公开(公告)号：US20240262809A1

公开(公告)日：2024-08-08

申请号：US18557775

申请日：2022-04-26

Applicant: LG CHEM, LTD.

Inventor： In Ae RYU ,  Ju Young LEE ,  Joo Yong YOON ,  Seok Ju LEE ,  Ah Byeol PARK ,  Ki Dae KIM ,  Hui Rak JEONG

IPC: C07D403/10

CPC classification number: C07D403/10

Abstract: The present invention relates to a novel method for preparing an intermediate of Chemical Formula 2, wherein the intermediate can be effectively used in the synthesis of a xanthine oxidase inhibitor.

公开(公告)号：US20240352001A1

公开(公告)日：2024-10-24

申请号：US18557786

申请日：2022-04-26

Applicant: LG CHEM, LTD.

Inventor： In Ae RYU ,  Ju Young LEE ,  Joo Yong YOON ,  Seok Ju LEE ,  Ah Byeol PARK ,  Ki Dae KIM ,  Hui Rak JEONG

IPC: C07D403/04

CPC classification number: C07D403/04

Abstract: The present invention relates to a novel method for preparing an intermediate of Chemical Formula 3, wherein the intermediate can be effectively used in the synthesis of a xanthine oxidase inhibitor.

公开(公告)号：US20240239768A1

公开(公告)日：2024-07-18

申请号：US18557276

申请日：2022-04-26

Applicant: LG CHEM, LTD.

Inventor： In Ae RYU ,  Ju Young LEE ,  Joo Yong YOON ,  Seok Ju LEE ,  Ah Byeol PARK ,  Ki Dae KIM ,  Hui Rak JEONG

IPC: C07D403/04

CPC classification number: C07D403/04

Abstract: The present invention relates to a novel preparation method that can be advantageously utilized for the synthesis of a xanthine oxidase inhibitor of Chemical Formula 1.