申请人:WAKUNAGA PHARMACEUTICAL CO., LTD.
公开号:US20200062752A1
公开(公告)日:2020-02-27
It is intended to provide a novel compound having high antitumor activity and low toxicity to normal cells. The present invention provides a pyridone carboxylic acid derivative represented by the following formula (1) or a salt thereof wherein R
1
represents a hydrogen atom, a halogen atom or the like; R
2
represents a hydrogen atom, a halogen atom or the like; R
3
to R
6
each represent a hydrogen atom or the like; R
7
represents a hydrogen atom or the like; R
8
represents a hydrogen atom, a halogen atom, the following formula (a) (wherein R
a1
and R
a2
each represent a hydrogen atom, a hydroxy group, an optionally substituted lower alkyl group or the like) or the like, or R
7
and R
8
together represent —N—OR
10
(wherein R
10
represents a hydrogen atom, an optionally substituted lower alkyl group, or an aralkyl group), or R
7
and R
8
form an optionally substituted 4- to 6-membered saturated hetero ring together with the adjacent carbon atom, or the like; R
9
represents a hydrogen atom or the like; X represents a nitrogen atom or the like; and Y represents a nitrogen atom or the like.
本发明旨在提供一种具有高抗肿瘤活性和低毒性对正常细胞的新型化合物。本发明提供一种由以下式(1)表示的吡啶酮羧酸衍生物或其盐,其中R1代表氢原子、卤素原子或类似物;R2代表氢原子、卤素原子或类似物;R3至R6各自代表氢原子或类似物;R7代表氢原子或类似物;R8代表氢原子、卤素原子、以下式(a)(其中Ra1和Ra2各自代表氢原子、羟基、可选择取代的低烷基基团或类似物)或类似物,或者R7和R8一起代表—N—OR10(其中R10代表氢原子、可选择取代的低烷基基团或芳基烷基基团),或者R7和R8与相邻碳原子一起形成可选择取代的4-至6元饱和杂环,或类似物;R9代表氢原子或类似物;X代表氮原子或类似物;Y代表氮原子或类似物。