JP5850321B2 - 神経選択的転写抑制因子NRSFに特異的に結合するmSin3Bに結合する化合物の利用 - Google Patents
神経選択的転写抑制因子NRSFに特異的に結合するmSin3Bに結合する化合物の利用 Download PDFInfo
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- JP5850321B2 JP5850321B2 JP2011553856A JP2011553856A JP5850321B2 JP 5850321 B2 JP5850321 B2 JP 5850321B2 JP 2011553856 A JP2011553856 A JP 2011553856A JP 2011553856 A JP2011553856 A JP 2011553856A JP 5850321 B2 JP5850321 B2 JP 5850321B2
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- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 125000000404 glutamine group Chemical group N[C@@H](CCC(N)=O)C(=O)* 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
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- 229940125396 insulin Drugs 0.000 description 1
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- 238000007912 intraperitoneal administration Methods 0.000 description 1
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- 239000008101 lactose Substances 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 230000002438 mitochondrial effect Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- ZEZAYWWNUIDHGR-UHFFFAOYSA-N n,n-di(butan-2-yl)-3-methyl-4-nitrobenzamide Chemical compound CCC(C)N(C(C)CC)C(=O)C1=CC=C([N+]([O-])=O)C(C)=C1 ZEZAYWWNUIDHGR-UHFFFAOYSA-N 0.000 description 1
- OEYJCVXWZLCGOO-UHFFFAOYSA-N n,n-dibenzyl-3-methyl-4-nitrobenzamide Chemical compound C1=C([N+]([O-])=O)C(C)=CC(C(=O)N(CC=2C=CC=CC=2)CC=2C=CC=CC=2)=C1 OEYJCVXWZLCGOO-UHFFFAOYSA-N 0.000 description 1
- DZGWDTGQPGOIMJ-UHFFFAOYSA-N n,n-diethyl-3-methyl-4-nitrobenzamide Chemical compound CCN(CC)C(=O)C1=CC=C([N+]([O-])=O)C(C)=C1 DZGWDTGQPGOIMJ-UHFFFAOYSA-N 0.000 description 1
- OBYVIBDTOCAXSN-UHFFFAOYSA-N n-butan-2-ylbutan-2-amine Chemical compound CCC(C)NC(C)CC OBYVIBDTOCAXSN-UHFFFAOYSA-N 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 210000002682 neurofibrillary tangle Anatomy 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000002248 primary sensory neuron Anatomy 0.000 description 1
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- 206010037844 rash Diseases 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000022532 regulation of transcription, DNA-dependent Effects 0.000 description 1
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- 210000003497 sciatic nerve Anatomy 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000000528 statistical test Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
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- 230000009885 systemic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/10—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms
- C07D211/16—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with acylated ring nitrogen atom
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/445—Non condensed piperidines, e.g. piperocaine
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/64—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings
- C07C233/65—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
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- C07C233/66—Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by halogen atoms or by nitro or nitroso groups
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- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/04—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D207/06—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with radicals, containing only hydrogen and carbon atoms, attached to ring carbon atoms
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- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/10—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
- C07D211/10—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms
- C07D211/14—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with hydrocarbon or substituted hydrocarbon radicals attached to the ring nitrogen atom
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- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/92—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with a hetero atom directly attached to the ring nitrogen atom
- C07D211/96—Sulfur atom
