JPWO2016208481A1 - 新規白金(iv)錯体 - Google Patents
新規白金(iv)錯体 Download PDFInfo
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- NDBYXKQCPYUOMI-UHFFFAOYSA-N platinum(4+) Chemical compound [Pt+4] NDBYXKQCPYUOMI-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 125000005843 halogen group Chemical group 0.000 claims abstract description 18
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-L Malonate Chemical compound [O-]C(=O)CC([O-])=O OFOBLEOULBTSOW-UHFFFAOYSA-L 0.000 claims abstract description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000003446 ligand Substances 0.000 claims description 14
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 6
- SSJXIUAHEKJCMH-UHFFFAOYSA-N cyclohexane-1,2-diamine Chemical compound NC1CCCCC1N SSJXIUAHEKJCMH-UHFFFAOYSA-N 0.000 claims description 4
- SSJXIUAHEKJCMH-PHDIDXHHSA-N (1r,2r)-cyclohexane-1,2-diamine Chemical compound N[C@@H]1CCCC[C@H]1N SSJXIUAHEKJCMH-PHDIDXHHSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 230000000259 anti-tumor effect Effects 0.000 abstract description 8
- 239000003814 drug Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 description 45
- 230000000052 comparative effect Effects 0.000 description 20
- 239000007787 solid Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 14
- 239000012153 distilled water Substances 0.000 description 11
- 238000004128 high performance liquid chromatography Methods 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000005160 1H NMR spectroscopy Methods 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 101100498160 Mus musculus Dach1 gene Proteins 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-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
- JRNVZBWKYDBUCA-UHFFFAOYSA-N N-chlorosuccinimide Chemical compound ClN1C(=O)CCC1=O JRNVZBWKYDBUCA-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002504 physiological saline solution Substances 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 206010061902 Pancreatic neoplasm Diseases 0.000 description 5
- 208000005718 Stomach Neoplasms Diseases 0.000 description 5
- 238000002835 absorbance Methods 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 206010017758 gastric cancer Diseases 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 208000015486 malignant pancreatic neoplasm Diseases 0.000 description 5
- 201000002528 pancreatic cancer Diseases 0.000 description 5
- 208000008443 pancreatic carcinoma Diseases 0.000 description 5
- HRGDZIGMBDGFTC-UHFFFAOYSA-N platinum(2+) Chemical compound [Pt+2] HRGDZIGMBDGFTC-UHFFFAOYSA-N 0.000 description 5
- 201000011549 stomach cancer Diseases 0.000 description 5
- 230000010261 cell growth Effects 0.000 description 4
