IP Library Granted Patent US 8,476,263
Granted Patent B2
US 8,476,263 · App. 13/475,037 · Granted Jul 2, 2013

Prodrugs of 2,4-pyrimidinediamine compounds and their uses

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Quick Facts
Patent No.
US 8,476,263
App. No.
13/475,037
Granted
Jul 2, 2013
Kind
B2
Abstract

The present disclosure provides prodrugs of biologically active 2,4-pyrimidinediamine compounds, compositions comprising the prodrugs, intermediates and methods for synthesizing the prodrugs and methods of using the prodrugs in a variety of applications.

Claims (11)

1. A method for treating rheumatoid arthritis in a subject, comprising administering to the subject an effective amount of a compound according to the formula

in the form of a pharmaceutically acceptable organic base salt.

2. The method of claim 1 , wherein the compound or the pharmaceutically acceptable salt thereof is in the form of a hydrate.

3. The method of claim 1 wherein the base salt is ethanolamine.

4. The method of claim 1 wherein the base salt is diethanolamine.

5. The method of claim 1 wherein the base salt is triethanolamine.

6. The method of claim 1 wherein the base salt is N-methylglucamine.

7. The method of claim 1 wherein the base salt is morpholine.

8. The method of claim 1 wherein the base salt is piperidine.

9. The method of claim 1 wherein the base salt is dimethylamine.

10. The method of claim 1 wherein the base salt is diethylamine.

Assignments (3)
SECURITY INTEREST Recorded May 8, 2026
From: RIGEL PHARMACEUTICALS, INC.
To: MIDCAP FUNDING IV TRUST
Reel/Frame 075576/0880 →
SECURITY INTEREST Recorded Aug 25, 2022
From: RIGEL PHARMACEUTICALS, INC.
To: MIDCAP FINANCIAL TRUST
Reel/Frame 061327/0712 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 6, 2012
From: SINGH, RAJINDER; BHAMIDIPATI, SOMASEKHAR; MASUDA, ESTEBAN; SUN, THOMAS; STELLA, VALENTINO J.
To: RIGEL PHARMACEUTICALS, INC.
Reel/Frame 028330/0835 →