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- C07D223/02—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D223/04—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings with only hydrogen atoms, halogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
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- C07D265/28—1,4-Oxazines; Hydrogenated 1,4-oxazines
- C07D265/30—1,4-Oxazines; Hydrogenated 1,4-oxazines not condensed with other rings
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- C07D295/16—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms
- C07D295/18—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms by radicals derived from carboxylic acids, or sulfur or nitrogen analogues thereof
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- C07C2601/14—The ring being saturated
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Description
例えば、神経の遺伝子は、神経細胞において正しく発現されなければならず、非神経細胞では発現が起こってはならない。NRSE/RE1(neural restrictive silencer element/repressor element 1)は21塩基対からなり、神経特異的遺伝子の近傍に存在し、神経伝達物質合成酵素、イオンチャネル、神経突起伸長関連分子など、約30種類以上の遺伝子の神経細胞特異的な転写制御の中核を担っているサイレンサーである。またこのサイレンサーを持つ遺伝子は神経特異的遺伝子を中心に約1000種類あるといわれている。神経細胞では働かず、非神経細胞で神経特異的遺伝子の発現を抑えることで、神経細胞における神経特異的な遺伝子の発現を保障している。また、神経特異的遺伝子の発現制御に関与するだけでなく、神経細胞の最終分化にも関与していると考えられている。このNRSE/RE1に結合し、非神経細胞での神経特異的遺伝子の発現を抑える転写抑制因子として同定されたものが、神経選択的サイレンサー結合因子NRSF/RESTである。
最近、Uchidaらは、神経障害後の一次知覚神経において、転写抑制因子NRSF/RESTの発現が増加し、エピジェネティクス修飾(ヒストンアセチル化の低下)を介して疼痛関連遺伝子群(Nav1.8, MOP, TRPM8,TRPA1, Kv4.3)の発現をサイレンシングし、神経障害性疼痛の特徴であるC線維性知覚鈍麻とモルヒネ抵抗性を誘発することを明らかにした(非特許文献7、8、9及び10)。
(1)mSin3BのPAH1ドメインに結合できる物質を含む医薬組成物。
(2)mSin3BのPAH1ドメインに結合できる物質が下記の式(I)で表される化合物、その医薬的に許容される塩又はその医薬的に許容されるエステルである(1)記載の医薬組成物。
(3)神経選択的サイレンサー結合因子NRSF/RESTの発現異常又はNRSF/RESTがターゲットとする遺伝子の発現異常が関与する疾患の予防及び/又は治療剤として使用される(1)又は(2)記載の医薬組成物。
(4)神経選択的サイレンサー結合因子NRSF/RESTの発現異常又はNRSF/RESTがターゲットとする遺伝子の発現異常が関与する疾患が、神経変性疾患、癌、アトピー性皮膚炎、糖尿病、心筋症又は神経障害性疼痛である(3)記載の医薬組成物。
(5)神経変性疾患が、ダウン症、アルツハイマー病、ハンチントン病又はパーキンソン病である(4)記載の医薬組成物。
(6)癌が髄芽腫である(4)記載の医薬組成物。
(7)式(I)で表される化合物が下記のいずれかの式で表される(1)〜(6)のいずれかに記載の医薬組成物。
(9)神経選択的サイレンサー結合因子NRSF/RESTの発現異常又はNRSF/RESTがターゲットとする遺伝子の発現異常が関与する疾患の予防薬及び/又は治療薬を製造するための、mSin3BのPAH1ドメインに結合できる物質の使用。
(10)神経選択的サイレンサー結合因子NRSF/RESTの発現異常又はNRSF/RESTがターゲットとする遺伝子の発現異常が関与する疾患の予防及び/又は治療のための、mSin3BのPAH1ドメインに結合できる物質の使用。
(11)神経選択的サイレンサー結合因子NRSF/RESTの発現異常又はNRSF/RESTがターゲットとする遺伝子の発現異常が関与する疾患を予防及び/又は治療する方法に使用するための、mSin3BのPAH1ドメインに結合できる物質。
(12)下記の式(Ia)で表される化合物、その医薬的に許容される塩又はその医薬的に許容されるエステル。
(13)下記の式(Ia)で表される化合物が下記のいずれかの式で表される化合物である(8)記載の化合物、その医薬的に許容される塩又はその医薬的に許容されるエステル。
本明細書は、本願の優先権の基礎である日本国特許出願、特願2010‐27066の明細書および/または図面に記載される内容を包含する。
R1、R2、R4及びR5の炭化水素基としては、アルキル基(好ましくは、炭素数1から6の直鎖状または分枝状のアルキル基、より好ましくは、メチル基、エチル基、ノルマルプロピル基、イソプロピル基など)などを挙げることができるが、これらに限定されることはない。
1-[4-(ジフルオロメトキシ)フェニル]-2-(3,5-ジメチルピペリジル)エタン-1-オンは、Enamine(ウクライナ)から購入することができる。
No.5の化合物は、Vitas-M Laboratory, LTD.(ロシア)から購入することができる。
No.15の化合物は、Vitas-M Laboratory, LTD.(ロシア)から購入することができる。
No.23の化合物は、Enamine(ウクライナ)から購入することができる。
NCR-7は、後述の製造例21の方法で製造することができる。
また、式(I)で表される化合物は、下記の式(Ia)で表される化合物であってもよい。
3,5-ジメチル-1-(3-メチルベンゾイル)ピペリジン(NCR-1)の製造
3,5-ジメチルピペリジン(0.73g)とトリエチルアミン(2.25ml)をジクロロメタン(20ml)に溶解し、氷点下、3-メチルベンゾイルクロリド(1.00g)のジクロロメタン(10ml)溶液を滴下した。0℃で30分攪拌後、反応液を水(100ml)に注ぎ、クロロホルム(50ml)で抽出した。有機層を飽和食塩水(100ml)で洗浄して、無水硫酸ナトリウムで乾燥し、ろ過後、減圧濃縮した。残渣をシリカゲルフラッシュカラムクロマトグラフィー(展開溶媒 n-ヘキサン:酢酸エチル=4 :1)で精製し、表題化合物(NCR-1 シス体:トランス体=9:1)(0.95g, 収率63%)を無色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 0.76-1.86 (10H, m), 2.15-2.23 (0.9H, m), 2.36 (3H, s), 2.44-2.49 (0.9H, m), 3.08 (0.1H, m), 3.20 (0.1H, m), 3.32-3.34 (0.1H, m), 3.63-3.65 (0.9H, m), 7.14 (1H, d, J = 7.3 Hz), 7.19 (1H, d, J = 7.3 Hz), 7.20 (1H, s), 7.26 (1H, t, J = 7.6 Hz); MS (EI) m/z: 231 (M+).
3,5-ジメチル-1-(4-ニトロベンゾイル)ピペリジン(NCR-2)の製造
3-メチルベンゾイルクロリドの代わりに4-ニトロベンゾイルクロリドを用い、製造例1と同様の方法により表題化合物(NCR-2 シス体:トランス体=9:1)(収率92%)を得た。NCR-2の粗結晶1.31gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.78gを得た。
mp 120-125°C; 1H-NMR (CDCl3, 500MHz, δ; ppm) 0.77-1.71 (10H, m), 2.20-2.51 (0.9H, m), 2.51-2.56 (0.9H, m), 2.99 (0.1H, m), 3.22 (0.1H, m), 3.27-3.29 (0.1H, m), 3.42-3.45 (0.9H, m), 3.89-3.91 (0.1H, m), 4.66-4.68 (0.9H, m), 7.54 (2H, d, J = 8.7 Hz), 8.27 (2H, d, J = 8.7 Hz); MS (EI) m/z: 262 (M+); Anal. Calcd. for C14H18N2O3 : C, 64.10; H, 6.92; N, 10.68. Found: C, 65.51; H, 7.17; N, 10.97.
