JP2018048093A - Morphinan derivative and a pharmaceutical use thereof - Google Patents
Morphinan derivative and a pharmaceutical use thereof Download PDFInfo
- Publication number
- JP2018048093A JP2018048093A JP2016185001A JP2016185001A JP2018048093A JP 2018048093 A JP2018048093 A JP 2018048093A JP 2016185001 A JP2016185001 A JP 2016185001A JP 2016185001 A JP2016185001 A JP 2016185001A JP 2018048093 A JP2018048093 A JP 2018048093A
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- Prior art keywords
- compound
- opioid
- brain
- added
- acid
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- INAXVFBXDYWQFN-XHSDSOJGSA-N morphinan Chemical class C1C2=CC=CC=C2[C@]23CCCC[C@H]3[C@@H]1NCC2 INAXVFBXDYWQFN-XHSDSOJGSA-N 0.000 title claims abstract description 35
- 239000002253 acid Substances 0.000 claims abstract description 28
- 150000003839 salts Chemical class 0.000 claims abstract description 27
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- 230000000052 comparative effect Effects 0.000 description 34
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Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
本発明は、モルヒナン誘導体及びその医薬用途に関する。 The present invention relates to a morphinan derivative and a pharmaceutical use thereof.
オピオイド受容体は、GTP結合タンパク質と共役する7回膜貫通型受容体であり、μ受容体、δ受容体及びκ受容体の3つのサブタイプに分類される。 Opioid receptors are seven transmembrane receptors coupled to GTP-binding proteins, and are classified into three subtypes: μ receptors, δ receptors, and κ receptors.
モルヒネやフェンタニルに代表されるオピオイドμ受容体作動薬は、強力な鎮痛作用を有するため、現在、臨床現場で鎮痛薬として広く使用されている。しかし、一方で、これらオピオイドμ受容体作動薬は、薬物依存性や呼吸抑制などの副作用を有することも知られており、このような副作用を持たない鎮痛薬の開発が望まれている。 Opioid μ receptor agonists represented by morphine and fentanyl have a strong analgesic action and are currently widely used as analgesics in clinical settings. However, on the other hand, these opioid μ receptor agonists are also known to have side effects such as drug dependence and respiratory depression, and the development of analgesics that do not have such side effects is desired.
選択的オピオイドκ受容体作動薬は、薬物依存性や呼吸抑制などのオピオイドμ受容体作動薬の副作用のない、強力な鎮痛薬となり得るとして期待されていた。しかし、選択的オピオイドκ受容体作動薬は、その鎮痛作用と、鎮静や不快感などの副作用との分離が困難であることなどから、現時点では、選択的オピオイドκ受容体作動薬は鎮痛薬としては使用されていない。唯一、医薬として使用されている選択的オピオイドκ受容体作動薬である、下記式で示されるナルフラフィン塩酸塩(特許文献1)は、腎透析や肝障害に伴う難治性そう痒症の治療薬として使用されている。
オピオイドκ受容体は、脳内、脊髄内、一次感覚求心路の中枢及び末梢、並びに、免疫細胞上など、全身に存在している。近年、末梢に存在するオピオイドκ受容体は、鎮静や不快感などの副作用と関連がないこと、また、その活性化により鎮痛作用を発揮することが示された(非特許文献1及び2)。そのため、オピオイドκ受容体作動薬であっても、中枢移行性を高度に抑制した末梢型の選択的オピオイドκ受容体作動薬であれば、鎮静や不快感などの副作用の低減された鎮痛薬となり得るとして期待できる。 Opioid kappa receptors are present throughout the body, such as in the brain, in the spinal cord, in the center and periphery of the primary sensory afferents, and on immune cells. In recent years, it has been shown that opioid κ receptors present in the periphery are not related to side effects such as sedation and discomfort, and exert an analgesic action by activation thereof (Non-patent Documents 1 and 2). Therefore, even if it is an opioid κ receptor agonist, if it is a peripheral selective opioid κ receptor agonist with a high degree of central migration, it will be an analgesic with reduced side effects such as sedation and discomfort. You can expect as you get.
現在、末梢型の選択的オピオイドκ受容体作動薬として、非モルヒナン誘導体であるアシマドリン(特許文献2)やペプチド性のCR−845(特許文献3)などが知られている。 Currently, as a peripheral selective opioid κ receptor agonist, non-morphinan derivative asimadrine (Patent Document 2), peptide CR-845 (Patent Document 3), and the like are known.
一方、10位が水酸基で置換されたモルヒナン誘導体として、10α−ヒドロキシ−ナルフラフィンが知られている(非特許文献3)。 On the other hand, as a morphinan derivative substituted at the 10-position with a hydroxyl group, 10α-hydroxy-nalfurafine is known (Non-patent Document 3).
しかしながら、10α−ヒドロキシ−ナルフラフィンがκ受容体作動性を有することはもとより、末梢型のオピオイドκ受容体作動性を有することについては一切知られていない。また、末梢型の選択的オピオイドκ受容体作動性を有するモルヒナン誘導体も一切知られていない。 However, it is not known at all that 10α-hydroxy-nalfurafine has a kappa receptor agonist or a peripheral opioid κ receptor agonist. In addition, no morphinan derivatives having peripheral type selective opioid κ receptor agonist activity are known.
そこで本発明は、末梢型の選択的オピオイドκ受容体作動性を有する化合物を提供することを目的とする。 Thus, an object of the present invention is to provide a compound having peripheral type selective opioid κ receptor agonist activity.
本発明者らは、上記の目的を達成するため鋭意研究を重ねた結果、末梢型の選択的オピオイドκ受容体作動性を有するモルヒナン誘導体又はその薬理学的に許容される酸付加塩を見出し、本発明を完成させるに至った。 As a result of intensive studies to achieve the above object, the present inventors have found a morphinan derivative having peripheral type selective opioid κ receptor agonist or a pharmacologically acceptable acid addition salt thereof, The present invention has been completed.
すなわち、本発明は、下記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を提供する。
また本発明は、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を有効成分として含有する医薬を提供する。 The present invention also provides a medicament comprising a morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof as an active ingredient.
また本発明は、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を有効成分として含有する、末梢型かつ選択的なオピオイドκ受容体作動薬を提供する。 The present invention also provides a peripheral and selective opioid κ receptor comprising, as an active ingredient, a morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof. Provide body agonists.
本発明のモルヒナン誘導体若しくはその薬理学的に許容される酸付加塩は、末梢型の選択的オピオイドκ受容体作動性を有しており、オピオイドμ受容体作動性に基づく副作用(薬物依存性、呼吸抑制)や中枢型のオピオイドκ受容体作動性に基づく副作用(鎮静、不快感)が低減された医薬として好適に使用できる。 The morphinan derivative of the present invention or a pharmacologically acceptable acid addition salt thereof has peripheral type selective opioid κ receptor agonist activity, and has side effects (drug dependency, opioid μ receptor agonist activity). It can be suitably used as a medicament with reduced side effects (sedation, discomfort) based on respiratory depression) and central opioid κ receptor agonism.
本発明のモルヒナン誘導体は、下記の式(I)又は式(II)で示されることを特徴としている。
また、本発明の医薬の有効成分であるモルヒナン誘導体は、下記の式(I)又は式(II)で示されることを特徴としている。
また、本発明の、末梢型かつ選択的なオピオイドκ受容体作動薬、の有効成分であるモルヒナン誘導体は、下記の式(I)又は式(II)で示されることを特徴としている。
上記の式(I)又は式(II)で示されるモルヒナン誘導体の薬理学的に許容される酸付加塩としては、例えば、塩酸塩、硫酸塩、硝酸塩、臭化水素酸塩、ヨウ化水素酸塩若しくはリン酸塩等の無機酸塩、酢酸塩、乳酸塩、クエン酸塩、シュウ酸塩、グルタル酸塩、リンゴ酸塩、酒石酸塩、フマル酸塩、マンデル酸塩、マレイン酸塩、安息香酸塩若しくはフタル酸塩等の有機カルボン酸塩又はメタンスルホン酸塩、エタンスルホン酸塩、ベンゼンスルホン酸塩、p−トルエンスルホン酸塩若しくはカンファースルホン酸塩等の有機スルホン酸塩等が挙げられるが、塩酸塩、臭化水素酸塩、リン酸塩、酒石酸塩又はメタンスルホン酸塩が好ましく、塩酸塩、酒石酸塩又はメタンスルホン酸塩がより好ましい。 Examples of the pharmacologically acceptable acid addition salt of the morphinan derivative represented by the above formula (I) or formula (II) include hydrochloride, sulfate, nitrate, hydrobromide, hydroiodic acid. Inorganic acid salts such as salt or phosphate, acetate, lactate, citrate, oxalate, glutarate, malate, tartrate, fumarate, mandelate, maleate, benzoic acid Examples include organic carboxylates such as salts or phthalates, or organic sulfonates such as methanesulfonate, ethanesulfonate, benzenesulfonate, p-toluenesulfonate, and camphorsulfonate. Hydrochloride, hydrobromide, phosphate, tartrate or methanesulfonate are preferred, and hydrochloride, tartrate or methanesulfonate are more preferred.
上記の式(I)又は式(II)で示されるモルヒナン誘導体は、その基本骨格や置換基の種類に由来する特徴に基づいた適切な方法で製造することができる。なお、この製造に使用する出発物質及び試薬は、一般に購入することができる。また、参考例1で使用した出発物質の合成法については、国際公開第2004/033457号に開示されている。 The morphinan derivative represented by the above formula (I) or formula (II) can be produced by an appropriate method based on characteristics derived from the basic skeleton and the type of substituent. The starting materials and reagents used for this production can generally be purchased. The method for synthesizing the starting material used in Reference Example 1 is disclosed in International Publication No. 2004/033457.
