JP2020510070A - ネココロナウイルス感染を処置する方法 - Google Patents
ネココロナウイルス感染を処置する方法 Download PDFInfo
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- JP2020510070A JP2020510070A JP2019550757A JP2019550757A JP2020510070A JP 2020510070 A JP2020510070 A JP 2020510070A JP 2019550757 A JP2019550757 A JP 2019550757A JP 2019550757 A JP2019550757 A JP 2019550757A JP 2020510070 A JP2020510070 A JP 2020510070A
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- feline
- coronavirus
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- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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Abstract
Description
この出願は、2017年3月14日に出願された米国仮出願第62/470,944号の優先権を主張し、この仮出願は、あらゆる目的でその全体について本願明細書中に援用される。
本願発明は概して、ネココロナウイルス感染を処置するための方法および化合物、特に、ネコ伝染性腹膜炎ウイルス(FIPV)を処置するための方法に関連する。
ネココロナウイルス(FCoV)は、コロナウイルス科(エンベロープを有する、ポジティブ鎖RNAのウイルスのグループ)に属し、一般にネコにおいて見出される。自然において、FCoVは2つの異なるバイオタイプ:ネコ腸コロナウイルス(FECV)、およびFECVの変異型であるネコ伝染性腹膜炎ウイルス(FIPV)として存在する。
いくつかの実施形態において、本願発明は、ネココロナウイルス感染を処置する方法であって、治療上有効な量の化合物:
I.定義
別途述べない限り、本願明細書中で用いられる場合、以下の用語および句は、以下の意味を有することが意図される。
これから、特定の実施形態について詳細に言及し、その特定の実施形態の例を、付属の説明、構造、および式において示す。本願発明は列挙した実施形態と合わせて記載されるが、これらは、本願発明をこれらの実施形態に限定するよう意図されているものではないことが理解される。対して本願発明は、すべての代替物、改変物、および均等物に及ぶことが意図されており、これらは、本願発明の特許請求の範囲に含まれ得る。
本願の方法に有用な化合物として、以下が挙げられる。
(2R,3R,4S,5R)−2−(4−アミノピロロ[2,1−f][1,2,4]トリアジン−7−イル)−3,4−ジヒドロキシ−5−(ヒドロキシメチル)テトラヒドロフラン−2−カルボニトリル
である。
本願発明は、ネココロナウイルス感染を処置する方法であって、治療上有効な量の、化合物1から化合物9の化合物、またはその薬学的に許容される塩を投与する工程を包含する方法を提供する。
本願発明の化合物は、従来のキャリアおよび賦形剤と製剤され、このキャリアおよび賦形剤は、通常の実施に合わせて選択される。錠剤は、賦形剤、流動化剤、フィラー、結合剤などを含有する。水性製剤は、無菌形態で調製され、経口投与以外の投与により送達されることが意図される場合、一般に水性製剤は等張である。すべての製剤は、必要に応じて賦形剤(“Handbook of Pharmaceutical Excipients” (1986)に記載される賦形剤など)を含有する。賦形剤として、アスコルビン酸および他の抗酸化物質、EDTAなどのキレート剤、デキストラン、ヒドロキシアルキルセルロース、ヒドロキシアルキルメチルセルロース、ステアリン酸などの炭水化物などが挙げられる。製剤のpHは約3から約11までの範囲であるが、通常、約7から10である。いくつかの実施形態において、製剤のpHは約2から約5までの範囲であるが、通常、約3から4である。