3-メチル-1-(4-ニトロベンゾイル)ピペリジン(NCR-4)の製造
3,5-ジメチルピペリジンの代わりに3-メチルピペリジンを、3-メチルベンゾイルクロリドの代わりに4-ニトロベンゾイルクロリドを用い、製造例1と同様の方法により表題化合物(NCR-4)(収率89%)を得た。NCR-4の粗結晶1.19gをn-ヘキサン-クロロホルムより再結晶し、褐色結晶0.83gを得た。
mp 70.2 -71.3°C; 1H-NMR (CDCl3, 500MHz, δ; ppm) 0.79 (1.5H, d, J = 6.5 Hz), 0.97 (1.5H, d, J = 6.5 Hz), 1.17-1.89 (5H, m), 2.47 (0.5H, m), 2.67 (0.5H, m), 2.84 (0.5H, m), 2.96 (0.5H, m), 3.42 (0.5H, m), 3.49 (0.5H, m), 4.51 (1H, m), 7.54 (2H, d, J = 8.8 Hz), 8.25 (2H, d, J = 8.5 Hz) ; MS (EI) m/z: 248 (M+); Anal. Calcd. for C13H16N2O3: C, 62.89; H, 6.50; N, 11.28; Found: C, 62.78; H, 6.42; N, 11.28.
3-メチル-1-(3-メチルベンゾイル)ピペリジン(NCR-5)の製造
3,5-ジメチルピペリジンの代わりに3-メチルピペリジンを用い、製造例1と同様の方法により表題化合物(NCR-5)(収率75%)を無色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 0.77 (1.5H, s), 0.94 (1.5H, s), 1.11-1.85 (5H, m), 2.34 (3H, m), 2.41 (0.5H, m), 2.61 (0.5H, m), 2.78 (0.5H, m), 2.90 (0.5H, m), 3.57-3.65 (1H, m), 4.51 (1H, m), 7.13 (1H, d, J = 7.4 Hz), 7.17-7.18 (2H, m), 7.24 (1H, t, J = 7.8 Hz) ; MS (EI) m/z: 217 (M+).
1-ベンゾイル-3,5-ジメチルピペリジン(NCR-6)の製造
3-メチルベンゾイルクロリドの代わりにベンゾイルクロリドを用い、製造例1と同様の方法により表題化合物(NCR-6 シス体:トランス体=9:1)(収率76%)を得た。NCR-6の粗結晶1.18gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.48gを得た。
mp 107.2-108.7°C;1H-NMR (CDCl3, 500MHz,δ; ppm) 0.76-0.96 (6H, m), 1.47-1.87 (4H, m), 2.17-2.22 (0.9H, m), 2.45-2.50 (0.9H, m), 3.07 (0.1H, m), 3.21 (0.1H, m), 3.32-3.34 (0.1H, m), 3.61-3.63 (0.9H, m), 3.88 (0.1H, m), 4.68-4.70 (0.9H, m), 7.36-7.41 (5H, m) ; MS (EI) m/z: 217 (M+); Anal. Calcd. for C14H19NO : C, 77.38; H, 8.81; N, 6.45; Found: C, 77.03; H, 8.72; N, 6.59.
1-ベンゾイルピペリジン(NCR-10)の製造
3,5-ジメチルピペリジンの代わりにピペリジンを、3-メチルベンゾイルクロリドの代わりにベンゾイルクロリドを用い、製造例1と同様の方法により表題化合物(NCR-10)(収率76%)を無色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 1.41 (2H, s), 1.57 (4H, s), 3.24 (2H, s), 3.62 (2H, s), 7.29 (5H, s) ; MS (EI) m/z: 189 (M+).
3,5-ジメチル-1-(4-クロロベンゾイル)ピペリジン(NCR-11)の製造
3-メチルベンゾイルクロリドの代わりに4-クロロベンゾイルクロリドを用い、製造例1と同様の方法により表題化合物(NCR-11 シス体:トランス体=9:1)(収率77%)を得た。NCR-11の粗結晶1.11gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.53gを得た。
mp 113.5-115.4°C;1H-NMR (CDCl3, 500MHz,δ; ppm) 0.74-0.93 (7H, m), 1.45-1.96 (3H, m), 2.14-2.19 (0.9H, m), 2.45-2.50 (0.9H, m), 3.03 (0.1H, m), 3.17 (0.1H, m), 3.28 (0.1H, m), 3.54-3.56 (0.9H, m), 3.83 (0.1H, m), 4.62-4.64 (0.9H, m), 7.28-7.32 (2H, m), 7.33-7.36 (2H, m) ; MS (EI) m/z: 251 (M+); Anal. Calcd. for C14H18NO: C, 66.79; H, 7.21; N, 5.56; Found: C, 66.42; H, 6.96; N, 5.80.
