IP Library Granted Patent US 9,737,554
Granted Patent B2
US 9,737,554 · App. 15/005,771 · Granted Aug 22, 2017

Prodrugs of 2,4-pyrimidinediamine compounds and their uses

Inventors: Somasekhar Bhamidipati (Foster City, CA); Rajinder Singh (Belmont, CA); Thomas Sun (Palo Alto, CA); Esteban Masuda (Menlo Park, CA)
Assignee: Rigel Pharmaceuticals, Inc.
A61K31/675A61K9/0053C07D498/04C07F9/6561
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Quick Facts
Patent No.
US 9,737,554
App. No.
15/005,771
Granted
Aug 22, 2017
Kind
B2
Abstract

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

Claims (16)

1. An oral dosage formulation comprising a hydrate of the prodrug salt:

or a pharmaceutically-acceptable carrier, excipient, and/or diluent; wherein:

M is Na;

the prodrug salt hydrate present in the oral dosage formulation is substantially crystalline prodrug salt hydrate; and

the powder X-ray diffraction data of the crystalline prodrug salt hydrate comprises a characteristic peak at a two theta value of 9.9±0.1° in response to radiation of wavelength 1.54059 Å.

2. The oral dosage formulation of claim 1 , the formulation comprising from about 50 mg to about 400 mg of the crystalline prodrug salt hydrate.

3. The oral dosage formulation of claim 1 , wherein the powder X-ray diffraction data of the crystalline prodrug salt hydrate comprises a characteristic peak at a two theta value of 11.8±0.1°.

4. The oral dosage formulation of claim 1 , wherein the powder X-ray diffraction data of the crystalline prodrug salt hydrate comprises a characteristic peak at a two theta value of 21.8±0.1°.

5. The oral dosage formulation of claim 1 , wherein the powder X-ray diffraction data of the crystalline prodrug salt hydrate comprises a characteristic peak at a two theta value of 13.2°±0.1°.

6. The oral dosage formulation of claim 1 , wherein the hydrate of the prodrug salt has the formula:

wherein x is from about 1 to about 15.

7. The oral dosage formulation of claim 6 , wherein x is from about 5 to about 10.

8. The oral dosage formulation of claim 6 , wherein x is from about 5 to about 8.

9. The oral dosage formulation of claim 6 , wherein x is 6.

10. The oral dosage formulation of claim 8 , wherein the powder X-ray diffraction data of the crystalline prodrug salt hydrate comprises a characteristic peak at a two theta value of 3.4°±0.1°.

11. The oral dosage formulation of claim 1 , wherein the hydrate is:

Assignments (2)
SECURITY INTEREST Recorded May 8, 2026
From: RIGEL PHARMACEUTICALS, INC.
To: MIDCAP FUNDING IV TRUST
Reel/Frame 075576/0880 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 27, 2016
From: BHAMIDIPATI, SOMASEKHAR; SINGH, RAJINDER; SUN, THOMAS; MASUDA, ESTEBAN
To: RIGEL PHARMACEUTICALS, INC.
Reel/Frame 037595/0100 →
Continuity (6)
Continuation 14534784 · Nov 6, 2014
Continuation 13861650 · Apr 12, 2013
Continuation 13418306 · Mar 12, 2012
Continuation 11943506 · Nov 20, 2007
Provisional Application 60866722 · Nov 21, 2006
Related Publication 20160367575A1 · Dec 22, 2016