Patent · US Active

Process for purification of carfilzomib intermediate

US11078231B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

Fresenius Kabi Oncology Ltd. · IN

Inventors

Walter Cabri · Sant Celoni, ES
Saswata Lahiri · Sindhar, IN
Govind Singh · Ghaziabad, IN
Sarbjot Singh Sokhi · Amritsar, IN
Maneesh Kumar Pandey · Barwala, IN
Raj Tiwari · Manesar, IN
Sonu Prasad SHUKLA · Sindhar, IN

Key dates

Filing date	Sep 13, 2017
Grant date	Aug 3, 2021
Priority date	—
Expiry date	Sep 13, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07B2200/13
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a process for the purification of compound of formula II, wherein X may be independently selected from trifluoroacetic acid, hydrochloric acid, hydrobromic acid, p-toluene sulfonic acid and phosphoric acid; its isolation as solid and use for the preparation of carfilzomib.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.