3-メチル-1-(3-メチル-4-ニトロベンゾイル)ピペリジン(NCR-3)の製造
3-メチル-4-ニトロ安息香酸(1.00g)とN,N-ジメチルホルムアミド(触媒量)をジクロロメタン(20ml)に溶解させ、塩化オキサリル(0.94ml)を加え、0℃で1時間30分攪拌した。反応液を減圧濃縮し、ジクロロメタン(10ml)に溶解させ、3-メチルピペリジン(1.10g)とトリエチルアミン(1.90ml)をジクロロメタン(20ml)に溶解させた溶液に氷点下、滴下した。0℃で20時間攪拌後、反応液を水(100ml)に注ぎ、クロロホルム(50ml)で抽出した。有機層を飽和食塩水(100ml)で洗浄して、無水硫酸ナトリウムで乾燥し、ろ過後、減圧濃縮した。残渣をシリカゲルフラッシュカラムクロマトグラフィー(展開溶媒 n-ヘキサン:酢酸エチル=2 :1)で精製し、表題化合物(NCR-3)(1.37g, 収率94%)を得た。NCR-3の粗結晶1.37gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.88gを得た。
mp 82.0-82.8°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 0.72 (1.5H, d, J = 6.5Hz), 0.89 (1.5H, d, J = 6.5 Hz), 1.08-1.80 (5H, m), 2.34-2.39 (0.5H, m), 2.53 (3H, s), 2.55-2.60 (0.5H, m), 2.72-2.76 (0.5H, m), 2.84-2.89 (0.5H, m), 3.35-3.38 (0.5H, m), 3.42-3.45 (0.5H, m), 4.42-4.44(1H, m), 7.22 (1H, d, J = 8.3Hz), 7.26 (1H, s), 7.90 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 262 (M+); Anal. Calcd. for C14H18N2O3: C, 64.10; H, 6.92; N, 10.68. Found: C, 65.23; H, 7.13; N, 10.96.
1-(3-メチル-4-ニトロベンゾイル)ピペリジン(NCR-8)の製造
3-メチルピペリジンの代わりにピペリジンを用い、製造例8と同様の方法により表題化合物(NCR-8)(収率89%)を得た。NCR-8の粗結晶1.22gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.98gを得た。
mp 71.7-72.2°C; 1H-NMR (CDCl3, 500MHz,; ppm) 1.52 (2H, s), 1.69 (4H, s), 2.61 (3H, s), 3.29 (2H, s), 3.71 (2H, s), 7.33(1H, d, J = 8.3 Hz), 7.36 (1H, s), 7.99 (1H, d, J = 8.4 Hz) ; MS (EI) m/z: 248 (M+); Anal. Calcd. for C13H16N2O3 : C, 62.89; H, 6.50; N, 11.28. Found: C, 62.29; H, 6.40; N, 11.17.
N,N-ジエチル-3メチル-4-ニトロベンズアミド(NCR-9)の製造
3-メチルピペリジンの代わりにジエチルアミンを用い、製造例8と同様の方法により表題化合物(NCR-9)(収率71%)を得た。NCR-9の粗結晶0.93gをn-ヘキサン-クロロホルムより再結晶し、褐色結晶0.63gを得た。
mp 74.5-76.0°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.13 (3H, m), 1.26 (3H, m), 2.63 (3H, s), 3.24 (2H, m), 3.36 (2H, m), 7.34-7.37 (2H, m), 8.01 (1H, d, J = 8.0 Hz) ; MS (EI) m/z: 236 (M+); Anal. Calcd. for C12H16N2O3: C, 61.00; H, 6.83; N, 11.86. Found: C, 60.72; H, 6.94; N, 11.83.
3-メチル-4-ニトロ-N,N-ジプロピルベンズアミド(NCR-13)の製造
3-メチルピペリジンの代わりにジプロピルアミンを用い、製造例8と同様の方法により表題化合物(NCR-13)(収率90%)を黄色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 0.58-0.61 (3H, m), 0.79-0.82 (3H, m), 1.35-1.39 (2H, m), 1.42-1.57 (2H, s), 2.45 (3H, s), 2.97-3.00 (2H, m), 3.29-3.32 (2H, m), 7.17 (1H, d, J = 8.4 Hz), 7.19 (1H, s), 7.83 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 264 (M+).
N,N-ジイソブチル-3-メチル-4-ニトロベンズアミド(NCR-14)の製造
3-メチルピペリジンの代わりにジイソブチルアミンを用い、製造例8と同様の方法により表題化合物(NCR-14)(収率99%)を黄色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 0.65 (6H, d, J = 6.5 Hz), 0.88 (6H, d, J = 7.0 Hz), 1.75-1.81 (1H, m), 2.01-2.05 (1H, m), 2.51 (3H, s), 2.96 (2H, d, J = 7.5 Hz), 3.27 (2H, d, J= 7.5 Hz), 7.20-7.22 (2H, m), 7.89 (1H, d, J= 9.0 Hz) ; MS (EI) m/z: 292 (M+).
N,N-ジイソプロピル-3-メチル-4-ニトロベンズアミド(NCR-15)の製造
3-メチルピペリジンの代わりにジイソプロピルアミンを用い、製造例8と同様の方法により表題化合物(NCR-15)(収率71%)を得た。NCR-15の粗結晶0.94gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.60gを得た。
mp 107.6-109.7°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.16 (6H, m), 1.54 (6H, m), 3.54 (1H, m), 3.71 (1H, m), 7.26 (1H, d, J = 8.3 Hz), 7.28 (1H, s), 8.00 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 264 (M+); Anal. Calcd. for C14H20N2O3 : C, 63.62; H, 7.63; N, 10.60. Found: C, 63.47; H, 7.47; N, 10.66.
N,N-ジ-sec-ブチル-3-メチル-4-ニトロベンズアミド(NCR-16)の製造
3-メチルピペリジンの代わりにジ-sec-ブチルアミンを用い、製造例8と同様の方法により表題化合物(NCR-16)(収率83%)を黄色の油状物として得た。
1H-NMR (CDCl3, 500MHz,δ; ppm) 0.83-0.86 (3H, m), 0.95-0.98 (3H, m), 1.16-1.17 (3H, m), 1.43 (1H, m), 1.50-1.53 (3H, m), 1.58-1.60 (1H, m), 1.85-2.28 (2H, m), 2.62 (3H, s), 3.15 (1H, m), 3.46 (1H, m), 7.26-7.28 (2H, m), 7.99 (1H, d,J = 8.2 Hz) ; MS (EI) m/z: 292 (M+).
