JP7076090B2 - 新規有機ゲルマニウム化合物及びこれを含む鎮痛剤 - Google Patents
新規有機ゲルマニウム化合物及びこれを含む鎮痛剤 Download PDFInfo
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- JP7076090B2 JP7076090B2 JP2017242584A JP2017242584A JP7076090B2 JP 7076090 B2 JP7076090 B2 JP 7076090B2 JP 2017242584 A JP2017242584 A JP 2017242584A JP 2017242584 A JP2017242584 A JP 2017242584A JP 7076090 B2 JP7076090 B2 JP 7076090B2
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- compound
- alkyl
- polymer
- polycyclic
- haloalkoxy
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- 239000000730 antalgic agent Substances 0.000 title claims 2
- 125000000082 organogermanium group Chemical group 0.000 title description 3
- 229940035676 analgesics Drugs 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims description 65
- 125000002950 monocyclic group Chemical group 0.000 claims description 22
- 125000003367 polycyclic group Chemical group 0.000 claims description 22
- 229920006395 saturated elastomer Polymers 0.000 claims description 20
- 229920000642 polymer Polymers 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 17
- 125000004432 carbon atom Chemical group C* 0.000 claims description 16
- 125000003545 alkoxy group Chemical group 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- -1 nitro, hydroxy Chemical group 0.000 claims description 14
- 125000000304 alkynyl group Chemical group 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 125000004429 atom Chemical group 0.000 claims description 12
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- 125000004438 haloalkoxy group Chemical group 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 125000004768 (C1-C4) alkylsulfinyl group Chemical group 0.000 claims description 8
- 125000004767 (C1-C4) haloalkoxy group Chemical group 0.000 claims description 8
- 125000004414 alkyl thio group Chemical group 0.000 claims description 8
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 125000004769 (C1-C4) alkylsulfonyl group Chemical group 0.000 claims description 7
- 125000004765 (C1-C4) haloalkyl group Chemical group 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 125000005907 alkyl ester group Chemical group 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 239000004480 active ingredient Substances 0.000 claims description 4
- 125000000623 heterocyclic group Chemical group 0.000 claims description 4
- 125000004043 oxo group Chemical group O=* 0.000 claims description 4
- 125000005843 halogen group Chemical group 0.000 claims description 3
- OIRDTQYFTABQOQ-KQYNXXCUSA-N adenosine Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O OIRDTQYFTABQOQ-KQYNXXCUSA-N 0.000 description 14
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- 125000003118 aryl group Chemical group 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- XEABSBMNTNXEJM-UHFFFAOYSA-N propagermanium Chemical compound OC(=O)CC[Ge](=O)O[Ge](=O)CCC(O)=O XEABSBMNTNXEJM-UHFFFAOYSA-N 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
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- SSYDTHANSGMJTP-ZXZARUISSA-N (3s,4r)-oxolane-3,4-diol Chemical compound O[C@H]1COC[C@H]1O SSYDTHANSGMJTP-ZXZARUISSA-N 0.000 description 4
- GSTMNOWYTIKRBG-UHFFFAOYSA-N OC(C(CCC1)C1[Ge](O)(O)O)=O Chemical compound OC(C(CCC1)C1[Ge](O)(O)O)=O GSTMNOWYTIKRBG-UHFFFAOYSA-N 0.000 description 4
- 230000009918 complex formation Effects 0.000 description 4
- MUDDKLJPADVVKF-UHFFFAOYSA-N trichlorogermane Chemical compound Cl[GeH](Cl)Cl MUDDKLJPADVVKF-UHFFFAOYSA-N 0.000 description 4
