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:
May. 18, 2021
Filed:
Nov. 20, 2018
Applicant:
Natco Pharma Limited, Hyderabad, IN;
Inventors:
Bulli Babi Vipparla, Hyderabad, IN;
Sreenivas Nagapuri, Hyderabad, IN;
Sathaiah Kandula, Hyderabad, IN;
Janaki Rama Rao Ravi, Hyderabad, IN;
Durga Prasad Konakanchi, Hyderabad, IN;
Pulla Reddy Muddasani, Hyderabad, IN;
Venkaiah Chowdary Nannapaneni, Hyderabad, IN;
Assignee:
Natco Pharma Limited, Hyderabad, IN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/20 (2006.01);
U.S. Cl.
CPC ...
C07D 307/20 (2013.01);
Abstract
The present invention relates to novel intermediates of Eribulin and process for the preparation of the same. The process of the present invention is commercially viable and can be easily adopted for plant scale operations. The present invention relates to tetrahydrofuran compounds of formula I, X, XI, D and B.