2,6-ジメチル-1-(3-メチル-4-ニトロベンゾイル)ピペリジン(NCR-17)の製造
3-メチルピペリジンの代わりにシス-2,6-ジメチルピペリジンを用い、製造例8と同様の方法により表題化合物(NCR-17)(収率82%)を得た。NCR-17の粗結晶1.14gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.79gを得た。
mp 99.7-100.5°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.29 (6H, m), 1.55-1.74 (6H, m), 1.84-1.89 (2H, m), 7.30 (1H, d, J = 8.3 Hz), 7.31 (1H, s), 8.01 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 276 (M+); Anal. Calcd. for C15H20N2O3: C, 65.20; H, 7.30; N, 10.14. Found: C, 64.97; H, 7.01; N, 10.07.
N,N-ジベンジル-3-メチル-4-ニトロベンズアミド(NCR-18)の製造
3-メチルピペリジンの代わりにジベンジルアミンを用い、シリカゲルフラッシュカラムクロマトグラフィーの代わりにn-ヘキサン-クロロホルムで再結晶を行い、製造例8と同様の方法により表題化合物(NCR-18)(収率75%)を白色結晶として得た。
mp 105.8-108.7°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 2.58 (3H, s), 4.35 (2H, s), 4.72 (2H, s), 7.12 (2H, d, J = 7.0 Hz), 7.29-7.43 (10H, m), 7.96 (1H, d, J = 8.5 Hz) ; MS (EI) m/z: 360 (M+); Anal. Calcd. for C22H20N2O3: C, 73.32; H, 5.59; N, 7.77. Found: C, 73.10; H, 5.95; N, 8.08.
1-(3-メチル-4-ニトロベンゾイル)ピロリジン(NCR-19)の製造
3-メチルピペリジンの代わりにピロリジンを用い、製造例8と同様の方法により表題化合物(NCR-19)(収率96%)を得た。NCR-19の粗結晶1.13gをn-ヘキサン-クロロホルムより再結晶し、黄色結晶0.71gを得た。
mp 61.3-61.9°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.87-1.91 (2H, m), 1.93-1.97 (2H, m), 2.58 (3H, s), 3.35 (2H, t, J = 6.7 Hz), 3.61 (2H, t, J = 7.0 Hz), 7.42 (1H, d, J = 8.3 Hz), 7.46 (1H, s), 7.96 (1H, d, J = 8.4 Hz) ; MS (EI) m/z: 234 (M+); Anal. Calcd. for C12H14N2O3: C, 61.53; H, 6.02; N, 11.96. Found: C, 61.41; H, 5.98; N, 11.92.
1-(3-メチル-4-ニトロベンゾイル)アゼパン(NCR-20)の製造
3-メチルピペリジンの代わりにアゼパンを用い、製造例8と同様の方法により表題化合物(NCR-20)(収率92%)を得た。NCR-20の粗結晶1.21gをn-ヘキサン-クロロホルムより再結晶し、黄色結晶0.69gを得た。
mp 62.5-63.8°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.62-1.65 (6H, m), 1.82-1.85 (2H, m), 2.62 (3H, s), 3.36 (2H, t, J = 5.5 Hz), 3.68 (2H, t, J = 5.5 Hz), 7.36 (1H, d, J = 8.2 Hz), 7.38 (1H, s), 8.00 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 262 (M+); Anal. Calcd. for C14H18N2O3: C, 64.10; H, 6.92; N, 10.68. Found: C, 63.84; H, 6.76; N, 10.70.
1-(3-メチル-4-ニトロベンゾイル)アゾカン(NCR-21)の製造
3-メチルピペリジンの代わりにアゾカンを用い、製造例8と同様の方法により表題化合物(NCR-21)(収率64%)を得た。NCR-21の粗結晶0.89gをn-ヘキサン-クロロホルムより再結晶し、黄色結晶0.80gを得た。
mp 75.7-77.0°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 1.59 (8H, m), 1.85-1.86 (2H, m), 2.60 (3H, s), 3.26 (2H, m), 3.61 (2H, t, J = 6.5 Hz), 7.30 (1H, d, J = 8.5 Hz), 7.31 (1H, s), 7.98 (1H, d, J = 8.3
Hz) ; MS (EI) m/z: 276 (M+); Anal. Calcd. for C15H20N2O3: C, 65.20; H, 7.30; N, 10.14. Found: C, 65.09; H, 7.29; N, 10.10.
N-シクロヘキシル-3-メチル-4-ニトロベンズアミド(NCR-22)の製造
3-メチルピペリジンの代わりにシクロヘキシルアミンを用い、製造例8と同様の方法により表題化合物(NCR-22)(収率53%)を得た。NCR-22の粗結晶0.70gをn-ヘキサン-クロロホルムより再結晶し、白色結晶0.55gを得た。
mp 134.2-141.0°C;1H-NMR (CDCl3, 500MHz,δ; ppm) 1.20-1.29 (3H, m), 1.40-1.48 (2H, m), 1.66-1.80 (3H, m), 2.04-2.05 (2H, m), 2.64 (3H, s), 3.96-3.99 (1H, m), 5.95 (1H, brs), 7.66 (1H, d, J = 8.5 Hz), 7.73 (1H, s), 7.99 (1H, d, J = 8.6 Hz) ; MS (EI) m/z: 262 (M+); Anal. Calcd. for C14H18N2O3: C, 64.10; H, 6.92; N, 10.68. Found: C, 63.89; H, 6.72; N, 10.68.