上記の式(I)又は式(II)で示されるモルヒナン誘導体の塩化反応に用いる酸としては、例えば、塩酸、硫酸、硝酸、臭化水素酸、ヨウ化水素酸若しくはリン酸等の無機酸、酢酸、乳酸、クエン酸、シュウ酸、グルタル酸、リンゴ酸、酒石酸、フマル酸、マンデル酸、マレイン酸、安息香酸若しくはフタル酸等の有機カルボン酸又はメタンスルホン酸、エタンスルホン酸、ベンゼンスルホン酸、p−トルエンスルホン酸若しくはカンファースルホン酸等の有機スルホン酸が挙げられる。 Examples of the acid used for the chlorination reaction of the morphinan derivative represented by the above formula (I) or formula (II) include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, hydrobromic acid, hydroiodic acid or phosphoric acid, Organic carboxylic acids such as acetic acid, lactic acid, citric acid, oxalic acid, glutaric acid, malic acid, tartaric acid, fumaric acid, mandelic acid, maleic acid, benzoic acid or phthalic acid, or methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, Examples thereof include organic sulfonic acids such as p-toluenesulfonic acid and camphorsulfonic acid.
塩化反応は、一般に溶媒中で行われ、反応を阻害しない溶媒が適宜選択される。このような溶媒としては、例えば、メタノール、エタノール若しくはイソプロパノール等の脂肪族アルコール類、ジエチルエーテル、テトラヒドロフラン、1,4−ジオキサン若しくはエチレングリコールジメチルエーテル等のエーテル類、N,N−ジメチルホルムアミド若しくはN−メチルピロリドン等のアミド類、ジメチルスルホキシド等のスルホキシド類、アセトニトリル若しくはプロピオニトリル等の脂肪族ニトリル類、アセトン若しくは2−ブタノン等のケトン類、酢酸メチル、酢酸エチル若しくは酢酸n−ブチル等のエステル類又は水が挙げられ、これらの混合溶媒を用いてもよい。 The chlorination reaction is generally performed in a solvent, and a solvent that does not inhibit the reaction is appropriately selected. Examples of such solvents include aliphatic alcohols such as methanol, ethanol or isopropanol, ethers such as diethyl ether, tetrahydrofuran, 1,4-dioxane or ethylene glycol dimethyl ether, N, N-dimethylformamide or N-methyl. Amides such as pyrrolidone, sulfoxides such as dimethyl sulfoxide, aliphatic nitriles such as acetonitrile or propionitrile, ketones such as acetone or 2-butanone, esters such as methyl acetate, ethyl acetate or n-butyl acetate, or Water may be mentioned, and a mixed solvent thereof may be used.
上記の式(I)又は式(II)で示されるモルヒナン誘導体及びその薬理学的に許容される酸付加塩は、末梢型の選択的オピオイドκ受容体作動性を有するため、オピオイドμ受容体作動性に基づく薬物依存性や呼吸抑制、及び、中枢型のオピオイドκ受容体作動性に基づく鎮静や不快感などの副作用が低減された、医薬、特に鎮痛薬として用いることができる。 Since the morphinan derivative represented by the above formula (I) or formula (II) and a pharmacologically acceptable acid addition salt thereof have peripheral type opioid κ receptor agonist activity, opioid μ receptor operation It can be used as a medicine, particularly an analgesic, in which side effects such as drug dependence and respiratory depression based on sex and sedation and discomfort based on central opioid κ receptor agonists are reduced.
選択的オピオイドκ受容体作動性とは、κ受容体作動性に対するμ受容体作動性の比(μ受容体作動性/κ受容体作動性比)が100倍以上であることを意味する。上記の式(I)又は式(II)で示されるモルヒナン誘導体及びその薬理学的に許容される酸付加塩が、選択的κ受容体作動性を有することは、例えば、ヒトオピオイドκ受容体及びヒトオピオイドμ受容体を安定発現した細胞を用いて、これら受容体に対する作動性(例えば、Forskolin誘発cAMP産生に対する抑制作用)を測定することで評価できる。EC50(μ)値に対するEC50(κ)値(EC50(μ)値/EC50(κ)値)が100倍以上であれば、選択的オピオイドκ受容体作動性を有するといえる。 Selective opioid κ receptor agonist means that the ratio of μ receptor agonist to κ receptor agonist (μ receptor agonist / κ receptor agonist ratio) is 100 times or more. The morphinan derivative represented by the above formula (I) or formula (II) and a pharmacologically acceptable acid addition salt thereof have selective κ receptor agonist activity, for example, human opioid κ receptor and It can be evaluated by measuring the operability of these receptors (for example, the inhibitory effect on Forskolin-induced cAMP production) using cells stably expressing human opioid μ receptors. If the EC 50 (κ) value relative to the EC 50 (μ) value (EC 50 (μ) value / EC 50 (κ) value) is 100 times or more, it can be said that it has selective opioid κ receptor agonist activity.
末梢型とは、薬物投与後の末梢の薬物濃度に対する中枢の薬物濃度の比(中枢濃度/末梢濃度)が0.2以下であることを意味する。上記の式(I)又は式(II)で示されるモルヒナン誘導体及びその薬理学的に許容される酸付加塩が、末梢型であることは、例えば、マウスに静脈内投与した後の血漿中濃度及び脳中濃度を測定することで評価できる。血漿中濃度に対する脳中濃度の比(脳中濃度/血漿中濃度)が0.2以下であれば、末梢型であるといえる。 The peripheral type means that the ratio of the central drug concentration to the peripheral drug concentration after drug administration (central concentration / peripheral concentration) is 0.2 or less. The peripheral form of the morphinan derivative represented by the above formula (I) or formula (II) and its pharmacologically acceptable acid addition salt is, for example, a plasma concentration after intravenous administration to mice. It can be evaluated by measuring the brain concentration. If the ratio of the brain concentration to the plasma concentration (brain concentration / plasma concentration) is 0.2 or less, it can be said to be a peripheral type.
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩の優れた鎮痛作用は、適切な動物モデルを用いて評価することができる。鎮痛作用を評価するための適切な動物モデルとしては、例えば、マウス酢酸ライジングモデル(Academic Press、1977年、第6章、p.83−99)、ラットホルマリンテスト(Pain、1992年、第51巻、p.5−17)、ラットカラゲニン誘発炎症モデル(Japanese Jounal of Pharmacology、1970年、第20巻、p.337−348)、急性疼痛のためのラットホットプレートテスト(Journal of Pharmacology and Experimental Therapeutics、1975年、第192巻、p.497−505)又はテールフリックテスト(Journal of Pharmaceutical Sciences、1962年、第51巻、p.185−186)が挙げられる。 The excellent analgesic action of the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof can be evaluated using an appropriate animal model. Suitable animal models for evaluating analgesic action include, for example, mouse acetate rising model (Academic Press, 1977, Chapter 6, p. 83-99), rat formalin test (Pain, 1992, Vol. 51). , P. 5-17), rat carrageenin-induced inflammation model (Japan Journal of Pharmacology, 1970, 20, 337-348), rat hot plate test for acute pain (Journal of Pharmacology and Experimental Thermal, 1975, Vol. 192, pp. 497-505) or Tail Flick Test (Journal of Pharmaceutical Sciences, 1962, No. 5) Winding, p.185-186), and the like.
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を有効成分として含有する医薬は、哺乳動物(例えば、マウス、ラット、ハムスター、ウサギ、ネコ、イヌ、ウシ、ヒツジ、サル又はヒト)、特にヒトに対して投与した場合に、優れた鎮痛作用を示す。 A medicament containing a morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof as an active ingredient is a mammal (eg, mouse, rat, hamster, rabbit). , Cats, dogs, cows, sheep, monkeys or humans), particularly when administered to humans, it exhibits excellent analgesic activity.
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩の投与形態としては、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩をそのまま又は医薬として許容される担体を配合して、経口的又は非経口的に投与することができる。 As a dosage form of the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof, represented by the above formula (I) or formula (II), The morphinan derivative or a pharmacologically acceptable acid addition salt thereof can be administered orally or parenterally as it is or in combination with a pharmaceutically acceptable carrier.
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を含有する医薬を、経口投与する場合の剤形としては、例えば、錠剤(糖衣錠及びフィルムコーティング錠を含む)、丸剤、顆粒剤、散剤、カプセル剤(ソフトカプセル剤及びマイクロカプセル剤を含む)、シロップ剤、乳剤又は懸濁剤が挙げられ、また、非経口投与する場合の剤形としては、例えば、注射剤、注入剤、点滴剤又は坐剤が挙げられる。また、適当な基剤(例えば、酪酸の重合体、グリコール酸の重合体、酪酸−グリコール酸の共重合体、酪酸の重合体とグリコール酸の重合体との混合物又はポリグリセロール脂肪酸エステル)と組み合わせて、徐放性製剤とすることも有効である。 As a dosage form when orally administering a pharmaceutical containing the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof, for example, a tablet (sugar-coated tablet) And film-coated tablets), pills, granules, powders, capsules (including soft capsules and microcapsules), syrups, emulsions or suspensions, and agents for parenteral administration Examples of the form include injections, infusions, drops, and suppositories. Also, combined with an appropriate base (for example, a polymer of butyric acid, a polymer of glycolic acid, a copolymer of butyric acid-glycolic acid, a mixture of a polymer of butyric acid and a polymer of glycolic acid, or a polyglycerol fatty acid ester) It is also effective to make a sustained-release preparation.
上記の剤形の製剤の調製は、製剤分野で一般的に用いられている公知の製造方法に従って行うことができる。この場合、必要に応じて、製剤分野において一般的に用いられる賦形剤、結合剤、滑沢剤、崩壊剤、甘味剤、界面活性剤、懸濁化剤及び/又は乳化剤等を含有させて製造することができる。 The preparation of the above dosage form can be prepared according to a known production method generally used in the pharmaceutical field. In this case, excipients, binders, lubricants, disintegrants, sweeteners, surfactants, suspending agents and / or emulsifiers and the like generally used in the pharmaceutical field are included as necessary. Can be manufactured.
