JP2005529892A - 鎮痛剤としてのデカヒドロイソキノリン−3−カルボン酸のエステルプロドラッグ - Google Patents
鎮痛剤としてのデカヒドロイソキノリン−3−カルボン酸のエステルプロドラッグ Download PDFInfo
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- JP2005529892A JP2005529892A JP2003587801A JP2003587801A JP2005529892A JP 2005529892 A JP2005529892 A JP 2005529892A JP 2003587801 A JP2003587801 A JP 2003587801A JP 2003587801 A JP2003587801 A JP 2003587801A JP 2005529892 A JP2005529892 A JP 2005529892A
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- alkyl
- ethyl
- compound
- pharmaceutically acceptable
- carboxylic acid
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- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
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- 239000012056 semi-solid material Substances 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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- 229940095064 tartrate Drugs 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000000196 tragacanth Substances 0.000 description 1
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- 229940116362 tragacanth Drugs 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
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- 239000003981 vehicle Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229940071104 xylenesulfonate Drugs 0.000 description 1
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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- A61P25/00—Drugs for disorders of the nervous system
- A61P25/04—Centrally acting analgesics, e.g. opioids
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/06—Antimigraine agents
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- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
- A61P29/02—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID] without antiinflammatory effect
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- A—HUMAN NECESSITIES
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- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing three or more hetero rings
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Abstract
Description
本発明は新規なプロドラッグ形の(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸、プロドラッグ形を含む医薬組成物、このプロドラッグ形を用いる方法に関する。
米国特許番号第5,670,516号は、特定のデカヒドロイソキノリン誘導体がAMPA受容体アンタゴニストであること、およびそれら自体が多数の異なる状態(疼痛および片頭痛を含む)の治療に有用であることを開示する。さらに、WO01/02367 A3(2001年1月11日発行)は、選択的GluR5アンタゴニストである3S,4aR,6S,8aR−6−(((4−カルボキシ)フェニル)メチル)−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸のジエステルプロドラッグ形態を開示する。
今回、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(モノ酸)の新規なモノエステルは、モノ酸自体の投与により提供されるバイオアベイラビリティと比較して顕著に改善されたモノ酸のバイオアベイラビリティを提供することを見出した。さらに、モノエステルは患者体内でモノ酸へと実質的に変換される。モノ酸は米国特許番号5,670,516(1997年9月23日発行)に開示されている。
で示される化合物またはその製薬上許容される塩を提供する。
本明細書中で用いる用語「プロドラッグ」は、カルボン酸官能性薬物のモノエステル誘導体を意味し、この誘導体は患者に投与された場合にモノ酸(薬物)へと変換される。本発明の化合物の酵素および/または化学的加水分解での切断は、親化合物であるモノカルボン酸(薬物)が遊離するような様式で生じる。
本明細書中で用いる用語「化合物B」は、6−[2−(2H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸エチルエステルを意味する。
本明細書中で用いる用語「化合物C」は、6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸2−エチル−ブチルエステルを意味する。