3,5-ジメチル-1-(3-メチル-4-ニトロベンジル)ピペリジン(NCR-7)の製造
3-メチル-4-ニトロベンジルブロミド(1.00g)と3,5-ジメチルピペリジン(0.60ml)と炭酸カリウム(0.90g)をアセトン(20ml)に溶解させ、6時間加熱還流した。反応液を減圧濃縮し、クロロホルム(10ml)に溶解させ、水(100ml)に注ぎ、クロロホルム(50ml)で抽出した。有機層を飽和食塩水(100ml)で洗浄して、無水硫酸ナトリウムで乾燥し、ろ過後、減圧濃縮した。残渣をシリカゲルフラッシュカラムクロマトグラフィー(展開溶媒 n-ヘキサン:酢酸エチル=10 :1)で精製し、表題化合物(NCR-7)(0.70g, 収率61%)を黄色の油状物として得た。
1H-NMR (CDCl3, 500 MHz,δ; ppm) 0.80-0.82 (6H,m), 1.44-1.48 (2H, m), 1.64-1.72 (3H, m), 2.59 (3H, s), 2.71-2.74 (2H, m), 3.46 (2H, s), 7.27-7.29 (2H, m), 7.92 (1H, d, J = 9.0 Hz) ; MS (EI) m/z: 262 (M+);
3,5-ジメチル-1-[(3-メチル-4-ニトロフェニル)スルホニル]ピペリジン(NCR-12)の製造
工程1:3-メチル4-ニトロベンゼンチオール(1)の製造
5-クロロ-2-ニトロトルエン(1.00g)と硫化ナトリウム9水和物(1.01g)と硫黄(136.24mg)と水酸化ナトリウム(233.12mg)をエタノール(20ml)に溶解させ、2時間加熱還流した。反応液を10%塩酸(100ml)に注ぎ、酢酸エチル(50ml)で抽出した。有機層を飽和食塩水(100ml)で洗浄して、無水硫酸ナトリウムで乾燥し、ろ過後、減圧濃縮した。残渣をシリカゲルフラッシュカラムクロマトグラフィー(展開溶媒 n-ヘキサン:酢酸エチル=15 :1)で精製し、表題化合物(1)(0.74g, 収率75%)を褐色結晶として得た。
1H-NMR (DMSO, 500 MHz,δ; ppm) 2.01 (1H,s), 2.48 (3H, s), 7.50-7.63 (2H, m), 7.99 (1H, s).
工程2:3-メチル-4-ニトロベンゼンスルホン酸(2)の製造
1H-NMR (DMSO, 500 MHz,δ; ppm) 2.56 (3H, s), 7.78 (1H, d, J = 8.1 Hz), 7.83 (1H, s), 7.96 (1H, d, J = 8.4 Hz).
工程3:3,5-ジメチル-1-[(3-メチル-4-ニトロフェニル)スルホニル]ピペリジンの製造
mp 132.7-138.5°C; 1H-NMR (CDCl3, 500MHz,δ; ppm) 0.88-0.89 (6H, m), 1.58-1.81 (6H, m), 3.76 (2H, d, J = 6.5 Hz), 7.73 (1H, d, J = 8.0 Hz), 7.75 (1H, s), 8.06 (1H, d, J = 8.3 Hz) ; MS (EI) m/z: 312 (M+);
Anal. Calcd. for C14H20N2O4S :C, 53.83; H, 6.45; N, 8.97; Found: C, 53.62; H, 6.49; N, 9.11.
以下のSTD-NMR測定条件で実験を行った。
1.試料
(1)タンパク質:15N-mSin3B(WO2006/030722の実施例1に記載の方法により、15N-mSin3B(mSin3BのPAH1ドメイン(a.a.28-107)の15N標識体)を調製した。)
(2)リガンド: 3,5-ジメチルピペリジル3-メチル-4-ニトロフェニルケトン(SPECSから購入)、1-[4-(ジフルオロメトキシ)フェニル]-2-(3,5-ジメチルピペリジル)エタン-1-オン(Enamineから購入)、3,5-dimethylpiperidyl 4-chloro-3-nitrophenyl ketone(Vitas-M Laboratory, LTD.から購入)、3,5-dimethylpiperidyl 4-fluorophenyl ketone(Vitas-M Laboratory, LTD.から購入)、2-(2,6-dimethylmorpholin-4-yl)-N-(2-chloro-4-fluorophenyl)acetamide(Enamineから購入)、1-ベンゾイル-3,5-ジメチルピペリジン(NCR6)(製造例5で製造), 3,5-ジメチル-1-(3-メチル-4-ニトロベンジル)ピペリジン(NCR7) (製造例21で製造), 3,5-ジメチル-1-(4-クロロベンゾイル)ピペリジン(NCR11) (製造例7で製造), 3-メチル-4-ニトロ-N,N-ジプロピルベンズアミド(NCR13) (製造例11で製造), N,N-ジイソブチル-3-メチル-4-ニトロベンズアミド(NCR14) (製造例12で製造), N,N-ジイソプロピル-3-メチル-4-ニトロベンズアミド(NCR15)(製造例13で製造)
2.試料調製
(1)測定に必要な試料体積は500uLで調製した。
(2)タンパク質の濃度は10uM、リガンドの濃度は400uMとした。
(3)溶媒は100mMリン酸緩衝液-pH7.2(5%d-DMSO)で行い、タンパク質とリガンドを混合した。
3.NMR測定条件
1H-STD、積算4、測定時間2分
4.NMR装置
Bruker AVANCE 600MHz (cryo-probe), Bruker AVANCE 700MHz (cryo-probe)
結果を図1〜11に示す。測定に用いたリガンド11種は、STDスペクトルが観察されたことから、タンパク質との相互作用があると判定された。
3,5-ジメチルピペリジル3-メチル-4-ニトロフェニルケトン(化合物155)と1-[4-(ジフルオロメトキシ)フェニル]-2-(3,5-ジメチルピペリジル)エタン-1-オン(化合物A28)について、細胞増殖効果を調べた(ヒト髄芽腫細胞株を用いたMTT Assay)。