上記の錠剤の調製は、賦形剤、結合剤、崩壊剤及び/又は滑沢剤等を含有させて行うことができ、上記の丸剤及び上記の顆粒剤の調製は、賦形剤、結合剤及び/又は崩壊剤等を含有させて行うことができる。また、上記の散剤及び上記のカプセル剤の調製は賦形剤等を、上記のシロップ剤の調製は甘味剤等を、上記の乳剤又は上記の懸濁剤の調製は界面活性剤、懸濁化剤及び/又は乳化剤等を、含有させて行うことができる。 The above tablet can be prepared by adding an excipient, a binder, a disintegrant and / or a lubricant, and the pill and the above granule can be prepared by adding an excipient, a binder. It can be carried out by containing an agent and / or a disintegrant. In addition, the above powders and capsules are prepared with excipients, the syrup is prepared with sweeteners, the emulsion or the suspension is prepared with surfactants and suspended. An agent and / or an emulsifier can be contained.
上記の賦形剤としては、例えば、乳糖、ブドウ糖、デンプン、ショ糖、微結晶セルロース、カンゾウ末、マンニトール、炭酸水素ナトリウム、リン酸カルシウム又は硫酸カルシウムが挙げられる。 Examples of the excipient include lactose, glucose, starch, sucrose, microcrystalline cellulose, licorice powder, mannitol, sodium bicarbonate, calcium phosphate or calcium sulfate.
上記の結合剤としては、例えば、デンプンのり液、アラビアゴム液、ゼラチン液、トラガント液、カルボキシメチルセルロース液、アルギン酸ナトリウム液又はグリセリンが挙げられる。 Examples of the binder include starch paste, gum arabic solution, gelatin solution, tragacanth solution, carboxymethyl cellulose solution, sodium alginate solution, and glycerin.
上記の崩壊剤としては、例えば、デンプン又は炭酸カルシウムが挙げられる。 Examples of the disintegrant include starch or calcium carbonate.
上記の滑沢剤としては、例えば、ステアリン酸マグネシウム、ステアリン酸、ステアリン酸カルシウム又は精製タルクが挙げられる。 Examples of the lubricant include magnesium stearate, stearic acid, calcium stearate, and purified talc.
上記の甘味剤としては、例えば、ブドウ糖、果糖、転化糖、ソルビトール、キシリトール、グリセリン又は単シロップが挙げられる。 Examples of the sweetener include glucose, fructose, invert sugar, sorbitol, xylitol, glycerin, and simple syrup.
上記の界面活性剤としては、例えば、ラウリル硫酸ナトリウム、ポリソルベート80、ソルビタンモノ脂肪酸エステル又はステアリン酸ポリオキシル40が挙げられる。 Examples of the surfactant include sodium lauryl sulfate, polysorbate 80, sorbitan monofatty acid ester, and polyoxyl 40 stearate.
上記の懸濁化剤としては、例えば、アラビアゴム、アルギン酸ナトリウム、カルボキシメチルセルロースナトリウム、メチルセルロース又はベントナイトが挙げられる。 Examples of the suspending agent include gum arabic, sodium alginate, sodium carboxymethyl cellulose, methyl cellulose, and bentonite.
上記の乳化剤としては、例えば、アラビアゴム、トラガント、ゼラチン又はポリソルベート80が挙げられる。 Examples of the emulsifier include gum arabic, tragacanth, gelatin, and polysorbate 80.
さらに、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を含有する医薬を、上記の剤形に調製する場合には、製剤分野において一般的に用いられる着色剤、保存剤、芳香剤、矯味剤、安定剤及び/又は粘稠剤等を添加することができる。 Furthermore, when a medicament containing the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof is prepared in the above dosage form, the pharmaceutical field Coloring agents, preservatives, fragrances, flavoring agents, stabilizers and / or thickeners that are generally used in can be added.
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩を含有する医薬の1日あたりの投与量は、患者の状態や体重、化合物の種類及び投与経路等によって異なるが、例えば、経口投与する場合には成人(体重約60kg)であれば0.01mg〜1000mgの範囲で、1〜3回に分けて投与することが好ましく、非経口投与する場合には、注射剤であれば体重1kgあたり0.001mg〜100mgの範囲で静脈注射により投与することが好ましい。 The daily dose of the pharmaceutical containing the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof depends on the patient's condition, body weight, compound Depending on the type and route of administration, for example, when administered orally, it is preferably administered in the range of 0.01 mg to 1000 mg in the range of 0.01 mg to 1000 mg for parenteral administration, parenterally. In the case of administration, if it is an injection, it is preferably administered by intravenous injection in the range of 0.001 mg to 100 mg per kg body weight.
以下、参考例、実施例及び比較例を示して本発明を具体的に詳述するが、本発明はこれらに限定されるものではない。 Hereinafter, although a reference example, an Example, and a comparative example are shown and this invention is explained in full detail, this invention is not limited to these.
NMRデータ中に示されている括弧内の溶媒名は、測定に使用した溶媒を示している。 The solvent name in parentheses shown in the NMR data indicates the solvent used for the measurement.
400MHz NMRスペクトルは、日本電子製JNM−ECS400型核磁気共鳴装置を用いて測定した。ケミカルシフトはテトラメチルシランを基準として、δ(単位:ppm)で表し、シグナルはそれぞれs(一重線)、d(二重線)、t(三重線)、q(四重線)、m(多重線)、br(幅広)又はそれらの組合せで示した。IRスペクトルは、日本分光社製FT/IR−410を、ESI−MSスペクトルは、Waters社製Micromass ZQ2K又はAgilentTechnology社製1200LC/MSDを用いて測定した。溶媒は全て市販のものを用いた。フラッシュクロマトグラフィーは山善社製YFLC W−prep2XYを用いた。 The 400 MHz NMR spectrum was measured using a JNM-ECS400 nuclear magnetic resonance apparatus manufactured by JEOL. The chemical shift is represented by δ (unit: ppm) based on tetramethylsilane, and the signals are s (single line), d (double line), t (triple line), q (quadruple line), m ( Multiple lines), br (wide), or a combination thereof. The IR spectrum was measured using FT / IR-410 manufactured by JASCO Corporation, and the ESI-MS spectrum was measured using Micromass ZQ2K manufactured by Waters or 1200LC / MSD manufactured by Agilent Technology. All solvents were commercially available. For flash chromatography, YFLC W-prep2XY manufactured by Yamazen Co., Ltd. was used.
参考例、実施例及び比較例で使用する水は蒸留水を意味する。 The water used in Reference Examples, Examples and Comparative Examples means distilled water.
(参考例1) 2−((4R,4aS,7R,7aR,12bS)−9−(ベンジルオキシ)−3−(シクロプロピルメチル)−4a−ヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)イソインドリン−1,3−ジオンの合成:
1H-NMR (CDCl3) δ: 7.84 (2H, dd, J= 5.4, 3.2 Hz), 7.71 (2H, dd, J= 5.4, 2.7 Hz), 7.43 (2H, d, J= 7.2 Hz), 7.34 (2H, t, J = 7.2 Hz), 7.29-7.25 (1H, m), 6.76 (1H, d, J= 8.2 Hz), 6.61 (1H, d, J = 8.2 Hz), 5.28 (1H, d, J = 8.2 Hz), 5.20-5.08 (3H, m), 4.20-4.13 (1H, m), 3.12 (1H, d, J = 5.4 Hz), 3.05 (1H, d, J= 18.6 Hz), 2.84-2.73 (1H, m), 2.69-2.61 (2H, m), 2.40-2.32 (3H, m), 2.11 (1H, td, J = 12.1, 3.9 Hz), 1.74-1.69 (1H, m), 1.57 (1H, dd, J= 13.1, 3.2 Hz), 1.52-1.46 (2H, m), 0.89-0.81 (1H, m), 0.56-0.51 (2H, m), 0.15-0.11 (2H, m).
Reference Example 1 2-((4R, 4aS, 7R, 7aR, 12bS) -9- (benzyloxy) -3- (cyclopropylmethyl) -4a-hydroxy-2,3,4,4a, 5,6 , 7,7a-Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) isoindoline-1,3-dione:
1 H-NMR (CDCl 3 ) δ: 7.84 (2H, dd, J = 5.4, 3.2 Hz), 7.71 (2H, dd, J = 5.4, 2.7 Hz), 7.43 (2H, d, J = 7.2 Hz), 7.34 (2H, t, J = 7.2 Hz), 7.29-7.25 (1H, m), 6.76 (1H, d, J = 8.2 Hz), 6.61 (1H, d, J = 8.2 Hz), 5.28 (1H, d , J = 8.2 Hz), 5.20-5.08 (3H, m), 4.20-4.13 (1H, m), 3.12 (1H, d, J = 5.4 Hz), 3.05 (1H, d, J = 18.6 Hz), 2.84 -2.73 (1H, m), 2.69-2.61 (2H, m), 2.40-2.32 (3H, m), 2.11 (1H, td, J = 12.1, 3.9 Hz), 1.74-1.69 (1H, m), 1.57 (1H, dd, J = 13.1, 3.2 Hz), 1.52-1.46 (2H, m), 0.89-0.81 (1H, m), 0.56-0.51 (2H, m), 0.15-0.11 (2H, m).
(参考例2) 2−((4R,4aS,7R,7aR,12bS,13S)−9−(ベンジルオキシ)−3−(シクロプロピルメチル)−4a,13−ジヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)イソインドリン−1,3−ジオンの合成:
1H-NMR (CDCl3) δ: 7.85 (2H, dd, J= 5.4, 2.7 Hz), 7.72 (2H, dd, J= 5.4, 3.2 Hz), 7.44 (2H, d, J= 6.8 Hz), 7.35 (2H, t, J = 7.2 Hz), 7.30-7.27 (1H, m), 6.92 (1H, d, J= 8.2 Hz), 6.88 (1H, d, J = 8.6 Hz), 5.30 (1H, d, J = 8.2 Hz), 5.22 (1H, d, J = 11.8 Hz), 5.14 (1H, d, J = 11.8 Hz), 5.02-4.99 (2H, m), 4.21-4.14 (1H, m), 3.17 (1H, s), 2.78 (1H, ddd, J = 24.8, 13.3, 4.6 Hz), 2.66 (1H, dd, J = 12.2, 5.0 Hz), 2.56 (1H, dd, J = 12.7, 6.8 Hz), 2.48 (1H, dd, J = 12.7, 6.3 Hz), 2.36 (1H, td, J = 12.7, 5.4 Hz), 2.06-1.99 (1H, m), 1.90-1.80 (2H, m), 1.62 (1H, m), 1.53-1.46 (2H, m), 0.96-0.87 (1H, m), 0.63-0.53 (2H, m), 0.24-0.12 (2H, m).
