JP2013518815A - カリウムチャネルモジュレーターとしての4−(n−アザシクロアルキル)アニリドの誘導体 - Google Patents
カリウムチャネルモジュレーターとしての4−(n−アザシクロアルキル)アニリドの誘導体 Download PDFInfo
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- JP2013518815A JP2013518815A JP2012551221A JP2012551221A JP2013518815A JP 2013518815 A JP2013518815 A JP 2013518815A JP 2012551221 A JP2012551221 A JP 2012551221A JP 2012551221 A JP2012551221 A JP 2012551221A JP 2013518815 A JP2013518815 A JP 2013518815A
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- 108020001213 potassium channel Proteins 0.000 title claims abstract description 22
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 22
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- 229940126062 Compound A Drugs 0.000 claims description 19
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 67
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- 235000019439 ethyl acetate Nutrition 0.000 description 14
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Classifications
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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
- A61K31/33—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
- A61K31/47—Quinolines; Isoquinolines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D217/00—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
- C07D217/02—Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with only hydrogen atoms or radicals containing only carbon and hydrogen atoms, directly attached to carbon atoms of the nitrogen-containing ring; Alkylene-bis-isoquinolines
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Abstract
Description
本出願は、2007年8月22日に出願された米国特許出願第11/894,877号の一部継続出願であり、この米国特許出願第11/894,877号は、2006年8月23日に出願された米国仮特許出願第60/839,941号の利益を主張し、この各々は、全内容が本明細書に援用される。
本発明は、電位型カリウムチャネルを活性化またはそうでなければ調節する新規な化合物に関するものである。該化合物は、カリウムイオンチャネルの調節に影響される疾患および障害の治療および予防に有用である。このような状態の1つは発作障害である。
てんかんは、人口の約3%に見出される周知の神経疾患である。てんかん患者の約30%が現在有効な療法に応答しない。このように不運な患者−世界中で数十万人に達する−は、制御できない発作と、その結果医療保険、雇用、および運転などの生活の重大な領域において選択肢が狭まることとの両方に対処しなければならない。
下に示すベンジルアミン誘導体
R6は、HまたはC1〜C3アルキルであり;すべてのシクロアルキルおよびシクロアルケニル基は、N、O、およびSより独立して選択された1または2個の環ヘテロ原子を場合により含有し;R1、R2、R’、R3、R4、R5、R6、およびArにおけるすべてのアルキル、シクロアルキル、アルケニル、シクロアルケニル、ヘテロシクロアルキル、ヘテロシクロアルケニル、アルキニル、アリール、およびヘテロアリール基は、C1〜C3アルキル、ハロゲン、CN、OH、OMe、OEt、CN、CH2F、およびトリフルオロメチルより独立して選択された1または2個の置換基によって場合により置換され;加えて、すべてのシクロアルキルおよびヘテロシクロアルキル基は、カルボニル基によって場合により置換される。このような化合物は、カリウムチャネルアクチベータまたはモジュレータである。
の、治療または予防を必要とする患者への投与を含む、方法をを提供または考慮する。このような実施形態において、KCNQ1は、実質的に影響されない。