化合物;3,5-ジメチルピペリジル3-メチル-4-ニトロフェニルケトン(化合物155)(SPECSから購入)、1-[4-(ジフルオロメトキシ)フェニル]-2-(3,5-ジメチルピペリジル)エタン-1-オン(化合物A28)(Enamineから購入)
細胞;DAOY(ヒト髄芽細胞腫細胞株)(横浜市立大学医学部脳神経外科の菅野より供与された)
培地;DMEM (High Glucose, ナカライテスク)
細胞数測定試薬;MTT細胞数測定キット(ナカライテスク)
MTT assay;(操作)
-1日目:96well plateに、DAOYを5x103 cells/wellになるよう播いたプレートを3枚用意し、それぞれ、Day0用、Day1用、Day3用とした。培地は10% FBS入りのDMEMを用いた。
0日目:Day0用のplateを用いてMTT Assayを行い、basalの細胞数における活性を測定した。
Day1用、Day3用については、化合物を最終濃度が100 μg/mlになるように添加した。(コントロールはDMEM only および溶媒のDMSOを含有するDMEMとした)
具体的には、化合物を含むDMEMを用意し、培地交換により添加した。この時、過剰な増殖シグナルによる、化合物の効果のマスキングを防ぐため、FBSの濃度を5%に落とした。
1日目:Day1用のplateを用いてMTT Assayを行った。
3日目:Day3用のplateを用いてMTT Assayを行った。
データ解析;各化合物添加用のWell列に相当する、Day0のMTT活性値(Ab570nm)の平均を100とし、Day1、Day3における増殖率を算出した。
実験は1回の実験を4連で行い、これを3度繰り返した。
Day0の値により相対値化した値をもとに、N = 12wellでのデータを算出し、統計検定を行った。
検定は、DMEM onlyと化合物もしくはDMSO添加細胞数の間におけるT検定により行った。
※MTT Assay:ミトコンドリアの呼吸活性を指標に、細胞数を測定する手法。呼吸活性が高い(Ab570nmの値が高い)と、細胞数が多いと解釈することができる。
下記の表にまとめる。
材料及び方法
化合物;No. 5、No. 15、No. 23、NCR 6、NCR 7、NCR 11、NCR 13、NCR 14、NCR 15
細胞; DAOY(ヒト髄芽細胞腫細胞株)
培地; DMEM (High Glucose, ナカライテスク)
細胞数測定試薬;MTT細胞数測定キット(ナカライテスク)※以下、MTT assay
-1日目
96well plateに、DAOYを5x103
cells/wellになるよう播いたプレートを3枚用意し、それぞれ、Day0用、Day1用、Day3用とした。培地は10% FBS入りのDMEMを用いた。
0日目
Day0用のplateの培地を5% FBS入りのDMEMにかえて30分培養後、MTT
Assayを行い、basalの細胞数における活性を測定した。
Day1用、Day3用については、5% FBS入りのDMEMに交換するとともに化合物を添加した。(コントロールとしては、溶媒のDMSOのみを添加したものを用意した)
1日目
Day1用のplateを用いてMTT Assayを行った。
3日目
Day3用のplateを用いてMTT Assayを行った。
各化合物添加用のWell列に相当する、Day0のMTT活性値(Ab570nm)の平均を100とし、Day1、Day3における増殖率を算出した。
実験は1回の実験を4連で行った。
検定は、化合物添加細胞とDMSO添加細胞間におけるT検定により行った。
No.5、No15、No23については、最終濃度が100μg/ml、10μg/ml、1μg/ml、0.1μg/mlとなるように添加した細胞における増殖率を調べたところ、いずれも化合物濃度が100μg/mlの場合に、MTT assay測定値が、DMSO添加細胞と比べて有意に減少した。No5は実験期間中、MTT assay測定値が大きく変化しなかったことから、増殖を抑制する作用がある可能性が高い。一方、No15、No23は化合物添加から3日後には、ほぼすべての細胞が死滅していた。従って、No15、No23は細胞殺傷性を有する化合物であることが示唆された(図12)。
方法
C57BL/6J系雄性マウス6-10週令(20-25 g)(株式会社テクサム)を用いて、坐骨神経の部分結紮による神経障害性疼痛モデルを作製した(Inoue et al., Nature Medicine, 10: 712-718, 2004)。mSin3B化合物は100%DMSOに溶解した。投与直前に、人工脳脊髄液にて希釈し(DMSOの最終濃度:0.5%)、0.5 nmol/5 mlにて脊髄くも膜下腔内投与(i.t.)した。対照群には、人工脳脊髄液にて希釈したDMSO(0.5%)をvehicleとして投与した。また、mSin3B化合物の全身性投与を行う実験では、投与直前に生理食塩水にて希釈し(DMSOの最終濃度:10%)、5 mg/kgにて腹腔内投与(i.p.)した。この際の対照群には、生理食塩水にて希釈したDMSO(10%)をvehicleとして投与した。一方、モルヒネは、生理食塩水に溶解し、30 nmol/20 mlにて足蹠皮下投与(i.pl.)した。モルヒネ投与後10分から60分までのAUCを算出し、モルヒネ鎮痛効果を評価した。疼痛に関する行動学的解析には、(1)C線維特異的な電気刺激(5 Hz)に対する疼痛閾値を評価する“electrical stimulation-induced paw withdrawal(EPW)test” (Matsumoto et al., J Pharmacol Exp Ther, 318:735-740, 2006; Ueda, Mol Pain, 4:11, 2008, REVIEW)、(2)熱刺激に対する疼痛閾値を評価する“thermal paw withdrawal test” (Inoue et al., Nature Medicine, 10: 712-718, 2004)を用いた。疼痛関連遺伝子群(Nav1.8とMOP)の発現解析には、神経障害後における一次知覚神経の細胞体(脊髄後根神経節)を用い、定量的リアルタイムPCRにより評価した。
