专利检索 ap:("Lee Pharma Limited") AND inv:"Venkat Reddy Alla" 第 1 页

1.

发明授权
Process for the preparation of dipeptidyl peptidase-4 (DPP-4) enzyme inhibitor 有权

公开(公告)号：US10450315B2

公开(公告)日：2019-10-22

申请号：US15542093

申请日：2015-02-20

申请人： Lee Pharma Limited , Venkat Reddy Alla , Raghumitra Alla , Srinivas Reddy Mallepalli , Suresh Babu Nandam , Madhukar Reddy Guda , Raja Reddy Alluri

发明人： Venkat Reddy Alla , Raghumitra Alla , Srinivas Reddy Mallepalli , Suresh Babu Nandam , Madhukar Reddy Guda , Raja Reddy Alluri

IPC分类号： C07D487/04 , C07C233/05

摘要： The present invention relates to a novel and improved process for the preparation of Sitagliptin of Formula (I) and its pharmaceutically acceptable salts. The present invention also relates to novel intermediates and process for the preparation of intermediates used in the preparation of Sitagliptin.

2.

发明申请
NOVEL PROCESS FOR THE PREPARATION OF DIPEPTIDYL PEPTIDASE-4 (DPP-4) ENZYME INHIBITOR 审中-公开

公开(公告)号：US20180265513A1

公开(公告)日：2018-09-20

申请号：US15542093

申请日：2015-02-20

申请人： Lee Pharma Limited

发明人： Venkat Reddy Alla , Raghumitra Alla , Srinivas Reddy Mallepalli , Suresh Babu Nandam , Madhukar Reddy Guda , Raja Reddy Alluri

IPC分类号： C07D487/04 , C07C233/05

CPC分类号： C07D487/04 , C07B2200/07 , C07B2200/13 , C07C233/05

摘要： The present invention relates to a novel and improved process for the preparation of Sitagliptin of Formula (I) and its pharmaceutically acceptable salts. The present invention also relates to novel intermediates and process for the preparation of intermediates used in the preparation of Sitagliptin.