本発明によって考慮されるように、式IAの化合物は1日当たり2000mgまでの経口または静脈投薬のために設計されている。さらにこれらの化合物の多くの高い活性は、1日当たり1200mg未満−成人におけるレチガビンの現在の予想投薬レベル−の投薬が可能であることを示している。それゆえ本発明は、経口投与用に製剤される式IAの化合物の錠剤、カプセル剤、液剤、および懸濁剤を含む。同様に式IAの化合物に加えて、多くの他の例の中でもソルビトールまたはプロピレングリコールなどのシロップも含む経口小児用投与に適切な液剤および懸濁剤も考慮される。さらに詳細には式IAの化合物に加えて、着色料および着香料と共にソルビトールまたはプロピレングリコールなどのシロップも含む、経口小児用投与に適切な液剤および懸濁剤も考慮される。加えて、医薬的に許容される打錠剤ならびに他の医薬的に許容される担体および賦形剤と共に式IAの化合物を含むチュアブルおよびノンチュアブル錠剤のどちらも考慮される。本明細書で使用するように、医薬的に許容される担体という用語は、医薬品製剤分野で通例使用されるような、このような賦形剤、結合剤、滑沢剤、打錠剤、崩壊剤、保存料、抗酸化剤、香料および着色料を含む。このような剤の例としては、−これに限定されるわけではないが−デンプン、炭酸カルシウム、リン酸水素カルシウム(dibasic calcium phosphate)、リン酸水素カルシウム(dicalcium phosphate)、微結晶性セルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロースラクトース、ポリエチレングリコール、ポリソルベート、グリコール、ベニバナ油、ゴマ油、ダイズ油、およびポビドンが挙げられる。加えて、ナトリウムデンプングリコラートなどの崩壊剤;ステアリン酸マグネシウム、ステアリン酸およびSiO2などの滑沢剤;およびシクロデキストリンなどの溶解度向上剤が、各群の他の多くの例の中でも考慮される。このような物質およびそれらを使用する方法は医薬分野で周知である。さらなる例は、Kibbe,Handbook of Pharmaceutical Excipients,London,Pharmaceutical Press,2000に挙げられている。
の患者への投与を含む、患者における、KCNQ2/3、KCNQ4、およびKCNQ5から選択される少なくとも1つのカリウムイオンチャネルの調節に影響される疾患、障害、または状態を治療または予防する方法を提供する。このような実施形態において、KCNQ1は、実質的に影響されない。したがって、化合物Aは、神経系と関連付けられるカリウムチャネルのKCNQファミリーのメンバーであるKCNQ2〜KCNQ5に対して選択的に影響を与えるが、心臓電位と関連付けられるものであるKCNQ1には影響を与えないことが見出されている。この選択性は、心臓と関連付けられるカルシウムチャネルKCNQ1に影響を与えることなく、神経系と関連付けられる疾患、障害、または状態を治療するのに有用である。化合物Aは、例えば、鎮痙薬、抗痙攣剤、および神経病性疼痛の処置において、使用され得る。
一般的な方法
セクションI
式VIの化合物の調製は、便宜上、置換テトラヒドロイソキノリン、
式IXの化合物の調製はスキーム2に概説されている。
式XIIの化合物の調製はスキーム3に概説されている。
式XIIIの化合物の調製はスキーム4に概説されている。
式XIVの化合物の調製はスキーム5に概説されている。
開始物質:ブロモジメチルアニリンは、Alfa AesarまたはSigma Aldrichのどちらかから入手した。
N−(2−クロロ−4−(3,4−ジヒドロイソキノリン−2(1H)−イル)−6−(トリフルオロメチル)フェニル)−3,3−ジメチルブタンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン
N−(2−クロロ−4−(3,4−ジヒドロイソキノリン−2(1H)−イル)−6−(トリフルオロメチル)フェニル)−3,3−ジメチルブタンアミド:
N−(4−(3,4−ジヒドロイソキノリン−2(1H)−イル)−2,6−ジメチルフェニル)−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 300 MHz) δ 1.03 (s, 9H), 2.08 (s, 6H), 2.15 (s, 2H), 2.89 (t, J = 5.7 Hz, 2H), 3.49 (t, J = 5.7 Hz, 2H), 4.31 (s, 2H), 6.68 (s, 2H), 7.2 (m, 4H), 8.86 (s, 1 H).
N−(2−クロロ−4−(3,4−ジヒドロイソキノリン−2(1H)−イル)−6−(トリフルオロメチル)フェニル)−3−シクロペンチルプロパンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン:
収率: 28%。 1H NMR (CDC13, 300 MHz) δ 1.15 (m, 2H), 1.65 (m, 4H), 1.85 (m, 4H), 2.44 (t, J = 7.5 Hz, 2H), 3.01 (t, J = 5.7. Hz, 2H), 3.6 (t, J = 5.7. Hz, 2H), 4.43 (s, 2H), 6.72 (s, 1H), 7.10 (m, 2H), 7.24 (m, 4H).
N−(2−クロロ−4−(6−フルオロ−3,4−ジヒドロイソキノリン−2(1H)−イル)−6−(トリフルオロメチル)フェニル)−3,3−ジメチルブタンアミド:
ステップA:6−フルオロ−3,4−ジヒドロイソキノリン−1(2H)−オン:
N−[2−クロロ−4−(3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−メチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−メチルフェニル)−3,3−ジメチル−ブタンアミド:
本化合物の合成は、実施例4、ステップCに記載したように実施した。
1H NMR (DMSO-d6, 300 MHz) δ 1.03 (s, 9H), 2.12 (s, 3H), 2.15 (s, 2H), 2.89 (t, J = 5.7 Hz, 2H), 3.53 (t, J = 5.7 Hz, 2H), 4.36 (s, 2H), 6.87 (d, J = 9.6, 2H), 7.2 (m, 4H), 9.08 (s, 1 H).
