IP Library Granted Patent US 10,544,114
Granted Patent B2
US 10,544,114 · App. 16/091,596 · Granted Jan 28, 2020

Process for preparing oxathiazin-like compounds

Inventor: Rolf W. Pfirrmann (Weggis, CH)
Assignee: GEISTLICH PHARMA AG
C07D291/06C07C303/22C07C303/32
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Quick Facts
Patent No.
US 10,544,114
App. No.
16/091,596
Granted
Jan 28, 2020
Kind
B2
Abstract

Oxathiazin-like compounds, processes for making new oxathiazin-like compounds, compounds useful for making oxathiazin-like compounds, and their uses are disclosed. Processes for efficient and safe manufacture of compounds useful for making oxathiazin-like compounds useful for treating patients suffering from cancers, bacterial infections, fungal infections and/or viral infections by administering oxathiazin-like compounds are also disclosed.

Claims (11)

1. A process comprising reacting isethionic acid or a salt thereof with benzyl alcohol to produce a compound having structure

or a salt thereof.

2. The process of claim 1 , comprising using sodium hydroxide as a catalyst.

3. The process of claim 1 , wherein the salt of isethionic acid is isethionic acid sodium salt.

4. The process of claim 1 , wherein

is produced.

5. A process for preparing compound 2250 comprising the following reaction steps:

6. A process for preparing compound 2250 comprising the following reaction steps:

7. The process of claim 1 , wherein said reaction is performed at a temperature between 160° C. and 190° C.

8. The process of claim 1 , wherein said reaction is performed at a temperature between 170° C. and 180° C.

9. The process of claim 1 , wherein said reaction is performed at a temperature between 130° C. and 140° C. under vacuum.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 1, 2026
From: GEISTLICH PHARMA AG
To: PERSEVERE THERAPEUTICS INC.
Reel/Frame 075325/0017 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 8, 2019
From: PFIRRMANN, ROLF W.
To: GEISTLICH PHARMA AG
Reel/Frame 047927/0435 →
Continuity (2)
Provisional Application 62319675 · Apr 7, 2016
Related Publication 20190084950A1 · Mar 21, 2019