトキシプ
ロパン30.5ml(250mmol) 、PPTS
1.31g(5.2mmol) を加えて室温で4時間
攪拌した。反応混合物を食塩水(100ml)に注ぎ、
酢酸エチル(75ml×4)で抽出した。抽出液を水、
飽和食塩水(各50ml) で順次洗浄後、無水硫酸マ
グネシウム上で乾燥した。濾過、溶媒留去して得た残渣
を再び塩化メチレン10mlに溶解し、氷冷下2,2−
ジメトキシプロパン10ml(82.0mmol)、P
PTS 0.44g(1.8mmol) を加えて室温
で5時間攪拌した。反応混合物を飽和重曹水(50ml
) に注ぎ、塩化メチレン(75ml×4)で抽出した
。抽出液を水、飽和食塩水(各50ml)で順次洗浄後
、無水硫酸マグネシウム上で乾燥した。濾過、溶媒留去
し、粗製の(3S,5R)−3,5−O−イソプロピリ
デンヘプタン酸メチル5.69g を得た。蒸留により
精製し(3S,5R)−3,5−O−イソプロピリデン
ヘプタン酸メチル3.48g(16.1mmol) を
得た。工程4で得られた(R)−3−オキソ−5−テト
ラヒドロピラニルオキシヘプタン酸メチルからの通算収
率は44%であった。This compound was identified by 1H NMR chart analysis. 1H NMR (CDCl3) data is shown below. 1H NMR: δ0.9(t, 3H), 1.3-
1.9 (m, 4H), 2.3-2.7 (m, 2H
), 3.4-4.0 (m, 1H), 3.7 (s,
3H), 4.1-4.6 (m, 1H). Step 7 4.40 g (25.0 mmol) of crude methyl (3S,5R)-3,5-dihydroxyheptanoate was dissolved in 30.5 ml of methylene chloride, and 30.5 ml (250 mmol) of 2,2-dimethoxypropane was dissolved under ice cooling. ), PPTS
1.31 g (5.2 mmol) was added and stirred at room temperature for 4 hours. The reaction mixture was poured into brine (100ml),
Extracted with ethyl acetate (75 ml x 4). Add the extract to water,
After washing successively with saturated brine (50 ml each), it was dried over anhydrous magnesium sulfate. The residue obtained by filtration and solvent distillation was dissolved again in 10 ml of methylene chloride, and 2,2-
Dimethoxypropane 10ml (82.0mmol), P
0.44 g (1.8 mmol) of PTS was added and stirred at room temperature for 5 hours. The reaction mixture was diluted with saturated sodium bicarbonate solution (50 ml).
) and extracted with methylene chloride (75 ml x 4). The extract was washed successively with water and saturated brine (50 ml each), and then dried over anhydrous magnesium sulfate. Filtration and distillation of the solvent gave 5.69 g of crude methyl (3S,5R)-3,5-O-isopropylideneheptanoate. It was purified by distillation to obtain 3.48 g (16.1 mmol) of methyl (3S,5R)-3,5-O-isopropylideneheptanoate. The total yield from methyl (R)-3-oxo-5-tetrahydropyranyloxyheptanoate obtained in Step 4 was 44%.
【0054】キャピラリーガスクロマトグラフィーによ
る分析の結果、このものは(3S,5R)−体と(3R
,5R)−体との約9:1混合物であった。本化合物は
1HNMRチャート解析により同定した。 1HNM
R(CDCl3)のデータを下記に示す。
1HNMR:δ0.9(t, 3H), 1.2−2
.0(m,4H), 1.3(s, 3H), 1.4
(s, 3H),2.5(dd, 1H), 2.5(
dd, 1H), 3.7(s, 3H), 3.7(
quint, 1H), 4.2(quint, 1H
)又、物性値は以下の通りであった。As a result of analysis by capillary gas chromatography, this compound has a (3S,5R)-isomer and a (3R
, 5R)-isomer at a ratio of about 9:1. This compound was identified by 1H NMR chart analysis. 1HNM
The data for R(CDCl3) is shown below. 1HNMR: δ0.9(t, 3H), 1.2-2
.. 0 (m, 4H), 1.3 (s, 3H), 1.4
(s, 3H), 2.5(dd, 1H), 2.5(
dd, 1H), 3.7(s, 3H), 3.7(
quint, 1H), 4.2(quint, 1H
) Also, the physical property values were as follows.
【0055】沸点:82℃/2mmHg比旋光度:−3
3.3°(cl.106, CHCl3)。Boiling point: 82°C/2mmHg Specific rotation: -3
3.3° (cl.106, CHCl3).
Claims (2)
れる光学活性3,5−アンチ−ジヒドロキシカルボン酸
エステル。1. An optically active 3,5-anti-dihydroxycarboxylic acid ester represented by the general formula: [Formula 1] (wherein R1 and R2 represent an alkyl group).
れる光学活性3,5−アンチ−O−イソプロピリデンカ
ルボン酸エステル。2. An optically active 3,5-anti-O-isopropylidenecarboxylic acid ester represented by the general formula [Formula 2] (wherein R1 and R2 represent an alkyl group).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2037891A JP2958665B2 (en) | 1991-01-22 | 1991-01-22 | Optically active 3,5-anti-dihydroxycarboxylic acid ester derivative |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2037891A JP2958665B2 (en) | 1991-01-22 | 1991-01-22 | Optically active 3,5-anti-dihydroxycarboxylic acid ester derivative |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04316537A true JPH04316537A (en) | 1992-11-06 |
| JP2958665B2 JP2958665B2 (en) | 1999-10-06 |
Family
ID=12025386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2037891A Expired - Lifetime JP2958665B2 (en) | 1991-01-22 | 1991-01-22 | Optically active 3,5-anti-dihydroxycarboxylic acid ester derivative |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2958665B2 (en) |
-
1991
- 1991-01-22 JP JP2037891A patent/JP2958665B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2958665B2 (en) | 1999-10-06 |
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