N−[2−クロロ−4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−トリフルオロメチル−フェニル]−3−シクロペンチル−プロピオンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン:
1H NMR (DMSO-d6, 300 MHz) δ 1.07 (m, 2H), 1.57 (m, 6H), 1.75 (m, 3H), 2.31 (m, 2H), 2.93 (t, J = 5.1 Hz, 2H), 3.60 (t, J = 5.4 Hz, 2H), 4.45 (s, 2H), 7.06 (m, 2H), 7.15 (s, 1H), 7.32 (m, 2H), 9.39 (s, 1H).
N−[2,6−ジメチル−4−(6−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
N−[2−クロロ−6−トリフルオロメチル−4−(6−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン:
N−[2−クロロ−4−(6−クロロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−トリフルオロメチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン:
1H NMR (DMSO-d6, 500 MHz) δ 1.02 (s, 9H), 2.17 (s, 2H), 2.92 (t, J = 5.35 Hz, 2H), 3.61 (t, J = 5.6 Hz, 2H), 4.47 (s, 2H), 7.16 (s, 1H), 7.29 (m, 3H), 7.34 (s, 1H), 9.31(s, 1H).
N−[4−(6−クロロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2,6−ジメチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 500 MHz) δ 1.03 (s, 9H), 2.08 (s, 6H), 2.15 (s, 2H), 2.89 (t, J = 5.25 Hz, 2H), 3.47 (t, J = 5.6 Hz, 2H), 4.30 (s, 2H), 6.68 (s, 2H), 7.25 (m, 3H), 8.85 (s, 11-1).
N−[4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2,6−ジメチルフェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 500 MHz) δ 1.03 (s, 9H), 2.08 (s, 6H), 2.15 (s, 2H), 2.89 (t, J = 5.25 Hz, 2H), 3.47 (t, J = 5.6 Hz, 2H), 4.30 (s, 2H), 6.68 (s, 2H), 6.99 (m, 2H), 7.25 (m, 1H), 8.84 (s, 1H).
N−[2−クロロ−4−(7−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−トリフルオロメチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:4−ブロモ−2−クロロ−6−(トリフルオロメチル)アニリン:
1H NMR (DMSO-d6, 500 MHz) δ 1.02 (s, 9H), 2.17 (s, 2H), 2.89 (t, J = 5.1 Hz, 2H), 3.61 (t, J = 5.7 Hz, 2H), 4.49 (s, 2H), 7.03 (dd, J = 8.6, 2,3 Hz, 1 H), 7.12 (m, 2H), 7.16 (d, J = 2.2 Hz, 1H), 7.23 (m, 1H), 7.33 (d, J = 2.6, 1H), 9.30 (s, 1H).
N−[4−(7−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2,6−ジメチル−フェニル]−3,3−ジメチル−ブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMBO-d6, 400 MHz) δ 1.05 (s, 9H), 2.10 (s, 6H), 2.17 (s, 2H), 2.89 (t, J = 5.1 Hz, 2H), 3.49 (t, J = 5.7 Hz, 2H), 4.34 (s, 2H), 6.70 (s, 2H), 7.0 (m, 1H), 7.1 (m, 1H), 7.2 (m, 1H), 8.9 (s, 1H).
N−[2−クロロ−4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−メチルフェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−メチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.05 (s, 9H), 2.14 (s, 3H), 2.17 (s, 2H), 2.91 (t, J = 5.25 Hz, 2H), 3.52 (t, J = 5.6 Hz, 2H), 4.37 (s, 2H), 6.85 (s, IH), 6.9 (s, 1H), 7.0 (m, 2H), 7.3 (m, 1 H), 9.10 (s, 1 H).
N−[2−クロロ−4−(7−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−メチルフェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−メチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSQ-d6, 400 MHz) δ 1.04 (s, 9H), 2.14 (s, 3H), 2.18 (s, 2H), 2.88 (t, J = 5.25 Hz, 2ff), 3.55 (t, J = 5.6 Hz, 2H), 4.4 (s, 2H), 6.88 (s, 1 H), 6.9 (s, 1 H), 7.0 (m, 1 H), 7.1 (m, 1 H), 7.2 (m, 1 H), 9.10 (s, 1 H).
N−[2−クロロ−6−メチル−4−(6−フルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−メチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 400 MHz) 6 1.08 (s, 9H), 2.17(s, 3H), 2.21 (s, 2H), 3.0 (t, J= 5.25 Hz, 2H), 3.6 (t, J= 5.6 Hz, 2H), 4.5 (s, 2H), 6.9 (s, 1 H), 6.95 (s, 1 H), 7.3 (m, 1 H), 7.5 (m, 2H), 9.13 (s, 1 H).
