Methods for onapristone synthesis dehydration and deprotection

Invention Grant

US11613555B2 Methods for onapristone synthesis dehydration and deprotection 有权

Patent Title: Methods for onapristone synthesis dehydration and deprotection
Application No.: US17034598

Application Date: 2020-09-28
Publication No.: US11613555B2

Publication Date: 2023-03-28
Inventor: Ulf Tilstam , Stefan Proniuk , Ferry Brands
Applicant: Context Biopharma Inc.
Applicant Address: US PA Philadelphia
Assignee: Context Biopharma Inc.
Current Assignee: Context Biopharma Inc.
Current Assignee Address: US PA Philadelphia
Main IPC: C07J41/00
IPC: C07J41/00 ; C07J21/00

Abstract:

Methods and systems for making onapristone (ONA) using acidic hydrolysis and dehydration with sulfuric acid in an alcoholic solution are provided.

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