基本情報
- 標準SMILES
O=C(O)CCCN1CCC(OC(c2ccc(Cl)cc2)c2ccccn2)CC1- InChIKey
YWGDOWXRIALTES-UHFFFAOYSA-N- 分子式
- C21H25ClN2O3
- 平均分子量
- 388.9 g/mol
- 単同位体質量
- 388.15537034
概要
Bepotastine is a non-sedating, selective antagonist of the histamine 1 (H1) receptor. Bepotastine was approved in Japan for use in the treatment of allergic rhinitis and uriticaria/puritus in July 2000 and January 2002, respectively, and is marketed by Tanabe Seiyaku Co., Ltd. under the brand name Talion. It is available in oral and opthalmic dosage forms in Japan. The opthalmic solution is FDA approved since Sept 8, 2009 and is under the brand name Bepreve.
名称と識別子
- 優先名称
- 4-((4-Chlorophenyl)-2-pyridinylmethoxy)-1-piperidinebutanoic Acid
- IUPAC
- 4-[4-[(4-chlorophenyl)-pyridin-2-ylmethoxy]piperidin-1-yl]butanoic acid
- 英語名
- 4-[(4-Chlorophenyl)-2-pyridinylmethoxy]-1-piperidinebutanoic acid
- 分子式
- C21H25ClN2O3
- 分子量
- 388.89
名称と別名
名称をさらに表示
データベース識別子
- CAS
1070505-53-1、190786-44-8- PubChem CID
- 2350
- DTXSID
DTXSID70869727- ChEMBL
CHEMBL4877190
物性
構造計算による物性
- XLogP
- 1
- 極性表面積
- 62.7 Ų
- 水素結合供与体数
- 1
- 水素結合受容体数
- 5
- 回転可能結合数
- 8
- 重原子数
- 27
- 形式電荷
- 0
- 複雑度
- 449
実験および物理化学的性質
物理化学的性質
- 比重(密度)
- 1.26 · 1.26
安全と法規制
毒性情報
Exposure Routes
Oral, Ophthalmic. Tmax, after single dose, opthalmic = 1.2 hours; Cmax, 1.5%, opthalmic dose = 7.3 ± 1.9 ng/mL; After 24 hours post-installation, levels of bepotastine are below quantifiable limit of 2 ng/mL. Minimal systemic absorption with opthalmic dosage form.
Toxicity Summary
Because of a type 1 hypersensitivity reaction cascade that is triggered by antigen exposure, allergic conjunctivitis occurs. Allergen exposure is followed by conjunctival mast cell degranulation and histamine released as a result of the formation of complementary IgE cross-links on the conjunctiva. Due to the release of histamine, symptoms such as itching can be observed. Bepotastine works to relieve itchy eyes by three primary mechanisms of action. It is a non-sedating, selective antagonist of the histamine 1 (H1) receptor, a mast cell stabilizer, and it suppresses the migration of eosinophils into inflamed tissues to prevent tissue damage and worsening of allergic inflammation of the conjunctiva.
化学と産業
薬理情報
Pharmacodynamics
Bepotastine is a non-sedating, selective antagonist of the histamine 1 (H1) receptor. It belongs to the second-generation piperidine chemical class. It is a mast cell stabilizer and suppresses the migration of eosinophils into inflamed tissues. Furthermore, bepotastine does not interact with serotonin, muscarinic, benzodiazepine, and beta-adrenergic receptor that would otherwise result in adverse reactions such as dry mouth or sonmolence. Onset of action = 0.25 hours; Duration of action = 12-24 hours;
Mechanism of Action
Because of a type 1 hypersensitivity reaction cascade that is triggered by antigen exposure, allergic conjunctivitis occurs. Allergen exposure is followed by conjunctival mast cell degranulation and histamine released as a result of the formation of complementary IgE cross-links on the conjunctiva. Due to the release of histamine, symptoms such as itching can be observed. Bepotastine works to relieve itchy eyes by three primary mechanisms of action. It is a non-sedating, selective antagonist of the histamine 1 (H1) receptor, a mast cell stabilizer, and it suppresses the migration of eosinophils into inflamed tissues to prevent tissue damage and worsening of allergic inflammation of the conjunctiva.
Metabolism/Metabolites
Minimal metabolism via CYP enzymes
Minimal metabolism via CYP enzymes Route of Elimination: When a oral dose of 2.5 - 40 mg bepotastine is given, 75%-90% of the dose was excreted unchanged in the urine by 24 hours. Half Life: Elimination half life = 2.5 hours
Absorption, Distribution and Excretion
Tmax, after single dose, opthalmic = 1.2 hours; Cmax, 1.5%, opthalmic dose = 7.3 ±1.9 ng/mL; After 24 hours post-installation, levels of bepotastine are below quantifiable limit of 2 ng/mL. Minimal systemic absorption with opthalmic dosage form.
When a oral dose of 2.5 - 40 mg bepotastine is given, 75%-90% of the dose was excreted unchanged in the urine by 24 hours.
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