Reference Example 2 2-((4R, 4aS, 7R, 7aR, 12bS, 13S) -9- (Benzyloxy) -3- (cyclopropylmethyl) -4a, 13-dihydroxy-2,3,4,4a , 5,6,7,7a-Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) isoindoline-1,3-dione:
1 H-NMR (CDCl 3 ) δ: 7.85 (2H, dd, J = 5.4, 2.7 Hz), 7.72 (2H, dd, J = 5.4, 3.2 Hz), 7.44 (2H, d, J = 6.8 Hz), 7.35 (2H, t, J = 7.2 Hz), 7.30-7.27 (1H, m), 6.92 (1H, d, J = 8.2 Hz), 6.88 (1H, d, J = 8.6 Hz), 5.30 (1H, d , J = 8.2 Hz), 5.22 (1H, d, J = 11.8 Hz), 5.14 (1H, d, J = 11.8 Hz), 5.02-4.99 (2H, m), 4.21-4.14 (1H, m), 3.17 (1H, s), 2.78 (1H, ddd, J = 24.8, 13.3, 4.6 Hz), 2.66 (1H, dd, J = 12.2, 5.0 Hz), 2.56 (1H, dd, J = 12.7, 6.8 Hz), 2.48 (1H, dd, J = 12.7, 6.3 Hz), 2.36 (1H, td, J = 12.7, 5.4 Hz), 2.06-1.99 (1H, m), 1.90-1.80 (2H, m), 1.62 (1H, m), 1.53-1.46 (2H, m), 0.96-0.87 (1H, m), 0.63-0.53 (2H, m), 0.24-0.12 (2H, m).
(参考例3) (4R,4aS,7R,7aR,12bS,13S)−7−アミノ−9−(ベンジルオキシ)−3−(シクロプロピルメチル)−1,2,3,4,5,6,7,7a−オクタヒドロ−4aH−4,12−メタノベンゾフロ[3,2−e]イソキノリン−4a,13−ジオールの合成:
1H-NMR (CDCl3) δ: 7.44-7.41 (2H, m), 7.36 (2H, t, J = 7.2 Hz), 7.32-7.28 (1H, m), 6.88-6.83 (2H, m), 5.23 (1H, d, J = 12.2 Hz), 5.18 (1H, d, J = 12.2 Hz), 4.94 (1H, s), 4.31 (1H, d, J = 7.2 Hz), 3.10 (1H, s), 2.63-2.51 (3H, m), 2.43 (1H, dd, J= 12.7, 6.3 Hz), 2.20 (1H, td, J= 12.7, 5.4 Hz), 1.98 (1H, td, J= 12.1, 3.9 Hz), 1.82-1.74 (1H, m), 1.68-1.64 (2H, m), 1.56-1.50 (1H, m), 1.44 (1H, dd, J = 12.7, 2.7 Hz), 0.94-0.84 (1H, m), 0.60-0.51 (2H, m), 0.21-0.10 (2H, m).
Reference Example 3 (4R, 4aS, 7R, 7aR, 12bS, 13S) -7-amino-9- (benzyloxy) -3- (cyclopropylmethyl) -1,2,3,4,5,6 Synthesis of 7,7a-octahydro-4aH-4,12-methanobenzofuro [3,2-e] isoquinoline-4a, 13-diol:
1 H-NMR (CDCl 3 ) δ: 7.44-7.41 (2H, m), 7.36 (2H, t, J = 7.2 Hz), 7.32-7.28 (1H, m), 6.88-6.83 (2H, m), 5.23 (1H, d, J = 12.2 Hz), 5.18 (1H, d, J = 12.2 Hz), 4.94 (1H, s), 4.31 (1H, d, J = 7.2 Hz), 3.10 (1H, s), 2.63 -2.51 (3H, m), 2.43 (1H, dd, J = 12.7, 6.3 Hz), 2.20 (1H, td, J = 12.7, 5.4 Hz), 1.98 (1H, td, J = 12.1, 3.9 Hz), 1.82-1.74 (1H, m), 1.68-1.64 (2H, m), 1.56-1.50 (1H, m), 1.44 (1H, dd, J = 12.7, 2.7 Hz), 0.94-0.84 (1H, m), 0.60-0.51 (2H, m), 0.21-0.10 (2H, m).
(参考例4) (4R,4aS,7R,7aR,12bS,13S)−7−(ベンジル(メチル)アミノ)−9−(ベンジルオキシ)−3−(シクロプロピルメチル)−1,2,3,4,5,6,7,7a−オクタヒドロ−4aH−4,12−メタノベンゾフロ[3,2−e]イソキノリン−4a,13−ジオールの合成:
1H-NMR (CDCl3) δ: 7.45 (2H, d, J= 6.8 Hz), 7.40-7.29 (5H, m), 7.27-7.23 (2H, m), 7.21-7.16 (1H, m), 6.87-6.82 (2H, m), 5.27-5.21 (2H, m), 4.96 (1H, s), 4.94 (1H, d, J = 5.4 Hz), 4.78 (1H, d, J= 8.2 Hz), 3.81 (1H, d, J = 13.6 Hz), 3.71 (1H, d, J = 13.6 Hz), 3.11 (1H, s), 2.67-2.59 (2H, m), 2.53 (1H, dd, J = 12.7, 6.8 Hz), 2.46 (1H, dd, J = 12.7, 6.8 Hz), 2.35 (3H, s), 2.23 (1H, td, J = 12.7, 5.4 Hz), 2.07-1.96 (2H, m), 1.76-1.70 (1H, m), 1.65-1.59 (2H, m), 1.53 (1H, d, J = 5.4 Hz), 1.49 (1H, dd, J = 13.1, 2.7 Hz), 0.95-0.85 (1H, m), 0.62-0.52 (2H, m), 0.23-0.11 (2H, m).
Reference Example 4 (4R, 4aS, 7R, 7aR, 12bS, 13S) -7- (benzyl (methyl) amino) -9- (benzyloxy) -3- (cyclopropylmethyl) -1,2,3 Synthesis of 4,5,6,7,7a-octahydro-4aH-4,12-methanobenzofuro [3,2-e] isoquinoline-4a, 13-diol:
1 H-NMR (CDCl 3 ) δ: 7.45 (2H, d, J = 6.8 Hz), 7.40-7.29 (5H, m), 7.27-7.23 (2H, m), 7.21-7.16 (1H, m), 6.87 -6.82 (2H, m), 5.27-5.21 (2H, m), 4.96 (1H, s), 4.94 (1H, d, J = 5.4 Hz), 4.78 (1H, d, J = 8.2 Hz), 3.81 ( 1H, d, J = 13.6 Hz), 3.71 (1H, d, J = 13.6 Hz), 3.11 (1H, s), 2.67-2.59 (2H, m), 2.53 (1H, dd, J = 12.7, 6.8 Hz ), 2.46 (1H, dd, J = 12.7, 6.8 Hz), 2.35 (3H, s), 2.23 (1H, td, J = 12.7, 5.4 Hz), 2.07-1.96 (2H, m), 1.76-1.70 ( 1H, m), 1.65-1.59 (2H, m), 1.53 (1H, d, J = 5.4 Hz), 1.49 (1H, dd, J = 13.1, 2.7 Hz), 0.95-0.85 (1H, m), 0.62 -0.52 (2H, m), 0.23-0.11 (2H, m).
(参考例5) (4R,4aS,7R,7aR,12bS,13S)−3−(シクロプロピルメチル)−7−(メチルアミノ)−1,2,3,4,5,6,7,7a−オクタヒドロ−4aH−4,12−メタノベンゾフロ[3,2−e]イソキノリン−4a,9,13−トリオール2塩酸塩の合成:
1H-NMR (CD3OD) δ: 7.03 (1H, d, J= 8.6 Hz), 6.88 (1H, d, J = 8.2 Hz), 5.49 (1H, s), 5.29 (1H, s), 4.81 (1H, d, J = 7.2 Hz), 3.86 (1H, s), 3.49-3.42 (1H, m), 3.34 (2H, s), 3.08-3.02 (2H, m), 2.95 (1H, dd, J= 13.8, 7.5 Hz), 2.82 (3H, s), 2.66-2.55 (2H, m), 2.06-1.98 (2H, m), 1.94-1.83 (2H, m), 1.69-1.63 (1H, m), 1.23-1.16 (1H, m), 0.91-0.74 (2H, m), 0.62-0.53 (2H, m).
Reference Example 5 (4R, 4aS, 7R, 7aR, 12bS, 13S) -3- (cyclopropylmethyl) -7- (methylamino) -1,2,3,4,5,6,7,7a- Synthesis of Octahydro-4aH-4,12-methanobenzofuro [3,2-e] isoquinoline-4a, 9,13-triol dihydrochloride:
1 H-NMR (CD 3 OD) δ: 7.03 (1H, d, J = 8.6 Hz), 6.88 (1H, d, J = 8.2 Hz), 5.49 (1H, s), 5.29 (1H, s), 4.81 (1H, d, J = 7.2 Hz), 3.86 (1H, s), 3.49-3.42 (1H, m), 3.34 (2H, s), 3.08-3.02 (2H, m), 2.95 (1H, dd, J = 13.8, 7.5 Hz), 2.82 (3H, s), 2.66-2.55 (2H, m), 2.06-1.98 (2H, m), 1.94-1.83 (2H, m), 1.69-1.63 (1H, m), 1.23-1.16 (1H, m), 0.91-0.74 (2H, m), 0.62-0.53 (2H, m).