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- WHQUHTXULUACFD-KRWDZBQOSA-N (3s)-4-[[2-(4-fluoro-3-methylphenyl)-4-methyl-6-propan-2-ylphenyl]methoxy-hydroxyphosphoryl]-3-hydroxybutanoic acid Chemical compound CC(C)C1=CC(C)=CC(C=2C=C(C)C(F)=CC=2)=C1COP(O)(=O)C[C@@H](O)CC(O)=O WHQUHTXULUACFD-KRWDZBQOSA-N 0.000 description 3
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229940126142 compound 16 Drugs 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
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- 238000006911 enzymatic reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 125000001188 haloalkyl group Chemical group 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
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- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- MUTCAPXLKRYEPR-ITWZMISCSA-N methyl (e,3r,5s)-7-[4-bromo-2,3-bis(4-fluorophenyl)-5-propan-2-ylpyrrol-1-yl]-3,5-dihydroxyhept-6-enoate Chemical compound COC(=O)C[C@H](O)C[C@H](O)\C=C\N1C(C(C)C)=C(Br)C(C=2C=CC(F)=CC=2)=C1C1=CC=C(F)C=C1 MUTCAPXLKRYEPR-ITWZMISCSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 1
- SCNWTQPZTZMXBG-UHFFFAOYSA-N 2-methyloct-2-enoic acid Chemical compound CCCCCC=C(C)C(O)=O SCNWTQPZTZMXBG-UHFFFAOYSA-N 0.000 description 1
- LDWITKGAZPUIOL-UHFFFAOYSA-N 2-trichlorogermylcyclohexane-1-carboxylic acid Chemical compound C1CCC(C(C1)C(=O)O)[Ge](Cl)(Cl)Cl LDWITKGAZPUIOL-UHFFFAOYSA-N 0.000 description 1
- VRUOMQPRUQOPON-UHFFFAOYSA-N 2-trichlorogermylcyclopentane-1-carboxylic acid Chemical compound C1CC(C(C1)[Ge](Cl)(Cl)Cl)C(=O)O VRUOMQPRUQOPON-UHFFFAOYSA-N 0.000 description 1
- JNBNHESIBOINSU-UHFFFAOYSA-N 3-germylpropanoic acid Chemical compound OC(=O)CC[GeH3] JNBNHESIBOINSU-UHFFFAOYSA-N 0.000 description 1
- 239000004475 Arginine Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NMEZJSDUZQOPFE-UHFFFAOYSA-N Cyclohex-1-enecarboxylic acid Chemical compound OC(=O)C1=CCCCC1 NMEZJSDUZQOPFE-UHFFFAOYSA-N 0.000 description 1
- BWLUMTFWVZZZND-UHFFFAOYSA-N Dibenzylamine Chemical compound C=1C=CC=CC=1CNCC1=CC=CC=C1 BWLUMTFWVZZZND-UHFFFAOYSA-N 0.000 description 1
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- KGPGFQWBCSZGEL-ZDUSSCGKSA-N GSK690693 Chemical compound C=12N(CC)C(C=3C(=NON=3)N)=NC2=C(C#CC(C)(C)O)N=CC=1OC[C@H]1CCCNC1 KGPGFQWBCSZGEL-ZDUSSCGKSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 description 1
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 description 1
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- BWFPKDMXOJQUPG-UHFFFAOYSA-N OC(C(CCCC1)C1[Ge](O)(O)O)=O Chemical compound OC(C(CCCC1)C1[Ge](O)(O)O)=O BWFPKDMXOJQUPG-UHFFFAOYSA-N 0.000 description 1
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- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
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- 230000000259 anti-tumor effect Effects 0.000 description 1
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- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
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- 125000004122 cyclic group Chemical group 0.000 description 1
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- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001162 cycloheptenyl group Chemical group C1(=CCCCCC1)* 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
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- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 1
- 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 1
- 125000000522 cyclooctenyl group Chemical group C1(=CCCCCCC1)* 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- NLUNLVTVUDIHFE-UHFFFAOYSA-N cyclooctylcyclooctane Chemical group C1CCCCCCC1C1CCCCCCC1 NLUNLVTVUDIHFE-UHFFFAOYSA-N 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 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
