Pharmacologically active alkylthiobenz imidazole derivatives and process for the preparation thereof
申请人:DOMPE' FARMACEUTICI S.p.A.
公开号:EP0334818A1
公开(公告)日:1989-09-27
New alkylthiobenzimidazole derivatives are described which belong to the class of formula:
wherein R₁ and R₂ each represent a 1-3 carbon atom alkyl radical or they may form with the adjacent nitrogen atom, an optionally substituted heterocyclic ring,
X represents a hydrogen atom or methyl radical
n is 1 or 2
R₃ represents a 4 - 6 carbon atom alkoxyalkyl radical, a 7 or 8 carbon atom arylalkyl radical or a 5 or 6 carbon atom cycloalkyl radical with the exception that R₃ may not be an arylalkyl radical when R₁ and R₂ each represent a 1-3 carbon atom alkyl radical
R₄ and R₅ may be the same or different and each represent a hydrogen atom or a 1-2 carbon atom alkyl or they, attached at the positions 5 and 6 of the benzimidazole nucleus, may form together the ring
The compounds (I) possess interesting antihistaminic and anti-allergic activities.
所述的新烷基硫代苯并咪唑衍生物属于式中的一类:
其中 R₁ 和 R₂ 各自代表 1-3 个碳原子的烷基,或者它们可以与相邻的氮原子形成任选取代的杂环、
X 代表氢原子或甲基
n 为 1 或 2
R₃ 代表 4-6 个碳原子的烷氧基烷基、7 或 8 个碳原子的芳基烷基或 5 或 6 个碳原子的环烷基,但当 R₁ 和 R₂ 各自代表 1-3 个碳原子的烷基时,R₃ 可能不是芳基烷基。
R₄ 和 R₅ 可以相同或不同,各自代表一个氢原子或 1-2 个碳原子的烷基,或者它们连接在苯并咪唑核的第 5 位和第 6 位,可以共同形成环
化合物(I)具有有趣的抗组胺和抗过敏活性。