(実施例1) (E)−N−((4R,4aS,7R,7aR,12bS,13S)−3−(シクロプロピルメチル)−4a,9,13−トリヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)−N−メチル−3−(チオフェン−2−イル)アクリルアミドの合成:
1H-NMR (CDCl3) δ: 7.82 (0.5H, d, J= 15.0 Hz), 7.65 (0.5H, d, J = 15.4 Hz), 7.33 (0.5H, d, J = 5.0 Hz), 7.28-7.27 (1H, m), 7.22-7.16 (0.8H, m), 7.10 (0.6H, d, J = 3.6 Hz), 7.04 (0.6H, t, J = 4.3 Hz), 6.96-6.93 (1.5H, m), 6.83 (1H, s), 6.68 (0.5H, d, J= 15.4 Hz), 6.39 (0.5H, d, J = 15.0 Hz), 5.02-4.97 (1H, m), 4.71-4.64 (0.5H, m), 4.59 (1H, dd, J = 8.2, 4.5 Hz), 3.79-3.72 (0.5H, m), 3.15-3.13 (2.4H, m), 3.03 (1.6H, s), 2.64 (1H, td, J = 11.2, 4.7 Hz), 2.58-2.45 (2H, m), 2.32-2.18 (2H, m), 2.15-2.00 (2H, m), 1.90-1.72 (2H, m), 1.53-1.42 (2H, m), 0.95-0.86 (1H, m), 0.65-0.53 (2H, m), 0.25-0.12 (2H, m).
Example 1 (E) -N-((4R, 4aS, 7R, 7aR, 12bS, 13S) -3- (cyclopropylmethyl) -4a, 9,13-trihydroxy-2,3,4,4a , 5,6,7,7a-Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) -N-methyl-3- (thiophen-2-yl) acrylamide:
1 H-NMR (CDCl 3 ) δ: 7.82 (0.5H, d, J = 15.0 Hz), 7.65 (0.5H, d, J = 15.4 Hz), 7.33 (0.5H, d, J = 5.0 Hz), 7.28 -7.27 (1H, m), 7.22-7.16 (0.8H, m), 7.10 (0.6H, d, J = 3.6 Hz), 7.04 (0.6H, t, J = 4.3 Hz), 6.96-6.93 (1.5H , m), 6.83 (1H, s), 6.68 (0.5H, d, J = 15.4 Hz), 6.39 (0.5H, d, J = 15.0 Hz), 5.02-4.97 (1H, m), 4.71-4.64 ( 0.5H, m), 4.59 (1H, dd, J = 8.2, 4.5 Hz), 3.79-3.72 (0.5H, m), 3.15-3.13 (2.4H, m), 3.03 (1.6H, s), 2.64 ( 1H, td, J = 11.2, 4.7 Hz), 2.58-2.45 (2H, m), 2.32-2.18 (2H, m), 2.15-2.00 (2H, m), 1.90-1.72 (2H, m), 1.53- 1.42 (2H, m), 0.95-0.86 (1H, m), 0.65-0.53 (2H, m), 0.25-0.12 (2H, m).
(実施例2) (E)−N−((4R,4aS,7R,7aR,12bS,13S)−3−(シクロプロピルメチル)−4a,9,13−トリヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)−3−(4−ヒドロキシフェニル)−N−メチルアクリルアミドの合成:
1H-NMR (DMSO-D6) δ: 9.86 (0.4H, s), 9.80 (0.6H, s), 9.66 (0.6H, s), 9.21 (0.4H, s), 7.54 (0.6H, d, J = 8.6 Hz), 7.38-7.32 (1.7H, m), 7.20 (0.7H, d, J= 15.4 Hz), 6.94 (0.4H, d, J = 15.4 Hz), 6.87-6.75 (3.7H, m), 6.65 (0.3H, d, J = 8.2 Hz), 6.49 (0.6H, d, J = 15.9 Hz), 5.26-5.22 (1.1H, m), 4.81-4.70 (2.5H, m), 4.63 (0.8H, d, J = 8.2 Hz), 4.28-4.19 (0.6H, m), 3.66-3.56 (1H, m), 3.09 (1H, s), 2.92 (1H, s), 2.84 (2H, s), 2.61-2.53 (1H, m), 2.40-2.32 (1H, m), 2.22-1.99 (2H, m), 1.94-1.84 (1H, m), 1.82-1.73 (1H, m), 1.49-1.43 (1H, m), 1.32-1.19 (2H, m), 0.95-0.87 (1H, m), 0.54-0.44 (2H, m), 0.24-0.10 (2H, m).
Example 2 (E) -N-((4R, 4aS, 7R, 7aR, 12bS, 13S) -3- (cyclopropylmethyl) -4a, 9,13-trihydroxy-2,3,4,4a , 5,6,7,7a-Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) -3- (4-hydroxyphenyl) -N-methylacrylamide:
1 H-NMR (DMSO-D 6 ) δ: 9.86 (0.4H, s), 9.80 (0.6H, s), 9.66 (0.6H, s), 9.21 (0.4H, s), 7.54 (0.6H, d , J = 8.6 Hz), 7.38-7.32 (1.7H, m), 7.20 (0.7H, d, J = 15.4 Hz), 6.94 (0.4H, d, J = 15.4 Hz), 6.87-6.75 (3.7H, m), 6.65 (0.3H, d, J = 8.2 Hz), 6.49 (0.6H, d, J = 15.9 Hz), 5.26-5.22 (1.1H, m), 4.81-4.70 (2.5H, m), 4.63 (0.8H, d, J = 8.2 Hz), 4.28-4.19 (0.6H, m), 3.66-3.56 (1H, m), 3.09 (1H, s), 2.92 (1H, s), 2.84 (2H, s ), 2.61-2.53 (1H, m), 2.40-2.32 (1H, m), 2.22-1.99 (2H, m), 1.94-1.84 (1H, m), 1.82-1.73 (1H, m), 1.49-1.43 (1H, m), 1.32-1.19 (2H, m), 0.95-0.87 (1H, m), 0.54-0.44 (2H, m), 0.24-0.10 (2H, m).
(比較例1) N−((4R,4aS,7R,7aR,12bS,13S)−3−(シクロプロピルメチル)−4a,9,13−トリヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)−N−メチルシンナムアミドの合成:
1H-NMR (CDCl3) δ: 7.69 (0.4H, d, J= 15.4 Hz), 7.52 (0.7H, dd, J = 7.2, 1.8 Hz), 7.43 (0.6H, d, J= 15.4 Hz), 7.38-7.36 (1H, m), 7.33-7.30 (1.3H, m), 7.23-7.21 (2H, m), 6.98-6.93 (1.4H, m), 6.89 (0.4H, d, J= 15.4 Hz), 6.85-6.83 (0.6H, m), 6.62 (0.6H, d, J = 15.4 Hz), 4.99 (1H, t, J = 5.4 Hz), 4.71-4.64 (0.4H, m), 4.60 (1H, t, J = 7.9 Hz), 3.83-3.77 (0.6H, m), 3.16-3.12 (2H, m), 3.04 (2H, s), 2.64 (1H, td, J = 12.1, 4.7 Hz), 2.58-2.44 (2H, m), 2.30-2.18 (2H, m), 2.14-2.02 (1H, m), 1.86-1.72 (3H, m), 1.53-1.42 (2H, m), 0.94-0.86 (1H, m), 0.62-0.53 (2H, m), 0.24-0.12 (2H, m).
Comparative Example 1 N-((4R, 4aS, 7R, 7aR, 12bS, 13S) -3- (cyclopropylmethyl) -4a, 9,13-trihydroxy-2,3,4,4a, 5,6 , 7,7a-Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) -N-methylcinnamamide:
1 H-NMR (CDCl 3 ) δ: 7.69 (0.4H, d, J = 15.4 Hz), 7.52 (0.7H, dd, J = 7.2, 1.8 Hz), 7.43 (0.6H, d, J = 15.4 Hz) , 7.38-7.36 (1H, m), 7.33-7.30 (1.3H, m), 7.23-7.21 (2H, m), 6.98-6.93 (1.4H, m), 6.89 (0.4H, d, J = 15.4 Hz ), 6.85-6.83 (0.6H, m), 6.62 (0.6H, d, J = 15.4 Hz), 4.99 (1H, t, J = 5.4 Hz), 4.71-4.64 (0.4H, m), 4.60 (1H , t, J = 7.9 Hz), 3.83-3.77 (0.6H, m), 3.16-3.12 (2H, m), 3.04 (2H, s), 2.64 (1H, td, J = 12.1, 4.7 Hz), 2.58 -2.44 (2H, m), 2.30-2.18 (2H, m), 2.14-2.02 (1H, m), 1.86-1.72 (3H, m), 1.53-1.42 (2H, m), 0.94-0.86 (1H, m), 0.62-0.53 (2H, m), 0.24-0.12 (2H, m).
(比較例2) (E)−3−(4−クロロフェニル)−N−((4R,4aS,7R,7aR,12bS,13S)−3−(シクロプロピルメチル)−4a,9,13−トリヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)−N−メチルアクリルアミドの合成:
1H-NMR (CDCl3) δ: 7.63 (0.5H, d, J= 15.4 Hz), 7.46 (0.7H, d, J = 8.6 Hz), 7.41-7.34 (1.4H, m), 7.25-7.19 (2.5H, m), 6.96 (1.4H, s), 6.89-6.85 (0.8H, m), 6.57 (0.7H, d, J = 15.4 Hz), 5.01-4.97 (1.7H, m), 4.68-4.58 (1.5H, m), 3.81-3.72 (0.8H, m), 3.17-3.13 (2H, m), 3.05 (2H, s), 2.66 (1H, dd, J = 12.0, 4.8 Hz), 2.58-2.46 (2H, m), 2.33-2.02 (3H, m), 1.85-1.77 (2H, m), 1.68-1.65 (1H, m), 1.55-1.42 (2H, m), 0.95-0.87 (1H, m), 0.64-0.55 (2H, m), 0.24-0.13 (2H, m).