N−[2−クロロ−4−(6−クロロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−メチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−メチル−フェニル)−3,3−ジメチルブタンアミド:
1H NMR (DMS4-d6, 400 MHz) δ 1.06 (s, 9H), 2.14 (s, 3H), 2.18 (s, 2H), 2.9 (t, J = 5.25 Hz, 2H), 3.5 (t, J = 5.6 Hz, 2H), 4.4 (s, 2H), 6.85 (s, 1H), 6.9 (s, 1H), 7.25 (m, 3H), 9.1 (s, 1H).
N−[2−クロロ−4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.04 (s, 9H), 2.19 (s, 2H), 2.93 (t, J = 8 Hz, 2H), 3.54 (t, J = 8 Hz, 2H), 4.37 (s, 2H), 6.96 (dd, J = 4, 12 Hz, 1H), 7.04 (m, 3H), 7.27 (m, 1 H), 7.34 (d, J = 8 Hz, 1H), 9.17 (s, 1H).
N−[4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2−メチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−メチル−フェニル)−3,3−ジメチルブタンアミド:
本化合物の合成は、実施例4、ステップCに記載したように実施した。
1H NMR (DMSO-d6, 400 MHz) δ 1.04 (s, 9H), 2.14 (s, 3H), 2.16 (s, 2H), 2.91 (t, J = 8 Hz, 2H), 3.48 (t, J = 8 Hz, 2H), 4.31 (s, 2H), 6.8 (dd, J = 4, 12 Hz, 1H), 6.85 (s, 1H), 7.0 (m, 2H), 7.09 (d, J = 8 Hz, 1H), 7.3 (m, 1H), 8.98 (s, 1H).
N−[4−(6−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2−トリフルオロメチルフェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−トリフルオロメチル−フェニル)−3,3−ジメチルブタンアミド:
本化合物の合成は、実施例4、ステップCに記載したように実施した。
1H NMR (DMSO-d6, 400 MHz) δ 1.02 (s, 9H), 2.18 (s, 2H), 2.94 (t, J = 8 Hz, 2H), 3.59 (t, J = 8 Hz, 2H), 4.43 (s, 2H), 7.0 (m, 2H), 7.17 (m, 3H), 7.3 (m, 1 H), 9.18 (s, 1 H).
N−[2−クロロ−4−(6−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−フェニル)−3,3−ジメチルブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.03 (s, 9H), 2.19 (s, 2H), 2.99 (t, J = 8 Hz, 2H), 3.58 (t, J = 8 Hz, 2H), 4.48 (s, 2H), 6.99 (dd, J = 4, 8 Hz, 1 H), 7.08 (d, J = 4 Hz, 1 H), 7.35 (dd, J = 4, 8 Hz, 1 H), 7.48 (dd, J = 4, 8 Hz, 1H), 7.56 (m, 2H), 9.19 (s, 1 H).
N−[4−(7−フルオロ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2−トリフルオロメチル−フェニル]−3,3−ジメチルブタンアミド:
ステップA:N−(4−ブロモ−2−トリフルオロメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.02 (s, 911), 2.18 (s, 2H), 2.90 (t, J 8 Hz, 2H), 3.60 (t, J = 8 Hz, 2H), 4.46 (s, 2H), 7.0 (m, 1H), 7.23 (m, 5H), 9.17(s, 1H).
3,3−ジメチル−N−[2−トリフルオロメチル−4−(7−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−ブタンアミド
ステップA:N−(4−ブロモ−2−トリフルオロメチル−フェニル)−3,3−ジメチルブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.02 (s, 9H), 2.18 (s, 2H), 3.01 (t, J = 8 Hz, 2H), 3.62 (t, J = 8 Hz, 2H), 4.56 (s, 2H), 7.24 (m, 3H), 7.44 (d, J = 4 Hz, 1 H), 7.52 (d, J = 4 Hz, 1H), 7.67 (s, 1 H), 9.18 (s, 1 H).
N−[4−(6−メトキシ−3,4−ジヒドロ−1H−イソキノリン−2−イル)−2,6−ジメチル−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMS4-d6, 400 MHz) δ 1.05 (s, 9H), 2.10 (s, 6H), 2.14 (s, 2H), 2.87 (t, J = 8 Hz, 2H), 3.48 (t, J = 8 Hz, 2H), 3.72 (s, 3H), 4.26 (s, 2H), 6.68 (s, 2H), 6.79 (m, 2H), 7.14 (m, 1H), 8.85 (s, 1H).