- DQLATGHUWYMOKM-UHFFFAOYSA-L cisplatin Chemical compound N[Pt](N)(Cl)Cl DQLATGHUWYMOKM-UHFFFAOYSA-L 0.000 description 4
- 229960004316 cisplatin Drugs 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229960001756 oxaliplatin Drugs 0.000 description 4
- DWAFYCQODLXJNR-BNTLRKBRSA-L oxaliplatin Chemical compound O1C(=O)C(=O)O[Pt]11N[C@@H]2CCCC[C@H]2N1 DWAFYCQODLXJNR-BNTLRKBRSA-L 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000002246 antineoplastic agent Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 238000013112 stability test Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 2
- XMIIGOLPHOKFCH-UHFFFAOYSA-N 3-phenylpropionic acid Chemical compound OC(=O)CCC1=CC=CC=C1 XMIIGOLPHOKFCH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000001093 anti-cancer Effects 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229960000907 methylthioninium chloride Drugs 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000012192 staining solution Substances 0.000 description 2
- -1 that is Chemical compound 0.000 description 2
- 125000006720 (C1-C6) alkyl (C6-C10) aryl group Chemical group 0.000 description 1
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
- BDNKZNFMNDZQMI-UHFFFAOYSA-N 1,3-diisopropylcarbodiimide Chemical compound CC(C)N=C=NC(C)C BDNKZNFMNDZQMI-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010009944 Colon cancer Diseases 0.000 description 1
- 208000001333 Colorectal Neoplasms Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001412 amines Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000007894 caplet Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- CCQPAEQGAVNNIA-UHFFFAOYSA-N cyclobutane-1,1-dicarboxylic acid Chemical compound OC(=O)C1(C(O)=O)CCC1 CCQPAEQGAVNNIA-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- BGRWYRAHAFMIBJ-UHFFFAOYSA-N diisopropylcarbodiimide Natural products CC(C)NC(=O)NC(C)C BGRWYRAHAFMIBJ-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000007884 disintegrant Substances 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 238000000132 electrospray ionisation Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000005918 in vitro anti-tumor Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 229950010897 iproplatin Drugs 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006166 lysate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- PSHKMPUSSFXUIA-UHFFFAOYSA-N n,n-dimethylpyridin-2-amine Chemical compound CN(C)C1=CC=CC=N1 PSHKMPUSSFXUIA-UHFFFAOYSA-N 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 208000033808 peripheral neuropathy Diseases 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 230000004526 pharmaceutical effect Effects 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 229960005399 satraplatin Drugs 0.000 description 1