Comparative Example 2 (E) -3- (4-Chlorophenyl) -N-((4R, 4aS, 7R, 7aR, 12bS, 13S) -3- (cyclopropylmethyl) -4a, 9,13-trihydroxy Synthesis of -2,3,4,4a, 5,6,7,7a-octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) -N-methylacrylamide:
1 H-NMR (CDCl 3 ) δ: 7.63 (0.5H, d, J = 15.4 Hz), 7.46 (0.7H, d, J = 8.6 Hz), 7.41-7.34 (1.4H, m), 7.25-7.19 ( 2.5H, m), 6.96 (1.4H, s), 6.89-6.85 (0.8H, m), 6.57 (0.7H, d, J = 15.4 Hz), 5.01-4.97 (1.7H, m), 4.68-4.58 (1.5H, m), 3.81-3.72 (0.8H, m), 3.17-3.13 (2H, m), 3.05 (2H, s), 2.66 (1H, dd, J = 12.0, 4.8 Hz), 2.58-2.46 (2H, m), 2.33-2.02 (3H, m), 1.85-1.77 (2H, m), 1.68-1.65 (1H, m), 1.55-1.42 (2H, m), 0.95-0.87 (1H, m) , 0.64-0.55 (2H, m), 0.24-0.13 (2H, m).
(実施例3)ヒトオピオイドκ受容体及びμ受容体作動性試験:
ヒトオピオイドκ受容体又はヒトオピオイドμ受容体を安定発現した細胞を用いて、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩のヒトオピオイドκ受容体及びμ受容体作動性を評価した。比較化合物として、比較例1の化合物及び比較例2の化合物を同様に評価した。
(Example 3) Human opioid κ receptor and μ receptor agonist test:
Using cells stably expressing human opioid κ receptor or human opioid μ receptor, the morphinan derivative represented by the above formula (I) or formula (II) or a pharmaceutically acceptable acid addition salt thereof Human opioid κ receptor and μ receptor agonism was evaluated. As a comparative compound, the compound of Comparative Example 1 and the compound of Comparative Example 2 were similarly evaluated.
ヒトオピオイドκ受容体遺伝子をCHO−K1細胞に導入し、定法に従い、ヒトオピオイドκ受容体安定発現細胞を作製した。 A human opioid κ receptor gene was introduced into CHO-K1 cells, and human opioid κ receptor stably expressing cells were prepared according to a conventional method.
ヒトオピオイドμ受容体遺伝子をCHO−dhfr(−)細胞に導入し、定法に従い、ヒトオピオイドμ受容体安定発現細胞を作製した。 A human opioid μ receptor gene was introduced into CHO-dhfr (−) cells, and human opioid μ receptor stably expressing cells were prepared according to a conventional method.
ヒトオピオイドκ受容体安定発現細胞は、10% FBS及び500μg/mL G418を含むF−12を、ヒトオピオイドμ受容体安定発現細胞は、10%FBS及び500μg/mL G418を含むMEM−αを、培養液として用い、37℃、5%CO2インキュベーター内で培養維持した。 Human opioid κ receptor stably expressing cells contain F-12 containing 10% FBS and 500 μg / mL G418, and human opioid μ receptor stably expressing cells contain MEM-α containing 10% FBS and 500 μg / mL G418. The culture was used and maintained in a 37 ° C., 5% CO 2 incubator.
被験物質のヒトオピオイド受容体作動性の評価は、上記のヒトオピオイド受容体安定発現細胞を用いて、Forskolin誘発cAMP産生に対する抑制作用を指標に行った。cAMP産生量の測定にはLANCE(商標) cAMP 384 Kit(PerkinElmer)を用いた。 The human opioid receptor operability of the test substance was evaluated using the above human opioid receptor stably expressing cells as an index of the inhibitory effect on Forskolin-induced cAMP production. LACE (trademark) cAMP 384 Kit (PerkinElmer) was used for the measurement of cAMP production.
Stimulationバッファーとして、0.5mmol/L IBMX、5mmol/L HEPES、0.1% BSAを含むHBSSバッファー(pH7.4)(以下、SB)を用時調製した。SBを用いてAlexa Fluor(登録商標)647−anti cAMP antibodyを希釈し、抗cAMP抗体溶液を調製した。また、cAMP Detection Bufferを用いて、Europium−W8044 Labeled streptavidin/Biotin−cAMPミックスを用時調製した。なお、Europium−W8044 Labeled streptavidin/Biotin−cAMPミックスは調製後、室温・遮光条件下で約60分間インキュベートした。 As a stimulation buffer, an HBSS buffer (pH 7.4) (hereinafter referred to as SB) containing 0.5 mmol / L IBMX, 5 mmol / L HEPES, and 0.1% BSA was prepared at the time of use. Alexa Fluor (registered trademark) 647-anti cAMP antibody was diluted with SB to prepare an anti-cAMP antibody solution. In addition, a Europium-W8044 Labeled streptavidin / Biotin-cAMP mix was prepared at the time of use using a cAMP Detection Buffer. The Europium-W8044 Labeled streptavidin / Biotin-cAMP mix was incubated for about 60 minutes under room temperature and light-shielding conditions after preparation.
各被験物質及びForskolinは、ジメチルスルホキシド(以下、DMSO)に溶解した後、SBで希釈したものを用い、被験物質/Forskolin混合溶液とした。反応系でのForskolinの最終濃度は10μmol/Lとし、DMSO最終濃度は0.4%以下とした。 Each test substance and Forskolin were dissolved in dimethyl sulfoxide (hereinafter referred to as DMSO) and then diluted with SB to prepare a test substance / Forskolin mixed solution. The final concentration of Forskolin in the reaction system was 10 μmol / L, and the final concentration of DMSO was 0.4% or less.
上記のヒトオピオイド受容体安定発現細胞(ヒトオピオイドκ受容体安定発現細胞又はヒトオピオイドμ受容体安定発現細胞)をPBS(−)に懸濁し、生細胞数を求めた。細胞をチューブに移し、5分間(室温、約470×g)遠心分離し、細胞ペレットを得た。細胞ペレットに抗cAMP抗体溶液を加え、1×106cells/mLの細胞/抗cAMP抗体溶液を調製した。 The above human opioid receptor stable expression cells (human opioid kappa receptor stable expression cells or human opioid μ receptor stable expression cells) were suspended in PBS (−), and the number of living cells was determined. The cells were transferred to a tube and centrifuged for 5 minutes (room temperature, about 470 × g) to obtain a cell pellet. An anti-cAMP antibody solution was added to the cell pellet to prepare a 1 × 10 6 cells / mL cell / anti-cAMP antibody solution.
プレート(384ウェル)に、被験物質/Forskolin混合溶液を5μL添加した。なお、「被験物質非添加ウェル」として、10μmol/LのForskolinを含むSBを5μL添加したウェルを設けた。各ウェルに、細胞/抗cAMP抗体溶液を5μL添加した。 5 μL of the test substance / Forskolin mixed solution was added to the plate (384 well). In addition, a well to which 5 μL of SB containing 10 μmol / L Forskolin was added was provided as a “test substance non-added well”. 5 μL of cell / anti-cAMP antibody solution was added to each well.
また、cAMP検量線を作成するために、キットに付属の50μmol/L cAMPスタンダード溶液をSBで系列希釈したcAMP標準液を5μL、及び、抗cAMP抗体溶液を5μL添加したウェルを設けた。 In order to prepare a cAMP calibration curve, 5 μL of a cAMP standard solution obtained by serial dilution of the 50 μmol / L cAMP standard solution attached to the kit with SB and 5 μL of an anti-cAMP antibody solution were added.
プレートを37℃・遮光条件下で60分間インキュベーションした後、すべてのウェルに、Europium−W8044 Labeled streptavidin/Biotin−cAMPミックスを10μL添加した。プレートを室温・遮光条件下で60分間静置した後、EnVision(PerkinElmaer)を用いて、各ウェルの時間分解蛍光(cps:count per sec)を測定した。 After incubating the plate for 60 minutes at 37 ° C. in the dark, 10 μL of Europium-W8044 Labeled streptavidin / Biotin-cAMP mix was added to all wells. The plate was allowed to stand for 60 minutes at room temperature and under light-shielding conditions, and then time-resolved fluorescence (cps: count per sec) of each well was measured using EnVision (PerkinElmaer).
各被験物質の評価は、公比10の濃度で各濃度につきN=2で実施した。cAMP検量線の作成にはGraphPad Prismを用い、作成した検量線から各ウェルのcAMP濃度を算出した。 Each test substance was evaluated at a common ratio of 10 and N = 2 for each concentration. The cAMP calibration curve was created using GraphPad Prism, and the cAMP concentration in each well was calculated from the created calibration curve.
被験物質非添加ウェルのcAMP濃度を抑制率0%とした。また、ヒトオピオイドκ受容体作動性試験においては、ヒトオピオイドκ受容体作動性を示すU−69593(Sigma、#U103)(最終濃度10μmol/L)を被験物質の代わりに添加したときのcAMP濃度を抑制率100%とした。ヒトオピオイドμ受容体作動性試験においては、ヒトオピオイドμ受容体作動性を示すDAMGO(Sigma、#E7384)(最終濃度10μmol/L)を被験物質の代わりに添加したときのcAMP濃度を抑制率100%とした。各被験物質のForskolin誘発cAMP産生に対する抑制率(%)を求め、抑制率50%を挟む2点回帰により、各被験物質のEC50を算出した。 The cAMP concentration of the test substance non-added well was defined as 0% inhibition. In the human opioid κ receptor agonist test, c-AMP concentration when U-69593 (Sigma, # U103) (final concentration 10 μmol / L) showing human opioid κ receptor agonist was added instead of the test substance. Was controlled to 100%. In the human opioid μ receptor agonist test, the cAMP concentration when DAMGO (Sigma, # E7384) (final concentration 10 μmol / L) showing human opioid μ receptor agonist activity was added instead of the test substance was controlled at 100 %. The inhibition rate (%) for Forskolin-induced cAMP production of each test substance was determined, and the EC 50 of each test substance was calculated by two-point regression sandwiching the inhibition rate of 50%.