N−[2,6−ジメチル−4−(7−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチルブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチルブタンアミド:
1H NMR (DMSO-d6, 400 MHz) δ 1.06 (s, 9H), 2.11 (s, 6H), 2.18 (s, 2H), 2.89 (t, J = 4 Hz, 2H), 3.54 (t, J = 4 Hz, 2H), 4.44 (s, 2H), 6.73 (s, 2H), 7.40 (d, J = 8 Hz, 1H), 7.51 (d, J = 8 Hz, 1 H), 7.62 (s, 1 H), 8.87 (s, 1 H).
N−[4−(3,4−ジヒドロ−1H−イソキノリン−2−イル)−2−メトキシ−6−メチル−フェニル]−3,3−ジメチル−ブタンアミド
ステップA:4−ブロモ−2−メトキシ−6−メチル−アニリン:
1H-NMR (DMSO-d6, 400MHz): δ 8.64 (brs, 1H, exchangeable with D20), 7.20 (m, 4H), 6.48 (s, 1H), 6.43 (s, 1H), 4.37 (s, 2H), 3.73 (s, 3H), 3.52 (t, J = 6.OHz, 2H), 2.92 (t, J = 6.OHz, 2H), 2.13 (s, 2H), 2.08 (S, 3H), 1.04 (s, 9H). MS: 367 (M+1).
N−[2−クロロ−4−(3,4−ジヒドロ−1H−イソキノリン−2−イル)−6−トリフルオロメチル−フェニル]−3,3−ジメチル−ブタンアミド
ステップA:N−(4−ブロモ−2−クロロ−6−トリフルオロメチル−フェニル)−3,3−ジメチル−ブタンアミド:
N−[4−(3,4−ジヒドロ−1H−イソキノリン−2−イル)−2,6−ジメトキシ−フェニル]−3,3−ジメチル−ブタンアミド
ステップA:5−ブロモ−1,3−ジメトキシ−2−ニトロ−ベンゼン:
1H-NMR (DMSO-d6, 400MHz): δ 7.17 (s, 2H), 3.89 (s, 6H).
N−[2,6−ジメチル−4−(6−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−3,3−ジメチル−チオブタンアミド
ステップA:N−(4−ブロモ−2,6−ジメチル−フェニル)−3,3−ジメチル−ブタンアミド:
1H NMR (DMSO-d6, 500 MHz) δ 1.03 (s, 9H), 2.09 (s, 6H), 2.15 (s, 2H), 2.98 (t, J = 5.0 Hz, 2H), 3.52 (t, J = 6.0 Hz, 2H), 4.40 (s, 2H), 6.71 (s, 2H), 7.45 (d, J = 8.0, 1 H), 7.52 (m, 2H), 8.87 (s, 1 H).
1H NMR (DMSO-d6, 400 MHz) δ 1.12 (s, 9H), 2.11 (s, 6H), 2.73 (s, 2H), 3.0 (t, J = 5.0 Hz, 2H), 3.57 (t, J = 4.0 Hz, 2H), 4.46 (s, 2H), 6.75 (s, 2H), 7.47 (d, J = 8.0, IH), 7.56 (m, 2H), 10.7 (s, 1H).
[2,6−ジメチル−4−(6−トリフルオロメチル−3,4−ジヒドロ−1H−イソキノリン−2−イル)−フェニル]−カルバミン酸エチルエステル:
ステップA:(4−ブロモ−2,6−ジメチル−フェニル)−カルバミン酸エチルエステル:
1H NMR (DMSO-d6, 400 MHz) δ 1.23 (t, J = 7.2 Hz, 3H), 2.12 (s, 6H), 3.0 (t, J = 6.4 Hz, 2H), 3.52 (t, J = 6.3 Hz, 2H), 4.08 (q, J = 13.6, 8.3 Hz, 2H), 4.42 (s, 2H) 6.73 (s, 2H), 7.46 (d, J = 7.4, 1H), 7.54 (m, 2H), 8.32 (s, 1H).
