申请人:Takeda Chemical Industries, Ltd.
公开号:US06340704B1
公开(公告)日:2002-01-22
The present invention provides a compound represented by the formula:
wherein R1 is an amino group which may be substituted; R2 is a hydrogen atom or a lower alkyl group which may be substituted; X is a methyne group which may be substituted or N(O)m (m is 0 or 1); a ring A is a homo- or hetero-cycle which is substituted by a halogen atom, lower alkyl, lower alkoxy or lower alkylenedioxy; and a ring B is a homo- or hetero-cycle which may be substituted; or a salt thereof, which exhibits excellent cell differentiation-inducing action and cell differentiation-inducing factor action-enhancing action, and is useful in the treatment and prevention of various nerve diseases or bone/joint diseases.
本发明提供了一种化合物,其表示为:其中R1是一个可以被取代的氨基团;R2是一个氢原子或一个可以被取代的低碳基团;X是一个可以被取代的亚甲基团或N(O)m(m为0或1);环A是一个被卤素原子、低碳基、低烷氧基或低烷二氧基取代的同源或异源环;环B是一个可以被取代的同源或异源环;或其盐,具有出色的细胞分化诱导作用和细胞分化诱导因子作用增强作用,可用于治疗和预防各种神经疾病或骨骼/关节疾病。