申请人:Taiho Pharmaceutical Co., Ltd.
公开号:EP2762476A1
公开(公告)日:2014-08-06
The present invention provides a compound represented by the following general formula (I) or a salt thereof which has a Syk inhibitory effect (in the formula R1 represents a hydrogen atom or an optionally Ra-substituted C1-C6 alkyl group; A represents a hydrogen atom, an optionally Ra-substituted C1-C8 alkyl group, an optionally Ra-substituted C2-C6 alkenyl group, an optionally Ra-substituted C2-C6 alkynyl group, an optionally Rb-substituted C3-C10 cycloalkyl group, an optionally Rb-substituted C6-C14 aromatic hydrocarbon group, an optionally Rb-substituted 4- to 10-membered unsaturated heterocyclic group, or an optionally Rb-substituted 4-to 10-membered saturated heterocyclic group, or optionally forms a 4- to 10-membered unsaturated heterocyclic ring or a 4- to 10-membered saturated heterocyclic ring together with R1 and the nitrogen atom bonded thereto; R2 represents a hydrogen atom or an optionally Ra-substituted C1-C6 alkyl group; and B represents an optionally Rc-substituted unsaturated heterocyclic group).
本发明提供了由下通式(I)代表的化合物或其盐,该化合物具有抑制 Syk 的作用(式中 R1 代表氢原子或任选 Ra 取代的 C1-C6 烷基;A代表氢原子、任选Ra取代的C1-C8烷基、任选Ra取代的C2-C6烯基、任选Ra取代的C2-C6炔基、任选Rb取代的C3-C10环烷基、任选Rb取代的C6-C14芳烃基、任选 Rb 取代的 4 至 10 元不饱和杂环基团,或任选 Rb 取代的 4 至 10 元饱和杂环基团,或任选与 R1 及其键合的氮原子一起形成 4 至 10 元不饱和杂环或 4 至 10 元饱和杂环;R2 代表氢原子或任选 Ra 取代的 C1-C6 烷基;以及 B 代表任选 Rc 取代的不饱和杂环基团)。