本明細書中で用いる用語「化合物D」は、6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸イソブチルエステルを意味する。
本明細書中で用いる用語「化合物E」は、6−[2−(2H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸3−メチル−ブチルエステルを意味する。
本明細書中で用いる用語「化合物F」は、6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸デシルエステルを意味する。
を用いて見出されるエナンチオマー過剰、または「ee」の概念である。従って、2つのエナンチオマーの最初の比が50:50(例えば、ラセミ混合物として存在する)で、最終的に50:30の比を生じるために充分なエナンチオマー濃縮が達成される場合には、第1のエナンチオマーについてのeeは25%である。しかしながら、最終的な比が90:10である場合には、第1のエナンチマーについてのeeは80%である。90%を超えるeeが好ましく、95%を超えるeeが最も好ましく、99%を超えるeeが特に最も好ましい。エナンチオマー濃縮は、通常の技術および方法、例えば、キラルカラムを用いるガスクロマトグラフィー法または高速液体クロマトグラフィー法を用いて当業者によって容易に決定される。エナンチオマー対の分離をもたらすために必要な適当なキラルカラム、溶離液および条件の選択は、十分、当業者の技術範囲内である。さらに、式Iの化合物のエナンチオマーは、当該分野で周知の一般的な技術、例えばJ.Jacquesら、「Enantiomers,Racemates,and Resolutions」、John WileyおよびSons,Inc.,1981に記載のものを用いて当業者により分割されうる。
6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸 2−エチル−ブチルエステル
エレクトロスプレー質量分析:M+1=364。
6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸イソブチルエステル
エレクトロスプレー質量分析:M+1=336。
6−[2−(2H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸 3−メチル−ブチルエステル
エレクトロスプレー質量分析:M+1=350。
6−[2−(1H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸デシルエステル
エレクトロスプレー質量分析:M+1=420。
6−[2−(2H−テトラゾール−5−イル)−エチル]−デカヒドロ−イソキノリン−3−カルボン酸エチルエステル
エレクトロスプレー質量分析:M+1=308。
以下のリストは、式Iの化合物に関する特定の置換基を幾つかの群に分けて記載したものである。このような特定の置換基を有する式Iの化合物は、本発明の特定の局面を表すことが理解される。これらの群の各々を他に提供される分類と組み合わせて本発明のさらなる特定の局面を創出し得ることも理解される。
(a)RはC1−C10アルキル、C2−C6アルケニル、C1−C6アルキル−アリール、C1−C6アルキル−(C3−C10)シクロアルキル、C1−C6アルキル−N,N−C1−C6ジアルキルアミン、C1−C6アルキル−ピロリジン、C1−C6アルキル−ピペリジン、C1−C6アルキル−モルホリンを表し、
(b)RはC1−C10アルキルまたはC2−C6アルケニルを表し、
(c)RはC1−C10アルキルまたはC1−C6アルキル−アリールを表し、
(d)RはC1−C10アルキルまたはC1−C6アルキル−(C3−C10)シクロアルキルを表し、
(e)RはC1−C10アルキルまたはC1−C6アルキル−N,N−C1−C6ジアルキルアミンを表し、
(f)RはC1−C10アルキルまたはC1−C6アルキル−ピロリジンを表し、
(g)RはC1−C10アルキルまたはC1−C6アルキル−ピペリジンを表し、
(h)RはC1−C10アルキルまたはC1−C6アルキル−モルホリンを表し、
(i)RはC1−C10アルキルを表し、
(j)Rは2−エチルブチル、イソブチル、3−メチルブチル、デシルまたはエチルを表し、または、
(k)Rはエチルを表す。
以下のラット、イヌおよびサルにおけるインビボデータは、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸のモノ酸を超える本発明のモノエステルプロドラッグのバイオアベイラビリティの改善を例示する。
ビーグル犬(雄2匹および雌1匹)に(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(10mg/Kg p.o;1mg/Kg i.v.)を経口投与した後、iv投与して経口アベイラビリティを測定した。続いて、同じ3匹のイヌにエステルプロドラッグ(例えば、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル,HCL塩)を10mg/kgで経口投与し、親化合物(酸)のバイオアベイラビリティをプロドラッグが上昇させるかどうかを決定する。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸の血漿濃度をLC/MS/MSにより決定する。
生体相(Live Phase):(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(HCl塩)を経口投与のために希水酸化ナトリウム(30mg/ml)、iv投与のために10%エタノール/水(10mg/ml)に溶解する。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル,HCL塩を経口投与のために水に溶解する(30mg/ml)。イヌは体重測定すると12〜15kgの間であった。
(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸の経口バイオアベイラビリティはイヌで18%であると決定した。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)を投与すると、バイオアベイラビリティは33.1%まで上昇した。プロドラッグ形(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)の使用により、親化合物(酸)を約2倍超えるバイオアベイラビリティの上昇を得る。
表1.ビーグル犬での化合物A(i.v.)(1mg/kg)および化合物A(10mg/kg用量)またはエチルエステルプロドラッグである化合物B(p.o.)の投薬後の薬力学的パラメーター