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- 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
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- 125000001544 thienyl group Chemical group 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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Description
R1及びR2は、それらが結合している2個の炭素原子と共に、4~10員の単環式若しくは多環式の飽和環、4~10員の単環式若しくは多環式の部分飽和環、6~10員の単環式若しくは多環式の芳香環、又は5~10員の単環式若しくは多環式の窒素、酸素及び硫黄から選択される1~4個の原子を含有するヘテロ環を形成し、
これらの環は、置換されていないか、又はハロゲン、ニトロ、ヒドロキシ、シアノ、オキソ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル及びC1-4アルキルスルホニルよりなる群からの1若しくは複数の残基により置換されており、
R3は、水素、ハロゲン、ニトロ、ヒドロキシ、シアノ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル又はC1-4アルキルスルホニルである、前記化合物若しくはその塩若しくはエステル又はこれらの重合体。
(2) R1及びR2が、それらが結合している2個の炭素原子と共に、4~7員の単環式飽和環又は6~10員の多環式飽和環を形成し、前記飽和環は置換されておらず、R3が、水素又はC1-4アルキルである、(1)に記載の化合物若しくはその塩若しくはエステル又はこれらの重合体。
(3) R1及びR2が、
(4) (1)から(3)のいずれか一項に記載の化合物若しくはその塩若しくはエステル又はこれらの重合体を有効成分として含有する、鎮痛剤。
R1及びR2は、それらが結合している2個の炭素原子と共に、4~10員の単環式若しくは多環式の飽和環、4~10員の単環式若しくは多環式の部分飽和環、6~10員の単環式若しくは多環式の芳香環、又は5~10員の単環式若しくは多環式の窒素、酸素及び硫黄よりなる群から選択される1~4個の原子を含有するヘテロ環を形成し、
これらの環は、置換されていないか、又はハロゲン、ニトロ、ヒドロキシ、シアノ、オキソ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル及びC1-4アルキルスルホニルよりなる群からの1若しくは複数の残基により置換されており、
R3は、水素、ハロゲン、ニトロ、ヒドロキシ、シアノ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル又はC1-4アルキルスルホニルである、前記化合物若しくはその塩若しくはエステル又はこれらの重合体に関する。
(1) 2-Trichlorogermyl cyclohexanecarboxylic acid(化合物3g)及び2-Trihydroxygermyl cyclohexanecarboxylic acid(化合物16g)の合成
得られた 3g(306 mg, 1 mmol)を水(5 ml)に溶解し pH 7.0 付近になるよう水酸化ナトリウム水溶液(40wt%)を用いて中和することにより、目的の化合物16g を得た。
得られた 3h(292 mg, 1 mmol)を水(5 ml)に溶解し pH 7.0 付近になるよう水酸化ナトリウム水溶液(40wt%)を用いて中和することにより、目的の化合物16h を得た。
上記で得られた bicycle[2.2.2]oct-2-ene-2-carboxylic acid(2.98 g, 9 mmol)を30 ml ナス型フラスコに秤量し、容器内を減圧乾燥した。その容器に conc. HCl(3.5 ml)を添加した後、氷冷下で conc. HCl に溶解したトリクロロゲルマン(0.93 ml, 10 mmol)をゆっくり滴下し、室温で12 時間撹拌した。反応後、析出する固体を吸引ろ過し、残渣を conc. HCl で 3 回洗浄することにより、白色結晶として化合物3j(655 mg, 22%)を得た。
得られた化合物3j(292 mg, 1 mmol)を水(5 ml)に溶解し pH 7.0 付近になるよう水酸化ナトリウム水溶液(40wt%)を用いて中和することにより、目的の化合物16j を得た。
実施例1で調製した化合物3g、3h及び3jを各 1mmol づつバイアル管に秤量し、D2O(3 ml)に溶解した。その溶液に NaOD をpH 7 付近になるように滴下した後、D2O を全体の溶液量が 5 ml になるまで加え、重水素交換された化合物16g、16h 及び 16j を得た。
上記で得た溶液の濃度(0.2 mol/L)と同じ濃度のシス-ジオール化合物1,4-anhydroerythritol(0.2 mol/L)を反応させ、化合物16g、16h又は16jと1,4-anhydroerythritolとの錯体を形成させた。反応液の1H-NMR スペクトル解析を行い、1, 4-anhydroerythritolの水酸基に隣接したプロトンに由来するシグナルの面積を用いて、以下の式により錯体形成能を算出した。
錯体形成能(%)=錯体における当該シグナルの面積/(錯体における当該シグナルの面積+1,4-anhydroerythritolにおける当該シグナルの面積)×100
以下のリン酸 buffer 溶液(pH7.5)を調製した:アデノシン(50μM)、THGP又はその誘導体(化合物16g又は16 h)(50 mM)及びADA(0.1 U/ml)。次に、アデノシン溶液(280μL)、THGP又はその誘導体の溶液(280μL)及びADA 溶液(40μL)をプラスチックセルに入れ、混合後、紫外分光光度計を用いて265 nm における吸光度を測定し(測定時間60 秒、温度25℃)、アデノシン濃度の時間変化からADA反応速度を算出した。Tukey-Kramer法を用いて、群間の多重比較検定を行った。
Claims (4)
- 一般式(I)
R1及びR2は、それらが結合している2個の炭素原子と共に、4~10員の単環式若しくは多環式の飽和環、4~10員の単環式若しくは多環式の部分飽和環、又は5~10員の単環式若しくは多環式の窒素、酸素及び硫黄から選択される1~4個の原子を含有する飽和若しくは部分不飽和のヘテロ環を形成し、
これらの環は、置換されていないか、又はハロゲン、ニトロ、ヒドロキシ、シアノ、オキソ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル及びC1-4アルキルスルホニルよりなる群からの1若しくは複数の残基により置換されており、
R3は、水素、ハロゲン、ニトロ、ヒドロキシ、シアノ、C1-4アルキル、C1-4ハロアルキル、C2-4アルケニル、C2-4ハロアルケニル、C3-4アルキニル、C3-4ハロアルキニル、C1-4アルコキシ、C1-4ハロアルコキシ、C1-4アルキルチオ、C1-4アルキルスルフィニル又はC1-4アルキルスルホニルである、前記化合物若しくはその塩若しくはそのC 1-4 アルキルエステル又はこれらの重合体。 - R1及びR2が、それらが結合している2個の炭素原子と共に、4~7員の単環式飽和環又は6~10員の多環式飽和環を形成し、前記飽和環は置換されておらず、R3が、水素又はC1-4アルキルである、請求項1に記載の化合物若しくはその塩若しくはそのC 1-4 アルキルエステル又はこれらの重合体。
- 請求項1から3のいずれか一項に記載の化合物若しくはその塩若しくはそのC 1-4 アルキルエステル又はこれらの重合体を有効成分として含有する、鎮痛剤。
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