1種またはそれより多種の本願発明の化合物(本願明細書中では、有効成分として呼ぶ)は、処置される状態に適した任意の経路で投与される。適切な経路として、経口、直腸、鼻腔、肺内、局所(頬側および舌下を含む)、膣内、および非経口(皮下、筋肉内、静脈内、皮内、髄腔内、および硬膜外を含む)などが挙げられる。好ましい経路は、例えば受容者の状態により様々であり得ると理解される。
実施例1.ネココロナウイルスの処置
化合物1を、ネココロナウイルスに対する活性について、in vitroアッセイにおいてスクリーニングした。化合物1の段階希釈物を2.5×104コピーのネココロナウイルスと混合し、CRFK細胞を事前播種した96ウェルプレートに6連で加えた。このプレートを72時間にわたってインキュベートし、続いて、クリスタルバイオレットを用いて細胞培養単層を染色した。ウイルスに誘導される細胞変性効果のレベルを、視覚的に、そしてプレートリーダーを用いて定量化した。陽性対照のウェルは、化合物1を伴わずにウイルスを含んだ。陰性対照のウェルは、ウイルスおよび化合物1の両方を欠いた。EC50を、回帰分析により計算した。化合物1のEC50を表1に示す。
Crandell Rees Feline Kidney(CRFK)細胞におけるネコ伝染性腹膜炎ウイルス(FIPV)に対する抗ウイルス活性について、化合物を試験した。化合物の段階希釈物を、10から100TCID50のFIPVに混合し、事前播種したCRFK細胞を含む96ウェルプレートに加えた。プレートを37℃で48時間にわたってインキュベートした。インキュベート後に、CRFK細胞単層をクリスタルバイオレットを用いて染色し、FIPVに誘導される細胞変性効果のレベルを吸光プレートリーダーを用いて定量化した。EC50の値を、非線形回帰分析を用いて定めた。図1から図15を参照のこと。
特定の実施形態では、例えば、以下が提供される:
(項目1)
ネココロナウイルス感染を処置する方法であって、治療上有効な量の化合物:
(項目2)
前記コロナウイルスが、ネコ腸コロナウイルス(FECV)またはネコ伝染性腹膜炎ウイルス(FIPV)である、項目1に記載の方法。
(項目3)
ネココロナウイルス感染を処置する方法であって、治療上有効な量の
(項目4)
前記コロナウイルスが、ネコ腸コロナウイルス(FECV)またはネコ伝染性腹膜炎ウイルス(FIPV)である、項目3に記載の方法。
(項目5)
ネコ腸コロナウイルス(FECV)感染を処置する方法であって、治療上有効な量の化合物:
(項目6)
ネコ腸コロナウイルス(FECV)感染を処置する方法であって、治療上有効な量の
(項目7)
伝染性腹膜炎ウイルス(FIPV)感染を処置する方法であって、治療上有効な量の化合物:
(項目8)
伝染性腹膜炎ウイルス(FIPV)感染を処置する方法であって、治療上有効な量の
(項目9)
ネコ伝染性腹膜炎(FIP)を処置する方法であって、治療上有効な量の化合物:
(項目10)
ネコ伝染性腹膜炎(FIP)を処置する方法であって、治療上有効な量の
Claims (10)
- ネココロナウイルス感染を処置する方法であって、治療上有効な量の化合物:
- 前記コロナウイルスが、ネコ腸コロナウイルス(FECV)またはネコ伝染性腹膜炎ウイルス(FIPV)である、請求項1に記載の方法。
- ネココロナウイルス感染を処置する方法であって、治療上有効な量の
- 前記コロナウイルスが、ネコ腸コロナウイルス(FECV)またはネコ伝染性腹膜炎ウイルス(FIPV)である、請求項3に記載の方法。
- ネコ腸コロナウイルス(FECV)感染を処置する方法であって、治療上有効な量の化合物:
- ネコ腸コロナウイルス(FECV)感染を処置する方法であって、治療上有効な量の
- 伝染性腹膜炎ウイルス(FIPV)感染を処置する方法であって、治療上有効な量の化合物:
- 伝染性腹膜炎ウイルス(FIPV)感染を処置する方法であって、治療上有効な量の
- ネコ伝染性腹膜炎(FIP)を処置する方法であって、治療上有効な量の化合物:
- ネコ伝染性腹膜炎(FIP)を処置する方法であって、治療上有効な量の
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