本発明の式の化合物を、細胞ベースRb+流出アッセイでカリウムチャネルに対する活性について評価した。本細胞バイオアッセイは、KCNQ2/3ヘテロマルチマーによって確認されたM電流チャネル活性を忠実に表すと考えられる。本発明の最も活性な化合物は、レチガビンと比較して40〜400倍の改善に相当する、1桁のnM範囲のEC50を有する。加えて、生体内での抗発作活性をマウス最大電気ショック発作(MES)モデルで評価して、神経毒性を回転棒神経認知運動障害モデルから決定した。
ルビジウム流出試験
PC−12細胞を、10%ウマ血清、5%ウシ胎仔血清、2mMグルタミン、100U/mlペニシリン、および100U/mlストレプトマイシンを添加したDMEM/F12培地(カリフォルニア州カールスバッドのInvitrogenより入手できるNutrient Mix F−12を含むダルベッコ変法イーグル培地)中で37℃および5% CO2にて培養した。それらをポリ−D−リジンコート96ウェル細胞培養マイクロプレートに40,000細胞/ウェルの密度で蒔き、100ng/ml NGF−7で2〜5日間分化させた。アッセイのために、培地を吸引して、細胞を洗浄緩衝液(25mM HEPES、pH7.4、150mM NaCl、1mM MgCl2、0.8mM NaH2PO4、2mM CaCl2)0.2mlで1回洗浄した。細胞は次に0.2ml Rb+ローディングバッファー(5.4mM RbCl2、5mMグルコースを含む洗浄緩衝液)を添加して、37℃にて2時間インキュベートした。付着した細胞を緩衝液(Rb+ローディングバッファーと同じだが、RbClの代わりに5.4mM KClを含有する)で3回迅速に洗浄して、細胞外Rb+を除去した。洗浄直後に、化合物を含むまたは含まない脱分極緩衝液(15mM KClを含む洗浄緩衝液)0.2mlを細胞に添加して、カリウムイオンチャネルの流出を活性化させた。室温での10分間のインキュベーション後、上清を慎重に除去および収集した。溶解緩衝液(0.1% Triton X−100を含む脱分極緩衝液)0.2mlの添加によって細胞を溶解させて、細胞溶解液も収集した。収集したサンプルをRb+含有量について原子吸光分光法(下を参照)によってただちに分析しない場合、次のRb+分析に対する負の影響を伴わずにそれらを4℃にて貯蔵した。
F=[Rb+ Sup/(Rb+ Sup+Rb+ Lys)]x100%
によって定義され、式中、Fcは脱分極緩衝液中の化合物の存在下での流出であり、Fbは基底緩衝液中での流出であり、Fsは脱分極緩衝液中での流出であり、Fcは脱分極緩衝液中の化合物の存在下での流出である。流出(F)および化合物濃度の関係をプロットして、最大Rb+流出の50%の化合物濃度であるEC50値を計算した。結果を下に示す。
MES試験
MES試験プロトコルは、University of UtahにおけるAnticonvulsant Screening Program(ASP)と併せて、National Institute of Neurological Disorders and Strokeにて確立された手順に基づいている(White,H.S.,Woodhead,J.H.,Wilcox,K.S.,Stables,J.P.,Kupferberg,HJ and Wolf,H.H.2002.“General Principles:Discovery and Preclinical Development of Antiepileptic Drugs,”in Antiepileptic Drugs,5th Edition,R.H.Levy,ed.;R.H.Mattson,B.S.Meldrum,and E.Perucca.Philadelphia,Lippincott Williams & Wilkins)。試験の目標は、PC−12細胞ベースRb+流出アッセイで活性であることが示されたいずれの化合物の生体内抗痙攣活性の迅速な同定および特性解析である。
MES試験前に、化合物を投薬したマウスを、回転棒装置(Model 755,Series 8,IITC Life Sciences,ウッドランドヒルズ、カリフォルニア州)をゆっくり回転(6rpm)させて運動障害によって定義されるような異常神経学的状態について調査する。マウスが回転棒の上で1分間の期間にわたってそのバランスを維持できないこと(3回落下=失敗)は運動障害、それゆえ急性毒性を表す。これらの測定は、MESアッセイと同じ時点に実施する。未処置正常マウスは、落下することなく少なくとも1分間にわたって回転棒の上でバランスを維持することができる。化合物の毒性中央値(TD50、動物の50%に運動障害を生じる薬物の用量)を決定する。
てんかんのマウスMESモデルにおいて、以下の化合物Aは、試験の2時間前に経口投薬された場合、2.2mg/kgのED50および1.06〜2.89mg/kgの95%信頼水準を有する、発作の有意な阻害を引き起こす。
MES試験の前に、化合物処置ラットを、オープンフィールド試験で約1分間にわたって急性毒性徴候について目視観察する。ここでラットをプレキシガラス筐体内に静かに置いて、運動失調、震え、自発運動の抑制(壁を探せないことを含む)、過敏症、探索行動の欠如および開放区域の回避の欠如を含む、毒性と一致する挙動について監視する。通例、ラットがこれらの異常挙動の2つ以上を示す場合、それらを毒性として評価する。この試験で判断されるように、運動障害は、上記ラットモデルでは観察されず、5mg/kgより大きいTD50値を生じた。