- 190014017285 satraplatin Chemical compound 0.000 description 1
- ROBLTDOHDSGGDT-UHFFFAOYSA-M sodium;pentane-1-sulfonate Chemical compound [Na+].CCCCCS([O-])(=O)=O ROBLTDOHDSGGDT-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000005415 substituted alkoxy group Chemical group 0.000 description 1
- 239000000829 suppository Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000007910 systemic administration Methods 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0086—Platinum compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0086—Platinum compounds
- C07F15/0093—Platinum compounds without a metal-carbon linkage
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/28—Compounds containing heavy metals
- A61K31/282—Platinum compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/65—Metal complexes of amines
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
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- Animal Behavior & Ethology (AREA)
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- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
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Abstract
Description
で表される白金(IV)錯体。
本発明の実施例では以下の略号を使用する。
ox:オキサレート
cbdc:1,1−シクロブタンジカルボキシレート
l−OHP:オキサリプラチン
移動相(B)濃度:15%(0min)−15%(20min)、
移動相流速1ml/min、検出210nm。
移動相(B)濃度:15%(0min)−90%(10min)、
移動相流速1ml/min、検出210nm。
N−クロロスクシンイミド(66.8mg)を蒸留水14mlに溶解し、l−OHP(200mg)を蒸留水6mlに懸濁した液を加え、遮光下、室温にて4時間撹拌した。反応終了後、反応液中の不溶物をろ別し、ろ液を減圧濃縮することにより固体を得た。得られた固体を、エタノール/水で再結晶することで標記化合物(114mg)を得た。1H−NMR(D2O):δ2.89−2.72(2H、m)、2.15(2H、d、J=12.2Hz)、1.53−1.41(4H、m)、0.97−0.90(2H、m)、MS(ESI;Electrospray Ionization):450(M+1)、451(M+2)、純度(HPLC、分析条件2):99.4%。
N−ブロモスクシンイミド(89.6mg)を蒸留水14mlに溶解し、l−OHP(200mg)を蒸留水6mlに懸濁した液を加え、遮光下、室温にて3時間撹拌した。反応終了後、反応液中の不溶物をろ別し、ろ液を減圧濃縮することにより固体を得た。得られた固体を、水で懸濁させ、再度、ろ取することで標記化合物(216mg)を得た。1H−NMR(DMSO−d6):δ7.91−7.65(2H、m)、7.14−7.03(2H、m)、2.65−2.55(2H、m)、2.07−1.94(2H、m)、1.50−1.46(4H、m)、1.15−1.02(2H、m)、MS(ESI):495(M+1)、純度(HPLC、分析条件2):98.9%。
N−クロロスクシンイミド(105.4mg)を蒸留水7mlに溶解し、Pt(R,R−dach)Cl2(300mg)をテトラヒドロフラン60mlに懸濁した液に加え、遮光下、室温にて4時間撹拌した。反応終了後、反応液中の不溶物をろ別し、ろ液を減圧濃縮することにより固体を得た。得られた固体を、エタノールに懸濁させ、再度、ろ取することで標記化合物(322mg)を得た。1H−NMR(DMSO−d6):δ7.53−7.29(2H、m)、6.89−6.78(2H、m)、2.75−2.60(2H、m)、2.10−2.00(2H、m)、1.47(2H、d、J=8.0Hz)、1.10−0.93(2H、m)、MS(ESI):433(M+1)、純度(HPLC、分析条件2):98.1%。
l−OHP(200mg)を酢酸9mlに懸濁した液に、30%過酸化水素水0.135mlを加え、遮光下、室温にて19時間撹拌した。反応終了後、水を加えながら数回減圧濃縮し、固体を得た。得られた固体を、エタノール/メタノールで再結晶することで標記化合物(55mg)を得た。1H−NMR(D2O):δ2.78−2.73(2H、m)、2.17(2H、d、J=9.2Hz)、1.94(3H、s)、1.54−1.44(4H、m)、1.20−1.05(2H、m)、純度(HPLC、分析条件1):94.0%。