各被験物質のEC50値を表1に示す。 Table 1 shows the EC 50 value of each test substance.
表1の結果から明らかな通り、実施例1の化合物及び実施例2の化合物は、強力なヒトオピオイドκ受容体作動性を示した。一方、実施例1の化合物及び実施例2の化合物は、極めて弱いヒトオピオイドμ受容体作動性を示した。したがって、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩は、選択的オピオイドκ受容体作動性を有することが示され、薬物依存性や呼吸抑制などのオピオイドμ受容体作動薬の副作用が低減された、強力な鎮痛薬となり得る。 As is clear from the results in Table 1, the compound of Example 1 and the compound of Example 2 showed potent human opioid κ receptor agonist activity. On the other hand, the compound of Example 1 and the compound of Example 2 showed extremely weak human opioid μ receptor agonist activity. Therefore, the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof has been shown to have selective opioid κ receptor agonist activity, It can be a powerful analgesic with reduced side effects of opioid μ receptor agonists such as sex and respiratory depression.
(実施例4)マウスにおける脳移行性確認試験:
上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩をマウスに静脈内投与した後の血漿中濃度及び脳中濃度を測定し、脳移行性を評価した。比較化合物として、比較例1の化合物及び比較例2の化合物を同様に評価した。また、比較化合物として、N−((4R,4aS,7R,7aR,12bS)−3−(シクロプロピルメチル)−4,9−ジヒドロキシ−2,3,4,4a,5,6,7,7a−オクタヒドロ−1H−4,12−メタノベンゾフロ[3,2−e]イソキノリン−7−イル)−N−メチルシンナムアミド(以下、比較例3の化合物)(国際公開第1993/015081号)を同様に評価した。
(Example 4) Brain migration test in mice:
The plasma concentration and brain concentration after the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof was intravenously administered to a mouse were measured. Migration was evaluated. As a comparative compound, the compound of Comparative Example 1 and the compound of Comparative Example 2 were similarly evaluated. As a comparative compound, N-((4R, 4aS, 7R, 7aR, 12bS) -3- (cyclopropylmethyl) -4,9-dihydroxy-2,3,4,4a, 5,6,7,7a -Octahydro-1H-4,12-methanobenzofuro [3,2-e] isoquinolin-7-yl) -N-methylcinnamamide (hereinafter, compound of Comparative Example 3) (International Publication No. 1993/015081) Evaluated.
実験には、固形飼料(オリエンタル酵母工業株式会社)及び水道水を自由に摂取させた7週齢のCrl:CD1(ICR)系又はCrlj:CD1(ICR)系雄性マウス(日本チャールス・リバー株式会社)を使用した。 In the experiment, a 7-week-old Crl: CD1 (ICR) -type or Crlj: CD1 (ICR) -type male mouse (Nippon Charles River Co., Ltd.) was allowed to freely ingest solid feed (Oriental Yeast Co., Ltd.) and tap water. )It was used.
被験物質は3種の化合物を1つのグループとし、3種の化合物を含有する溶液を投与するカセット投与を実施し評価した。被験物質のグループは、実施例1の化合物、比較例1の化合物及び比較例3の化合物からなるグループ、並びに、実施例2の化合物、比較例2の化合物及び比較例3の化合物からなるグループとした。3種の化合物を、それぞれ0.33mg/kg(各被験物質のグループにつき合計1mg/kg)の用量で単回カセット静脈内投与した。投与液は、DMSO/Tween 80/蒸留水混液(1:1:8)に溶解して調製した。投与液の静脈内投与は、無麻酔下で注射針及び注射筒を用いて5mL/kgの容量で、尾静脈内に行った。 The test substances were evaluated by carrying out cassette administration in which a solution containing the three compounds was administered, with three compounds as one group. The test substance group includes a group consisting of the compound of Example 1, the compound of Comparative Example 1 and the compound of Comparative Example 3, and the group consisting of the compound of Example 2, the compound of Comparative Example 2 and the compound of Comparative Example 3. did. The three compounds were each administered intravenously in a single cassette at a dose of 0.33 mg / kg (1 mg / kg total for each test substance group). The dosing solution was prepared by dissolving in a DMSO / Tween 80 / distilled water mixture (1: 1: 8). Intravenous administration of the administration liquid was carried out in the tail vein with a volume of 5 mL / kg using a syringe needle and syringe without anesthesia.
静脈内投与後15分に、マウスの後大静脈又は心臓からイソフルラン麻酔下で採血した。なお、各被験物質のグループにつき、3匹のマウスに投与した。また、採血を終えたマウスを放血安楽死させた後、脳を摘出した。さらに、被験物質を投与していないマウスから、血液及び脳を採取した。 Fifteen minutes after intravenous administration, blood was collected from the hind vena cava or heart of mice under isoflurane anesthesia. Each test substance group was administered to 3 mice. In addition, after finishing blood collection, the mouse was exsanguinated and euthanized, and then the brain was removed. Furthermore, blood and brain were collected from mice not administered the test substance.
採取した血液を、4℃、15,000rpmで10分間遠心(久保田商事 S700FR)して血漿を分離し、得られた血漿は分析用試料の調製時まで−30℃で保管した。また、採取した脳は、脳重量の2〜3倍量の蒸留水を加えて均一になるまで組織をすりつぶし(株式会社バイオメディカルサイエンス Shake Master Neo)、得られた脳ホモジナイズ液は分析用試料の調製時まで−30℃で保管した。なお、被験物質を投与したマウスから得た血漿及び脳ホモジナイズ液を、それぞれマウス血漿サンプル、マウス脳サンプルとよび、被験物質を投与していないマウスから得た血漿及び脳ホモジナイズ液を、それぞれブランク血漿、ブランク脳とよぶ。 The collected blood was centrifuged at 4 ° C. and 15,000 rpm for 10 minutes (Kubota Corporation S700FR) to separate plasma, and the obtained plasma was stored at −30 ° C. until the preparation of the sample for analysis. In addition, the collected brain is added with 2 to 3 times the brain weight of distilled water, and the tissue is ground until it becomes uniform (Biomedical Science, Shake Master Neo). The obtained brain homogenized solution is used as an analytical sample. Stored at −30 ° C. until preparation. The plasma and brain homogenized solution obtained from the mice administered with the test substance are called mouse plasma sample and mouse brain sample, respectively, and the plasma and brain homogenized solution obtained from the mouse not administered with the test substance are respectively blank plasma. This is called a blank brain.
マウス血漿サンプル、又は、ブランク血漿で適宜希釈したマウス血漿サンプル50μLに、内部標準溶液5〜20μL及びメタノール、アセトニトリル又はメタノール/アセトニトリル混液(1:1)100〜200μLを添加し、撹拌してから、4℃で10分間冷却した。また、マウス脳サンプル、又は、ブランク脳で適宜希釈したマウス脳サンプル50μLに、内部標準溶液5〜20μL及びメタノール、アセトニトリル又はメタノール/アセトニトリル混液(1:1)100〜200μLを添加し、撹拌してから、4℃で10分間冷却した。検量線サンプルは、ブランク血漿及びブランク脳に検量線用標準液を添加したものを、同様に処理して調製した。 To 50 μL of mouse plasma sample or mouse plasma sample appropriately diluted with blank plasma, 5-20 μL of internal standard solution and 100-200 μL of methanol, acetonitrile or methanol / acetonitrile mixture (1: 1) were added, stirred, Cooled at 4 ° C. for 10 minutes. Also, add 50 to 20 μL of an internal standard solution and 100 to 200 μL of methanol, acetonitrile or methanol / acetonitrile mixed solution (1: 1) to 50 μL of a mouse brain sample or a mouse brain sample appropriately diluted with a blank brain, and stir. And cooled at 4 ° C. for 10 minutes. A calibration curve sample was prepared by treating a blank plasma and a blank brain to which a standard curve standard solution was added in the same manner.
冷却後の各サンプルを、4℃、3,000rpmで10分間遠心(久保田商事 S700FR)し、上清を0.66μmフィルタープレート(コーニング)上に添加してさらに4oC、2,000rpmで5分間遠心ろ過(久保田商事 S700FR)し、得られたろ液に0.1%volギ酸水溶液(0〜100μL)を添加して、分析用試料とした。 Each sample after cooling is centrifuged at 3000 rpm for 10 minutes at 4 ° C. (Kubota Corporation S700FR), and the supernatant is added onto a 0.66 μm filter plate (Corning), and further centrifuged at 4 ° C. and 2,000 rpm for 5 minutes. Filtration (Kubota Corporation S700FR) was performed, and 0.1% vol formic acid aqueous solution (0 to 100 μL) was added to the obtained filtrate to prepare a sample for analysis.
得られた分析用試料をLC/MS/MS分析した。分析は、表2に示す条件又はそれに準じる方法で行った。 The obtained analytical sample was subjected to LC / MS / MS analysis. The analysis was performed under the conditions shown in Table 2 or a method according thereto.
LC/MS/MS分析の結果から、Analyst 1.5又は1.6(Applied Biosystems)を用いて検量線を作成し、分析用試料中の被験物質の濃度を算出した。各被験物質について、投与した被験物質の血漿中濃度(ng/mL)及び脳中濃度(ng/g組織)(平均値±標準偏差、N=3)を算出した。また、各被験物質の脳中濃度/血漿中濃度比(Kp,brain)を算出した。 From the results of LC / MS / MS analysis, a calibration curve was created using Analyst 1.5 or 1.6 (Applied Biosystems), and the concentration of the test substance in the sample for analysis was calculated. For each test substance, the plasma concentration (ng / mL) and brain concentration (ng / g tissue) (average value ± standard deviation, N = 3) of the administered test substance were calculated. Further, the brain concentration / plasma concentration ratio (Kp, brain) of each test substance was calculated.