KCNQカリウムチャネルは、心臓、神経組織および多くの上皮において見出されうる。KCNQ1は、ホモ四量体カリウムチャネルを形成し得、これはアクセサリーβサブユニットであるKCNE1と結合し、IKs電流を発生する。このカリウム電流は、心臓活動電位の再分極に寄与する遅延性整流カリウム電流の遅い成分の原因である[Sanguinetti et al. Nature 384:80−83 (1996)]。KCNQ2、KCNQ3およびKCNQ5は、主に神経系で見出され、これらは数個の神経性母集団において共局在化する(colocalize)[Cooper et al. Proc. Natl. Acad. Sci. 97:4914−4919 (2000)]。これらのサブユニットは、機能性四量体カリウムチャネルを適切な組み合わせにおいて形成し得、M型カリウム電流を生じ得る。KCNQ4は、主に感覚外有毛細胞において発現することが見出されており、KCNQ1、KCNQ2およびKCNQ3チャネルによって発生される電流と同様のM型様電流を生じるが、より遅い活性化速度論を有する[Shieh et al Pharmacol. Rev. 52:557−593 (2000)]。
卵巣を摘出したメスアフリカツメガエルをeNASCO(LM00935MX,eNASCO フォートアトキンソン、ウィスコンシン州)より購入した。卵母細胞のより小規模な群への手作業による切開の後、カルシウムを含まない培養浴溶液(88mM NaCl、1mM KCl、0.82mM MgSO4、2.4mM NaHCO3、および5mM HEPES、pH7.5)の存在下での1−1/2時間にわたるコラゲナーゼタイプ2(LS004177,Worthington、レイクウッド、ニュージャージー州)を用いた酵素処理によって、卵母細胞から濾胞除去した。次に卵母細胞をcRNAの注入前に、補充培養浴溶液(88mM NaCl、1mM KCl、0.82mM MgSO4、0.9mM CaCl2、2.4mM NaHCO3、1mMピルビン酸ナトリウム、0.05mg/ml ジェネティシン、100U/mlペニシリン、0.1mg/mlストレプトマイシンおよび5mM HEPES、pH7.5)中で19℃にて24時間保持した。Nanoject微量注入器(Drummond,ブルーモール、ペンシルベニア州、米国)を使用して、約50nl cRNA(約50ng)をKCNQ1、KCNQ4、およびKCNQ5に注入した。KCNQ2およびKCNQ3の、ならびにKCNQ1およびKCNE1の同時発現では、約50nlの注入前にcRNAを等モル比で混合した。混合物は約10+10ngおよび12.5+2.5ngのcRNAをそれぞれ含有していた。KCNQ2/KCNQ3がおよびKCNQ1/KCNE1が同時発現されるときにはより大きい電流が生じるので、より少ない量が必要とされる。卵母細胞を培養浴溶液中で19℃にて保持し、溶液を毎日交換して、3〜5日後に電流を記録した。
アフリカツメガエル卵母細胞にて示されたKCNQチャネル電流は、2電極電圧クランプを使用して記録した。記録は記録溶液(96mM NaCl、2mM KCl、1mM MgCl2、1.8mM CaCl2、および5mM HEPES、pH7.5)中で室温にて、2電極電圧クランプ増幅器(OC−725C,Warner Instrument,ハムデン、コネチカット州、米国)を使用して行った。卵母細胞は、連続フローシステムに連結され、Flaming/Brownマイクロピペットプラー(Sutter Instruments Co,ナバト、カリフォルニア州、米国)でホウケイ酸ガラスから引いた電流電極および電圧クランプ電極が刺入された特注灌流チャンバに配置した。記録電極は3M KClを充填され、0.5〜2.5MΩの抵抗を有する。
すべての化合物をDMSOに溶解させて、濃貯蔵溶液を得た。電気生理学的実験の日に貯蔵溶液を解凍して、記録溶液でその最終濃度まで希釈した。最終DMSO濃度は、0.1%を決して超えなかった。化合物送達は、フローシステムに連結された特注マルチバレル装置を使用して実施した。
データはAxograph Xソフトウェア(Axograph Scientific,シドニー、オーストラリア)によって取り込み、Graph Pad Prism(GraphPad Software Inc.,カリフォルニア州、米国)を使用して解析した。
パーセンテージで表された定常状態電流の増加を薬物濃度の関数としてプロットすることによって、濃度−応答曲線を作成した。実験過程の間、各種濃度の薬物が投薬され、静止電圧は−90mVに維持され、KCNQ2/KCNQ3、KCNQ4およびKCNQ5チャネルに対してそれぞれ−60mV、−40mV、および−50mVに5秒間パルスされた。次にプロットをHill関数に適合させた:
応答=R2+(R1−R2)/[1+(C/EC50)^nH]
式中、R1は初期応答であり、R2は最大応答であり、Cは薬物濃度であり、nHは曲線の傾き(Hill係数)である。
%有効性=(C2/C1)×100%
として表され、式中、C2は追加化合物のそのEC75での存在下での記録された定常電流であり、C1はレチガビンのそのEC75での存在下での記録された定常電流である。
表1に示される化合物Aについて、KCNQ1チャネルおよびKCNQ1/NEIチャネルの阻害率は、それぞれ0%および3.5%であった。KCNQ5が、それぞれ0.35μM、0.63μMおよび0.35μMであることを決定した。したがって、化合物Aは、神経系および内耳において発現されるチャネルに対するKCNQスーパーファミリー内の選択的な効力を示すが、一方で心臓において発現されるチャネルには影響を与えない。
