Naphthyridine derivatives as alpha V beta 6 integrin antagonists for the treatment of E.G. fibrotic diseases
申请人:GlaxoSmithKline Intellectual Property Development Limited
公开号:US10513517B2
公开(公告)日:2019-12-24
A compound of formula (I) or a salt thereof:
wherein R1 represents a five-membered aromatic heterocycle selected from a N- or a C-linked mono- or di-substituted pyrazole, an N- or a C-linked optionally mono- or di-substituted triazole or an N- or a C-linked optionally mono- or di-substituted imidazole, which five-membered aromatic heterocycle may be substituted by one or two of the groups selected from a hydrogen atom, a methyl group, an ethyl group, a fluorine atom, a hydroxymethyl group, a 2-hydroxypropan-2-yl group, a trifluoromethyl group, a difluoromethyl group or a fluoromethyl group, except that when R1 represents an N-linked mono- or di-substituted pyrazole, R1 does not represent 3,5-Dimethyl-1H-pyrazol-1-yl, 5-Methyl-1H-pyrazol-1-yl, 5-Ethyl-3-methyl-1H-pyrazol-1-yl, 3,5-Diethyl-1H-pyrazol-1-yl, 4-Fluoro-3,5-dimethyl-1H-pyrazol-1-yl, 3-Methyl-1H-pyrazol-1-yl or 1H-pyrazol-1-yl.
式 (I) 的化合物或其盐:
其中 R1 代表五元芳香杂环,选自 N-或 C-连接的单取代或二取代吡唑、N-或 C-连接的任选单取代或二取代三唑或 N-或 C-连接的任选单取代或二取代咪唑,该五元芳香杂环可被一个或两个基团取代,这些基团选自氢原子、甲基、乙基、氟原子、羟甲基、2-羟基丙-2-基、三氟甲基、二氟甲基或羟甲基、羟甲基、2-羟基丙-2-基、三氟甲基、二氟甲基或氟甲基,但当 R1 代表 N-连接的单取代或二取代吡唑时除外、R1不代表3,5-二甲基-1H-吡唑-1-基、5-甲基-1H-吡唑-1-基、5-乙基-3-甲基-1H-吡唑-1-基、3,5-二乙基-1H-吡唑-1-基、4-氟-3,5-二甲基-1H-吡唑-1-基、3-甲基-1H-吡唑-1-基或1H-吡唑-1-基。