公开(公告)号：US10822307B2

公开(公告)日：2020-11-03

申请号：US16559293

申请日：2019-09-03

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48 ,  A61P35/00 ,  A61K31/47

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US10407393B2

公开(公告)日：2019-09-10

申请号：US16229805

申请日：2018-12-21

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48 ,  A61K31/47

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US20190185432A1

公开(公告)日：2019-06-20

申请号：US16229805

申请日：2018-12-21

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48

CPC classification number: C07D215/48 ,  A61K31/47 ,  A61P35/00

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US10259791B2

公开(公告)日：2019-04-16

申请号：US15503108

申请日：2015-08-26

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48 ,  A61K31/47

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US20170233344A1

公开(公告)日：2017-08-17

申请号：US15503108

申请日：2015-08-26

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48

CPC classification number: C07D215/48 ,  A61K31/47

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US11186547B2

公开(公告)日：2021-11-30

申请号：US17022675

申请日：2020-09-16

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48 ,  A61P35/00 ,  A61K31/47

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.

公开(公告)号：US20190389804A1

公开(公告)日：2019-12-26

申请号：US16559293

申请日：2019-09-03

Applicant: Eisai R&D Management Co., Ltd.

Inventor： Taiju Nakamura ,  Taichi Abe ,  Yusuke Miyashita ,  Hirofumi Kuroda ,  Yusuke Ayata ,  Atsushi Akao

IPC: C07D215/48

Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.