Patents by Inventor Navin Kumar Reddy KESHAVAREDDY

Navin Kumar Reddy KESHAVAREDDY has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

IMPROVED PROCESS FOR THE PREPARATON OF PURE (1'R,6R,6aR,7R,13S,14S,16R)-5-(ACETYLOXY)-3',4',6,6a,7,13,14,16-OCTAHYDRO-6',8,14-TRIHYDROXY-7',9-DIMETHOXY-4,10,23-TRIMETHYLSPIRO[6,16-(EPITHIOPROPANOXYMETH ANO)-7,13-IMINO-12H-1,3-DIOXOLO[7,8]ISOQUINO[3,2-b][3]BENZAZOCINE-20,1'(2'H)-ISOQUINOLIN]-19-ONE POLYMORPH THERE OF

Publication number: 20220315605

Abstract: The present invention provides pure (1?R,6R,6aR,7R,13S,14S,16R)-5-(acetyloxy)-3?,4?,6,6a,7,13,14,16-octahydro-6?,8,14-trihydroxy-7?,9-dimethoxy-4,10,23-trimethyl spiro[6,16-(epithiopropanoxymethano)-7,13-imino-12H-1,3-dioxolo[7, 8]isoquino[3,2-b][3] benzazocine-20,1?(211)-isoquinolin]-19-one of formula (1) substantially free from one or more impurities selected from intermediate compound of formula (50), cyclic impurity of formula (A), deshydroxy impurity of formula (B) and hydroxy impurity of formula (C).

Type: Application

Filed: June 29, 2020

Publication date: October 6, 2022

Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER

Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Rajeshwar Reddy SAGYAM, Navin Kumar Reddy KESHAVAREDDY