雄性Fischerラットに、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(30mg/Kg p.o;10mg/Kg i.v.)を経口投薬またはiv投薬のいずれかで投与して経口バイオアベイラビリティを決定する。ラットの別の群にエステルプロドラッグ(例えば、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル,HCL塩)を10mg/kg用量で経口投与してプロドラッグが親化合物(酸)のバイオアベイラビリティを上昇させるかどうかを決定する。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸の血漿濃度はLC/MS/MSにより決定する。
生体相:(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(HCl塩)を、経口投与のために希水酸化ナトリウムに溶解(15mg/ml)し、iv投与のために10%エタノール/水に溶解する(10mg/ml)。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル,HCL塩を経口投与用に水に溶解する(15mg/ml)。体重218〜244gの間のFischer雄性344ラットを利用する。血漿サンプルを0.5、1、2、4、6、8、10および24時間目(1つの時点当たりラット3匹)に回収する。
(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸に対する経口バイオアベイラビリティはラットにおいて3.6%であると決定した。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)を投与した場合、バイオアベイラビリティは17.7%まで上昇した。プロドラッグ形(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)の使用により、親化合物(酸)よりも約5倍高いバイオアベイラビリティの上昇を得た。
表2.Fischerラットにおける化合物Aまたはエステルプロドラッグである化合物Bの10mg/kgでの投薬後の化合物Aの薬物動力学的パラメーター*
雄性のサル2匹および雌性のサル2匹に、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸を経口投与し、後にivで投与して(経口:3mg/kg;iv:0.3mg/kg)、経口バイオアベイラビリティを決定する。また、続いて同じ動物に(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステルを3mg/kgで投与して、エステルプロドラッグ形が親化合物(酸)のバイオアベイラビリティを上昇させるかどうかを決定する。親化合物(酸)の血漿濃度はLC/MS/MSにより測定する。
カニクイザル4匹(2匹/性)に、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(3mg/kg)を0日目に1回経口投薬し、(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸(0.3mg/kg)を4日目に1回iv投薬し、そして(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(3mg/kg)を8日目に1回経口投薬する。経口投薬の0.5、1、2、3、4、5、6および8時間後、およびiv投薬の0.167、0.33、0.67、1、1.5、2、3および4時間後に、血液サンプルを回収する。酸およびエステル両方の投薬液剤は、0.9%塩化ナトリウム中で製造する。
サルでの(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸の経口バイオアベイラビリティは4.5%と決定した。(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)を投与すると、バイオアベイラビリティは11.4%まで上昇した。プロドラッグ形(3S,4aR,6R,8aR)−6−[2−(1(2)H−テトラゾール−5−イル)エチル−1,2,3,4,4a,5,6,7,8,8a−デカヒドロイソキノリン−3−カルボン酸エチルエステル(HCL塩)の使用により、親化合物(酸)よりも約2.5倍高いバイオアベイラビリティの上昇を得た。
表3.カニクイザルにおける化合物Aまたはエステルプロドラッグである化合物Bのi.v.およびp.o.投薬後の化合物Aの薬物動力学的パラメーター
Claims (25)
- RがC1−C10アルキルを表す、請求項1に記載の化合物。
- Rが2−エチルブチル、イソブチル、3−メチルブチル、デシルまたはエチルを表す、請求項2に記載の化合物。
- Rが2−エチルブチルを表す、請求項3に記載の化合物。
- Rがイソブチルを表す、請求項3に記載の化合物。
- Rが3−メチルブチルを表す、請求項3に記載の化合物。
- Rがデシルを表す、請求項3に記載の化合物。
- Rがエチルを表す、請求項3に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸 2−エチル−ブチルエステルまたはその製薬上許容される塩である化合物。
- 製薬上許容される塩がトリフルオロ酢酸塩である、請求項9に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸イソブチルエステルまたはその製薬上許容される塩である化合物。
- 製薬上許容される塩がトリフルオロ酢酸塩である、請求項11に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸 3−メチルブチルエステルまたは製薬上許容される塩である化合物。
- 製薬上許容される塩がトリフルオロ酢酸塩である、請求項13に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸デシルエステルまたはその製薬上許容される塩である化合物。
- 製薬上許容される塩がトリフルオロ酢酸塩である、請求項15に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸エチルエステルまたはその製薬上許容される塩である化合物。
- 製薬上許容される塩が塩酸塩である、請求項15に記載の化合物。
- (3S,4aR,6R,8aR)−6−[2−(1H−テトラゾール−5−イル)−エチル]−1,2,3,4,4a,5,6,7,8,8a−デカヒドロ−イソキノリン−3−カルボン酸エチルエステル塩酸塩一水和物である化合物。
- 請求項1に記載の化合物と、製薬上許容される希釈剤またはキャリアとを含有する医薬組成物。
- 請求項1に記載の化合物と、製薬上許容される希釈剤またはキャリアとを含有する、疼痛または片頭痛の治療のための医薬組成物。
- 疼痛の治療のための医薬の製造における、請求項1に記載の化合物の使用。
- 片頭痛の治療のための医薬の製造における、請求項1に記載の化合物の使用。
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