※mSin3B化合物:3,5-ジメチルピペリジル3-メチル-4-ニトロフェニルケトン(化合物155)、1-[4-(ジフルオロメトキシ)フェニル]-2-(3,5-ジメチルピペリジル)エタン-1-オン(化合物A28)、N-[(4-フルオロフェニル)メチル]-N’-(3-メチルブチル)ブタン-1,4-ジアミド(化合物106)
実験(1)
神経障害3日後にmSin3B化合物(A28)を単回投与し、投与3、6、12時間後の脊髄後根神経節における疼痛関連遺伝子群(Nav1.8とMOP)のmRNAレベルを解析した(各n=3)。その結果、神経障害後におけるNav1.8とMOPの発現低下は、A28(0.5 nmol i.t.)処置により10-15%程度回復する傾向が認められた(図14)。効果発現には、3-6時間程度を要することが示唆された。
次に、神経障害後の知覚鈍麻に対するmSin3B化合物(A28、155、106(NC))の有効性について、EPW testを用いて評価した。神経障害3日後には、対照群(sham-veh群 n=6)と比較して、神経障害群(injury-veh群 n=5; injury-A28群 n=6; injury-155群 n=6; injury-106群 n=6)ではC線維刺激に対する疼痛閾値の増加(すなわち知覚鈍麻)が観察された。さらに、mSin3B化合物(A28、155、106(NC))またはVehicleは、行動解析後に1日1回投与した。その結果、injury-A28群および injury-155群では、神経障害4日後(投与開始1日後)から知覚鈍麻の回復傾向が観察され、その傾向は神経障害5日後(投与開始2日後)においてより顕著になった(図15)。統計学的解析を行ったところ、injury-A28および155群では神経障害3日後と神経障害5日後の疼痛閾値に有意差が認められた。一方、injury-106群では疼痛閾値への影響が認められなかった。
次いで、臨床的適応を考慮して、mSin3B化合物 (A28, 155)(5 mg/kg)を全身性(腹腔内投与)に3、4、5日と連続投与し、疼痛閾値に及ぼす効果を解析した。疼痛試験はいずれも化合物投与前に行った。その結果、神経障害3日後(コントロール)における疼痛鈍麻に対し、化合物A28と155のいずれの投与についても経日的に疼痛鈍麻の回復が観察された(各n=3)(図16)。
さらに、神経障害後のモルヒネ抵抗性に対するmSin3B化合物(A28、155、106(NC))の有効性について、thermal paw withdrawal testを用いて評価した。神経障害3日後からmSin3B化合物(A28、155、106(NC))の投与を開始し、神経障害5日後(投与開始2日後)に末梢性モルヒネ(30 nmol i.pl.)鎮痛を解析した(sham-veh群 n=6; injury-veh群 n=5; injury-A28群 n=6; injury-155群 n=6; injury-106群 n=3)。その結果、sham-veh群と比較して、injury-veh群ではモルヒネ鎮痛効果が消失していたが、injury-A28群ではsham-veh群とほぼ同程度のモルヒネ鎮痛が得られた。また、injury-155群においてもモルヒネ鎮痛の有意な回復が認められた。一方、injury-106群では、モルヒネ鎮痛はほとんど認められなかった。これらの結果を図17に示す。
mSin3B化合物(A28, 155)(0.5 nmol i.t.)投与後の脊髄後根神経節におけるNav1.8のmRNAレベルを定量的リアルタイム法により評価したところ、神経障害によるNav1.8の発現低下に対して化合物155は顕著な抑制効果を示したが、A28においては有意な変化が見られなかった(sham-veh群 n=3; injury-veh群 n=3; injury-A28群 n=3; injury-155群 n=2)(図18)。
本明細書で引用した全ての刊行物、特許および特許出願をそのまま参考として本明細書にとり入れるものとする。
Claims (2)
- 下記のいずれかの式で表される化合物又はその医薬的に許容される塩を含む、髄芽腫又は神経障害性疼痛の予防薬及び/又は治療薬として使用される医薬組成物。
- 下記のいずれかの式で表される化合物又はその医薬的に許容される塩。
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CA3051538A1 (en) | 2017-02-07 | 2018-08-16 | Oblique Therapeutics Ab | Heterocyclylsulfonyl-substituted pyridines and their use in the treatment of cancer |
WO2019044844A1 (ja) * | 2017-08-28 | 2019-03-07 | 株式会社PRISM BioLab | 新規Sin3モジュレーター及びその医薬用途 |
CN115887655A (zh) * | 2021-09-30 | 2023-04-04 | 中国科学院脑科学与智能技术卓越创新中心 | 直接转分化治疗神经系统疾病 |
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JPWO2011099502A1 (ja) | 2013-06-13 |
US9206125B2 (en) | 2015-12-08 |
WO2011099502A1 (ja) | 2011-08-18 |
EP2535059A1 (en) | 2012-12-19 |
US20130203738A1 (en) | 2013-08-08 |
EP2535059A4 (en) | 2014-03-12 |
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