KCNQ2カリウムチャネルおよびhETGカリウムチャネルでトランスフェクトされた、分化型褐色細胞腫(PC−12)細胞およびCHO細胞に存在する天然に発現されたM電流を用いて、カリウムイオン流出に対する化合物Aのインビトロ活性を決定した。
Claims (2)
- 患者における、KCNQ2/3、KCNQ4、およびKCNQ5から選択される少なくとも1つのカリウムイオンチャネルの調節に影響される疾患、障害、または状態を治療または予防する方法であって、1日当たり約10mg〜約2000mgの量で、化合物A:
を患者へ投与する工程を含む、方法。 - 化合物A:
。
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US20160058895A1 (en) | 2013-04-19 | 2016-03-03 | Oslo Universitetssykehus Hf | Radiolabeled gnrh antagonists as pet imaging agents |
RU2018147263A (ru) | 2016-06-10 | 2020-07-10 | Сайфлуор Лайф Сайенсиз, Инк | Фторированные 2-амино-4-(замещенные амино)фенилкарбаматные производные |
SG11202011102TA (en) | 2018-05-11 | 2020-12-30 | Xenon Pharmaceuticals Inc | Methods for enhancing the bioavailability and exposure of a voltage-gated potassium channel opener |
TW202128627A (zh) | 2019-10-10 | 2021-08-01 | 加拿大商再諾製藥公司 | 選擇性鉀通道調節劑之固態晶型 |
PE20221766A1 (es) | 2019-11-08 | 2022-11-11 | Xenon Pharmaceuticals Inc | Metodos para el tratamiento de trastornos depresivos |
KR20220113411A (ko) * | 2019-12-06 | 2022-08-12 | 제논 파마슈티칼스 인크. | KV7 칼륨 채널 개방제(opener)의 통증 치료를 위한 용도 |
US20210213009A1 (en) * | 2019-12-13 | 2021-07-15 | Xenon Pharmaceuticals Inc. | Methods of treating pain |
CA3207191A1 (en) * | 2021-02-09 | 2022-08-18 | Simon Neil PIMSTONE | Voltage-gated potassium channel opener for use in treating anhedonia |
MA61730A1 (fr) | 2021-02-09 | 2024-01-31 | Xenon Pharmaceuticals Inc | Thérapie conjointe pour le traitement de crises épileptiques |
KR20230060487A (ko) * | 2021-10-27 | 2023-05-04 | 상하이 지멍 바이오파마 아이엔씨 | 칼륨 채널 조절제로 사용되는 화합물 및 이의 제조 및 응용 |
CN113698345B (zh) | 2021-10-27 | 2022-02-01 | 上海挚盟医药科技有限公司 | 作为钾通道调节剂的化合物及其制备和应用 |
TW202333693A (zh) * | 2021-12-31 | 2023-09-01 | 大陸商上海翰森生物醫藥科技有限公司 | 苯并哌啶衍生物調節劑、其製備方法和應用 |
CN116535353A (zh) * | 2022-01-25 | 2023-08-04 | 上海挚盟医药科技有限公司 | 作为钾通道调节剂的酰胺类化合物及其制备和应用 |
TW202404583A (zh) | 2022-06-08 | 2024-02-01 | 加拿大商再諾製藥公司 | 吡啶胺衍生物及其作為鉀通道調節劑之用途 |
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KR101841989B1 (ko) | 2018-03-26 |
EA201290748A1 (ru) | 2013-04-30 |
JP5844285B2 (ja) | 2016-01-13 |
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CA2788712C (en) | 2018-09-11 |
EP2531024A1 (en) | 2012-12-12 |
EP2531024A4 (en) | 2013-06-19 |
SG182799A1 (en) | 2012-09-27 |
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US8993593B2 (en) | 2015-03-31 |
US20110003850A1 (en) | 2011-01-06 |
WO2011094186A1 (en) | 2011-08-04 |
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