l−OHP(200mg)をエチレングリコール2mlに懸濁した液に、N−クロロスクシンイミド(66.8mg)を加え、遮光下、室温にて3時間撹拌した。反応終了後、反応液にアセトン10mlおよびジエチルエーテル30mlを加え、析出した固体をろ取した。得られた固体を、エタノール/水で再結晶することで標記化合物(154mg)を得た。1H−NMR(D2O):δ3.58−3.45(2H、m)、3.22−3.08(2H、m)、2.85−2.83(2H、m)、2.14(2H,d、J=11.2Hz)、1.53−1.44(4H、m)、1.15−1.07(2H、m)、純度(HPLC、分析条件1):98.0%。
l−OHP(900mg)を蒸留水12mlに懸濁した液に、30%過酸化水素水2.58mlを加え、遮光下、室温にて20.5時間撹拌した。反応終了後、水を加えながら数回減圧濃縮し、固体を得た。得られた固体を、蒸留水で再結晶することで標記化合物(422mg)を得た。1H−NMR(D2O):δ2.74−2.72(2H、m)、2.17(2H、d、J=12.8Hz)、1.54−1.45(4H、m)、1.18−1.12(2H、m)、純度(HPLC、分析条件1):>98.0%。
3−フェニルプロピオン酸(77mg)、N,N−ジメチルアミノピリジン(5.7mg)をN,N−ジメチルホルムアミド2mlに溶解し、ジイソプロピルカルボジイミド0.086mlを加えた後、室温で0.5時間撹拌した。反応液に、比較例3で得られたtrans,cis,cis−[Pt(OH)2(R,R−dach)(ox)](200mg)をN,N−ジメチルホルムアミド2mlに懸濁させた液を加え、遮光下、室温で23時間撹拌した。反応液をろ過することで未反応の白金錯体を除き、得られたろ液に水を加えることで、固体を析出させた。固体をろ取し、冷やしたエタノールで洗うことで、標記化合物(38mg)を得た。1H−NMR(DMSO−d6):δ8.30(4H、brs)、7.27−7.14(10H、m)、2.80−2.76(4H、m)、2.60−2.56(4H,m)、2.40−2.30(2H、m)、2.05(2H,d,J=12.4Hz)、1.47(2H,d,J=8.0Hz)、1.40−1.22(2H,m)、1.15−1.14(2H,m)、純度(HPLC、分析条件2):98.0%。
非特許文献3に記載の方法に従い標記化合物を合成した。1H−NMR(DMSO−d6):δ7.71−7.43(2H,m)、7.00−6.90(2H,m)、2.60−2.29(6H,m)、2.03−1.93(2H,m)、1.84−1.49(2H,m)、1.50−1.30(4H、m)、1.05−0.95(2H,m)、MS(ESI):504(M+1)、486(M−OH)、純度(HPLC、分析条件2):95.6%。
非特許文献3に記載の方法に従い合成したcis,cis−[Pt(R,R−dach)(cbdc)](100mg)を50%アセトン溶液14mlに溶解させ、30%過酸化水素水14mlを加え、遮光下、室温で4時間撹拌した。反応終了後、水を加えながら数回減圧濃縮し、固体を得た。得られた固体を、アセトンで懸濁精製することで標記化合物(41mg)を得た。1H−NMR(D2O):2.97(2H、d、J=10.0Hz)、2.77−2.72(4H,m)、2.36−2.32(2H,m)、2.14−2.10(2H,m)、1.74−1.64(4H、m)、1.37−1.34(2H、m)、MS(ESI):486(M+1)、486(M−OH)、純度(HPLC、分析条件2):96.8%。
胃がんおよび膵がん細胞株をそれぞれ96穴プレートに播種した。胃がん細胞KATOIIIは1×104細胞/wellで、胃がん細胞MKN−1は5×105細胞/wellで、胃がん細胞MKN−45は1×104細胞/wellで、胃がん細胞MKN−74は1×104細胞/wellで、膵がん細胞AsPC−1は5×105細胞/wellで、膵がん細胞BxPC−3は5×105細胞/wellで、膵がん細胞DAN−Gは5×105細胞/wellで、膵がん細胞SUIT−2は5×105細胞/wellでそれぞれ播種した。24時間培養後、各実施例化合物または各比較例化合物を最終濃度0.0244μmol/Lから100μmol/Lまで公比4で添加した。テクニカルリプリケートは3点とした。対照として薬剤を添加しないwellと、ブランクとして細胞および薬剤を添加しないwellを設けた。72時間培養後、培養液を除去し、メタノールで細胞を固定した後、メチレンブルー染色液を用いて細胞を染色した。過剰なメチレンブルー染色液を洗浄後、各wellに0.1%塩酸を200μL添加し、色素を抽出した。マイクロプレートリーダーを用いて660nmの吸光度を測定し、得られた吸光度から細胞増殖阻害活性(GI%)を以下の式で算出した。
GIXY%=(1−(AXY−B)/(C−B))×100
ここで、GIXY%は化合物Xの濃度がYμMの時の細胞増殖阻害活性、AXYは化合物XをYμM加えたwellの平均吸光度、Bはブランクwellの吸光度、Cは対照wellの吸光度を示す。
各化合物濃度についてGIXY%を求め、濃度と細胞増殖阻害活性から増殖阻害曲線を作図し、細胞増殖阻害活性が50%となる濃度を化合物XのIC50値とした。その結果を表1、2および3に示す。
実施例1化合物および比較例5化合物を量りとり、それぞれに蒸留水を徐々に加え、結晶が完全に溶解する濃度を測定した。その結果を表4に示す。なお、l−OHPの溶解度は文献値から算出した参考値である。
実施例1化合物および比較例5化合物を容器に量りとり、蒸留水を用いて1mg/mlとなるように溶解した。それぞれの水溶液を0.45μmのシリンジフィルターを用いてろ過し、遮光下、37℃の水浴中で振とうさせ、経時的にサンプリングを行い、液体高速クロマトグラフィーにより安定性を試験した。その結果を図1に示す。
実施例1化合物を容器に量りとり、生理食塩水を用いて1mg/mlとなるように溶解した。溶解液を遮光下5℃で静置または遮光せず37℃の水浴中で振とうし残存量を高速液体クロマトグラフィーにより定量し、残存率を表5に示す。
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