The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2022
Filed:
Mar. 23, 2018
Wakunaga Pharmaceutical Co., Ltd., Osaka, JP;
Tomonori Yamaguchi, Akitakata, JP;
Kenji Itoh, Akitakata, JP;
Tatsuya Hirano, Akitakata, JP;
Rumiko Shimabara, Akitakata, JP;
Yohei Kawakubo, Akitakata, JP;
Masayuki Sato, Akitakata, JP;
Junpei Yamashita, Akitakata, JP;
Akira Yazaki, Akitakata, JP;
Taichi Ueshima, Akitakata, JP;
WAKUNAGA PHARMACEUTICAL CO., LTD., Osaka, JP;
Abstract
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 Rrepresents a hydrogen atom, a halogen atom or the like; Rrepresents a hydrogen atom, a halogen atom or the like; Rto Reach represent a hydrogen atom or the like; Rrepresents a hydrogen atom or the like; Rrepresents a hydrogen atom, a halogen atom, the following formula (a) (wherein Rand Reach represent a hydrogen atom, a hydroxy group, an optionally substituted lower alkyl group or the like) or the like, or Rand Rtogether represent ═N—OR(wherein Rrepresents a hydrogen atom, an optionally substituted lower alkyl group, or an aralkyl group), or Rand Rform an optionally substituted 4- to 6-membered saturated hetero ring together with the adjacent carbon atom, or the like; Rrepresents a hydrogen atom or the like; X represents a nitrogen atom or the like; and Y represents a nitrogen atom or the like.