その結果を表3及び表4に示す。表3は、実施例1の化合物、比較例1の化合物及び比較例3の化合物のカセット投与後15分の脳中濃度/血漿中濃度比(Kp,brain)を示したものである。表4は、実施例2の化合物、比較例2の化合物及び比較例3の化合物のカセット投与後15分の脳中濃度/血漿中濃度比(Kp,brain)を示したものである。 The results are shown in Tables 3 and 4. Table 3 shows the brain concentration / plasma concentration ratio (Kp, brain) 15 minutes after the cassette administration of the compound of Example 1, the compound of Comparative Example 1, and the compound of Comparative Example 3. Table 4 shows the brain concentration / plasma concentration ratio (Kp, brain) 15 minutes after administration of the compound of Example 2, the compound of Comparative Example 2, and the compound of Comparative Example 3 after cassette administration.
比較化合物として、ナルフラフィン塩酸塩(以下、比較例4の化合物)(国際公開第1993/015081号)をマウスに静脈内投与した後の血漿中濃度及び脳中濃度を測定し、脳移行性を評価した。 As a comparative compound, nalflaphine hydrochloride (compound of Comparative Example 4 hereinafter) (International Publication No. 1993/015081) was intravenously administered to mice to measure plasma concentration and brain concentration to evaluate brain migration did.
実験には、固形飼料(オリエンタル酵母工業株式会社)及び水道水を自由に摂取させた7週齢のCrl:CD1(ICR)系又はCrlj:CD1(ICR)系雄性マウス(日本チャールス・リバー株式会社)を使用した。 In the experiment, a 7-week-old Crl: CD1 (ICR) -type or Crlj: CD1 (ICR) -type male mouse (Nippon Charles River Co., Ltd.) was allowed to freely ingest solid feed (Oriental Yeast Co., Ltd.) and tap water. )It was used.
比較例4の化合物をマウスに1mg/kgの用量で単回静脈内投与した。比較例4の化合物の投与液は、それぞれ、生理食塩液、DMSO/Tween 80/蒸留水混液(1:1:8)、DMSO/ヒドロキシプロピル−β−シクロデキストリン(以下、HP−β−CD)/蒸留水混液(1:8:11)に溶解して調製した。投与液の静脈内投与は、無麻酔下で注射針及び注射筒を用いて5mL/kgの容量で、尾静脈内に行った。 The compound of Comparative Example 4 was administered as a single intravenous dose to mice at a dose of 1 mg / kg. The administration solutions of the compound of Comparative Example 4 were physiological saline, DMSO / Tween 80 / distilled water mixture (1: 1: 8), DMSO / hydroxypropyl-β-cyclodextrin (hereinafter, HP-β-CD), respectively. / Prepared by dissolving in a distilled water mixture (1: 8: 11). Intravenous administration of the administration liquid was carried out in the tail vein with a volume of 5 mL / kg using a syringe needle and syringe without anesthesia.
静脈内投与後15分に、マウスの後大静脈又は心臓からイソフルラン麻酔下で採血した。なお、比較例4の化合物を、3匹のマウスに投与した。また、採血を終えたマウスを放血安楽死させた後、脳を摘出した。さらに、比較例4の化合物を投与していないマウスから、血液及び脳を採取した。 Fifteen minutes after intravenous administration, blood was collected from the hind vena cava or heart of mice under isoflurane anesthesia. The compound of Comparative Example 4 was administered to 3 mice. In addition, after finishing blood collection, the mouse was exsanguinated and euthanized, and then the brain was removed. Furthermore, blood and brain were collected from mice not administered with the compound of Comparative Example 4.
採取した血液を、4℃、15,000rpmで10分間遠心(日立工機 CT15RE)して血漿を分離し、得られた血漿は分析用試料の調製時まで−30℃で保管した。また、採取した脳は、脳重量の2〜3倍量の蒸留水を加えて均一になるまで組織をすりつぶし(株式会社バイオメディカルサイエンス Shake Master Neo)、得られた脳ホモジナイズ液は分析用試料の調製時まで−30℃で保管した。なお、比較例4の化合物を投与したマウスから得た血漿及び脳ホモジナイズ液を、それぞれマウス血漿サンプル、マウス脳サンプルとよび、比較例4の化合物を投与していないマウスから得た血漿及び脳ホモジナイズ液を、それぞれブランク血漿、ブランク脳とよぶ。 The collected blood was centrifuged at 4 ° C. and 15,000 rpm for 10 minutes (Hitachi Koki CT15RE) to separate plasma, and the obtained plasma was stored at −30 ° C. until the preparation of the sample for analysis. In addition, the collected brain is added with 2 to 3 times the brain weight of distilled water, and the tissue is ground until it becomes uniform (Biomedical Science, Shake Master Neo). The obtained brain homogenized solution is used as an analytical sample. Stored at −30 ° C. until preparation. The plasma and brain homogenized solution obtained from the mouse administered with the compound of Comparative Example 4 are referred to as mouse plasma sample and mouse brain sample, respectively, and the plasma and brain homogenized obtained from the mouse not administered with the compound of Comparative Example 4 are used. The liquids are called blank plasma and blank brain, respectively.
マウス血漿サンプル、又は、ブランク血漿で適宜希釈したマウス血漿サンプル50μLに、内部標準溶液5〜20μL及びメタノール、アセトニトリル又はメタノール/アセトニトリル混液(1:1)100〜200μLを添加し、撹拌してから、4℃で10分間冷却した。また、マウス脳サンプル、又は、ブランク脳で適宜希釈したマウス脳サンプル50μLに、内部標準溶液5〜20μL及びメタノール、アセトニトリル又はメタノール/アセトニトリル混液(1:1)100〜200μLを添加し、撹拌してから、4℃で10分間冷却した。検量線サンプルは、ブランク血漿及びブランク脳に検量線用標準液を添加したものを、同様に処理して調製した。 To 50 μL of mouse plasma sample or mouse plasma sample appropriately diluted with blank plasma, 5-20 μL of internal standard solution and 100-200 μL of methanol, acetonitrile or methanol / acetonitrile mixture (1: 1) were added, stirred, Cooled at 4 ° C. for 10 minutes. Also, add 50 to 20 μL of an internal standard solution and 100 to 200 μL of methanol, acetonitrile or methanol / acetonitrile mixed solution (1: 1) to 50 μL of a mouse brain sample or a mouse brain sample appropriately diluted with a blank brain, and stir. And cooled at 4 ° C. for 10 minutes. A calibration curve sample was prepared by treating a blank plasma and a blank brain to which a standard curve standard solution was added in the same manner.
冷却後の各サンプルを、4℃、3,000rpmで10分間遠心(日立工機 Himac CF7D2)し、上清を0.66μmフィルタープレート(コーニング)上に添加してさらに4oC、2,000rpmで5分間遠心ろ過(日立工機 Himac CF7D2)し、得られたろ液に蒸留水(0〜100μL)を添加して、分析用試料とした。 Each sample after cooling was centrifuged at 3,000 rpm at 4 ° C. for 10 minutes (Hitachi Koki Himac CF7D2), and the supernatant was added onto a 0.66 μm filter plate (Corning), and further 5 ° C. at 4 ° C. and 2,000 rpm. Centrifugal filtration (Hitachi Koki Himac CF7D2) was performed for a minute, and distilled water (0 to 100 μL) was added to the obtained filtrate to prepare a sample for analysis.
得られた分析用試料をLC/MS/MS分析した。分析は、表5に示す条件又はそれに準じる方法で行った。 The obtained analytical sample was subjected to LC / MS / MS analysis. The analysis was performed under the conditions shown in Table 5 or a method according thereto.
LC/MS/MS分析の結果から、Analyst 1.5又は1.6(Applied Biosystems)を用いて検量線を作成し、分析用試料中の比較例4の化合物の濃度を算出した。比較例4の化合物の血漿中濃度(ng/mL)及び脳中濃度(ng/g組織)(平均値±標準偏差、N=3)を算出した。また、比較例4の化合物の脳中濃度/血漿中濃度比(Kp,brain)を算出した。 From the results of LC / MS / MS analysis, a calibration curve was created using Analyst 1.5 or 1.6 (Applied Biosystems), and the concentration of the compound of Comparative Example 4 in the analytical sample was calculated. The plasma concentration (ng / mL) and brain concentration (ng / g tissue) (average value ± standard deviation, N = 3) of the compound of Comparative Example 4 were calculated. Further, the brain concentration / plasma concentration ratio (Kp, brain) of the compound of Comparative Example 4 was calculated.
その結果を表6に示す。表6は、比較例4の化合物を投与後15分の脳中濃度/血漿中濃度比(Kp,brain)を示したものである。 The results are shown in Table 6. Table 6 shows the brain concentration / plasma concentration ratio (Kp, brain) 15 minutes after administration of the compound of Comparative Example 4.
実施例1の化合物及び実施例2の化合物の脳中濃度/血漿中濃度比は、0.2以下であった。したがって、上記の式(I)又は式(II)で示される、モルヒナン誘導体又はその薬理学的に許容される酸付加塩は、末梢型であることが示された。 The brain concentration / plasma concentration ratio of the compound of Example 1 and the compound of Example 2 was 0.2 or less. Therefore, it was shown that the morphinan derivative represented by the above formula (I) or formula (II) or a pharmacologically acceptable acid addition salt thereof is a peripheral type.
本発明のモルヒナン誘導体又はその薬理学的に許容される酸付加塩は、末梢型の選択的オピオイドκ受容体作動性を有しており、オピオイドμ受容体作動性や中枢型のオピオイドκ受容体作動性に基づく副作用が低減された医薬として用いることができる。 The morphinan derivative of the present invention or a pharmacologically acceptable acid addition salt thereof has peripheral type selective opioid κ receptor agonist activity, opioid μ receptor agonist activity or central opioid κ receptor activity. It can be used as a medicament with reduced side effects based on operability.
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